Radio Hill Gazette

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Midwest (East-North) Ground-System Performance

Maidenhead EN Ham Radio Performance

Executive summary

We define “EN” as the eastern-northern portion of the Midwest, this report treats it as an operationally defined Great Lakes / eastern-northern Midwest subregion.
For early June 2026, the official space-weather picture is usable but variable rather than quiet-stable. NOAA SWPC’s June 4 forecast expected low-to-moderate solar activity, with chances for R1–R2 radio blackouts from active regions, and active to G1 geomagnetic conditions with a minor chance of stronger disturbance. SWPC defines R1 as weak/minor HF degradation on the sunlit side. The smoothed June 2026 solar-cycle forecast also remained elevated, with a predicted sunspot number near 101.3 and F10.7 near 126.3, which is still favorable for daytime F-region support on 20–10 meters compared with solar-minimum years.

For the Midwest EN region, that translates into a practical HF pattern of stronger daytime potential on 20/17/15 meters, intermittent but still meaningful opportunities on 12/10 meters, and less stable 40/80-meter daytime performance whenever D-layer absorption is elevated. After sunset, the D layer weakens, so 40 and 80 meters typically become the more reliable regional/interregional bands, while 20 meters often stays usable later into the evening in summer. This seasonal/diurnal pattern is an inference from NOAA’s D-region absorption product, ionospheric reflection physics, and current Cycle 25 flux levels.

On 2 m / 70 cm / 23 cm, ordinary range remains mostly line-of-sight plus scatter, but the Great Lakes and adjacent flat terrain can produce useful tropospheric enhancement when high pressure, subsidence inversions, nocturnal cooling, and lake/land temperature contrasts align. A long-running engineering summary of William Hepburn’s tropo maps notes that ducting is more common in the Midwest, Great Lakes, and Northeast in fall, though early-summer overnight lake-path enhancements still occur under stable air. NOAA and NWS sources also show why: the Great Lakes cool nearby summer air, generate lake-breeze circulations, and help support shallow stable layers along lake paths.

The soil side of the problem is at least as important as the sky side for verticals and ground-mounted antennas. USDA/NASS data for the week ending May 31, 2026 showed that parts of the eastern-northern Midwest were drying quickly even without widespread formal drought: Illinois topsoil in the “very short + short” categories was 33%, Michigan 28%, Minnesota 35%, and Wisconsin 34%, while Ohio was still only 1% and Indiana 15%. CPC’s June outlook simultaneously favored subnormal precipitation across the Great Lakes and adjacent areas, and CPC’s hazards outlook flagged rapid-onset drought possible for parts of the Upper/Middle Mississippi Valley, Ohio Valley, and Great Lakes region.

That matters because soil moisture is a major control on ground conductivity and permittivity. ITU-R states that moisture content is the major factor in ground electrical properties, and gives a striking order-of-magnitude example: loam that is normally around 10⁻² S/m can dry to about 10⁻⁴ S/m, roughly the conductivity of granite. USDA/NRCS similarly notes that wetter soils conduct better, and soil-science literature models bulk soil conductivity as a function of both volumetric water content and the conductivity of the soil solution. In other words, seasonal drying can create a several-fold to ~100× conductivity penalty depending on texture, salts, and moisture history.

For operators, the most actionable finding is this: do not expect a ground rod to replace radials. ARRL explicitly states that a ground rod is useful for safety/lightning functions, but its RF resistance is high; a quarter-wave vertical needs a low-RF-resistance return path, which is what radial wires supply. In N6LF’s classic QEX measurements, 64 radials on the ground improved signal by about +5.8 dB relative to a sparse 4-radial baseline, while 4 elevated radials at about 48 inches produced about +5.9 dB, essentially matching the 64-radial on-ground case on 40 meters. Conversely, he described a 4-radial on-ground system as an emergency measure.

The practical implication for the Midwest EN region during dry spells is straightforward: if your vertical suddenly “still tunes, but gets out worse,” suspect ground loss before blaming the rig. The most effective mitigations are to add radials, especially in the first fraction of a wavelength from the base; consider resonant elevated radials if you cannot lay many ground radials; use an antenna analyzer to track the feedpoint resistance/reactance shift rather than relying only on shack SWR; and, for safety/lightning, test the grounding electrode separately with a ground-resistance tester using methods aligned with IEEE 81, recognizing that this does not measure RF radial performance.

Scope and assumptions

For this report, “Midwest EN” is treated as the eastern-northern Midwest / Great Lakes arc, with emphasis on Wisconsin, Michigan, Illinois, Indiana, Ohio, and adjacent upper-Midwest contexts such as Minnesota when regional soil-moisture or propagation patterns matter. That is a practical definition, not a formal one. The overlap with the Maidenhead EN field is worth noting because PSKReporter and VHF/UHF operators often think in grid fields, but I have not assumed your “EN” means only the grid field.

A second assumption is methodological: for “current” propagation, I prioritize official SWPC/CPC/USDA products and current measurement networks over anecdotal on-air reports. PSKReporter and WSPRnet are therefore treated as observational networks, not as deterministic forecasts; NOAA SWPC and CPC products are treated as the official baseline for space weather and drought/soil-moisture outlooks.

Propagation across the Midwest EN region

HF behavior

Cross-section diagram of the ionosphere over the Midwest showing F-region ionization supporting 20–10 m bands, thick D-layer absorption affecting lower HF, and the sunset transition where 40/80 m signals recover. Labels include solar EUV, R1–R2 blackouts, and geomagnetic Kp.
The official June 4 SWPC forecast called for low-to-moderate solar activity, with chances for M-class flares and R1–R2 radio blackouts, while geomagnetic conditions were expected to be elevated to G1 with a minor chance of stronger disturbance. SWPC’s definitions matter here: R1 already implies weak/minor HF degradation on the sunlit side, and Kp-driven geomagnetic disturbance affects users of radio signals reflected by or passing through the ionosphere.

For Midwest EN operators, the practical pattern is therefore a two-track HF day. On the one hand, the still-elevated Cycle 25 background supports daytime 20/17/15 m very well and keeps 12/10 m genuinely worth checking, especially around local late morning through mid-afternoon. On the other hand, any R1–R2 intervals and elevated D-region absorption will most obviously punish 40/30/20 m sunlit paths at the lower end of HF, with the strongest daytime degradation usually on the lower HF bands. This is an inference from SWPC’s D-RAP absorption model and ionosonde reflection physics combined with the current smoothed sunspot/F10.7 forecast.

The seasonal pattern in early summer is classic midlatitude behavior. Longer daylight and stronger solar illumination raise daytime ionization, which helps the upper HF bands, but they also raise D-layer absorption, which is why 40 and 80 meters can feel “dead” by day and then recover sharply after sunset. In winter, the balance shifts: daytime absorption is lower, so 80 and even 160 meters improve materially, while summer still favors the upper bands more often. The spring and fall transition seasons often bring the best all-around balance between low daytime absorption and still-healthy F-region support. The seasonal summary here is a first-principles inference from the official D-layer and ionospheric references rather than a single Midwest-specific climatology product.

A useful mental model for the region is:

HF propagation drivers in the Midwest EN region (early June 2026)

Solar flux & EUV
→ F-region ionization
Flares & proton events
→ R1–R2 blackouts
D-region absorption
→ 40/30/20 m daytime fading
Geomagnetic disturbance
→ Erratic path quality
Sunset + overnight cooling
→ D-layer decay → 40/80 m recovery
Result
Strong 20–10 m daytime openings
Variable lower-HF sunlit paths

This diagram summarizes SWPC’s official HF-degradation and ionospheric mechanisms and the diurnal transition most relevant to Midwest operators.

VHF and UHF behavior

Tropospheric Ducting over the Great Lakes – VHF/UHF Enhancement Mechanism
For 2 m, 70 cm, and 23 cm, most ordinary Midwest EN operating remains local or regional LOS/scatter, but VHF/UHF enhancement becomes dramatically better when the lower troposphere forms refractive ducts or strong super-refraction layers. NTIA’s classic ducting review explains that atmospheric stratification can strongly alter service and interference fields, while the NAB summary of Hepburn’s maps explains the practical recipe: warm, dry air overriding cooler, moister air produces the vertical refractive gradients that favor VHF/UHF bending and ducting.

For the Great Lakes slice of the Midwest EN region, lake physics help. NOAA-reviewed Great Lakes climatology notes that the lakes moderate temperatures, cool nearby summers, and warm nearby winters, and NWS defines the lake breeze as a thermally produced circulation from the lake toward shore caused by differential heating. Alongshore and cross-lake paths therefore get exactly the kind of shallow stable layers and inversion boundaries that can support overnight or morning tropo enhancement, especially when a synoptic high settles in and winds stay light.

