ARRL Current FMT Results

Submissions

The following submissions have been received for the November 13, 2026 Frequency Measuring Test. Results will be available after 0200Z, November 16, 2026.

Entries (n=74):

Call Sign

QTH

Area

Grid

Soapbox

AA1P

CM88pl

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

My first FMT! Had a blast; big thanks to W8RKO and K5CM for putting it on and shoutout to the 80m digital folk who paused transmission during the test :)

AA3I

FN20if

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Thank you W8RKO and K5CM for your efforts.
Always fun !

AA6LK

CM98kw

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Thanks Mike and Connie for running the event. Good readable signals with the usual multipath variability. 73, L-

AC8Y

FM18er

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

(none)

AD7CL

DM79jr

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO
K5CM	Y

First time trying the FMT, guessing I am way off. I lived in fear of hearing the IC-706 fan come on as, during calibration/warm-up, the rest of gear was accurate enough to show me +/- 3Hz variation as the radio thermal cycled (seemed stable when hot but swung in a big arc on the Spectrum Lab when the fan was on and about 1 minute after).

AF1R

FN42jh

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Ionosphere was very stable. The frequency of WWV 5 MHz and all four FMT signals were stable and did not bounce up and down very much.

I miss not having CHU available for a reference.

AF9A

EM69wv

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Thanks for another good FMT! W8RKO on 40m was only about peaking about 10dB above the noise. The other signals were 30dB+ above the noise.

AG5AT

EM63rq

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

(none)

AJ4YA

FM05st

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Well, I slept thru our April gathering, and barely stayed awake for this one. Even in my impaired state I had a blast. Thanks.

DC4HF

JO52mf

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO
K5CM

First time entry. Hello World! :-)

K0MZ

DM03ts

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Signal strength for both 40 meter sets were the same S-9 with little fades. W8RKO signal was S-9 with moderate fades. K5CM signal was S-8 with deep fades. Thank you Mike and Connie for this fun evening of the magic of radio. The FMT is always fun to prepare and participate.

K5CM

EM25ir

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Signals form Mike were strong.

K5ND

EM12kv

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Good signals on all four transmissions with S/N running at 30 to 40 and as high as 50.

K6LL

DM22qq

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

I totally forgot about this FMT until about 30 minutes before the first run, so nothing was warmed up or ready. Everything seemed to go too smoothly, so I'm wondering if I forgot something major!

K7JFD

DM43de

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

First Timer! Only strong signal was K5CM 40M, other 3 below 10dB S/N. WWV was good, so I know system was working. Already planning improvements for April. Thanks W8RKO and K5CM!

K7NG

CN73ui

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

When the frequencies were clear, signals were OK. I had more QSB on 40M than 80M, but the data collected was 'tighter' on 40M. Once again, the MFSK users made it hard to 'spot' the FMT signal, this time from K5CM. I still think an easy QRM fix would be to move the 80M FMT to 3503 +/-. FMT'ing is still great fun!

K8HN

EM79xq

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Nice signals into Southwest Ohio for both transimssions. Thanks to ARRL, and especially W8RKO and K5CM for their efforts.

K9JM

CM99lc

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Thanks for another FMT!! RKO 40m S7 to 10 over S9 .. CM 40m S8 to S9. RKO 80m S7 to S9 digi up CM 80m s7 right right in the middle of digi except for the start of the carrier

KA3AGT

FM18iv

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

(none)

KA7OEI

DN40ao

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Both sets of 80 and 40 meter signals were reasonably strong, but K5CM generally had a bit more QSB and Doppler shift - particularly on 80 meters. There were strong digital signals near the 80 meter frequency, but these had little effect on my measurement methods.

KA8BRK

EN81fc

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

W8RKO 40 Meter signal very weak here, submission is a wild guess. Other signals not quite as weak. QSB and static as well. Challenging! Thanks to Mike and Connie for all their efforts.

KB2HSH

FN03na

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Rough copy on 40 for both stations, but 80 was fantastic. Happy to have participated this November with Chuck N3CRT. Chuck always makes the FMT more fun! Happy Holidays and Happy New Year. May 2027 be a better year for all of us!!!

