K5CM FMT - September 11, 2011



K5CM 20 - 14065524.53

K5CM 40 - 7079529.175

W6OQI 40 -7068386.486

W60QI 80 - 3568147.368

Stations submitting readings 1 Hz or better on all possible bands sorted by average error

KM6QX EB CM87 1.15E-08
WA1ABI RI FN41jp 1.96E-08
KX0O MO EM38fm 2.74E-08
K6OQK* LAX DM04ud 2.90E-08
W0HBK IA EN-42 4.00E-08
K7HIL AZ DM42ph 4.01E-08
K6IQL KS EM28NQ 4.13E-08
W9TJ IL EM48 4.92E-08
W9ZB IN EM69xp 5.06E-08
VE2IQ ON FN15nt 6.45E-08
K6APW EB CM87uv 7.25E-08
AF9A IN EM69wv 7.75E-08
K6HGF LAX DM04 7.95E-08
WB0LXZ KS EM27pj 8.12E-08
W0PHD MN EN18oe 8.20E-08
K9KK OK EM15 1.01E-07
N2GL OR CN85kp 1.09E-07

*Some readings via direct/groundwave.



It's good to see HF conditions improving as the current Sun spot cycle slowly climbs higher, however the the Geomagnetic storms that it brings with it makes an FMT Nuts life a little more challenging. A moderate CME hit the earth on September 9th, but I think the effects lingered into our FMT period with noticeable results.

Every one appears fascinated at the apparent shift in frequency as the 20 meter antenna is moved from East to West. If you have not done so already, take the time to listen to VE2IQ's wave file of the end of the 20 meter East run and the start of the West run.  

Thanks to all that participated , and special thanks to Isidro, EA8NQ for staying up late for this FMT. 