The important seasonal nuance is that the Midwest/Great Lakes are not at peak tropo season in early June. The Hepburn/NAB climatological note says the fall is more favorable for the Midwest, Great Lakes, and Northeast. So the rigorous way to say it is: local VHF/UHF ducting risk is present in early summer but not climatologically maximal; expect the best odds on overnight to early-morning lake paths and during stable high-pressure episodes, with a stronger regional tendency later in summer into fall.

Observation sources and recent maps

The most useful official HF nowcasting product is NOAA SWPC’s D-Region Absorption Predictions, which SWPC explicitly describes as guidance for understanding HF radio degradation and blackouts. SWPC’s broader product suite also includes Planetary K-index, GloTEC, and WAM-IPE links, which are the right official context layers when you want to decide whether a bad day is caused mainly by absorption, geomagnetic disturbance, or background electron-content structure.

For actual on-air observation, PSKReporter is the fastest practical lens into what the bands are really doing. PSKReporter says its purpose is to automatically gather digimode reception records and make them available in near real time. Its public MQTT mirror also makes clear that spots can be filtered by band, mode, callsign, grid square, or field, which is why it is especially useful for a Midwest EN operator trying to separate “the band is shut” from “my station is underperforming.”

WSPRnet fills a slightly different niche. Its own site presents a Map, Activity, and Database, and publishes frequency coverage from LF through microwave, including 144 MHz, 432 MHz, and 1296 MHz. Because WSPR transmissions are structured for weak-signal propagation reporting, WSPRnet is excellent for night-to-night A/B comparisons of antenna changes, radial additions, drying-soil effects, and sunset/sunrise behavior, especially if you hold power, band, and schedule constant.

For planned-path work rather than nowcasting, VOACAP Online remains a standard planning tool, while real-time ionosonde-based tools such as KC2G’s MUF map are useful secondary references. These are not substitutes for local observation, but they are good for answering, “Should 15 m exist at all right now?” before you diagnose your station.

For VHF/UHF, the two practical maps are different in purpose. Hepburn’s tropo forecast is a forecast of refractive potential; VHF DX View is a real-time observation layer based on APRS-IS paths and highlights unusually long 144 MHz behaviors. Used together, they let you distinguish “forecast improvement” from actual enhancement already in progress.

Soil moisture, drought, and what that means for conductivity

Rapid Surface Drying in the Eastern-Northern Midwest – May 31, 2026 USDA/NASS Topsoil Moisture
The current broad drought picture is mixed, not uniformly severe. The U.S. Drought Monitor notes that drought categories run from D0 through D4, while CPC’s June 2026 Midwest discussion said that, outside Kentucky and adjacent southeastern Missouri, there was very little drought elsewhere in the Midwest, limited mainly to north-central Minnesota and some western fringes. At the same time, CPC’s June outlook favored subnormal precipitation across the Great Lakes and adjacent areas, and the weekly hazards outlook flagged rapid-onset drought possible for parts of the Upper/Middle Mississippi Valley, Ohio Valley, and Great Lakes region.

That broad-scale picture can hide rapid surface drying, which is what RF ground systems care about first. USDA/NASS weekly topsoil data for the week ending May 31, 2026 showed that some eastern-northern Midwest states had already dried markedly at the surface despite not being in major regional drought.

State May 17 very short + short May 24 very short + short May 31 very short + short Practical read
Illinois 17% 16% 33% Clear late-May drying
Indiana 16% 11% 15% Near-steady to slightly dry
Michigan 16% 14% 28% Noticeable drying
Minnesota 39% 32% 35% Persistently drier than neighbors
Ohio 12% 1% 1% Surface stayed moist
Wisconsin 14% 17% 34% Clear late-May drying

*Derived from USDA/NASS “Topsoil Moisture Condition – Selected States” for the weeks ending May 17, May 24, and May 31, 2026. The table uses “very short + short” as a practical dryness indicator for RF-ground behavior.

The reason this matters electrically is direct and large. FCC’s ground-wave references say U.S. ground conductivities typically span roughly 0.1 to 30 mS/m. ITU-R P.527/P.527-5 says moisture is the major factor controlling soil permittivity and conductivity and gives a useful order-of-magnitude example: loam may normally be around 10⁻² S/m, but when dried can fall to about 10⁻⁴ S/m. USDA/NRCS says the same thing in plainer language: wetter soil conducts better.

An illustrative engineering view looks like this:

Illustrative soil conductivity vs. relative wetness

Very dry Dry Moderate Moist Wet

10 9 8 7 6 5 4 3 2 1 0

Bulk conductivity, mS/m

(Order-of-magnitude synthesis from ITU, FCC, USDA/NRCS, and soil-EC literature)

This is not a site calibration; it is an order-of-magnitude synthesis from ITU, FCC, USDA/NRCS, and soil-EC literature showing the direction and approximate scale of change that can occur as moisture rises. Texture, salts, organic matter, and compaction can move a real site far above or below these points.

Grounding, radials, and the physics behind performance changes

Ground-Loss Comparison: 4 Radials vs. Dense Radial System – Impact on Antenna Performance
ARRL’s grounding guidance is unusually clear on the central distinction: safety ground, lightning ground, and RF ground are not the same thing. A quarter-wave vertical needs an RF return path with low RF resistance; a ground rod helps only a little at RF and remains a high-RF-resistance connection compared with a proper radial system. ARRL’s verticals primer adds the other half of the picture: the vertical is effectively a dipole with half its structure “mirrored” in the counterpoise or ground system, and poor ground conductivity makes the classic joke true that a bad vertical “radiates equally poorly in all directions.”

In circuit terms, the important quantity is radiation efficiency:

η ≈ R_rad / (R_rad + R_loss)

ARRL’s modeling tutorial states this explicitly, and for short verticals the implication is severe: if the antenna’s radiation resistance is already low, then a few extra ohms of ground loss become a large fraction of the total input resistance. That is why short, loaded, or low-band verticals are much more sensitive to soil and radial quality than a better-behaved half-wave structure.

The near field around the base is where the damage happens. N6LF notes that most ground loss is concentrated within about half a wavelength of the base of the vertical. That does not mean every radial must be half a wavelength long; it means the first portion of the return-current region is the most valuable place to reduce loss. It is also why adding more modest-length radials near the base is often more productive than trying to install just a few very long wires.

Drying soil affects both loss and tuning. ITU says moisture changes both conductivity and permittivity. In N6LF’s elevated-radial analysis, the radial length needed for resonance at 3.65 MHz changed with soil characteristics, and a low dipole at 8 ft could resonate anywhere from roughly 64.5 to 66.4 ft depending on soil. In his 2009 measurements, he also noted that small changes in the system could vary with soil moisture and that observed measurements were run after periods of rain and after later drainage/drying. So a drying site can do three things at once: raise ground loss, shift resonance, and change feed impedance.

The most useful experimental ham evidence in the source set comes from N6LF’s QEX work on 40 m. With 33-foot radials on the ground, going from 4 to 8 to 16 to 32 radials improved field strength by roughly +2.26 dB, +3.76 dB, and +4.16 dB relative to the 4-radial baseline; he explicitly described the 4-radial case as “really flaky” and suitable only as an emergency measure. Separately, his Part 3 measurements found 64 radials on the ground at about +5.8 dB over the 4-radial ground baseline, while 4 elevated radials at 48 inches produced about +5.9 dB, which is effectively the same result for practical purposes.

That experimental result is the cleanest answer to the buried-vs-elevated question: many on-ground radials work, and a small number of properly resonant elevated radials can work just as well, especially where space is limited. But there is a catch. N6LF’s later elevated-radial analysis showed that with only a few radials, making them “too long” relative to the optimum can create a deep gain notch, even on the order of several dB, and can move the takeoff angle upward. In other words, sparse elevated radials must be treated as resonant antenna elements, not just “some wires that look about right.”

ARRL and secondary ARRL-hosted references in the source set also support several practical corollaries: surface or shallow-buried radials are preferred for ground-mounted verticals; poor soil requires more elevated-radial height for the same performance; and ground rods do not replace radials for RF return current.

Practical station guidance for Midwest EN operators

Practical Antenna Maintenance for Midwest EN Operators During Dry ConditionsPractical Antenna Maintenance for Midwest EN Operators During Dry Conditions

Radial and counterpoise choices

If you have room for a real ground system, the most robust HF choice in the Midwest EN region is still a ground-mounted vertical with many on-ground or shallow-buried radials. For 40–10 m, N6LF found that 32 radials of about 33 ft worked very well whether on the ground or elevated, which is a strong practical benchmark for multiband field and home installations. If you cannot lay that many wires, use 16–32 rather than stopping at 4–8 if at all possible.

