ARRL Current FMT Results

Results - November 7, 2025 FMT

Actual Radio Frequencies (Hz):
	80m	40m
W8RKO		7,064,019.10
K5CM		7,065,513.46
W8RKO	3,597,877.70
K5CM	3,599,487.93

W8RKO,K5CM,W8RKO,K5CM All (<=1.0 Hz):
AA3I, AA4MY, AA6LK, AF9A, K5CM, K5ND, K6LL, K7NG, K9JM, KA8BRK, KB3HF, KB4XR, KD5MMM, KD8RV, N0PFE, N5TNL, N7QXB, N7WS, N8OF, W2FD, W6BM, W6DSR, W7SUA, W9GR, W9INE, WA1SXK, WA5UCW, WA7BNM, WO7V, WQ8T

W8RKO 80 (<=1.0 Hz):
AA3I, AA4MY, AA6LK, AC9LV, AD7G, AF9A, DJ3EI, K0MZ, K0WM, K4CXX, K5CM, K5ND, K6LL, K7NG, K8GNG, K9JM, KA8BRK, KB3HF, KB4XR, KC3VNB, KD2BD, KD5HIP, KD5MMM, KD8RV, KE2N, KE6ZLX, KF4FC, KF7NP, KI4WKZ, KN1H, N0PFE, N3CRT, N3RF, N5TNL, N7QXB, N7WS, N8OF, NF7R, RU0LL, VE2IQ, VE3GQW, VE3PIK, VE3YX, VE3ZRK, VE6GRT, W1HB, W2FD, W2TX, W3FAY, W3JW, W4VU, W5LAC, W6BM, W6DSR, W6OQI, W7SUA, W8DPK, W8TM, W9GR, W9INE, WA1SXK, WA4BQM, WA4FJC, WA5UCW, WA7BNM, WB2CMF, WO7V, WQ8T, WS3W

W8RKO 80 (>1 to <=5 Hz):
AJ4YA, KB2HSH, KD7KDO, KE8DO, N1IRO, VE3GSO, W2KI, WB4DFW

W8RKO 80 (>5 to <=10 Hz):
AF1R, K1MU, K8YUM, N3RTW

W8RKO 40 (<=1.0 Hz):
AA3I, AA4MY, AA5DF, AA6LK, AF1R, AF9A, AJ4YA, DJ3EI, K0MZ, K0WM, K1MU, K5CM, K5ND, K6LL, K7NG, K8GNG, K9JM, KA8BRK, KB3HF, KB4XR, KC3VNB, KD2BD, KD5MMM, KD7KDO, KD8RV, KE2N, KE8DO, KF4FC, KF7NP, KI4WKZ, KN1H, N0PFE, N3CRT, N5TNL, N7QXB, N7WS, N8OF, N8OQ, NF7R, VE6GRT, W1HB, W2FD, W2KI, W2TX, W3JW, W5LAC, W5SSV, W6BM, W6DSR, W7SUA, W9GR, W9INE, WA1SXK, WA4BQM, WA4FJC, WA5UCW, WA7BNM, WB2CMF, WO7V, WQ8T

W8RKO 40 (>1 to <=5 Hz):
AD7G, K7MWD, K8YUM, KB2HSH, KD5HIP, KE6ZLX, N3RTW, VE2IQ, VE3GQW, VE3GSO, VE3PIK, VE3YX, VE3ZRK, W3FAY, W6OQI, W8DPK, WB4DFW, WS3W

W8RKO 40 (>5 to <=10 Hz):
W8TM

K5CM 80 (<=1.0 Hz):
AA3I, AA4MY, AA5DF, AA6LK, AD7G, AF9A, DJ3EI, K0WM, K5CM, K5ND, K6LL, K7NG, K8YUM, K9JM, KA8BRK, KB2HSH, KB3HF, KB4XR, KD5HIP, KD5MMM, KD7KDO, KD8RV, KE2N, KE6ZLX, KE8DO, KI4WKZ, KN1H, N0PFE, N3CRT, N3RF, N5TNL, N7QXB, N7WS, N8OF, N8OQ, RU0LL, VE3GQW, VE3GSO, VE3PIK, VE3ZRK, W1HB, W2FD, W2KI, W2TX, W3FAY, W3JW, W6BM, W6DSR, W6OQI, W7SUA, W8DPK, W8TM, W9GR, W9INE, WA1SXK, WA4BQM, WA4FJC, WA5UCW, WA7BNM, WB4DFW, WO7V, WQ8T, WS3W

K5CM 80 (>1 to <=5 Hz):
AC9LV, AF1R, AJ4YA, K0MZ, K4CXX, K7MWD, K8GNG, KC3VNB, KD2BD, N1IRO, NF7R, VE3YX, VE6GRT, W5LAC, W7KBW, WB2CMF

K5CM 80 (>5 to <=10 Hz):
K1MU, K6AVP, N3RTW

K5CM 40 (<=1.0 Hz):
AA3I, AA4MY, AA6LK, AD7G, AF1R, AF9A, K0MZ, K4CXX, K5CM, K5ND, K6LL, K7NG, K8YUM, K9JM, KA8BRK, KB2HSH, KB3HF, KB4XR, KD5HIP, KD5MMM, KD7KDO, KD8RV, KE6ZLX, N0PFE, N5TNL, N7QXB, N7WS, N8OF, N8OQ, NF7R, VE2IQ, VE3GQW, VE3GSO, VE3YX, VE3ZRK, VE6GRT, W2FD, W2KI, W4VU, W5LAC, W6BM, W6DSR, W6OQI, W7SUA, W8DPK, W8TM, W9GR, W9INE, WA1SXK, WA5UCW, WA7BNM, WB2CMF, WB4DFW, WO7V, WQ8T

K5CM 40 (>1 to <=5 Hz):
AC9LV, AJ4YA, DJ3EI, K1MU, K7MWD, K8GNG, KC3VNB, KD2BD, KE2N, KE8DO, KI4WKZ, KN1H, N3CRT, N3RF, VE3PIK, W1HB, W3FAY, W3JW, WA4BQM, WS3W

K5CM 40 (>5 to <=10 Hz):
K6AVP, N3RTW

W8RKO 80 (>1 to <=5 Hz):
AJ4YA, KB2HSH, KD7KDO, KE8DO, N1IRO, VE3GSO, W2KI, WB4DFW

W8RKO 80 (>5 to <=10 Hz):
AF1R, K1MU, K8YUM, N3RTW

W8RKO 40 (>1 to <=5 Hz):
AD7G, K7MWD, K8YUM, KB2HSH, KD5HIP, KE6ZLX, N3RTW, VE2IQ, VE3GQW, VE3GSO, VE3PIK, VE3YX, VE3ZRK, W3FAY, W6OQI, W8DPK, WB4DFW, WS3W

W8RKO 40 (>5 to <=10 Hz):
W8TM

K5CM 80 (>1 to <=5 Hz):
AC9LV, AF1R, AJ4YA, K0MZ, K4CXX, K7MWD, K8GNG, KC3VNB, KD2BD, N1IRO, NF7R, VE3YX, VE6GRT, W5LAC, W7KBW, WB2CMF

K5CM 80 (>5 to <=10 Hz):
K1MU, K6AVP, N3RTW

K5CM 40 (>1 to <=5 Hz):
AC9LV, AJ4YA, DJ3EI, K1MU, K7MWD, K8GNG, KC3VNB, KD2BD, KE2N, KE8DO, KI4WKZ, KN1H, N3CRT, N3RF, VE3PIK, W1HB, W3FAY, W3JW, WA4BQM, WS3W

K5CM 40 (>5 to <=10 Hz):
K6AVP, N3RTW

Entries (n=90):

Call Sign

QTH

Area

Grid

Method/Soapbox

AA3I

FN20if

	80m	40m
W8RKO		7,064,018.72 -0.38
K5CM		7,065,513.60 0.14
W8RKO	3,597,877.60 -0.10
K5CM	3,599,488.09 0.16

Method: TS590S xcvr with short vert dipole and Bodnar LBE-1420 GPS locked source for cal. Use WJST-X in cal mode to measure and copy data to an excel spreadsheet for averaging and correction.