KB3HF

EM48qs

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO
K5CM	Y

Thanks for the opportunity again. Good signal in Midwest. Missed first 80M measurement due to computer problems. Waiting for the Spring session again.

KB4XR

FM18hw

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Bit of a science project this go-around in attempt to estimate that pesky doppler real-time. Could have used more testing.

No copy on WWV 2.5 MHz - so only a half a sandwich there. QSB on RKO 80m.

Always enjoyable and always thanks to W8RKO and K5CM.... and to the team that put FLDigi-FMT together.

KC3VNB

FN00dl

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Good signal quality - no CHU now to give rough guide to doppler :(
As always, thanks to W8RKO and K5CM! Big fun and 73.

KD2BD

FN20xd

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

This FMT came several hours after a Tornado Watch had ended. The storms cleared out in time, and the Geomagnetic Field was very quiet, resulting in stable propagation conditions. WWVB was very strong. Both Mike and Connie had strong signals, but Mike was the stronger of the two on both bands with less QSB and phase/frequency deviation than the longer path to Connie. TNX and GL to all. 73.000 de John, KD2BD

KD5MMM

EL19ds

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

CHU no longer on air, used WWV, Not Sure how it will work. Hope I'm close..

KD8RV

EN82mj

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Miss my CHU! The 10 MHz WWV signal was playing hard to get. 5 MHz was fine.
With the exception of a weak and doppler convoluted WRKO signal on 40 meters, nice signals here in SE Michigan.
Thank you Connie and Mike, and everyone else who works to have this happen. Vry 73 Greg

KE6ZLX

DM13ie

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Solid 40m copy into San Diego; 80m was very weak with moderate fading, making Fldigi work hard for a lock. Many thanks to K5CM and W8RKO for another fine FMT!

KG5RLD

EM30cd

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

My first individual FMT. Great fun!
Learnings-
1. Prepare well in advance of FMT day!
2, Once you begin recording data don't touch anything! Don't correct anything! It'll only make it worse!
3. Good idea to plot the raw data points to look for drift, jumps in values, etc, that could help spot a problem or support removing bad data.

KI4NVX

EL96bn

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO
K5CM	Y

40M -signals strong though some fading especially during call ups.
80M -didn't expect to capture either considering the antenna and QTH limitations at my winter, Florida condo association . . but K5CM signal came through! I really miss the CHU Frequency transmissions for better estimates of doppler. I interpreted (guesstimated) from a 10MHz characterization run just before the FMT window began, to pad the fldigi results a bit for my entries.

KJ6HYC

FM15mk

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Great test. One does not need specialized equipment for good results, a modern Software defined radio works well once setup appropriately.

KM4UDX

FM18iw

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO
K5CM	Y

Thanks to the very talented Leandra MacLennan AFIR for her kindness and hand holding. Her process document is here: https://drive.google.com/file/d/1Dmj4UACuPHyjLBdroiB0MLKJw4OZY-bT/view?usp=sharing

KW4XJ

FM18iv

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

My 1st time doing the ARRL FMT.

KX0O

EM38dk

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

(none)

KZ4GY

EM86tk

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

1st time, had a blast! Thank you for doing this, What a great learning experience.

N0PFE

EM00ul

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

This one caught me off guard and I was busy working another critical project at the same time so I was a bit distracted. Excuses, eh? I forgot to enable my 400hz filter consistently such that the offsets were the same on the band. Oh well, better luck in April '27.

N3CRT

FN20qv

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Great fun as usual. Thanks to my friend John KB2HSH for motivating me to participate. Thank you Michael and Connie!

N3RTW

FM18js

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Good fun as always. The digital guys broadcasting near the FMT signal reminded me what my filter knobs do.

N5KAE

EL29gb

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Hope I did it all correctly. There are plenty of things to get right, and just one mess-up....Hope I didn't miss any of them. But, as usual, , the FMT helps to exercise the old brain !!!

N7QXB

DN40cq

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Thanks to W8RKO and K5CM for hosting the FMT. Bad QRM on last frequency.

N8OBJ

EN91fh

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

I can consistently measure a frequency to +/- 0.001 Hz on this setup, but the Ionosphere modulates the freq changes by more than 2000X (yes - 2 Hz!) - so location and TID's (Traveling Ionic Disturbances) activity plays a big part in this measurement.
Plus 40M and 80M are completely different beasts...