If you cannot lay many ground radials, then do not half-commit to a poor earth return. Instead, switch strategies: use 4 resonant elevated radials at a genuine height above ground, or use a complete antenna structure such as a vertical dipole or other design that does not depend on earth-return RF current. ARRL explicitly notes that a “complete” antenna such as a dipole or ground plane does not require an RF ground in the same way, provided common-mode current is controlled with a choke.

Configuration Evidence-backed behavior When to use Main risk / caveat
4 on-ground radials Emergency-level baseline; N6LF called this “really flaky” Portable, temporary, proof-of-concept High ground loss; strong seasonal sensitivity
8 on-ground radials About +2.26 dB over 4-radial baseline on 40 m Entry-level improvement Still meaningfully lossy
16 on-ground radials About +3.76 dB over 4-radial baseline Good practical minimum for many sites Dry soil still hurts
32 on-ground radials About +4.16 dB over 4-radial baseline; worked very well 40–10 m in N6LF work Strong home or semi-permanent installation Labor and yard management
64 on-ground radials About +5.8 dB over 4-radial baseline High-performance installation More wire for diminishing returns
4 elevated resonant radials About +5.9 dB over 4-radial ground baseline, roughly matching 64 on-ground in N6LF’s 40 m test Small lots, roof/deck edges, constrained sites Must be resonant, symmetric, and properly elevated
Ground rod only Helps little at RF; ARRL says RF resistance remains high Safety/lightning system only Not a substitute for RF counterpoise

*Table values are synthesized from ARRL grounding guidance and N6LF’s QEX measurements.

What to expect as the soil dries

How Soil Moisture Dramatically Affects Ground Conductivity (Engineering Approximation)

Soil / moisture condition Representative conductivity band Likely antenna symptoms Best operator response
Wet to moist ~3 to 10+ mS/m Lowest ground loss; tuning close to spring baseline Record analyzer baseline; this is your reference state
Moderately dry ~1 to 3 mS/m Slight upward/downward resonance drift, more tuner work, weaker low-band reports Add radials near base, verify choke, compare WSPR/PSK reports to wet baseline
Dry ~0.3 to 1 mS/m Noticeable efficiency loss on 80/40 m verticals, feedpoint resistance/reactance shift, “it tunes but is deaf/weak” complaints Add 16–32 radials if possible, or convert to elevated resonant radials
Very dry / drought-stressed surface ~0.1 to 0.3 mS/m or worse Ground loss dominates short/loaded verticals; strongest seasonal performance drop Temporary irrigation near base if practical, aggressive radial upgrade, consider vertical dipole or complete counterpoise design

These conductivity bands are engineering approximations, not measured site values. They are based on the FCC/ITU/USDA ranges and on the fact that ITU’s loam example spans about 0.1 mS/m to 10 mS/m as soil dries or wets. The strongest practical impact will usually show first on low-band verticals and shorter loaded antennas because their loss budget is least forgiving.

Tuning and measurement

Use an antenna analyzer first and an SWR meter second. The analyzer tells you where resonance moved, whether feedpoint R and X changed, and whether the antenna became “easy to match but inefficient.” A shack SWR reading alone cannot tell you that; even ARRL licensing material reminds operators that a perfect 1:1 SWR does not guarantee an effective antenna.

For a rigorous Midwest EN seasonal workflow, build a wet-spring baseline and then compare it to late-summer dry-state measurements. Record at minimum: resonant frequency, (R), (X), SWR bandwidth, band/mode, transmit power, radial count, and soil condition. Then correlate those station measurements with PSKReporter or WSPRnet observations using the same band, power, mode, and time-of-day windows. A consistent drop in spots or in median path quality during dry periods, with the rig and schedule held constant, is strong circumstantial evidence that the ground system is the culprit.

If you want to test your safety/lightning grounding electrode, use a real ground-resistance tester rather than RF instruments. IEEE 81 is the governing measurement standard for ground resistance and potential gradients in earth. Clamp-on and fall-of-potential tools are the right electrical-domain instruments for this job. But be strict about the interpretation: that result tells you about the grounding electrode system, not the RF quality of your radial field. RF performance still has to be evaluated by feedpoint measurements and on-air field results.

Seasonal maintenance and dry-condition mitigation

For the EN Midwest climate, the highest-value maintenance is seasonal rather than one-time. After the wet spring, measure and log the antenna. Then repeat after prolonged dry periods, because that is when conductivity and permittivity shifts show up most strongly in real use. If the resonant point moves only a little but outgoing reports fall materially, the likely culprit is higher loss, not a catastrophic mismatch.

When dry conditions arrive, prioritize mitigation in this order:

  1. Add or densify radials, especially close to the base where most ground loss occurs.
  2. If space is limited, shift to properly resonant elevated radials instead of tolerating a sparse ground field.
  3. Verify that the feed line is not becoming part of the antenna by adding or improving a common-mode choke where appropriate.
  4. For temporary relief, wetting the soil near the base can help because soil conductivity rises with moisture and most loss is concentrated near the antenna base region.
  5. If the site is chronically poor, consider a complete counterpoise-based design such as a vertical dipole or other structure less dependent on earth conductivity.

Open questions and limitations

I did not establish a formal, authoritative geographic boundary for “Midwest EN,” because none of the reviewed official sources define one. I therefore used the user-specified interpretation and noted the alternate Maidenhead-grid meaning of “EN.”

I also did not quantify a separate, Midwest-specific 6-meter Sporadic-E climatology in this pass, because the strongest high-confidence recent sources I gathered were better on HF space weather, tropospheric VHF/UHF, and ground-system engineering than on real-time 6 m Es for this specific region. The VHF/UHF discussion above therefore emphasizes the tropospheric mechanisms that were well supported by the current source set.

Finally, the conductivity-versus-moisture plot and the recommended conductivity classes are engineering approximations, not a site survey. If you need a design-grade number for a specific property, the right next step is a local soil/ground-conductivity measurement or modeled estimate, plus a station-specific before/after validation with analyzer readings and on-air weak-signal reporting networks.

RHG Articles

HF Dipole Quick‑Check

Field Measurements & Troubleshooting Flow

This quick-reference guide helps troubleshoot HF dipoles using real-world measurements, feed-line comparisons, and a practical field workflow.

Shop‑Ready Measurement Examples (20m Half‑Wave Dipole)

Example

 Feedline Rig‑Side R (Ω) Rig‑Side X (Ω) Rig‑Side SWR Notes

A

Well
Tuned

 20–30 ft LMR‑400 ≈ 48–55 ≈ ±0–10 ≈ 1.05–1.30 Feedpoint ≈ 50 + j0 Ω
B
Lossier
Line		 30 ft RG‑8X Similar resonance Similar May appear “better” Expect 0.5–1.0 dB more loss vs LMR‑400. Lossy coax can hide true SWR.

Page Troubleshooting Flow

  • Calibrate analyzer using open / short / load.
  • Measure directly at the feedpoint first.
  • Record R, X, and SWR at the operating frequency.
  • Measure again at the rig with the installed feedline.
  • Clamp a current probe at the feedpoint and shack entry.
  • If common‑mode current is present, add a choke and re‑test.
  • Inspect connectors, weatherproofing, and strain relief.
  • Trim or length‑adjust elements to center resonance if needed.

HF Dipole Recommended Choke

Use a 9–12 turn FT‑240‑43 ferrite choke or equivalent at the feedpoint and/or shack entry to reduce common‑mode current on the coax shield.

Pass / Fail Thresholds

  • Feedpoint SWR > 2:1 → trim or length‑adjust the dipole elements.
  • Rig‑side SWR > 1.8:1 with low‑loss coax → verify feedpoint mismatch.
  • Clamp current > ~0.2 A RMS at shack entry → add or relocate choke(s).
  • Lossy coax can make SWR readings appear better than reality.
Target values near band center: R ≈ 50 Ω and X ≈ 0 Ω.

HF Dipole Field Tips

  • Document coax type and total feedline length.
  • Keep the feedpoint centered and mechanically balanced.
  • Weatherproof all outdoor connections.
  • Use low‑loss coax whenever possible for accurate readings.
  • Recheck measurements after each change.
SARC Repeater

Fusion on the SARC 70cm Repeater

SARC Repeater 70cm Dual Mode FM Analogue

Yaesu System Fusion with WiresX connectivity

A club-focused guide for Schaumburg Amateur Radio Club members who already know the analog side of the system but have not yet used the Yaesu System Fusion side of the club’s UHF machine. This version is written for practical first use on a Yaesu FT5D handheld and a Yaesu FTM-400 mobile.