Soapbox: Always enjoy the challenge. Thanks W8RKO and K5CM. Noisy signals plus QSB were a measurement challenge.

AA4MY

EM95lr

	80m	40m
W8RKO		7,064,018.99 -0.11
K5CM		7,065,513.72 0.26
W8RKO	3,597,877.59 -0.11
K5CM	3,599,488.48 0.55

Method: Icom 7851 + Symmetricom XLi (Rubidium+ELPN+GPS) + FocusRite Scarlett 18i18 (optical SPDIF audio, externally clocked from rig).

Homebrew quadrature interpolation + phase slope estimation tooling written in Python, all measurements performed live.

Soapbox: All signals were strong from North Carolina (S9+10 this year!). 35 foot vertical with 24 radials and a 9:1 unun. There was an active and strong Central American SSB QSO on top of W8RKO's first TX. Thanks for putting everything together, gentlemen.

AA5DF

EM10bf

	80m	40m
W8RKO		7,064,019.22 0.12
K5CM		7,065,013.86 -499.60
W8RKO	3,597,996.21 118.51
K5CM	3,599,488.31 0.38

Method: Flex 6400 with WSJT-x Frequency Calibration mode, cross checked with Python PSD calculation of audio wave file

Soapbox: First attempt at FMT. Thanks to K7MWD for suggesting!

AA6LK

CM98kw

	80m	40m
W8RKO		7,064,018.90 -0.20
K5CM		7,065,513.50 0.04
W8RKO	3,597,877.50 -0.20
K5CM	3,599,488.50 0.57

Method: HP Z3805A 10MHz GPSDO, Marconi 2019 HF synth, HP 3325A LF synth, HP 54601A o'scope, FT-847 in AM/narrow mode, 40m & 80m dipoles, Win10 laptop running SpecLab, Digipan for spotting, EZGPIB driving USBserial and Prologix USB-GPIB to control and interrogate the instruments and radio, GPSCon for monitoring Z3805A; the 2019 was set to inject a reference beat signal to produce a ~400Hz beat tone, and the 3325A was manually tuned for minimum phase slip between it and the beat tone as seen on o'scope. Each run was also recorded to a .wav file through SpecLab, though this time I just used the display as a sanity check.

Soapbox: Thanks Mike and Connie for running the event. Signals were weak and highly variable, will be lucky to get within 0.5 Hz on anything.
73, L-

AC9LV

EN52kh

	80m	40m
W8RKO		7,064,033.00 13.90
K5CM		7,065,515.00 1.54
W8RKO	3,597,878.00 0.30
K5CM	3,599,489.00 1.07

Method: Front end tap off FTDX101MP, fed to SDR Play. SDR Play was toggling between .1 to .4 Hz when calibrating with WWV. ( Doppler? ) Bodnar GPSDO reference .
135' End fed 1/2 wave.

Soapbox: 40 was VERY weak from W8RKO, probably botched that one. Other signals were fair to good. Many thanks to Mike and Connie.

AD7G

DM13bu

	80m	40m
W8RKO		7,064,022.87 3.77
K5CM		7,065,513.89 0.43
W8RKO	3,597,877.84 0.14
K5CM	3,599,488.04 0.11

Method: Method: Used FTDX3000, GPSDO, and a Freq. Counter

Soapbox: Tried a different procedure but still need to be careful with the data.
Thanks to Connie and Mike and the FMT team for putting on this event.

AF1R

FN42jh

	80m	40m
W8RKO		7,064,018.30 -0.80
K5CM		7,065,514.30 0.84
W8RKO	3,597,872.50 -5.20
K5CM	3,599,489.30 1.37

Method: Used FLDIGI frequency measurement mode.
Looked at the carrier of CHU 3.330 MHz and WWV 5.000 MHz to get a calibration factor for my radio and laptop.
During each measurement period observed the measured frequency and made a "guessestimate" of the median frequency. The CHU/WWV correction factor was applied to the this number.

Soapbox: I checked CHU and WWV just before and after each measurement. For the first two runs I had no correction factor as I measured both on frequency. For the third and fourth runs, my measurement of CHU/WWV were low by 0.5 Hz, so I applied this factor to their measurements.

My technique is to visually observe the frequency during the run and make a guess at the median value. The 1st, 2nd and 4th runs behaved normally with the frequency bouncing a up and down around a median value. But, during the third run, W8RKO on 80 M, the signal jumped up by 3 Hz 30 seconds into the run and remained 2 Hz higher than the start at the end of the run. I had to make a guess at whether the correct frequency was at the beginning, middle or end.

AF9A

EM69wv

	80m	40m
W8RKO		7,064,018.57 -0.53
K5CM		7,065,513.82 0.36
W8RKO	3,597,877.25 -0.45
K5CM	3,599,488.06 0.13

Method: Freq standard: TCXO calibrated with WWV, CHU. Measurement with WSJT-X.

Soapbox: Good signals as usual here in Indiana. Thanks!

AJ4YA

FM05st

	80m	40m
W8RKO		7,064,019.50 0.40
K5CM		7,065,515.32 1.86
W8RKO	3,597,879.10 1.40
K5CM	3,599,489.34 1.41

Method: Elecraft K3S, Fan Dipole. Using SPOT feature, and listening for the "beat"

Soapbox: Signals were very strong. Had to Attn a bit. 80m signal from K5CM had some interference.

DJ3EI

JO62sk

	80m	40m
W8RKO		7,064,019.50 0.40
K5CM		7,065,518.30 4.84
W8RKO	3,597,877.55 -0.15
K5CM	3,599,488.90 0.97

Method: Makeshift centerfed inverted-U antenna, horizontal parts into a street tree and along the house 2 x 5-6 m, at right angle to each other, then about 8 m dangling down. Z-Match tuner. QTH Berlin, Germany.

IC-705 freshly calibrated with freqcal from WSJT-X: Shack temperature approximately constant to 1 or 2°C during and since calibration.

USB, freq set to 7063.3, 7064.3, 3597.3, and 3598.3 kHz resp.. Used build-in functionality of IC-705 to generate .wav files around the time the signal was to be expected. Copied those .wav files to my PC.

Crafted a Jupyter notebook to analyze, main ingredient scipy.signal.ShortTimeFFT. I use Welch windows (for no particular reason).

First 1 s wide with 50% overlap. Visualize result with waterfall-like display, using matplotlib.pyplot.axes.pcolormesh, to find signals. This is the hardest part. When several signals are found, choose the one which corresponds well with the advertised start and end times.

Use only the frames from the original .wav file that corresponds to the time when the signal was found for a second round of ShortTimeFFT, this time with a five seconds Welch window with 50% overlap for increased frequency resolution.

Do a straight periodogram (= average amplitudes of a given frequency across the time bins). Look at the most relevant 10 or 20 Hz worth of frequency bins (using Pandas' DataFrame.plot and list) and try to locate a peak.

Soapbox: With K=5 and the Juliusruh MUF(3000km) estimate down to 5.8 MHz, conditions were lousy. Indeed, I heard nothing and saw nothing on my rig's waterfall display.

I already thought I had set my alarm clock to 3 am in the morning in vain, that is, to learn nothing more than that it wasn't going to work in such conditions.

But I had planned to do audio recordings anyway, so I did that.

After getting some more sleep, I speculated: A full minute of constant carrier is a heck of a signal. I might be able to find it, sifting through the noise.

I can't recall having done FFT spectrum analysis for real before, but I command a decent math+programming background, so I decided to give it a try. I found all the hard problems already solved in "usual suspects" open source software, so my background was only needed for choosing tools; it took not long to whip something pertinent up. And it indeed found the signals! That was a joy pure and absolutely made my day!

Now I'm curious how well this setup did. Main known problems: Is the WSJT-X freqcal calibration of my rig good enough? And sometimes, several weak signal traces crowd a frequency neighborhood - did I always pick the right one?