AF9A IN EM69wv Connie, signals on 20 were pretty squirly, lots of random phase reversals.  40 was good, S9+20.  W6OQI was about 10dB out of the noise at best on both bands.  Thanks!
EA8NQ DX IL18ul RST:  K5CM 20m:549, 40m:559; W6OQI 40m:439, 80m:329 (barely perceptible).  RX: FT-897D.  Antenna: G5RV Jr. + 80m loading coils.  I simply used my rig, trying to match received carrier against the internal CW monitor.  Yes, it is not of a "laboratory accuracy" but it was fun... hi.  Best 73 and see you in next FMT.  de EA8NQ, op. Isidro.
K1GGI EMA FN41 K5CM on 40 often showed 2 rays almost .5Hz apart. On 20, wandered a couple tenths. Copy able all around just broad.
K4PO AL EM62wi 80 meter run was very close to another net call-up that interfered with that reading.  Great fun.  73, Phil
K5BTK MS EM42 'Made it just in time for only the last run with zero warm-up. 'Always wondered how badly a stone-cold measurement would err!
K5CM OK EM25IR Mr. Doppler was out in spades tonight. Marvin had a good signal on both bands
K6APW EB CM87uv Thank you Connie and Marvin for another FMT. Twenty meter west beam signal quite stable, forty and eighty not so.
K6BZZ SDG DM13id Amazing conditions- very unsettled even on Marvin's S9+ signals. All that RF from the contests all weekend really messed up the ionosphere. Thanks for running the tests.
K6HGF LAX DM04 Good sigs in So. Cal, but lots of doppler on Connie's 40 meter signal
K6IQL KS EM28NQ Thanks for a fun evening. I noted a sudden step function downward shift in the 20 M frequency of 1.3 Hz between the East and West runs. Measured and verified using two computers running SL. One processed and output text files in real time, the other recorded a .wav file and was post processed. Used my new audio calibrator to record a stable 1000Hz tone on the wave file to check for clock drift. There was none of significance. Two machines with different methods agreed to 11 mHz.Very strange. I will count the RF synthesizer next time.
K6OQK LAX DM04ud Connie's 40 and 80-Meters signals very good - too good! There was a lot of skywave Doppler shift on them. I believe I do much better when the signals are weak. Connie's 40-Meter signal was a little over 2 Hz wide due to Doppler with no real dominate trace. Even Marv's signals had more Doppler shift on them than I've seen in a long time. I used my regualr method described elsewhere on this site. It was good to have a regular FMT again. I think we were all getting a little squirrely. Thanks to both Connie and to Marv for another fine adventure into the world of propagation and FMTing. Also thanks to Pam and to Herta for the loan of their mates for the evening. _Burt, K6OQK
K7HIL AZ DM42ph Update to initial results. Not sure it is any better, but I did some more math on the results. Please toss my first (earlier) entry. Thanks K7HIL
K9KK OK EM15 Signal strengths were weak to moderate.  W6OQI on 80M was the strongest here in Central Oklahoma..  Still think your using an AM broadcast antenna.  Doppler shift spread was 0.4HZ on OQI's 40M run.  Thanks Connie and Marvin.  RF, GPS disciplined generator, and Spectrum Lab.
KD2BD NNJ FN20XD Lots of QSB and phase modulation on Marvin's carrier.
KM6QX EB CM87 Used Flex-1500 GPSDO locked and SpecLab. Turned off AGC-T on Flex to hopefully see non doppler shifted peaks.
KMZ KS EM28ix Connie and Marvin, thanks for the FMT.  The 20 meter East signal was slightly better than the West here in Kansas.  Both signals were just above the noise level with Atlas 210X.  Connie's 40 meter signal was very good.  Marvin's 40 meter signal was also quite good and his 80 meter signal had a lot of QSB and quite a bit of doppler.  I used a Heath HW-8 for the last 3 measurements.
KU44PY AL em62wj Had to compete with a CW net that started during the 80m west coast transmission.
KX0O MO EM38fm
N2GL OR CN85kp New setup for me. GPSDO locking everything. HP3335A synthesizer mixed with incomming unknown. TS450S 500Hz filter detector. Scope to peak audio signal. HP5335A counter aaveraging difference signal. Fading not too bad tonight. Maybe better in November. Thanks Connie and Marvin!
N3FG EPA FM29 Thunderstorm produced hvy qrn during FMT.  I could hear W6OQI, but qrn was too hvy for a measurement.  So here is my best shot at K5CM.  Used an IC-7200, WWV, and Spectran.  Many tnx for another first class FMT.  
N4AU AL EM62vp Kenwood TS570 and Joe Taylor's WSPR/FMT program.  Little problem here in Alabama with the 80M run.
N5DM STX EL29fs Serious Doppler on W6OQI (40/80)in STX. TS-480 w/DigiPan v2.0 Doing it the hard way. Thanks guys.
N5JOA NFL EM70vk Direct Frequency Measurement using SDR-IQ and Thinkpad T-20.  Antenna is 260 ft dipole.
N5LBZ MS EM53QV I am trying out a new setup for this test I am using K1JT Joe Taylor's FMT program. It will probably take a few runs b4 I get all the bugs worked out and learn how to calibrate the system correctly. Signals were not real strong on any band and on the 80m run someone started sending CW on the frequency and he was stronger than W6OQI so I only got a few good readings. He was doing this deliberately as he started right b4 the test and did not pause to listen. He stopped sending within 1 minute of the end of the run.
VE2IQ ON FN15nt Didnt know K5CM on 160M(?), K5CM 20M easy (heh!), K5CM 40M and W6OQI 80M tricky: 2 good lines (I avgd), W6OQI 40M strong "wind" from right. Expect I'll be off by a mile on everything.  Tnx for the fun.
W0HBK IA EN-42 Ft-920 direct frequency measurement.  Good signals.  Thanks again for doing the test!
W0PHD MN EN18oe K5CM 40 meter sig had LOTS of  doppler levels were fairly good and QRN not that bad  Thanks again guys..
W4UK SC EM93 Had some weird local interference on Marvin's 80 Meter run and could not copy through it. Used same faulty pencil to calculate these results as last time, so probably not good. Got to get new pencil! Thanks for the tests. Jerry W4UK
W6OQI LAX DM04vf There appeared to be less doppler when K5CM was beaming east on 20 meters.  Here in Southern California the signal was stronger when K5CM beamed west but doppler was less when he beamed east.
W9TJ IL EM48 Dr. Doppler's revenge after nothing but straight white lines on the standard stations spectral displays that afternoon to these spreads for the FMT.  K5CM 20 east 1.5 hz, 20 west 0.5 hz, K5CM 40 0.3 hz,  W6OQI 40 1.0 hz, W6OQI 80 0.4 hz.  Signals: K5CM 20 east weak fading, west 10 db better.  K5CM 40 9+30.  W6OQI 40 9+20 W6OQI 80 in the noise but readable.  Between band conditions and computer I got more grey hair.  Thanks to all for their efforts.
W9ZB IN EM69xp All signals were usable, even the 20M directed away.  I can usually get very close while the Morse is being sent, but I think W6OQI has a little phase jump when keying Morse.  Key down is fine.  But the doppler was huge on 80M.
WA1ABI RI FN41jp Running on a temp antenna after a visit from Irene. Sigs were mostly good, although Marvin was a little light on 80. Thanks Connie and Marvin, 73 to all.
WA2DVU SNJ FM29NB Great sigs tonight slight bsb but 20m was 20/9 and 40 was 10/9.  No qrm for a change. Did not see too much doppler either.  73, Bill - Cape May, NJ
WA4FJC VA FM08lf Trimble Thunderbolt, HP 3586B and Spectrum Lab as a tuning indicator.  Nothing heard on 80M.  Heard both east and west 20 M signals very well here in VA.  I hope I didnt mix up my entry digits this time.  Thanks Connie & Bert.
WB0LXZ KS EM27pj I seem to have got a bit rusty. I didn't see the 20M shift on Spec Lab until there were emails about it. About -.9 Hz. I chose the second transmission. HP3586B, HP3335A, Spec Lab, 80M dipole. -bill
WB6BNQ DX ???? Based upon an uncorrected IC-756proII timebase.  Will need to fix that !  Unable to copy K5CM.
WM1L EMA FN41qn Happened to be scanning the band when I heard the call for FMT.  This is my best estimate using just my K3.