Prepared for SARC members. Language: en-US. Date context: 2026-05-17/18. Scope: SARC repeater use, Fusion basics, first-time programming, operating differences from DMR and D-STAR, memory setup, etiquette, and troubleshooting.

Executive summary

The SARC UHF repeater is published on the current club repeater page as 442.275 MHz output with +5 MHz input, PL 114.8 Hz for analog operation, and a default WIRES-X room identified as IL-K9IIK-ROOM / #40294. SARC’s 2021 Fusion update also says the repeater automatically recognizes analog FM versus Yaesu System Fusion and switches accordingly, which is exactly the use case Yaesu describes for AMS, its automatic mixed-mode function (SARC repeater page; SARC “442.275 MHz UHF Repeater Update – Yaesu Fusion”; Yaesu System Fusion overview).

For most members, the easiest and least confusing approach is to save two memories on each radio: one forced to FM for analog nets and FM-only users, and one set to AMS/Auto for mixed-mode operation or first-time Fusion testing. If you specifically want a digital-only voice path, save a third copy as DN. On Fusion radios, you do not set a DMR color code, and you do not program D-STAR-style RPT / URCALL / DST values for ordinary repeater access. The settings that matter here are the repeater frequency, shift, analog tone when using FM, the radio mode, DG-ID, and optional WIRES-X linking (Yaesu FT5D Operating Manual; Yaesu FTM-400 Quick Manual; Yaesu FTM-400 DG-ID / WIRES-X guide; ARRL Technician Question Pool).

Best first setup: save K9IIK FM as 442.275 / +5.000 / PL 114.8 / FM, and save K9IIK AMS as 442.275 / +5.000 / DG-ID 00/00 / AMS. Start with the AMS memory, listen first, then ask for a short digital audio check (SARC repeater page; Yaesu FT5D Operating Manual; Yaesu FTM-400 Quick Manual).

The SARC Fusion repeater in practical terms

Published repeater values to use
Parameter Value to use Practical note
Repeater output / radio receive 442.275 MHz Published on the current SARC repeater page.
Repeater input / radio transmit 447.275 MHz Derived from the current SARC listing of +5 MHz input for 442.275 MHz.
Offset +5.000 MHz Use this if your radio is not picking the shift correctly by band plan.
Analog PL 114.8 Hz Required for the analog FM memory.
Fusion capability Dual-mode FM + C4FM digital SARC says the repeater automatically recognizes analog FM and Fusion.
Default WIRES-X room IL-K9IIK-ROOM / #40294 This is the current room label on the SARC repeater page.
Recommended starting DG-ID TX 00 / RX 00 Safe default unless SARC publishes a different DG-ID.

Source basis for the table above: SARC repeater page and SARC 2021 Fusion update, with operating behavior aligned to Yaesu System Fusion documentation.

Parameters explicitly treated as UNSPECIFIED in this article
Item Status What to do for now
Special DG-ID requirement other than 00 UNSPECIFIED Start with TX 00 / RX 00.
User policy for changing the repeater’s room UNSPECIFIED Assume the published room is the normal parked room unless a control operator says otherwise.
Published YSF reflector for the repeater itself UNSPECIFIED Treat native repeaters as WIRES-X unless the club documents a different policy.
Digital-only access tone or other gate value UNSPECIFIED Not normally required in Fusion; use the published RF settings and DG-ID 00/00.

Club operating takeaway: this repeater is best understood as one shared RF resource that supports three member behaviors: plain old analog FM, local Fusion digital voice, and optional WIRES-X linking when appropriate. That mixed-mode migration path is the design goal Yaesu gives for System Fusion repeaters and AMS-capable radios (SARC 2021 Fusion update; Yaesu System Fusion overview).

Fusion modes, DR versus radio settings, and what does not apply

Yaesu System Fusion mixes ordinary analog FM with C4FM digital. Yaesu describes DN as the normal digital voice/data mode, VW as the higher-fidelity digital voice mode, and AMS as the automatic mode that detects whether the received signal is FM or C4FM and switches accordingly. For a mixed club repeater like SARC’s, AMS is the best default unless you have a specific reason to force FM or DN (Yaesu System Fusion overview; Yaesu System Fusion technical text; SARC 2021 Fusion update).

What matters on Fusion, and what does not
Item Applies to Fusion on K9IIK? How to treat it
Receive frequency, transmit shift, analog tone Yes These are the repeater basics. Use 442.275, +5.000, and 114.8 Hz for the FM memory.
FM, AMS, DN, VW Yes FM for analog-only, AMS for mixed-mode convenience, DN when you want a digital-only voice path, VW only if conditions are strong and you specifically want the higher-fidelity mode.
DG-ID Yes Use TX 00 / RX 00 as the baseline unless the club publishes something more specific.
WIRES-X room or node selection Yes, when linking Only needed when you intentionally use internet linking.
DR or repeater-list entry Sometimes Helpful as a convenience, but verify its underlying values against the current SARC page. Directory entries and radio lists are not a substitute for checking the actual repeater settings.
Color code No DMR only. Not applicable to Fusion.
RPT / URCALL / DST No D-STAR only. Not applicable to Fusion repeater access.

The easiest way to think about DR on a Yaesu radio is that it is a convenience layer. A DR entry or repeater-list entry may save time, but what really determines whether the repeater works are the stored RF and digital settings inside the radio: frequency, shift, tone if you are on FM, operating mode, DG-ID, and optional WIRES-X node or room selection. That is why it is smart to verify the club repeater manually even if your radio offers a DR entry for it (inference drawn from the Yaesu FT5D Operating Manual and Yaesu FTM-400 Quick Manual).

Simplex versus repeater

In simplex, the radio transmits and receives on the same frequency and the repeater shift is set to SIMPLEX. In repeater operation, the radio uses a shift and, in analog FM, usually a tone as well. On the FT5D, Yaesu exposes repeater shift directly as SIMPLEX / -RPT / +RPT. For a simple radio-to-radio FM check, common U.S. calling frequencies include 146.520 MHz and 446.000 MHz; for a Fusion simplex test, coordinate a locally clear simplex frequency because SARC does not publish a club Fusion simplex channel on the reviewed pages (Yaesu FT5D Operating Manual; ARRL repeater basics; SARC site review).

Hotspot versus repeater

A hotspot is usually a low-power personal internet gateway. A repeater is shared local RF infrastructure. ARRL’s current Technician question pool defines the hotspot in that internet-assisted digital-voice context, and Yaesu adds an important Fusion-specific caution: many third-party hotspots connect to YSF or FCS reflectors rather than to native WIRES-X. So if your radio behaves one way on a hotspot and another way on K9IIK, that is normal and does not by itself indicate a radio problem (ARRL Technician Question Pool; Yaesu System Fusion documentation about hotspot differences).

flowchart TD
    A[Need to use the SARC 442.275 repeater] --> B{What do you want to do?}
    B -->|Join an analog net or talk to FM-only users| C[Select K9IIK FM\n442.275 / +5 / PL 114.8 / FM]
    B -->|First Fusion attempt or mixed activity| D[Select K9IIK AMS\n442.275 / +5 / DG-ID 00/00 / AMS]
    B -->|Intentional digital voice test| E[Select K9IIK DN or AMS]
    E --> F{Need internet linking?}
    F -->|No| G[Use the repeater as a local Fusion machine]
    F -->|Yes| H[Use WIRES-X on the correct band,\nconfirm the room or node,\nand disconnect cleanly when done]
Decision flow for first-time SARC Fusion use. Keep the raw Mermaid code block intact in WordPress; use the snippet at the top of the article to render it on the front end.

FT5D setup

The FT5D is an excellent match for a two-memory SARC workflow because Yaesu explicitly documents that memory storage on the radio includes operating frequency, repeater shift, tone information, and TX/RX DG-ID. For club use, save one memory as K9IIK FM and one as K9IIK AMS. If you later want a forced digital-only voice path, duplicate the AMS memory as K9IIK DN (Yaesu FT5D Operating Manual).