N8OQ

FM07uv

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Standard deviations W8RKO 40m (0.194-Hz), K5CM 40m (0.120-Hz), W8RKO 80m (0.077-Hz) and K5CM 80m (0.225-Hz). A few K4 synthesizer state changes but none at critical moments. One year I'll remember to turn the external 10-MHz reference off! Not much evidence of Doppler in the unknowns nor in 5 MHz WWV. 15-MHz WWV in the late afternoon as it faded away didn't have much either.

N9DK

CM87wj

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

I was in CW mode on 40m. Fortunately I realized my frequencies were off by a lot - exactly the 450 Hz CW tone I have configured on the rig. I hadn't saved my GPSDO compensation formula previously but now I have, so that gets fixed automatically. Tons of fun!

VA3MW

FN04hu

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

FMTAssistant is at https://va3mw.github.io/FMTAssistant/. This is the first time I tried this, so who knows if it actually worked! :) Once the results are published, the user can feed in the published results for a closing summary in the "How closer were you" form. It was a fun project and with Claude Code, I was able to add features and fix issues almost on the fly. All the recorded values are saved and nothing is deleted. All the math is handled. And, it has audio prompts to wake you up if you snooze off! After the results are published, it will build a prompt for you to drop in your favourite AI to tell you what you might have done wrong. Thanks W8RKO and K5CM for setting this up. Oh, I forgot there are practice sessions, so I will add that to the tool.

VE2IQ

FN15nt

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

I may be getting too old for this. Everything is automated, but I have to remember how to use the software! Thanks to everyone, and nice to see so many first-timers.

VE3GSO

EN92ix

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Great signals on the first three runs, with digital interference seemingly on purpose, but didn't matter. On forth run someone zero beated the signal and then wandered off a bit before coming back in. Made a right mess of the spectrum display throughout the run.

VE3IGJ

FN25gl

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

(none)

VE3OAT

FN25eg

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Signals on 80 m were not as strong as on 40, but there was little interference to cause any problems. All mistakes are my own.

VE3ZRK

FN25di

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

- First transmission on 40m was very noisy,
- We could barely copy the second 40m transmission.
- Both 80m transmissions were S9.

Many thanks to David Green VE3TLY for his help

And many thanks to the crew who put this event together

VE6GRT

DO22qd

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Difficult signals this time (S3) here in Alberta. The 80 meter signals had the additional challenge of SSB and digital Tx QRM. Thanks Again for a great exercise!

W1HB

FM18ku

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Thanks for the FMT

W2FD

EN91wx

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Conditions very noisy and not very stable. Test signals were strong and variable with fading. Thanks to Mike and Connie for another good job.

W2TX

EM74sa

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

I just moved so the antenna was a 28 ft wire laying on the deck. 40M was ok but 80M was very weak! I had just 3 periods of 2-3 seconds in which I could actually hear K5CM on 80.

W3FAY

FM18ox

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

I didn't set up in advance for this FMT, so it'll be interesting to see how this method turns out. Good signals overall. Thanks for providing this event.

W3JW

FM17tq

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Sig strengths--W8rko/40 S9 +10db; K5cm/40 S9 +5db; W8rko/80 S9 +10db; K5cm/80 S9 +5db Doppler shift and multipath were less than is typical. Band noise was relatively low. Many tnx to Connie, Mike and all who make the FMT's possible

W5LAC

EM51hh

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Good signals all around, although I was having some issues with my hardware and could be way off! Thanks to K5CM and W8RKO for their time and energy!

W6BM

CM87uv

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

S3 signal levels, little doppler on 40, more on 80. Thanks, guys

W6DSR

CM88iw

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

No digital interference on this run. All signals were S9 + 9-10 dB. Had some deep fades. Atmospheric noise was around S7.

W7KVI

DN17ht

	80m	40m
W8RKO
K5CM
W8RKO
K5CM	Y

I didn't hear W8RKO, or wasn't looking for the magnitude of frequency offset actually used. FT-991A CAT control doesn't have sufficient resolution to take advantage of WSJT-X' calibration results, thus in addition to iono velocity, a small unknown in the WSJT-X measurements was the offset due to lack of 991 dial calibration. This was measured several times over a period of at least 15 minutes, with small variation of several hundred millihertz - this may be the uncertainty in my GPS-disciplined oscillator's output (i.e., PLL tracking errors) - TBC.