K5CM 40 Meters

Call Section Grid TX Frequency Measured Freq Error in Hz Error in PPX
KM6QX EB CM87 7079529.175 7079529.163 -0.012 1.70E-09
KX0O MO EM38fm 7079529.175 7079529.156 -0.019 2.68E-09
WA1ABI RI FN41jp 7079529.175 7079529.231 0.056 7.91E-09
K6IQL KS EM28NQ 7079529.175 7079529.236 0.061 8.62E-09
N3FG EPA FM29 7079529.175 7079529.11 -0.065 9.18E-09
WA4FJC VA FM08lf 7079529.175 7079529.1 -0.075 1.06E-08
WB0LXZ KS EM27pj 7079529.175 7079529.031 -0.144 2.03E-08
AF9A IN EM69wv 7079529.175 7079529.343 0.168 2.37E-08
WA2DVU SNJ FM29NB 7079529.175 7079528.98 -0.195 2.75E-08
WB5NMZ AL EM62vi 7079529.175 7079528.98 -0.195 2.75E-08
W9TJ IL EM48 7079529.175 7079529.38 0.205 2.90E-08
N5JOA NFL EM70vk 7079529.175 7079529.4 0.225 3.18E-08
N4AU AL EM62vp 7079529.175 7079528.941 -0.234 3.31E-08
VE2IQ ON FN15nt 7079529.175 7079528.924 -0.251 3.55E-08
W4UK SC EM93 7079529.175 7079528.88 -0.295 4.17E-08
KU44PY AL em62wj 7079529.175 7079528.877 -0.298 4.21E-08
W0PHD MN EN18oe 7079529.175 7079528.856 -0.319 4.51E-08
KMZ KS EM28ix 7079529.175 7079529.5 0.325 4.59E-08
W9ZB IN EM69xp 7079529.175 7079529.522 0.347 4.90E-08
N5DM STX EL29fs 7079529.175 7079529.525 0.350 4.94E-08
K9KK OK EM15 7079529.175 7079528.696 -0.479 6.77E-08
K6BZZ SDG DM13id 7079529.175 7079528.597 -0.578 8.16E-08
K7HIL AZ DM42ph 7079529.175 7079528.467 -0.708 1.00E-07
K6OQK LAX DM04ud 7079529.175 7079528.45 -0.725 1.02E-07
K4PO AL EM62wi 7079529.175 7079528.4 -0.775 1.09E-07
K1GGI EMA FN41 7079529.175 7079528.4 -0.775 1.09E-07
N5LBZ MS EM53QV 7079529.175 7079528.381 -0.794 1.12E-07
W0HBK IA EN-42 7079529.175 7079530 0.825 1.17E-07
N2GL OR CN85kp 7079529.175 7079528.289 -0.886 1.25E-07
K6APW EB CM87uv 7079529.175 7079528.22 -0.955 1.35E-07
K6HGF LAX DM04 7079529.175 7079528.21 -0.965 1.36E-07
W6OQI LAX DM04vf 7079529.175 7079527.744 -1.431 2.02E-07
EA8NQ DX IL18ul 7079529.175 7079534 4.825 6.82E-07