K0MZ

DM03ts

	80m	40m
W8RKO		7,064,019.00 -0.10
K5CM		7,065,513.00 -0.46
W8RKO	3,597,878.00 0.30
K5CM	3,599,489.00 1.07

Method: Local oscillator tuned to zero beat of signal, counted with a Heath IM-4100 counter, clocked with an HP 10544A OCXO calibrated with WWV at noon. TR-7 receiver with trap vertical with radials and tuned to CW pitch matched by ear.

Soapbox: All signals were similar in strength at 10 dB over S-9 +/-. Slight doppler on K5CM 40 meters and some doppler on K5CM 80 meters sounding a little different than the 40 meter signal. Thank you Mike and Connie for providing us with a fun evening of radio magic. Radio has always been magic for me since the 1950’s.

K0WM

DM79jt

	80m	40m
W8RKO		7,064,018.58 -0.52
K5CM		7,065,261.10 -252.36
W8RKO	3,597,877.30 -0.40
K5CM	3,599,488.22 0.29

Method: Rig is a Yaesu FT-1000MP, Rockwell/Collins 180S-1 tuner, 40-meter dipole and a Fluke 8845A. Calibrate the receiver with a Bodnar GPSDO. I have used my homebrew Excel spreadsheet to analyze several FMTs, with varying degrees of success. :-)

Soapbox: Thanks to Connie and Mike for continuing support for this interesting event. The FMT makes radio interesting.

K1MU

FM18ju

	80m	40m
W8RKO		7,064,018.61 -0.49
K5CM		7,065,508.64 -4.83
W8RKO	3,597,869.27 -8.43
K5CM	3,599,479.87 -8.06

Method: IC-7610, Bodnar Mini-GPS reference, FLdigi.

Soapbox: Thanks to Connie and Mike for another try at this, much appreciated.
I'm really tempted to not submit as I had really wide frequency excursions throughout most of the runs. (K5CM 10 Hz swing.) I'm not sure why, but submitting anyway in hopes I got somewhat close. See you next time!

K4CXX

EL98qd

	80m	40m
W8RKO		7,063,858.26 -160.84
K5CM		7,065,513.11 -0.35
W8RKO	3,597,878.37 0.67
K5CM	3,599,489.26 1.33

Method: Measured each signal with XCVR in USB for audio frequency and period tuned from 300 to 600 Hz below signal. Afterwards, used a similar strategy to derive XCVR oscillator error from CHU-3330, WWV-5, WWV-10, and local AM BC station with GPS referenced carrier frequency.

Soapbox: All signals were very usable, with 40 m signals over S9, and 80 m signals in the mid S-meter range. As usual, a note of thanks to K5CM and W8RKO for flawlessly giving us a good challenge.

K5CM

EM25ir

	80m	40m
W8RKO		7,064,019.10 0.00
K5CM		7,065,513.46 0.00
W8RKO	3,597,877.70 0.00
K5CM	3,599,487.93 0.00

Method: TX: HP Z3801 GPS frequency standard, HP-3336b. A 10 db transistor amp follows and drives a 12by7 / pair 6146. Then to the final amplifier (8877) running 800 watts out. There are no mixers or any device in the chain of amplifiers that might impact the accuracy of the GPS requency source.
RX: K3 in AM mode with low side injection from a GPS locked HP-3336B. Audio is feed to Spectrum lab.
As a reality check I also read the frequency with just the K3 in CW mode

Soapbox: The K index was at a 5 and the solar wind was high but signal strength of Mike's signal was good.

K5ND

EM12kv

	80m	40m
W8RKO		7,064,019.40 0.30
K5CM		7,065,514.43 0.97
W8RKO	3,597,877.87 0.17
K5CM	3,599,488.60 0.67

Method: IC-746PRO with CR-388 high stability oscillator. Cushcraft MA6V vertical antenna. Warmed up for two days. WSJT-X frequency calibrated one hour before the test. Measured with WSJT-X.

Soapbox: Ran into challenge on K5CM 7064 transmission. CW QSO underway on frequency. Saw the move up by K5CM but had a devil of a time to figure out how best to adjust WSJT. Got that accomplished in time to measure 24 seconds of key down transmission. Always learning something new!

K6AVP

CM95nh

	80m	40m
W8RKO
K5CM		7,065,505.58 -7.88
W8RKO	3,598,496.09 618.39
K5CM	3,599,495.94 8.01

Method: ANAN-100B/Thetis with GPSDO, using WSJTx for frequency measurements

Soapbox: W8RKO 40m signal unheard and unseen at QTH on CA Central Coast. W8RKO 80m signal about 6db lower than K5CM 80m signal.

K6LL

DM22qq

	80m	40m
W8RKO		7,064,018.19 -0.91
K5CM		7,065,513.35 -0.11
W8RKO	3,597,877.50 -0.20
K5CM	3,599,488.43 0.50

Method: Uncalibrated AM receiver, with Bodnar GPSDO used as BFO. Spectrum Labs peak detector to record peak CW tone once per second. Spreadsheet for average CW tone. Test freq = GPSDO freq + average CW tone.

Soapbox: All four test signals were strong. There was a little QRM from Spanish SSB on 40. but the test signal was much louder.

K7MWD

DM44if

	80m	40m
W8RKO		7,064,022.73 3.63
K5CM		7,065,517.99 4.53
W8RKO	3,597,991.07 113.37
K5CM	3,599,490.83 2.90

Method: RSPDx and WSJT

Soapbox: First time participant and thanks to AA5DF for the reminder! Looking forward to the next one.

K7NG

CN73ui

	80m	40m
W8RKO		7,064,019.19 0.09
K5CM		7,065,513.33 -0.13
W8RKO	3,597,877.72 0.02
K5CM	3,599,488.51 0.58

Method: IC-7610 w/external reference, 43' vertical, FLDIGI 'Frequency Analysis'.
Feeble attempts at ionospheric correction.

Soapbox: Pretty good signals on both bands from both K5CM and W8RKO.
This might have been the first FMT I've participated in where something, somewhere, somehow, didn't go badly wrong. Crossed fingers as regards my reported results, however.

K8GNG

EN82cm

	80m	40m
W8RKO		7,064,020.00 0.90
K5CM		7,065,515.00 1.54
W8RKO	3,597,877.00 -0.70
K5CM	3,599,489.00 1.07

Method: Yaesu FTdx10 transceiver, fldigi in FMT mode. Estimating doppler shift by monitoring time stations reasonably near the TX frequencies.

Soapbox: First time attempting this activity. Enjoyed it!

K8YUM

EM00kb

	80m	40m
W8RKO		7,064,016.90 -2.20
K5CM		7,065,513.20 -0.26
W8RKO	3,597,871.60 -6.10
K5CM	3,599,487.90 -0.03

Method: Record I & Q signal components shifted to near zero, then plot phase versus time and draw best fit line to such blocks of plot that seem to represent a common frequency. Rough propagation conditions made this very problematical this trip.

Soapbox: Wow! What rough propagation. Mr. Sun must be mad at us again.

K9JM

CM99lc

	80m	40m
W8RKO		7,064,018.98 -0.12
K5CM		7,065,513.92 0.46
W8RKO	3,597,877.64 -0.06
K5CM	3,599,488.02 0.09

Method: Calibrated K3S + tuning forks + a wing and a prayer

Soapbox: RKO 40M QSB in the middle of SSB. CM 40 good signal with a POTA station down. RKO 80M 20dB S/N + QSB + multi frequency digital signal on frequency. CM 80M Good signal fast QSB!

KA8BRK

EN81fc

	80m	40m
W8RKO		7,064,018.40 -0.70
K5CM		7,065,513.94 0.48
W8RKO	3,597,877.32 -0.38
K5CM	3,599,488.21 0.28

Method: IC-706MKII, 80 Meter Dipole, Bodnar Mini, FLDigi, Libre Office

Soapbox: W8RKO 40 meter very weak here, others ok, not great.