Recommended FT5D settings for K9IIK
Function Menu path or control K9IIK FM K9IIK AMS
Working band A-band preferred A-band A-band, especially if you may use WIRES-X later
Receive frequency VFO entry 442.275 MHz 442.275 MHz
Auto repeater shift CONFIG → 14 RPT ARS ON ON
Manual shift if needed CONFIG → 15 RPT SHIFT +RPT +RPT
Shift amount if set manually CONFIG → 16 RPT SHIFT FREQ 5.000 MHz 5.000 MHz
Analog tone mode SIGNALING → 11 SQL TYPE TONE OFF for a dedicated digital memory
Analog tone frequency SIGNALING → 12 TONE SQL FREQ 114.8 Hz Not used for the dedicated digital memory
Operating mode Mode selection FM AMS/Auto to start; use DN if you want a forced digital voice memory
DG-ID Digital settings Not used for analog access TX 00 / RX 00
WIRES-X DG-ID WIRES-X → 5 DG-ID Not needed AUTO
Suggested memory tag Memory label K9IIK FM K9IIK AMS
FT5D step-by-step memory procedure
Step Do this Result
Tune the repeater Put the repeater on A-band and enter 442.275 MHz. You are listening on the correct club output.
Set the shift Leave RPT ARS ON or manually set +RPT and 5.000 MHz. Your transmit path should land on 447.275 MHz.
Build the analog memory Set SQL TYPE to TONE, set the tone to 114.8 Hz, and force FM mode. This becomes K9IIK FM.
Store the analog memory Press and hold V/M, choose a memory channel, save it, and label it K9IIK FM. The analog repeater memory is ready.
Build the Fusion memory Keep the same receive frequency and shift, use AMS for the operating mode, and verify DG-ID TX 00 / RX 00. This becomes K9IIK AMS.
Store the Fusion memory Repeat the save procedure and label the new memory K9IIK AMS. You now have separate analog and Fusion entries.
Make the first test Select K9IIK AMS, listen first, then ask for a brief digital audio check. You confirm the Fusion path before trying WIRES-X.

If you decide to try WIRES-X on the FT5D, keep the repeater on A-band and leave WIRES-X DG-ID at AUTO unless the connected node requires something different. Yaesu’s FT5D WIRES-X manual documents local node search, room selection, and clean disconnect behavior; that is worth reading before you move beyond simple local repeater use (Yaesu FT5D WIRES-X manual).

FTM-400 setup

This article treats “FT-400” as the Yaesu FTM-400DR/XDR family, because that is Yaesu’s Fusion-capable mobile platform and the official manuals are published under that family name. The single most important operating rule on the FTM-400 is that Band A is the digital/analog side, while Band B is analog only. If you want Fusion, put the SARC repeater on Band A (Yaesu FTM-400 product page; Yaesu FTM-400 Quick Manual).

Recommended FTM-400 settings for K9IIK
Function Where to set it K9IIK FM K9IIK AMS
Working side Main operating side Band A Band A
Receive frequency Band A VFO 442.275 MHz 442.275 MHz
Repeater shift Band A repeater settings +5.000 MHz +5.000 MHz
Operating mode Mode key cycles Auto → DN → VW → FM FM Auto/AMS to start; DN if you want a digital-only voice memory
Analog tone Band A tone settings 114.8 Hz Not used for the dedicated digital memory
DG-ID Hold GM or use the DG-ID settings Not relevant to analog access TX 00 / RX 00
WIRES-X DG-ID DISP(SETUP) → WIRES-X → 5 DG-ID Not needed AUTO
Suggested memory tag Memory label K9IIK FM K9IIK AMS
FTM-400 step-by-step memory procedure
Step Do this Result
Move the repeater to Band A Put the SARC memory or VFO frequency on Band A. Digital modes and WIRES-X are available.
Tune the repeater Enter 442.275 MHz. You are listening on the correct club output.
Set the shift Apply +5.000 MHz shift and verify that transmit would land on 447.275 MHz. The repeater path is correct.
Build the analog memory Cycle the mode to FM and set the analog tone to 114.8 Hz. This becomes K9IIK FM.
Store the analog memory Use the radio’s Memory Write function and save the channel as K9IIK FM. The FM memory is ready for analog nets and legacy users.
Build the Fusion memory Cycle the mode to Auto for AMS or DN for forced digital voice, then verify DG-ID TX 00 / RX 00. This becomes K9IIK AMS or K9IIK DN.
Store the Fusion memory Save a second memory and label it K9IIK AMS. You now have separate analog and Fusion entries.
Optional WIRES-X test Use the FTM-400’s WIRES-X controls to search for the local node or room. Yaesu documents holding DX to search and using the microphone’s * key to disconnect cleanly. You can test linking without leaving the node connected unintentionally.

Yaesu’s quick manual says to “normally use the auto mode (AMS)” on the FTM-400. That advice fits the SARC repeater well because the club explicitly describes it as a mixed-mode machine that recognizes analog FM versus Fusion automatically. Put differently: if you just want your first Fusion experience to work with the fewest decisions, use Band A + K9IIK AMS (Yaesu FTM-400 Quick Manual; SARC 2021 Fusion update).

Operating practice, audio quality, linking, and troubleshooting

Best practices for SARC use

The most practical club habit is to listen first, then choose the memory that matches the activity you hear. If the machine is clearly carrying analog FM traffic, use K9IIK FM. If you are not sure, or you are intentionally testing the digital side, use K9IIK AMS. Leave a short pause between overs so others can break in and the repeater has time to reset; that is sound repeater practice regardless of mode (ARRL repeater basics; SARC 2021 Fusion update).

For audio quality, keep microphone technique simple and consistent. Speak in a normal voice, keep the mic position steady, and ask for a quick audio report rather than assuming the mode is at fault. Yaesu distinguishes DN and VW for a reason: DN is the normal digital repeater voice mode, while VW is the higher-fidelity option when conditions are strong. At the edge of coverage, ordinary FM may remain more intelligible than digital voice, so it is entirely normal to fall back to FM when RF is marginal (Yaesu System Fusion overview; Yaesu System Fusion technical text).

For linking, treat the published room as the repeater’s normal parked room unless the club says otherwise. The reviewed SARC material publishes the room but does not document a detailed user policy for moving the repeater between rooms, so the most club-friendly assumption is to avoid casual room changes during general local use and to disconnect cleanly after intentional WIRES-X operation. Also remember that YSF and WIRES-X are not the same thing: many hotspots reach YSF/FCS-style reflectors rather than native WIRES-X (SARC repeater page; Yaesu FT5D WIRES-X manual; Yaesu FTM-400 DG-ID / WIRES-X guide; Yaesu System Fusion hotspot guidance).

Troubleshooting checklist

  • Validate the transmit frequency first. For current SARC programming, the radio should transmit on 447.275 MHz, not 447.425 MHz.
  • If you are in FM, verify the tone. The analog PL should be 114.8 Hz.
  • If you are in Fusion, reset DG-ID to the baseline. Start with TX 00 / RX 00.
  • On the FTM-400, confirm the repeater is on Band A. Band B is analog only.
  • If you are unsure which mode the other station is using, use AMS. That is what AMS is for on a mixed-mode machine.
  • Do not compare hotspot behavior directly to repeater behavior. The network path may be different even if the radio is the same.
  • If digital audio is choppy, try FM. Weak-signal RF still matters on Fusion.
  • Ask for an audio report instead of repeated kerchunks. It is more useful and more courteous.
Quick symptom map
Symptom Likely cause First action
You hear the repeater but cannot key it in FM Wrong tone or wrong shift Check +5.000 MHz and 114.8 Hz.
FM works but Fusion does not Wrong mode or restrictive DG-ID Switch to AMS and set DG-ID 00/00.
FTM-400 seems to lose Fusion functions The repeater is on Band B Move it to Band A.
Hotspot works but the repeater does not Different RF and network path Recheck the actual repeater frequency, shift, tone, and DG-ID values.
Digital audio sounds worse than expected Weak signal, mic technique, or unsuitable digital mode Try DN instead of VW, improve mic placement, or switch to FM at the edge of coverage.

Troubleshooting guidance above is based on the SARC repeater parameters and Yaesu’s mode/DG-ID/WIRES-X behavior as documented in the FT5D and FTM-400 manuals.

FAQ, prioritized sources, and changelog

Short FAQ

Do I need PL 114.8 Hz for Fusion digital? Not as the primary Fusion control described here. The club publishes 114.8 Hz for analog FM access. For Fusion, begin with the published repeater frequency and shift, then use AMS or DN with DG-ID 00/00 (SARC repeater page; Yaesu FT5D Operating Manual; Yaesu FTM-400 DG-ID / WIRES-X guide).

Should I use AMS or DN? Use AMS first, because the SARC repeater is explicitly described as a mixed-mode machine that auto-recognizes analog FM versus Fusion. Use DN when you want to force a digital voice path intentionally (SARC 2021 Fusion update; Yaesu System Fusion overview).