K5CM 20 Meters

Call Section Grid TX Frequency Measured Freq Error in Hz Error in PPX
K9KK OK EM15 14065524.53 14065524.56 0.025 1.78E-09
W0HBK IA EN-42 14065524.53 14065524.5 -0.030 2.13E-09
WA4FJC VA FM08lf 14065524.53 14065524.5 -0.030 2.13E-09
K6APW EB CM87uv 14065524.53 14065524.56 0.030 2.13E-09
K6HGF LAX DM04 14065524.53 14065524.42 -0.110 7.82E-09
K7HIL AZ DM42ph 14065524.53 14065524.42 -0.115 8.18E-09
N4AU AL EM62vp 14065524.53 14065524.39 -0.139 9.88E-09
K6OQK LAX DM04ud 14065524.53 14065524.35 -0.181 1.29E-08
W6OQI LAX DM04vf 14065524.53 14065524.34 -0.195 1.39E-08
K1GGI EMA FN41 14065524.53 14065524.8 0.270 1.92E-08
WA2DVU SNJ FM29NB 14065524.53 14065524.84 0.310 2.20E-08
KM6QX EB CM87 14065524.53 14065524.21 -0.325 2.31E-08
AF9A IN EM69wv 14065524.53 14065524.9 0.374 2.66E-08
W4UK SC EM93 14065524.53 14065524.91 0.380 2.70E-08
N5LBZ MS EM53QV 14065524.53 14065524.98 0.448 3.19E-08
W9ZB IN EM69xp 14065524.53 14065525 0.470 3.34E-08
N5JOA NFL EM70vk 14065524.53 14065525 0.470 3.34E-08
N2GL OR CN85kp 14065524.53 14065524.04 -0.488 3.47E-08
W0PHD MN EN18oe 14065524.53 14065525.02 0.490 3.48E-08
N3FG EPA FM29 14065524.53 14065525.04 0.510 3.63E-08
WB0LXZ KS EM27pj 14065524.53 14065524 -0.530 3.77E-08
KX0O MO EM38fm 14065524.53 14065523.96 -0.575 4.09E-08
WA1ABI RI FN41jp 14065524.53 14065525.13 0.604 4.29E-08
VE2IQ ON FN15nt 14065524.53 14065525.19 0.659 4.69E-08
K6IQL KS EM28NQ 14065524.53 14065525.32 0.792 5.63E-08
KU44PY AL em62wj 14065524.53 14065525.41 0.879 6.25E-08
W9TJ IL EM48 14065524.53 14065525.43 0.900 6.40E-08
K4PO AL EM62wi 14065524.53 14065525.64 1.110 7.89E-08
K6BZZ SDG DM13id 14065524.53 14065523.23 -1.299 9.24E-08
N5DM STX EL29fs 14065524.53 14065526.3 1.770 1.26E-07
KMZ KS EM28ix 14065524.53 14065532 7.470 5.31E-07
WM1L EMA FN41qn 14065524.53 14065532.5 7.970 5.67E-07
EA8NQ DX IL18ul 14065524.53 14065534 9.470 6.73E-07