KB2HSH

FN03na

	80m	40m
W8RKO		7,064,016.13 -2.97
K5CM		7,065,513.61 0.15
W8RKO	3,597,876.49 -1.21
K5CM	3,599,487.71 -0.22

Method: Receiver: Xiegu G90. Antenna: AN-131-A manpack antenna
Software: fldigi. Calibration: WWV/10 and CHU/3330. Calculations by Claude AI.

Soapbox: With poor conditions on HF last night, I wasn't expecting much. On 40, W8RKO was barely perceptible, but a reasonable measurement was made. K5CM was quite a lot stronger. 80 was excellent for both stations.

It's been a while since I was on the air, so, I almost didn't get fldigi set up in time, but I made it with time to spare. Also glad that my friend, Chuck N3CRT, was able to participate again this year. It wouldn't be FMT without him.

73 and Happy Holidays!!!!

John KB2HSH

KB3HF

EM48qs

	80m	40m
W8RKO		7,064,019.33 0.23
K5CM		7,065,513.93 0.47
W8RKO	3,597,877.22 -0.48
K5CM	3,599,488.01 0.08

Method: TS-890 XCVR, Gap Titan Ant, 80/40 Dipole Ant, SignaLink, FMT Software

Soapbox: Good signals in MO. Thanks to W8RKO & K5CM for the fun.

KB4XR

FM18hw

	80m	40m
W8RKO		7,064,018.39 -0.71
K5CM		7,065,513.95 0.49
W8RKO	3,597,877.72 0.02
K5CM	3,599,488.04 0.11

Method: Yaesu FT-710, FLDIGI FMT, Bodnar GPSDO for ref, spectral analysis of audio recording using Matlab tools. Attic G5RV.

Soapbox: Well, that was FUN! Doppler was all over the place on 40m. With these conditions, should have set up an SDR to simultaneously track WWV. I enjoy the comments.

Sincere thanks to the masters at W8RKO and K5CM. Most challenging. Glad it wasn’t on 20 meters!

KC3VNB

FN00dl

	80m	40m
W8RKO		7,064,019.29 0.19
K5CM		7,065,514.88 1.42
W8RKO	3,597,877.77 0.07
K5CM	3,599,489.45 1.52

Method: ICOM 7300 and a GPS referenced signal generator. Set sig gen approx 500 to 1000 Hz below signal - set rig for AM and measured beat difference in Spectrumlab. Leaned toward upper edge of peak signal to account for evening Doppler.

Soapbox: Plenty of QRM and signal spreading. Challenging conditions, but hey, that's the fun right?! Thanks to Michael and Connie as always - 73.

KD2BD

FN20xd

	80m	40m
W8RKO		7,064,018.80 -0.30
K5CM		7,065,514.55 1.09
W8RKO	3,597,877.70 0.00
K5CM	3,599,489.24 1.31

Method: All homebrew equipment including a carrier phase tracking receiver, a WWVB referenced frequency standard, an electrically small vertically polarized loop antenna, and a frequency counter. Method involved phase locking the receiver's DDS LO to the frequency of the unknown carrier minus a 1 kHz offset, measuring the frequency of the receiver's LO over several 10 second integration periods and taking a selective average of the readings after factoring in the 1 kHz offset. More info at: https://www.qsl.net/kd2bd/fmt-methodology.html

Soapbox: A roller coaster FMT. All signals were 599, but with the Kp-index between 5 and 6, all but W8RKO's 40 meter transmissions were severely distorted by high levels of phase modulation. Signals on 80 deviated by 0.9 Hz or more during each keydown period. Even normally rock-solid WWVB at 60 kHz became erratic shortly before 0300 UTC.

KD5HIP

EM36bd

	80m	40m
W8RKO		7,064,018.00 -1.10
K5CM		7,065,513.00 -0.46
W8RKO	3,597,877.00 -0.70
K5CM	3,599,488.00 0.07

Method: ICOM IC-7760 fed by Butternut HF9V vertical. Audio output to HP Pavilion PC running MixW version 3.2.105 to monitor the frequency.

Soapbox: The K5CM signal on 40M was weak and I didnot hear the callup.

KD5MMM

EL19ds

	80m	40m
W8RKO		7,064,018.70 -0.40
K5CM		7,065,513.70 0.24
W8RKO	3,597,878.20 0.50
K5CM	3,599,488.90 0.97

Method: FT817, SpecLab, Speadsheet, CHU for reference.

Soapbox: K5CM was weak on 40m but was very strong on 80m.
Hope I'm close!
73 all ..

KD7KDO

DM33xm

	80m	40m
W8RKO		7,064,018.79 -0.31
K5CM		7,065,514.11 0.65
W8RKO	3,597,879.04 1.34
K5CM	3,599,488.40 0.47

Method: FLDIGI/IC7300/RIGOL DG1022/GPS Controlled Reference Generator

Soapbox: I copied a POTA station KB5YZY as well on 40 meters.
Tnks for moving up 500 Hz.

KD8RV

EN82mj

	80m	40m
W8RKO		7,064,018.40 -0.70
K5CM		7,065,514.00 0.54
W8RKO	3,597,877.00 -0.70
K5CM	3,599,487.90 -0.03

Method: Listen for call up on K3, do a rough spot. Use synchronous amplitude modulation mode offset on a GPSDO'd SDRPlay RSPdx to attempt to hone in the tenth Hertz value. Antenna is a Wellbrook 1 meter amplified loop 2 meters AGL.

Soapbox: Oh my! The flutter sounded like an operatic vibrato. The frequency spreading especially 40 meters here in Michigan was problematic for me. CHU and WWV at this location did not add much clarity as to the correction for doppler offset. Some past tests were rough, but this time took the cake
Thank you W8RKO and K5CM for the challenge! 73

KE2N

FM18ew

	80m	40m
W8RKO		7,064,018.80 -0.30
K5CM		7,065,514.70 1.24
W8RKO	3,597,877.80 0.10
K5CM	3,599,487.90 -0.03

Method: ICOM 7610 sync'd to GPS, 60 sec average of FFT using Spectrum Lab

Soapbox: (none)

KE6ZLX

DM13ie

	80m	40m
W8RKO		7,064,017.80 -1.30
K5CM		7,065,512.86 -0.60
W8RKO	3,597,877.60 -0.10
K5CM	3,599,488.19 0.26

Method: SDR receiver based on the MSI 001 and MSI 2500 chip set running SDRuno. Distill am bandstop filter. Mega loop ant MLA-30. U-BLOX LEA-M8T-0-10 Huawei GPS module controlled by Ublox U-Center in fixed mode providing reference freqs. (UNK freq - REF freq) + REF freq. Signals analyzed with Spectrum Lab. Results plotted and outliers removed. Mean of remaining measurements reported after applying fudge factors.

Soapbox: Signals were received well in San Diego. This was my second time using Spectrum Lab for the FMT, and I need more practice with the program. The high variability observed in both 40-meter test signals reduces my confidence in the reported results. This event was enjoyable as always! Thanks to K5CM and W8RKO.

KE8DO

EM68ug

	80m	40m
W8RKO		7,064,020.00 0.90
K5CM		7,065,515.50 2.04
W8RKO	3,597,874.00 -3.70
K5CM	3,599,487.00 -0.93

Method: Basic setup. Icom IC-7300, Apple ipad. No GPS frequency standard.
I plan to upgrade for next time.

Soapbox: 40M W8RKO QRM with SSB signal, but signal was OK with 50 HZ filter. K5CM +20 with no QRM.
80M W8RKO RTTY QRM just below, +20 signal with no problem using 50HZ filter. K5CM +20 with no QRM.

KF4FC

FM08md

	80m	40m
W8RKO		7,064,018.25 -0.85
K5CM		7,064,994.41 -519.05
W8RKO	3,597,877.67 -0.03
K5CM	3,598,976.32 -511.61

Method: Flex 6400, WSJT

Soapbox: Pretty bad QRM on two of the four measurements. Thanks for the fun!