Where do I enter color code, RPT, URCALL, or DST? For this Fusion repeater, you generally do not. Color code is a DMR concept, while RPT / URCALL / DST are D-STAR-style routing fields. The relevant Fusion controls are mode, DG-ID, and WIRES-X, plus the normal repeater frequency/shift/tone basics (ARRL Technician Question Pool; Yaesu FT5D Operating Manual; Yaesu FTM-400 DG-ID / WIRES-X guide).

What if my hotspot works but K9IIK does not? Treat them as different systems until proven otherwise. A hotspot is normally an internet-assisted personal gateway; K9IIK is shared club RF infrastructure. The settings, mode behavior, and linking path may differ (ARRL Technician Question Pool; Yaesu System Fusion hotspot guidance).

Which input should I really program? Program 447.275 MHz. This article uses the current SARC repeater page, which lists 442.275 MHz with +5 MHz input shift, and therefore treats the older 447.425 MHz figure as a likely typo (SARC repeater page; SARC 2021 Fusion update).

Prioritized sources

  1. Schaumburg Amateur Radio Club repeater page — current repeater frequency, analog PL, and WIRES-X room details.
  2. SARC “442.275 MHz UHF Repeater Update – Yaesu Fusion” — club explanation of mixed-mode automatic recognition and the earlier room/input notes.
  3. Yaesu FT5D Operating Manual — repeater shift, tone, memory contents, and DG-ID behavior.
  4. Yaesu FT5D WIRES-X Manual — WIRES-X setup and operation on the FT5D.
  5. Yaesu FTM-400DR/XDR product page — model-family identification.
  6. Yaesu FTM-400 Quick Manual — Band A digital rule, mode cycle, and AMS guidance.
  7. Yaesu FTM-400 DG-ID / WIRES-X Guide — DG-ID defaults and WIRES-X control points.
  8. Yaesu System Fusion overview — Fusion modes and AMS concept.
  9. Yaesu System Fusion technical text — DN versus VW and digital-versus-FM tradeoffs.
  10. ARRL Technician Question Pool — color code and hotspot context.
  11. ARRL repeater basics — repeater etiquette and pause-between-overs guidance.

Changelog and assumptions

Assumption one: “FT-400” is treated as the FTM-400DR/XDR family, because that is Yaesu’s System Fusion mobile platform and the documentation set used here is published under that family name.

Assumption two: the earlier 447.425 MHz input figure from the 2021 SARC post is treated as a likely typo. This article uses 447.275 MHz because the current SARC repeater page publishes 442.275 MHz with +5 MHz input shift.

Assumption three: because the reviewed SARC material does not publish a special digital DG-ID or a detailed room-changing policy, those items are marked UNSPECIFIED and the practical recommendation is to begin with DG-ID 00/00 and the published default room.

Implementation note: menu wording can vary slightly by firmware revision, especially on the FTM-400. The operating values in this article are the critical part; if a menu label is slightly different on your radio, choose the nearest equivalent item in the Yaesu manual.

Radio Events

Hamvention 2026 Gear Roundup for SARC

Executive summary

As of Saturday, May 16, 2026, Hamvention is still in progress in Dayton, so this roundup reflects the best public information available through the show’s first full day and early Saturday coverage. The broad pattern this year is clear: portable and hybrid operation remains the hottest segment; Yaesu is pushing a full family of weak-signal-friendly mobiles and its FTX-1 platform; Icom drew heavy interest with the still-unreleased ID-5200 and the newly released AH-6 tuner; Elecraft landed the most interesting portable antenna announcement; and Kenwood’s TH-D75A remains the safest premium handheld buy while the TM-D750A is still a reservation story, not yet a finished retail product. Hamvention itself runs May 15–17, 2026, and ARRL reported large crowds across the exhibit halls on opening Friday.

For SARC members, the highest-confidence purchases today are the Yaesu FTX-1 Field, Yaesu FTX-1 Optima, Yaesu FTM-310DR, Yaesu FTM-150R, and Kenwood TH-D75A because they are public, priced, and already in the dealer/review ecosystem. The most exciting “watch list” products are the Icom ID-5200, Icom AH-6, Elecraft AX4, and Kenwood TM-D750A—all compelling, but each still has at least one major open question around U.S. pricing, finalized availability, or real-world field reviews.

My short take: if SARC members want one radio that best captures the Hamvention 2026 mood, it is the Yaesu FTX-1 Optima—not because it is cheap, but because it most directly matches how many club members actually operate now: field-first, shack-capable, and mode-agnostic. If the club wants a practical value pick, the FTM-150R and FTM-310DR are the strongest budget-to-function stories in this year’s public pricing. If the club wants the most interesting non-radio product, it is the Elecraft AX4.

What stood out on the floor

The strongest theme was integration. Newer products are combining features that used to require separate gear or hard tradeoffs: APRS with D-STAR, field QRP with detachable 100 W amplification, dual-watch mobile operation with improved weak-signal filtering, or compact portable antennas that now tolerate much higher power than older “ultraportable” designs. That theme shows up in the Icom ID-5200, Kenwood TH-D75A, Kenwood TM-D750A, the Yaesu FTX-1 line, and the Yaesu 510/310/150 mobiles.

The second theme was portable operation without apology. The FTX-1 series is explicitly built around field use; the AH-6 is a compact weather-resistant tuner for long-wire or 50-ohm antennas; and the AX4 is Elecraft’s attempt to bridge the gap between tiny QRP whips and bulkier portable verticals. Hamvention’s own format and crowd profile continue to reward this kind of equipment.

The third theme was good but incomplete news from pre-release products. The Icom ID-5200 and Kenwood TM-D750A are exactly the sort of radios that create aisle traffic and club chatter, but they are still not fully settled U.S. buy-now products. That matters for an article aimed at SARC members who want actionable buying advice rather than just excitement.

The strongest theme was integration

Product Comparison

Product Category Key feature Price Verdict

Product Category Key feature Price Verdict

Icom ID-5200
VHF/UHF
 Touchscreen D-STAR mobile with Wi‑Fi, Bluetooth, APRS/GNSS, airband receive, and dual watch U.S. price TBD; HRO is taking a $35 reservation deposit and says U.S. sale is not yet formally released/FCC approved. Most intriguing unreleased mobile, but still a wait-and-see buy.

Icom AH-6
Accessory
 IP54 HF/6 m automatic tuner for long-wire or 50-ohm antennas U.S. price TBD; officially released May 15, 2026. Most practical new accessory for field HF operators.

Yaesu FTX-1 Field
Portable
 All-band / all-mode SDR with battery-powered field operation up to 10 W external $1,499.95 regular; $1,299.95 HRO Hamvention-period street after promos. Best all-round portable if you do not need the 100 W dock.

Yaesu FTX-1 Optima
Portable
 Same field head plus detachable 100 W amplifier/base package $1,949.95 regular; $1,699.95 HRO Hamvention-period street after promos. Most versatile radio at the show if budget is secondary.

Yaesu FTM-510DR
VHF/UHF
 Flagship dual-band C4FM mobile with Super-DX, optional ASP, improved PMG/MAG behavior Around $649.95 street in public HRO promo pricing. Best Yaesu mobile for heavy daily use.

Yaesu FTM-150R
VHF/UHF
 55/50 W FM dual-band mobile with Super-DX and optional ASP upgrade $339.95 regular; $319.95 HRO street after coupon. Best analog value pick.

Yaesu FTM-310DR
VHF/UHF
 Lower-cost C4FM dual-band with true dual receive, AESS audio, Super-DX/ASP $499.95 regular; $399.95 HRO Hamvention-period street after promos. Best value digital mobile.

Elecraft AX4
Antenna
 8-foot whip, 40–10 m, up to 100 W SSB/CW, tripod/table clamp portability Price TBD; Elecraft says production is anticipated in July 2026 pending materials. Most interesting new portable antenna.

Kenwood TH-D75A

VHF/UHF

 Premium tri-band HT with APRS, D-STAR, GPS, digipeater, dual D-STAR receive $549.95 current HRO street; eHam lists $750 MSRP. Highest-confidence premium handheld buy.

Kenwood TM-D750A
VHF/UHF
 APRS/D-STAR/GPS triband mobile with color LCD and dual receive U.S. price TBD; dealer pages show a $35 reservation deposit and Q3 2026 ETA. High-interest, high-uncertainty.

The citations in the product names and price cells link to the manufacturer, dealer, or review pages that also carry product photos/spec sheets where publicly available.

Product-by-product analysis

SARC Ham Radio Hamvention Recommended Products.