W6OQI 80 Meters

Call Section Grid TX Frequency Measured Freq Error in Hz Error in PPX
K6OQK* LAX DM04ud 3568147.368 3568147.367 -0.001 2.80E-10
W9TJ IL EM48 3568147.368 3568147.34 -0.028 7.85E-09
K5CM OK EM25IR 3568147.368 3568147.321 -0.047 1.32E-08
WA1ABI RI FN41jp 3568147.368 3568147.308 -0.060 1.68E-08
KM6QX EB CM87 3568147.368 3568147.442 0.074 2.07E-08
K7HIL AZ DM42ph 3568147.368 3568147.282 -0.086 2.41E-08
KX0O MO EM38fm 3568147.368 3568147.457 0.089 2.49E-08
K6IQL KS EM28NQ 3568147.368 3568147.266 -0.102 2.86E-08
W0HBK IA EN-42 3568147.368 3568147.5 0.132 3.70E-08
K6HGF LAX DM04 3568147.368 3568147.09 -0.278 7.79E-08
W9ZB IN EM69xp 3568147.368 3568147 -0.368 1.03E-07
KMZ KS EM28ix 3568147.368 3568147 -0.368 1.03E-07
W0PHD MN EN18oe 3568147.368 3568146.958 -0.410 1.15E-07
VE2IQ ON FN15nt 3568147.368 3568146.919 -0.449 1.26E-07
K6BZZ SDG DM13id 3568147.368 3568146.888 -0.480 1.35E-07
K6APW EB CM87uv 3568147.368 3568147.91 0.542 1.52E-07
WB0LXZ KS EM27pj 3568147.368 3568146.789 -0.579 1.62E-07
N2GL OR CN85kp 3568147.368 3568146.694 -0.674 1.89E-07
KD2BD NNJ FN20XD 3568147.368 3568146.575 -0.793 2.22E-07
K9KK OK EM15 3568147.368 3568146.515 -0.853 2.39E-07
AF9A IN EM69wv 3568147.368 3568146.5 -0.868 2.43E-07
K5BTK MS EM42 3568147.368 3568146.487 -0.881 2.47E-07
N5DM STX EL29fs 3568147.368 3568146.3 -1.068 2.99E-07
N5JOA NFL EM70vk 3568147.368 3568146.3 -1.068 2.99E-07
N5LBZ MS EM53QV 3568147.368 3568145.72 -1.648 4.62E-07
WB6BNQ DX ???? 3568147.368 3568145.501 -1.867 5.23E-07
N4AU AL EM62vp 3568147.368 3568156.351 8.983 2.52E-06
K4PO AL EM62wi 3568147.368 3568385.35 237.982 6.67E-05
WB5NMZ AL EM62vi 3568147.368 3567805.501 -341.867 9.58E-05
KU44PY AL em62wj 3568147.368 3567580.294 -567.074 1.59E-04
EA8NQ DX IL18ul 3568147.368 3568750 602.632 1.69E-04
K1GGI EMA FN41 3568147.368 3577246.7 9099.332 2.54E-03

*Ground wave range of W6OQI


W6OQI 40 Meters

Call Section Grid TX Frequency Measured Freq Error in Hz Error in PPX
K6OQK* LAX DM04ud 7068386.468 7068386.47 0.002 2.83E-10
KM6QX EB CM87 7068386.468 7068386.466 -0.002 2.83E-10
K6APW EB CM87uv 7068386.468 7068386.46 -0.008 1.13E-09
W0HBK IA EN-42 7068386.468 7068386.5 0.032 4.53E-09
KMZ KS EM28ix 7068386.468 7068386.5 0.032 4.53E-09
WB5NMZ AL EM62vi 7068386.468 7068386.394 -0.074 1.05E-08
WA1ABI RI FN41jp 7068386.468 7068386.544 0.076 1.08E-08
K5CM OK EM25IR 7068386.468 7068386.363 -0.105 1.49E-08
AF9A IN EM69wv 7068386.468 7068386.584 0.116 1.64E-08
W9ZB IN EM69xp 7068386.468 7068386.349 -0.119 1.68E-08
K7HIL AZ DM42ph 7068386.468 7068386.269 -0.199 2.82E-08
KX0O MO EM38fm 7068386.468 7068386.177 -0.291 4.12E-08
VE2IQ ON FN15nt 7068386.468 7068386.115 -0.353 4.99E-08
WB6BNQ DX ???? 7068386.468 7068386.844 0.376 5.32E-08
W4UK SC EM93 7068386.468 7068386.01 -0.458 6.48E-08
N5DM STX EL29fs 7068386.468 7068386 -0.468 6.62E-08
K1GGI EMA FN41 7068386.468 7068386 -0.468 6.62E-08
K6IQL KS EM28NQ 7068386.468 7068385.962 -0.506 7.16E-08
N2GL OR CN85kp 7068386.468 7068385.84 -0.628 8.88E-08
KU44PY AL em62wj 7068386.468 7068385.83 -0.638 9.03E-08
K6HGF LAX DM04 7068386.468 7068385.79 -0.678 9.59E-08
W9TJ IL EM48 7068386.468 7068385.79 -0.678 9.59E-08
K9KK OK EM15 7068386.468 7068385.784 -0.684 9.68E-08
K4PO AL EM62wi 7068386.468 7068385.74 -0.728 1.03E-07
WB0LXZ KS EM27pj 7068386.468 7068385.729 -0.739 1.05E-07
W0PHD MN EN18oe 7068386.468 7068385.526 -0.942 1.33E-07
K6BZZ SDG DM13id 7068386.468 7068385.491 -0.977 1.38E-07
N5LBZ MS EM53QV 7068386.468 7068385.489 -0.979 1.39E-07
N5JOA NFL EM70vk 7068386.468 7068387.9 1.432 2.03E-07
WA4FJC VA FM08lf 7068386.468 7068388.8 2.332 3.30E-07
EA8NQ DX IL18ul 7068386.468 7068390 3.532 5.00E-07
N4AU AL EM62vp 7068386.468 7068348.016 -38.452 5.44E-06