KF7NP

DM33wp

	80m	40m
W8RKO		7,064,018.27 -0.83
K5CM
W8RKO	3,597,877.57 -0.13
K5CM

Method: I captured the transmissions using an RSP2 SDR and SDR Console software. I used a home brew GPSDO to drive the 24 Mhz clock input of the RSP2 SDR. I used a virtual audio cable to feed the audio to WSJT-X running in the frequency measurement mode. Using this method every
thing is derived from the GPSDO clock to eliminate sampling errors associated with the clock on a sound card. To verify the accuracy of the recordings I had a second GPSDO generate a signal a few Khz below the 40- and 80-meter frequencies.

Soapbox: There was just one problem. I had tickets in a suite to see the Phoenix Suns/ LA Clippers basketball game that night. I configured SDR console to record each of the transmissions starting 1 minute before and 4 minutes after the scheduled times. This left 4 minutes between each of
the recordings. Unfortunately, SDR Console defaults to giving you a popup warning 5 minutes before the recording starts. It appears if there is a recording being made when the popup occurs the associated recording is canceled. This resulted to the loss of the second and 4th transmissions.

KI4WKZ

FM07db

	80m	40m
W8RKO		7,064,018.50 -0.60
K5CM		7,065,515.85 2.39
W8RKO	3,597,877.87 0.17
K5CM	3,599,488.55 0.62

Method: ICOM-7000, Ant: EFHW8010, Fldigi ver: 4.2.09, (FMT) Rig blaster PNP for CAT control.

Soapbox: (none)

KN1H

FN33sg

	80m	40m
W8RKO		7,064,018.94 -0.17
K5CM		7,065,514.54 1.08
W8RKO	3,597,877.63 -0.07
K5CM	3,599,488.32 0.39

Method: IC-7200 receiver, audio sent to SpectrumLab. About 60 samples of each transmission averaged, band correction applied, hope for the best.

Soapbox: Something started up this afternoon causing strong harmonics of 60hz to appear in SpectrumLab. Changed my CW offset from 600hz to 500hz to avoid the collision, and hopefully adjusted all the calibrations and calculations appropriately. More and varied forms of QRM than usual in this FMT but both W8RKO and K5CM signals were terrific so there was no issue there. Thanks for making this an event to look forward to!

N0PFE

EM00ul

	80m	40m
W8RKO		7,064,018.50 -0.60
K5CM		7,065,513.50 0.04
W8RKO	3,597,877.50 -0.20
K5CM	3,599,488.50 0.57

Method: Equipment: Elecraft K3, AV640 used on 40 meters and end fed wire used on 80 meters. Zero beat WWV on 5MHz and examine Spectrum Lab frequency response. I let the radio sit for several hours to get it stable.

Soapbox: Conditions were pretty good for this event. There was some QRM on K5CM's frequency at first on 40m. I finally have an antenna for 80 meters so I was not deaf using the 40 meter vertical. I opted for the tried and true ear to zero beat method again. Worked well in the past as long as I enter the result correctly :-( The .5 Hz was my interpolation between the single Hz reading of the zero beat. Hopefully, I did ok; had some trouble getting my ref oscillator tuned with wwv as there was a lot of QSB.

These are always fun to do.

N1IRO

FN33qw

	80m	40m
W8RKO		7,063,999.70 -19.40
K5CM		7,066,535.00 1,021.54
W8RKO	3,597,873.00 -4.70
K5CM	3,599,484.20 -3.73

Method: Elecraft KX2 in USB mode, "Audio Frequency Counter" app on Android. Bodnar mini GPSDO for reference.

Soapbox: Not very hopeful, since frequency was anything but stable on the KX2. Being outdoors, the temperature was also very much in flux. Thanks for doing this...I wish it was every month instead of twice a year!

N3CRT

FN20qv

	80m	40m
W8RKO		7,064,018.49 -0.61
K5CM		7,065,514.63 1.17
W8RKO	3,597,877.55 -0.15
K5CM	3,599,488.47 0.54

Method: Flex 6400 FLDIGI Freq Analysis to CSV spreadsheets. Capture WWV 5/10/15 and take averages to determine dial error in Hz per MHz before during and after capturing unknowns. Measure unknowns and capture to CSV. Correct unknowns by removing dial error (Hz/MHz) averages.

Soapbox: Thank you for another great test. All signals were S9+10 into NNJ.

N3RF

FN00xs

	80m	40m
W8RKO
K5CM		7,065,514.83 1.37
W8RKO	3,597,877.71 0.01
K5CM	3,599,488.60 0.67

Method: Ten Tec Orion II + HP 8657B + Spectrum Lab

Soapbox: Missed W8RKO on 40m

N3RTW

FM18js

	80m	40m
W8RKO		7,064,014.12 -4.98
K5CM		7,065,507.16 -6.30
W8RKO	3,597,871.21 -6.49
K5CM	3,599,482.70 -5.23

Method: GPSDO + fldigi in FMT mode

Soapbox: First time doing this. Thanks to the Vienna Wireless Weird and Wacky digital group for all the help.

N5TNL

EM25ui

	80m	40m
W8RKO		7,064,019.00 -0.10
K5CM		7,065,514.20 0.74
W8RKO	3,597,877.65 -0.06
K5CM	3,599,488.47 0.54

Method: RX888, ka9q-radio, pcmrecord, SDR Console to demod, Fldigi to measure.

Soapbox: Wildly guessing at Doppler corrections. I had CHU at 7849999.721 (sdev 0.091), WWV at 4999999.748 (sdev 0.043), WWV at 9999999.243 (sdev 0.091), CHU at 3329999.814 (sdev 0.032), WWV at 5000000.159 (sdev 0.012), WWV at 9999999.719 (sdev 0.091).

N7QXB

DN40cq

	80m	40m
W8RKO		7,064,018.80 -0.30
K5CM		7,065,514.01 0.55
W8RKO	3,597,877.55 -0.15
K5CM	3,599,488.11 0.18

Method: Elecraft K4D, Leo Bodnar GPSDO, WWV, and Spectran software

Soapbox: Thanks to W8RKO and K5CM for hosting the FMT. Good signals all around.

N7WS

DM42jh

	80m	40m
W8RKO		7,064,018.60 -0.50
K5CM		7,065,513.40 -0.06
W8RKO	3,597,877.50 -0.20
K5CM	3,599,488.40 0.47

Method: Method: Bodnar GPSDO through stepped attenuator to directional coupler to SDR-IQ RX input. Bodnar set to ~600 Hz below received signal. Record AM demodulated spectrum via SpectraVue S/W for later analysis. Extract keydown portion of audio with Audacity S/W. Analyze with Spectrum Lab S/W.

Soapbox: First, thanks to Connie and Mike for their efforts. The bands were generally awful, with very rapid QSB on all frequencies. On K5CM's 40M QRG a POTA station was calling CQ and on W8RKO's 80M there was a Mexican SSB QSO adding to the fun. Still, it was fun.

N8OF

EM41sg

	80m	40m
W8RKO		7,064,018.98 -0.12
K5CM		7,065,514.43 0.97
W8RKO	3,597,877.81 0.11
K5CM	3,599,488.83 0.90

Method: Icom 7560proII transceiver, SignalLink USB audio capture via Fldigi ver 4.2.09 FMT modem for capture and analysis. Fldigi also was used for CAT control of transceiver. Excel and Audacity 3.7.5 were used for post processing. Trimble based GPSDO provided 10MHz reference for HP5344A counter, HP3336C sig gen and HP8657A sig gen. The two sig-gens provide reference signals above below and above the expected unknown signal. The counter was used to verify the reference frequencies before and after the test. The reference signals were loosely coupled to antenna via wires near antenna feed. The reference signals were present during the FMT event a few hundred Hz above and below target signal. The receiver was tuned 1KHz lower than target frequency. The target range was monitored for the call up and recorded during that period in addition to key down period. Post analysis was FMT spreadsheet charting and acknowledging that the recording was probably ok. The csv file Time code for anomalies were noted that would have affect on leveling filter response. The wave file was edited in Audacity such that the target signal was continuous. This was iterative process between Fldigi, Excel and Audacity by recording recoding the base band playback in Fldigi and examining the resultant csv file.