Icom ID-5200

Manufacturer: Icom. Category: VHF/UHF. Key features: 144/430 MHz dual-band operation, FM and DV, simultaneous dual reception, touchscreen interface, airband receive, Wi‑Fi, Bluetooth, internal gateway functions, APRS/GNSS features, USB-C, and microSD support. Price: U.S. price not announced. Availability: Public U.S. dealer pages still show reservation or stock-alert status rather than a completed U.S. retail launch; HRO explicitly says the radio has not been formally released for sale in the U.S. and is not yet FCC-approved for U.S. sale. Target user: D-STAR mobile operators, APRS users, EMCOMM-focused operators, and anyone who wanted a true successor to the ID-5100 with modern connectivity.

The case for the ID-5200 is obvious: it looks like the most feature-complete next-generation D-STAR/APRS mobile now publicly visible, and it directly answers the market’s long-standing demand for a more connected, better-displayed Icom mobile. The case against it is equally obvious: no U.S. price, no firm U.S. availability, and no meaningful body of real-world field reviews yet. My verdict for SARC is simple: watch closely, but do not rush to sell an existing ID-5100 or TM-V71/TM-D710-class setup until U.S. pricing and first real reviews land.

Pros: probably the strongest VHF/UHF/D-STAR feature stack shown at Hamvention.

Cons: still pre-release in the U.S. Aggregate opinion: Most promising unreleased mobile of Hamvention 2026.

Icom AH-6

Manufacturer: Icom. Category: Accessory. Key features: automatic antenna tuning from 1.8–54 MHz, long-wire and 50-ohm antenna support, IP54 weather resistance, 120 W max input, 200 memories, reduced RF output during tuning, and a package that dealer literature describes as 50% smaller and lighter than the AH-730. Price: no public U.S. MSRP/street price yet. Availability: officially released on May 15, 2026. Target user: portable HF, field-day setups, emergency deployments, and operators who want faster, cleaner multiband long-wire deployments.

This is one of the smartest practical products shown this year because it targets a real operating pain point rather than a spec-sheet fantasy. A compact, weather-resistant tuner with long-wire support is exactly the kind of thing that matters to SARC members who do Field Day, temporary deployments, POTA, or backup-station planning. The downside is not technical; it is commercial: U.S. price visibility is still poor. Still, if Icom prices it sensibly, the AH-6 could become one of the year’s quiet winners.

Pros: highly relevant to real field operation, weather-resistant, broad HF/6 m coverage.

Cons: U.S. price still unknown. Aggregate opinion: One of the most useful new products at Hamvention 2026.

Yaesu FTX-1 Field

Manufacturer: Yaesu. Category: Portable. Key features: HF/50/144/430 MHz all-mode SDR coverage, wide receive coverage from 30 kHz to 174 MHz and 400–470 MHz, two independent receivers, C4FM/WIRES-X capability, battery-backed field operation, and a modular “field head” concept shared with the Optima. Price: $1,499.95 regular, with public Hamvention-period street pricing at $1,299.95 after promotions. Availability: available now from dealers. Target user: portable operators, mixed-mode club operators, backpack/vehicle field use, and members who want one radio to cover nearly everything.

The FTX-1 Field makes a strong argument as the best pure “club do-everything” portable radio in this roundup. It covers HF through UHF, it is built around actual field use, and it has already moved past the teaser phase into real dealer pricing and real user reviews. Early reviews on eHam show that users like the concept, though they also suggest the platform is still working through some first-generation quirks—which is normal for ambitious hybrid radios.

Pros: unusually broad operating envelope, serious feature density, available now.

Cons: still expensive, and early reviews suggest a few rough edges. Aggregate opinion: Best “one-radio portable station” shown at Hamvention.

Yaesu FTX-1 Optima

Manufacturer: Yaesu. Category: Portable. Key features: the same FTX-1 field head plus the detachable SPA-1 100 W RF power amplifier, giving the system both field-QRP/QRP+ capability and home/mobile 100 W capability. Price: $1,949.95 regular, with Hamvention-period public HRO street pricing at $1,699.95 after promotions. Availability: available now. Target user: SARC members who split time between portable ops and a regular home station, plus EMCOMM operators who want fewer boxes.

If the Field version is the smartest portable choice, the Optima is the most ambitious systems choice. It is expensive, but it solves a real problem: many operators do not want a separate IC-705-style field radio and a second 100 W shack/mobile rig. One eHam review summary is notably positive on the overall concept while also flagging some “niggles,” including amplifier-path limitations such as lack of an ALC input for use with an external linear. That keeps the Optima from being a universal recommendation, but not from being the most flexible radio in the roundup.

Pros: unmatched portable-to-shack flexibility in one platform.

Cons: high price; early user reports note some annoyances. Aggregate opinion: Best choice for operators who want one premium transceiver ecosystem instead of two separate radios.

Yaesu FTM-510DR

Manufacturer: Yaesu. Category: VHF/UHF. Key features: 55/50 W C4FM/FM dual-band mobile operation, Super-DX weak-signal enhancement, optional SPU-1 board for ASP operation, refined PMG/MAG behavior carried over from the ASP model, optional Bluetooth, and a 3-year warranty. Price: public HRO street pricing has been around $649.95 after coupon promotions. Availability: available now. Target user: daily mobile operators, EMCOMM users, and SARC members who want a flagship dual-band mobile rather than a budget box.

This is not the sexiest product at Hamvention, but it may be one of the strongest actual buys. Yaesu has clearly decided that weak-signal receive improvements and memory-group usability are worth product-line emphasis, and the 510 is the cleanest expression of that approach. The tradeoff is value: if you are not going to use the richer feature set often, the cheaper 310 or even the analog 150 may make more sense.

Pros: polished flagship mobile, strong receive-side features, future-friendly ecosystem.

Cons: pricey, and full ASP benefits on the non-ASP version require the optional board. Aggregate opinion: Best Yaesu mobile for operators who live on VHF/UHF every day.

Yaesu FTM-150R

Manufacturer: Yaesu. Category: VHF/UHF. Key features: 55/50 W FM dual-band mobile, Super-DX capability, optional SPU-1 path to ASP, and a 3-year warranty. Price: $339.95 regular and $319.95 current public HRO street after coupon. Availability: available now. Target user: beginners, budget-minded mobile operators, and analog-first operators who do not need C4FM.

For SARC members who simply want a modern, capable dual-band mobile without paying flagship money, the FTM-150R is easy to like. It keeps the main utility features that matter to many analog users while leaving digital-mode complexity and cost off the bill. The downside is just as straightforward: if you want built-in digital networking or a more visibly premium operating environment, this is not that radio.

Pros: very strong value, straightforward path, upgradeable ASP option.

Cons: analog-only personality will not satisfy digital-focused buyers. Aggregate opinion: Best value analog mobile in the roundup.

Yaesu FTM-310DR

Manufacturer: Yaesu. Category: VHF/UHF. Key features: 55/50 W C4FM/FM dual-band operation, true dual receive including same-band combinations, AESS 6 W audio, Super-DX plus ASP behavior, dot-matrix display, and robust heat-sink design. Price: $499.95 regular and $399.95 public HRO Hamvention-period street after promotions. Availability: available now. Target user: first-time digital-mobile buyers, EMCOMM operators, and club members who want solid C4FM capability at a lower price than the 510.

This is arguably the best cost-versus-capability mobile in the Hamvention 2026 conversation. It gives up some of the 510’s flagship polish but keeps the pieces that matter most for actual use: real dual receive, good audio, weak-signal enhancements, and digital support. If the FTM-150R is the analog value pick, the FTM-310DR is the digital value pick.

Pros: excellent price-to-function ratio, true dual receive, digital-ready.

Cons: less premium than the 510. Aggregate opinion: Best budget-conscious digital mobile shown by a major manufacturer.

Elecraft AX4

Manufacturer: Elecraft. Category: Antenna. Key features: 8-foot telescoping whip, 40–10 m coverage with an external ATU, up to 100 W CW/SSB and 50 W data, up to 6 dB gain over Elecraft’s smaller 4-foot whips, quick deployment with BNC, table clamp/tripod compatibility, and packable 15-ounce field form factor. Price: not yet announced. Availability: Elecraft says production is anticipated in July 2026, pending material deliveries. Target user: portable operators, POTA/SOTA activators, and club members who sometimes run more than QRP in the field.

The AX4 is interesting because it addresses a real ceiling in portable operating. Small whips are wonderfully convenient, but many portable operators eventually want more efficiency and more power handling without stepping all the way up to a bulky mast-and-vertical kit. QRPer’s immediate reaction was that Elecraft is targeting exactly that middle ground, and that feels right. The lack of a published price is the only thing keeping this from being an instant-buy recommendation. Elecraft’s companion BL3 balun also matters here because the company explicitly designed it to keep RF off the coax shield for higher-power, non-resonant-band use.