W7WHG

DN40bq

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

First time FMT participant.

W8EDU

EN91fl

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Great fun as always. Thank you, W8RKO and K5CM plus ARRL for running this. ARRL, get it on the contest calendar!

W8TM

EM79te

	80m	40m
W8RKO
K5CM		Y
W8RKO	Y
K5CM	Y

Absolutely nothing heard from W8RKO on 40M. K3 CWT detected something at 7063868, but I couldn't hear it.

W9GR

CM99mg

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Good strong signals from both W8RKO and K5CM here in northern California, with the usual QSB. Some weak digital QRM on 80 meters.

W9INE

DN70gi

	80m	40m
W8RKO
K5CM
W8RKO	Y
K5CM	Y

**15-MIN BEFORE. Normal noise -150dBm.Tonight -102dBm.Rig is remote in detached garage. Change switching PS to analog. No dice.
**KEYDOWN #1. No trace in waterfall.Change 8600 to 6700.
**KEYDOWN #2. Missed this one. Didn't get all cables changed and IP address change.
**KEYDOWN #3. Can now see normal S/N but no FLDIGI. Recorded dial reading.
**KEYDOWN #4. Still no FLDIGI. IP address wrong. Recorded dial reading.
**BUSY & DISAPPOINTED!

W9WLX

EN52xx

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Largest SD (0.352 Hz) on W8RKO 40m possibly due to weaker signal/QSB. S/N was 30-40 dB for most measurements. Other runs: all measurements S/N >40dB with SDs 0.027, 0.053, and 0.178 Hz.

WA1SXK

EM95lf

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

No QRM on signals but had some fading on K5CM signals on both 40m and 80m. The K5CM 80m signal completely faded out at some points during FMT key down. Static crashes were heard on FMT signals here on the E. Coast. I always look forward to the FMT testing to dust off my FMT equipment and refresh my procedures for FMT. Salute to one of the great hams, Mike Black W9MDB S/K. Thank you, Mike, for your FMT training and I miss the ham radio fun we had together. dit dit (EE)
Thank you, both "Connie and Mike" for performing the ARRL FMT testing for us the " FMT Nuts ".
Best of 73 to all Eric/wa1sxk

WA4EFS

EM94ic

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

In April 2026 I used homebrew hardware and software to estimate test frequencies to the nearest whole Hz. A month or two later, Eric WA1SXK explained to me how to use fldigi with a reference GPSDO for more precise measurement.

I have also attempted to incorporate a Doppler correction in the current submission, but am less confident about that part.

WB4DFW

EM84nr

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Running the calibration run on the Kenwood over several hours may have given me a bit more accuracy than years past.

Always a blast, but I'd like to know which participant this year felt it necessary to TRANSMIT sliding across the test frequency for the first 5-10 seconds on the last three runs! Fortunately W8RKO and K5CM were strong enough here to get a good reading in spite of that QRM.

WB7BDI

CM87xj

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO
K5CM

First time doing this. Lots to learn, but the biggest thing was to not make adjustments during the test! I had a conflicting meeting during the 80m test, so have entered fake data for those. Looking forward to the results!

WB7CAK

CN84ju

	80m	40m
W8RKO		Y
K5CM
W8RKO	Y
K5CM	Y

Missed K5CM 40m run due to TS-430 RIT switch accidently pressed, invalidating measurement.

Severe digital QRM on K5CM 80m run...

WO7V

CN92eg

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

Both signals on both bands were S9. However, there was significant interference from a wideband digital transmission source for both FMT signals on 80m. The same thing happened during the FMT last April. I would suggest that in the future the FMT on 80m is moved down to just below the FT8 portion of the band. Or, better yet, move them to just above the Extra Class wasteland just above 3600kHz.

WQ8T

EN74hf

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

The 40M signals were very weak at my location, the 80M signals were strong.
Thanks W8RKO and K5CM

WS5W

EM13qi

	80m	40m
W8RKO		Y
K5CM		Y
W8RKO	Y
K5CM	Y

first timer here

Frequency Measuring Tests

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