Soapbox: This was my first FMT. I had trouble trouble identifying the target unknown because my code skills are rusty and there was much interference in the 40m and 80M bands. Signals identified were those that made sense or were measurable.

N8OQ

FM07uv

	80m	40m
W8RKO		7,064,018.54 -0.56
K5CM		7,065,514.11 0.65
W8RKO	3,598,877.95 1,000.25
K5CM	3,599,488.29 0.36

Method: Elecraft K4 #1571 + Miller GPSDO + Cap-Hat vertical + Bodnar GPSDO + WSJT-X 2.8.0 Freqcal + Excel. Measured inserted Bodnar carrier at 7065000 and 3599000 before and after keydown. Used last and first Bodnar measurement between keydown to form simple linear estimate of the Bodnar carrier frequency at the mid-point.

Soapbox: Problems: No matter what I did, lock VFOs, turn off split in software and K4, everytime I moved the Freqcal measurement bug the K4 would change VFO frequency. I think I got it all figured out but who knows so are their large bias in my numbers? Kp was 4.7 and BZ +2.0. 40m: Both big signals, W8RKO moving around some. 80m: Both again big signals. W8RKO had two extremely close carriers during keydown. The Freqcal bug measured the strongest I presume. 40m RMS W8RKO (1.287-Hz), K5CM (0.326-Hz). 80m RMS W8RKO (0.121-Hz), K5CM (0.374-Hz).

NF7R

DM26so

	80m	40m
W8RKO		7,064,019.09 -0.01
K5CM		7,065,514.19 0.73
W8RKO	3,597,877.94 0.24
K5CM	3,599,488.96 1.03

Method: IC-7300;FLRIG/FLDIGI;
Used Freq analysis too build database. Manually trimmed obvious outliers and TRIMMEAN for final figure.

Soapbox: Immense thanks to K7NG for mentoring my effort.
Very good sigs all freqs.
Waiting to see if I need a paper bag mask or order a coffee mug.

NV3C

FN00es

	80m	40m
W8RKO		7,063,998.40 -20.70
K5CM		7,065,498.43 -15.03
W8RKO	3,597,998.21 120.51
K5CM	3,599,498.44 10.51

Method: IC9100, with reference signal from a HP3336 and GPSDO. FLDigi in FMT mode.

Soapbox: Thanks, conditions were a bit challenging, had high std dev. I might be 500Hz high on the last run??

RU0LL

PN53xt

	80m	40m
W8RKO		7,065,518.65 1,499.55
K5CM		7,064,013.36 -1,500.10
W8RKO	3,597,877.77 0.07
K5CM	3,599,488.08 0.15

Method: (none)

Soapbox: (none)

VE2IQ

FN15nt

	80m	40m
W8RKO		7,064,021.38 2.28
K5CM		7,065,513.95 0.49
W8RKO	3,597,877.42 -0.28
K5CM	3,598,988.14 -499.79

Method: E-probe > TS850 > soundcard, tune for audio near 800 Hz, note TS850 dial freq, measure audio, calculate RF input. TS850 20 MHz clock derived from external freq std, overnight (24h) measure freq std error per GPS.

Soapbox: W8RKO 40M signal was messy (aurora?) - hard to process. Other signals were fine, S9+10 or so. Monitored WWV 5 MHz error during FMT. Showed positive Doppler during K5CM 80M time. Ignored it because in all these years the error on that path has always been negative. Tnx Connie and Mike for another interesting FMT.

VE3GQW

FN16fd

	80m	40m
W8RKO		7,064,022.36 3.26
K5CM		7,065,513.86 0.40
W8RKO	3,597,877.34 -0.36
K5CM	3,599,488.06 0.13

Method: TS-870 with GPSDO ref. osc. FLdigi saved the audio during the runs. The audio files were sent to ChatGPT along with the UNK WF freq. (the audio freq. the UNK cursor is set to on the WF for the run.) The results are what ChatGPT calculated.

Soapbox: See the soapbox for VE3YX.
VE3RYA did the ChatGPT part.

VE3GSO

EN92ix

	80m	40m
W8RKO		7,064,017.92 -1.18
K5CM		7,065,513.78 0.32
W8RKO	3,597,879.33 1.63
K5CM	3,599,488.30 0.37

Method: Bodnar reference beating 400~600Hz away from signal, with receiver tuned in AM. Beat measured with Spectrum Lab.

Soapbox: Lots of QRM in the form of digital, SSB, a few CW close in calling, and loads of Doppler, such that dual traces seen. Which to chose? May have also been some Auroral Flutter just to confuse things. I'm more unsure of this FMT than many before. A Index of 43. Fingers crossed.

VE3PIK

EN93ka

	80m	40m
W8RKO		7,064,020.50 1.40
K5CM		7,065,517.00 3.54
W8RKO	3,597,877.70 0.00
K5CM	3,599,488.80 0.87

Method: SDRPlay RSPdx with QRP-Labs GPS-locked VFO reference. Analysis by Mk I eyeball in SDRuno.

Soapbox: QTH was LARC club station. Pretty challenging this time. Much QSB: 20 Hz broadening at times. Doppler on CHU and WWV were all over the map, +/- 2 Hz. GPS lock intermittent throughout. So this one is pretty much throwing a dart.

VE3YX

FN16fd

	80m	40m
W8RKO		7,064,022.24 3.14
K5CM		7,065,514.18 0.72
W8RKO	3,597,877.08 -0.63
K5CM	3,599,488.97 1.04

Method: TS-870 with GPSDO ref. osc. FLdigi in FMT mode. Averaged the cleaned up data in Excel.

Soapbox: All the signals were spread out up to maybe 5 Hz on the FLdigi WF and sounded odd. SL showed them to be about 2 Hz wide with no evident peak. Presumably, the aurora was messing them up. Signal levels were OK and Connie's 80 m signal was S9+20.
Thanks again Connie and Mike.

VE3ZRK

FN35di

	80m	40m
W8RKO		7,064,020.70 1.60
K5CM		7,065,514.30 0.84
W8RKO	3,597,878.40 0.70
K5CM	3,599,488.40 0.47

Method: Comparison / HP Z3801A GPSDO controlling HP 3335A Synthesizer - Level Generator / Yaesu FT-897 Xceiver / coax relay switched the Yaesu RF input between the off air antenna and the level generator output / Yaesu audio out to Ugreen USB sound card feeding a laptop running Visual Analyser v25.78

Soapbox: Soapbox: Good signals on all four transmissions
Many thanks to David Green VE3TLY for his help
And many thanks to the crew who put this FMT event together.

VE6GRT

DO22qd

	80m	40m
W8RKO		7,064,019.30 0.20
K5CM		7,065,513.20 -0.26
W8RKO	3,597,877.60 -0.10
K5CM	3,599,489.80 1.87

Method: RSPduo Reciever running SDRUno software, feeding audio into homebrew analysis software. Calibration using WWV 5.0 MHz and CHU 3.33 and 7.85 MHz

Soapbox: Thx to Glenn and Grandsons for hanging my new wire antenna

W1HB

FM18ku

	80m	40m
W8RKO		7,064,018.15 -0.95
K5CM		7,065,514.85 1.39
W8RKO	3,597,876.90 -0.80
K5CM	3,599,488.50 0.57

Method: (none)

Soapbox: (none)

W2FD

EN91wx

	80m	40m
W8RKO		7,064,018.60 -0.50
K5CM		7,065,514.26 0.80
W8RKO	3,597,877.51 -0.19
K5CM	3,599,488.44 0.51

Method: IC 7100, Audio Generator, Oscilloscope, Frequency Counter. Measure CW/CW-R near 600 Hz. audio offset from receiver using synched scope, audio generator and frequency counter to get better frequency resolution.

Soapbox: Rather poor conditions in general with multipath and rapid phase variations. Signal strengths were not weak, but they were not as strong as the April FMT. Thanks, Mike and Connie for your efforts.