Pros: unusually thoughtful bridge between QRP whips and “real” portable verticals, genuinely portable, higher power handling than many readers will expect.

Cons: requires an ATU and proper radial practice; price still unknown. Aggregate opinion: Most compelling new antenna shown at Hamvention 2026.

Kenwood TH-D75A

Manufacturer: Kenwood. Category: VHF/UHF. Key features: 144/220/430 MHz handheld, APRS, D-STAR, simultaneous reception of two D-STAR signals, reflector terminal mode, digipeater function, USB-C, built-in GPS, and IF filters that improve adjacent-signal behavior during SSB/CW operation. Price: $549.95 current HRO street; eHam lists $750 MSRP. Availability: available now. Target user: APRS-heavy operators, EMCOMM members, portable public-service users, and anyone wanting a premium HT rather than an inexpensive basic handheld.

The TH-D75A is not the newest thing at the show, but it is still one of the best things you can actually buy with confidence. Unlike the still-settling pre-release mobiles, the TH-D75A is established enough to have both dealer pricing and a growing body of owner feedback. For a club with mixed operating styles, that matters. The downside is predictable: it is a premium handheld at a premium price. But if a member specifically wants top-end APRS/D-STAR handheld capability, this is the safest premium recommendation in the roundup.

Pros: broad capability, mature enough to buy now, extremely strong for APRS/D-STAR users.

Cons: expensive for an HT. Aggregate opinion: Best premium handheld on the Hamvention floor for buyers who want certainty today.

Kenwood TM-D750A

Manufacturer: Kenwood. Category: VHF/UHF. Key features from current public dealer pages: 144/220/430 MHz triband mobile design for the Americas, APRS, D-STAR, analog operation, built-in GPS with QZSS support, color LCD, and simultaneous dual-band reception. Price: no public retail price yet, but dealer pages are taking $35 reservation deposits. Availability: dealer pages currently point to Q3 2026 ETA rather than a shipping retail state. Target user: APRS/D-STAR mobile specialists, EMCOMM mobile installs, and operators who have been waiting for a true premium Kenwood successor in the mobile space.

This is a classic Hamvention “magnet” product: everybody wants it to be real, and the reservation activity proves there is serious appetite. But from a buyer’s perspective, it is still unfinished news. The excitement is justified; the certainty is not. For SARC members, the right posture today is enthusiasm with discipline. Keep it on the club radar—just do not budget it as a done deal until a real retail price and broader product documentation are public.

Pros: potentially the dream APRS/D-STAR triband mobile for North American operators.

Cons: retail pricing not public, reservation-only status, limited public final-detail confirmation. Aggregate opinion: One of the hottest buzz products at Hamvention—but not yet one of the safest buys.

Buying recommendations for SARC members

If you want one premium radio that can honestly cover portable, home, HF, VHF/UHF, and digital voice without forcing a two-radio strategy, buy the Yaesu FTX-1 Optima—it is expensive, but it is the clearest “all of the above” answer in this roundup.

If you want the best true field-first radio and do not need the detachable 100 W amplifier, the Yaesu FTX-1 Field is the smarter value than the Optima.

If you need a new VHF/UHF digital mobile without spending flagship money, the Yaesu FTM-310DR is the best pound-for-pound buy in this list.

If you are a budget-minded FM mobile operator or you mainly want a dependable 2 m/70 cm mobile for commuting, repeater work, and public-service backup, the Yaesu FTM-150R is the cleanest value choice.

If APRS, D-STAR, and handheld flexibility matter more to you than saving money, the Kenwood TH-D75A is the premium handheld to buy now rather than later.

If you are a portable antenna experimenter and can tolerate some launch uncertainty, get on Elecraft’s AX4 wait list—but only if you are comfortable using an ATU and managing radials properly.

If you are tempted by the Icom ID-5200 or Kenwood TM-D750A, my advice is to wait for final U.S. pricing and first real field reviews before spending money beyond a refundable or acceptable reservation deposit.

Release timeline

The timeline below uses the clearest public reveal / availability milestones I could verify from manufacturer pages, dealer pages, and reputable ham-radio outlet coverage.

Show code

Those milestones come from Yaesu’s product/dealer pages for the FTX-1 series, dealer pre-release pages for the ID-5200, Icom’s AH-6 release notice and dealer description, Elecraft’s AX4 announcement/wait-list page, and current dealer ETA language for the TM-D750A.

Open questions and limitations

This article is intentionally buyer-focused, so I excluded some booth buzz items—most notably Icom’s X-026 concept—from the scored shortlist because the public technical and commercial details were still too incomplete to support a responsible “should SARC members buy this?” recommendation. Hamvention itself also remains in progress as of May 16, 2026, so late-show announcements could still change the picture.

The biggest unresolved commercial questions are U.S. pricing and ship timing for the Icom ID-5200, Icom AH-6, Elecraft AX4, and Kenwood TM-D750A. The biggest unresolved review question is that the newest products do not yet have the depth of hands-on public field testing that mature products like the TH-D75A and now the FTX-1 family already have.

For SARC readers, that leads to a clean bottom line: buy the mature gear now; put deposits or watch-list status on the pre-release gear only if you are comfortable being early.

SARC in the Park

SARC in the Park Kicks Off Another Outdoor Operating Season

SARC in the Park
 May 9, 2026

SARC in the Park is the club’s warm-weather replacement for Construction Project. It is intended to get members operating outside with portable radios, go-boxes, antennas, and batteries. The activity typically takes place on the front lawn of the Schaumburg Community Recreation Center on the second and fourth Saturdays of the month and is useful for learning to operate under “non-ideal conditions” (see n9rjv.org/activities/sarc-in-the-park).

Robert Kocourek (W9RKK) working SSB with his Hex-Beam antenna.

Event Facts

Date May 9, 2026
Time 7:00 AM–12:00 PM
Location Front lawn of the Community Recreation Center, 505 N. Springinsguth Road, Schaumburg, Illinois
Weather observed from photos Sunny and dry, with blue sky, light high cloud, and full spring leaf-out.
Notable equipment observed Large wire-beam-style antenna array, tall guyed mast, folding-table field station, HF transceiver, tailgate work surface with radio gear and paper log sheet, station sign “SARC in the Park Amateur Radio Station KB9RCR.”
Attendance / QSOs Twenty-three SARC members in attendance. POTA contacts in: FL, PA, NH, WA, UT, OK, RI, WV, TX, MD, ID, CA, MA, WI, and MO.

SITP is the club’s warm-weather replacement for Construction Project and is intended to get members operating outside with portable radios, go-boxes, antennas, and batteries. This activity typically takes place on the front lawn of the Schaumburg Community Recreation Center on the second and fourth Saturdays of the month and is useful for learning to operate under “non-ideal conditions” (see n9rjv.org/activities/sarc-in-the-park).

The Park District’s facility page establishes the official CRC location as 505 N. Springinsguth Road, Schaumburg (see parkfun.com/facilities/community-recreation-center).

Roger Young (WB9NBA) setting up his MFJ mast.

The May 9, 2026 session was well aligned with SARC’s mission for the activity. Together, this documents operating, setup, adjustment, and support work rather than a purely social gathering.

The archival record on n9rjv.org’s SARC in the Park search page shows that this mix of experimentation and public demonstration is typical. A 2024 kickoff article emphasized the basics of successful outdoor activation—radio, power source, antenna, coax, and keeping the setup simple (see SARC in the Park Starts May 11).

A 2024 time-lapse post highlighted the setup of a hex beam antenna and associated equipment (see SARC in the Park Setup Time-Lapse). A 2023 report described an end-fed wire in a tree at the first outing of that season, while a 2019 report described several portable stations, a dipole, and operating that ran through noon (see First SARC in the Park and SARC in the Park – Saturday May 11th 2019).

Andrew Rafferty (K9ABR) working CW with an end-fed dipole antenna up in a tree, with Jeff L. Gembala (N9QF) watching.

The takeaway is that SARC in the Park functions as a recurring field laboratory for portable amateur radio. The May 9, 2026 event show several layers of that practice at once: a public-facing operating table, vehicle-supported station support, mast handling, and larger antenna deployment.

That range matters because it reflects both preparedness and accessibility. Smaller stations demonstrate that portable operation can be simple; the larger structures demonstrate that the event also supports more ambitious antenna work.

Joseph M. Barela (KB9RCR) & Avinash Kathamuthu talking ham radio at Joe’s station.

Source Basis