*Ground wave range of W6OQI


Audio snippets recorded by WA1ABI






Audio snippets recorded by K5CM

audio/w6oqi 9-11-11-40M-SNIP.wav

Spectrograph of W6OQI 40 Meter signal.



This from VE2IQ

Thanks for the great test. People have commented about the apparent frequency difference between beaming East and beaming West. I

thought you might like to see how it looked here in eastern Ontario FN15nt. I recorded this using my TS-850 with the AGC turned off; set

the RF gain for the East run and did not change it when you swung the beam around to the West. The attached file BEAMTURN.WAV shows the

change in signal amplitude as you turned the beam. It fades out almost completely for a while; guess that was the point of maximum

null as you were turning the beam. Very nice antenna! Although I only submitted a reading for the 20M-East frequency

keydown period, just for fun I analyzed the West run afterwards (keydown part only) using the same FFT settings. The attached file

20M-EW.GIF shows the relative amplitude spectra averaged over the keydown periods: Eastward beaming on top and Westward beaming on

bottom. The center freq of both complex FFT's was 805.1 Hz (obtained as an initial estimate from Cool Edit's freq analysis window) so the

two spectra should line up. I know you don't change frequency when the beam turns but there is a clear difference between East and

West. When beaming West only it looks like there was a strong "wind" blowing from the right. That usually means the "true" frequency is

higher than it seems. I guess some of the energy travelled directly to me from the back of the beam and some of it arrived by scatter off

something further west?


Bill VE2IQ



Spectrograph of K5CM'S 20 Meter run by VE2IQ



Transmitting equipment used by K5CM for this FMT:

A HP Z3801 GPS frequency source clocks a HP-3336B. A 10 db transistor amp follows and drives a 12BY7 / pair 6146. Then to the final amplifier, a Dentron 2500 running 350 - 500 watts out on  80, and 20 meters.  There are no mixers or any device in the chain of amplifiers that might impact the accuracy of the GPS frequency source.  As a reality check,  I periodically log the frequency source against WWV and other GPS referenced sources.  I monitor each transmission with a completely separate receive system to look for any instability or short term drift. The separate system is not locked to the GPS transmitting system, but to another GPS source.

I typically see considerably less than 1 mHz difference at 10 Mhz when comparing  two Z3801's or a Z3801 and a Thunderbolt, over a 10 to 10,000 second period. 



160 - Vertical

 80 - New Sloping dipole. Sloping down from 140'. (favors West, North, East)

 40 - Standard Dipole hanging between two 80 foot towers. (favors East, West)

 20 - 4el SteppIR at 70'


Current W6OQI FMT transmitting equipment for this FMT:



My Transmitting setup consists of a HP Z3801 clocking a HP 3336B which drives a Johnson Viking I transmitter, the output of which is attenuated by a 6 db attenuator, to then drive an Icom PW-1 amplifier to about 500 watts. The antenna is an inverted Vee which favors north and south from the Los Angeles area.







Note: Because I put the results up quickly, there will be mistakes, so don't hesitate to point them out quickly. 






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