W2KI

FM05ow

	80m	40m
W8RKO		7,064,018.49 -0.61
K5CM		7,065,513.79 0.33
W8RKO	3,597,879.16 1.46
K5CM	3,599,488.30 0.37

Method: IC7200 receiver, 41' wire antenna only 12' high, Bodnar LBE-1420 GPSDO as reference frequency into FLDIGI in FMT mode alongside Unknowns. Brought FLDIGI Recorded samples at 0.25 second intervals into Spreadsheet for average measurement and consistency. Measured frequencies of WWV at 2.5, 5 and 10 MHz before, between and after the tests to derive approximate Doppler correction factors applied to the measured Unknown frequencies.

Soapbox: First time back to FMT in many years. Signals here in NC seemed to vary in frequency more than I would expect, perhaps due to my poor low antenna, or inconsistent environmental air flow in shack. This time I should have done more practice at the FMT's UTC time in the days before the test measuring WWV alongside the reference signal. Not totally comfortable with the way I calculated corrections for Doppler effects using WWV, results will tell. First time using Bodnar GPSDO, and didn't achieve consistent injection and strength of reference signal alongside the Unknowns. Clearly, more practice needed here in all these areas. Thanks to all who make the FMT happen.

W2TX

EM74se

	80m	40m
W8RKO		7,064,018.61 -0.49
K5CM		7,064,993.75 -519.71
W8RKO	3,597,877.64 -0.06
K5CM	3,599,488.11 0.18

Method: (none)

Soapbox: All four signals were strong, but all had several hundred mHz of variation due to doppler(?) which, in my experience, is unusual for the November FMT here in GA.

W3FAY

FM18ox

	80m	40m
W8RKO		7,064,018.00 -1.10
K5CM		7,065,515.00 1.54
W8RKO	3,597,878.00 0.30
K5CM	3,599,488.00 0.07

Method: Kenwood TS-890S w/Leo Bodnar GPSDO reference; vertical; Spectrum Lab audio software. Radio set to USB, adjusted VFO frequency for 600 Hz peak audio measurement on Spectrum Lab. Added 600 Hz to VFO dial frequency reading to obtain measured frequency.

Soapbox: Changed up my technique and audio software from previous year. First frequency measurement was a quick one before transmission ended; not sure I got it right. All signals were strong and stable. Another fun FMT event!

W3JW

FM17tq

	80m	40m
W8RKO		7,064,018.99 -0.11
K5CM		7,065,514.52 1.06
W8RKO	3,597,877.97 0.27
K5CM	3,599,488.30 0.37

Method: IC 7610(with ext 10MHz xtal ref) into SpectrumLab

Soapbox: First off, I am sad to report that we have lost one of our FMT regulars. Gary Anderson, W4IVF, became a silent key in September. He was a long time participant in our events, usually scoring in the "green box". He will be missed. For this test signals were strong for all four transmissions (10 to 20 dB over nine for all) but propagation was noticeably disturbed with extra large amounts of shift and multipath to wade through to get a valid reading, Many TNX to Connie, Mike et al for making the test possible.

W4VU

FM06hm

	80m	40m
W8RKO
K5CM		7,065,514.40 0.94
W8RKO	3,597,878.30 0.60
K5CM

Method: HP3586B with QRP Labs GPSDO. Antenna EFHW dipole at 30ft. Locked in signal as close as possible during call up and used 400 Hz filtering. Once steady carrier heard locked frequency then wrote down as many observations as possible on paper. Once test over took values with highest frequency of occurrence.

Soapbox: Good run - good signals both stations both bands but QRM an issue. Thanks for the test!

W5LAC

EM51hh

	80m	40m
W8RKO		7,064,018.90 -0.20
K5CM		7,065,514.40 0.94
W8RKO	3,597,878.00 0.30
K5CM	3,599,489.50 1.57

Method: Flexradio 3000 & FLDigi

Soapbox: W8RKO 40m was +20dm, other signals were fairly weak.

W5SSV

EL39ax

	80m	40m
W8RKO		7,064,018.50 -0.60
K5CM
W8RKO
K5CM	3,599,446.50 -41.43

Method: HP3586 in count mode.

Soapbox: Worst conditions ever!

W6BM

CM87uv

	80m	40m
W8RKO		7,064,018.18 -0.92
K5CM		7,065,513.22 -0.24
W8RKO	3,597,877.55 -0.15
K5CM	3,599,488.33 0.40

Method: Hammarlund SP600 + 4 synthesizers + thunderbolt

Soapbox: Good signals tonight in California, with lots of Doppler. Thanks all.

W6DSR

CM88iw

	80m	40m
W8RKO		7,064,019.20 0.10
K5CM		7,065,513.80 0.34
W8RKO	3,597,877.50 -0.20
K5CM	3,599,487.30 -0.63

Method: Coherent receiver with GPSDO 10 MHz reference feeding an 11 digit counter. This year I developed an algorithm based on my horoscope to guess at the frequencies.

Soapbox: Signals were strong on the left coast; -70 dBm to -53 dBm. Spanish SSB conversation on 40 caused some interference.

W6OQI

DM04vf

	80m	40m
W8RKO		7,064,017.60 -1.50
K5CM		7,065,513.10 -0.36
W8RKO	3,597,877.70 0.00
K5CM	3,599,487.90 -0.03

Method: HP3586 Selective level meter and HP 3336B generator. Both are locked to GPS 10 Mhz reference.

Soapbox: Signals were good here in Southern California with no QRM. W8RKO 80 meter signal was weak but could be measured.

W7KBW

FM19td

	80m	40m
W8RKO
K5CM		7,065,017.70 -495.76
W8RKO	3,598,178.35 300.65
K5CM	3,599,489.61 1.68

Method: Yaesu FT DX 1200, RIG BLASTER, FLDIGI, Dipole

Soapbox: Wish there were more of these.

W7SUA

DM34rs

	80m	40m
W8RKO		7,064,018.53 -0.57
K5CM		7,065,513.29 -0.17
W8RKO	3,597,877.49 -0.22
K5CM	3,599,488.15 0.22

Method: GPSDO stabilized K4D, sig gen with GPSDO input, 160 OCF inv-V. Used the fldigi FMT modem. Shifted my sig gen ref and my K4D dial setting to follow K5CM's shift up in frequency to move above the QRM.

Soapbox: Thanks Connie and Mike! Great fun. I did notice before calibration runs show negative Doppler on CHU but afterwards I measured positive Doppler on CHU. After reviewing my before and after calibrations and my plotting on the FMT signals I did not apply any corrections. Will see if I get under 1 Hz error!

W8DPK

EM89iu

	80m	40m
W8RKO		7,064,021.04 1.94
K5CM		7,065,513.89 0.43
W8RKO	3,597,877.41 -0.29
K5CM	3,599,488.36 0.43

Method: Flex-6500 with GPSDO 10MHz reference.
WSJT-X in FreqCal mode to measure audio frequency.
Average of about 20 measurements.

Soapbox: Much thanks to Mike and Connie for providing these signals.
W8RKO is only 50 miles away, and his 40m signal was very weak and very fuzzy (doppler?) with foreign SSB QRM. His 80m signal was strong and clear.
K5CM had strong, clear signals on both bands here in Ohio.

W8EDU

EN91em

	80m	40m
W8RKO		7,063,319.13 -699.97
K5CM		7,064,899.71 -613.75
W8RKO
K5CM

Method: IC-7610 with fldigi

Soapbox: This submission is from the Case Western Reserve University Amateur Radio Club. Special thanks to NM3OW, KC3OAH, KJ5DJE, WB2SGR, KF8DIA from W8EDU for submitting these on behalf of the club.

W8TM

EM79te

	80m	40m
W8RKO		7,064,014.00 -5.10
K5CM		7,065,514.00 0.54
W8RKO	3,597,878.00 0.30
K5CM	3,599,488.00 0.07

Method: K3 calibrated against 10 MHz WWV.

Soapbox: Not much confidence in readings this time, especially W8RKO weak on 40m because close.

W9GR

CM99mg

	80m	40m
W8RKO		7,064,019.05 -0.05
K5CM		7,065,513.45 -0.01
W8RKO	3,597,877.72 0.02
K5CM	3,599,488.50 0.57

Method: FlexRadio 6500 locked to Trimble GPSDO, HP3325A also GPS locked provides 2 kHz audio tone to calibrate sampling rate of Denon digital audio recorder. Sox (software) resamples recorded WAV file from 44.1 kHz to 8 kHz. Homebrew GNU Octave code measures weighted average audio frequency using received envelope amplitude as the weighting.

Soapbox: Good signals on all four runs, as always with lots of QSB and a few deep fades. Thanks to W8RKO and K5CM for providing the transmissions - this event is always a lot of fun.

W9INE

DN70gi

	80m	40m
W8RKO		7,064,019.23 0.13
K5CM		7,065,513.25 -0.21
W8RKO	3,597,878.01 0.31
K5CM	3,599,488.58 0.65

Method: FLEX-6700 and FLDIGI in Frequency Analysis mode.

Soapbox: All signals were strong (S/N=50 to 60 dB). QSB on W8RKO 40 MTR.

W9ZB

EM69xp

	80m	40m
W8RKO		7,062,516.00 -1,503.10
K5CM		7,064,013.50 -1,499.96
W8RKO	3,596,377.00 -1,500.70
K5CM	3,597,988.00 -1,499.93

Method: 5 Band Vert. Ant, Icom 706 MKIIG, Win 11 with WSJT-X in
Freq Cal mode. Averaged 1500Hz readings.

Soapbox: W8RKO weak on 40M, but got readings. A bit better on 80M. K5CM very strong on both bands. I hope I got close. Thanks guys for doing these. I still enjoy this at age 87 this month.

WA1SXK

EM95lf

	80m	40m
W8RKO		7,064,018.66 -0.44
K5CM		7,065,514.19 0.73
W8RKO	3,597,877.59 -0.11
K5CM	3,599,488.31 0.38

Method: IC-7300 using Bodnar GPSDO as a REF signal. Record FMT test signal data using FLDIGI in FMT mode. Plot data on charts and view to eliminate doppler effects.

Soapbox: QRM on 1st FMT test but I was able to capture data. Tests 2, 3, and 4 had good signals here on the east coast. I lost my Bodnar Ref. signal lock just before key down on test 2, lost all satellites, but I was able to relock by moving the antenna closer to a window. Noticed steady doppler on all FMT tests, with about (+ -) 500mili HZ on both bands and from both stations. Thank you both for performing the FMT for us, I always look forward to FMT testing to dust off my equipment and refresh my procedures for FMT. Best of 73 to all! Eric/wa1sxk

WA4BQM

FM18iv

	80m	40m
W8RKO		7,064,018.47 -0.63
K5CM		7,065,514.69 1.23
W8RKO	3,597,877.38 -0.32
K5CM	3,599,488.04 0.11

Method: GPSDO controlled signal generator coupled to RF input of an Elecraft K4D locked to second GPSDO. Signal generator set approximately 1000 kHz from expected signal for each run.

Soapbox: Good signals to both stations. Signal generator a little unstable on W8RKO 80M run.

WA4FJC

FM08lf

	80m	40m
W8RKO		7,064,019.30 0.20
K5CM		7,065,303.00 -210.46
W8RKO	3,597,877.20 -0.50
K5CM	3,599,488.50 0.57

Method: Thunderbolt GPS, HP 3586B SLM, 80 M dipole, Spectrum lab as a tuning indicator

Soapbox: Thanks for the signals.

WA5UCW

DM65sd

	80m	40m
W8RKO		7,064,018.65 -0.46
K5CM		7,065,513.18 -0.28
W8RKO	3,597,877.58 -0.13
K5CM	3,599,488.09 0.16

Method: DIY direct conversion receiver, stabilized by Leo Bodnar GPSDO, with horizontal loop antenna. WSJTX and Spectrum Lab to measure and log data. Scilab and Excel to plot and analyze results.

Soapbox: Good signal strengths (S/N ratios 30-50 dB) with wider than normal short term frequency variations. Doppler effects varied significantly over the duration of the test.

Thanks to Connie, Michael, and ARRL for conducting this event.

WA7BNM

DM04td

	80m	40m
W8RKO		7,064,018.25 -0.85
K5CM		7,065,513.16 -0.30
W8RKO	3,597,877.57 -0.13
K5CM	3,599,488.30 0.37

Method: Receiver: Icom R-8600
Antenna: SteppIR DB-36 at 70 ft - used 40m setting for both bands
Software: Fldigi 4.1.26 in Freq Analysis mode
Used GPSDO as external frequency reference for R-8600.
Averaged Fldigi measurements associated with strongest signals

Soapbox: (none)

WB2CMF

FN30lu

	80m	40m
W8RKO		7,064,018.35 -0.75
K5CM		7,065,513.72 0.26
W8RKO	3,597,878.58 0.88
K5CM	3,599,489.88 1.95

Method: Kenwood TS-2000, Cushcraft R8 Vertical for 40Meters, and 80 Meters, HP Win 10 Desktop, Rigblaster PC Interface, Fldigi software v4.2.09 in frequency analysis mode.

Soapbox: 40 and 80 meter signals were generally good. W8RKO signals were stronger and steadier than K5CM. K5CM had more QSB on 80 meters.

WB4DFW

EM84nr

	80m	40m
W8RKO		7,064,018.00 -1.10
K5CM		7,065,513.00 -0.46
W8RKO	3,597,876.00 -1.70
K5CM	3,599,487.00 -0.93

Method: Kenwood TS-480HX and WSJT-X software

Soapbox: Good signals from both stations on both bands, with 80 meters a solid 599. The rig warms up for two days before the FMT and I alternate between 10 MHz and 15 MHz WWV to determine my frequency offset (it still shifted about 3 Hz over the warmup period after "stablizing"). The result is an unsophisticated setup can only resolve to one hertz digitally, and that depends on a very steady hand on the VFO with my glasses on lining up the signal on the WSJT-X waterfall! Fun time!

WO7V

CN92eg

	80m	40m
W8RKO		7,064,018.98 -0.12
K5CM		7,065,513.37 -0.09
W8RKO	3,597,877.50 -0.20
K5CM	3,599,488.60 0.67

Method: Flexradio 6600 using a GPS reference. Fldigi software is using the Frequency analysis mode. Average the keydown samples taken at 1-second intervals using LibreOffice Calc.

Soapbox: I had to run my station in Oregon remotely from my sister's place in Arizona. All signals were S9 or better, with little QSB. There was There was some possible interference before the test began, as the VE's can use that part of the band for phone, but it cleared up just in time.
I find the FMTs very interesting, but my biggest problem is that there is often something that distracts me, and I forget to participate.

WQ8T

EN74hf

	80m	40m
W8RKO		7,064,018.74 -0.36
K5CM		7,065,513.85 0.39
W8RKO	3,597,877.73 0.03
K5CM	3,599,488.50 0.57

Method: Equipment:
HF2V antenna, an HP 3586C with an internal GPSDO, an RSP1A and a computer running SDRuno and DL4YHF's Spectrum Lab software to analyze the 15.625 kHz IF signal from the HP 3586C.

Method:
The RSP1A is used to spot the frequency of the call-up signal and then the HP 3586C is tuned to this frequency. Spectrum Lab is used to determine the frequency of the peak IF signal from the HP 3586C. The change of this value from 15.625 kHz is subtracted from the HP 3586C frequency setting to determine the received frequency. The sound card is calibrated using Spectrum Lab’s continuous calibration using a 10 kHz reference signal, also from the HP 3586C.

Soapbox: Thank you K5CM and W8RKO.

WS3W

FM19ng

	80m	40m
W8RKO		7,064,017.77 -1.33
K5CM		7,065,514.56 1.10
W8RKO	3,597,877.94 0.24
K5CM	3,599,488.27 0.34

Method: (none)

Soapbox: This is a cool "contest"

Frequency Measuring Tests

Results - November 7, 2025 FMT