K5CM FMT - December 30, 2007 Results


Transmit frequencies in Hz


    80 Meters - 3577343.575   (9pm CST)

    40 Meters - 7077421.777   (9:15 CST)

    20 Meters - 14057327.763  (4pm CST) (22:00 UTC)


    80 Meters - 3565000.874    (9:30 CST)



Maybe something to do with the long week-end and New years, but what ever, it was great to see the increased participation for this FMT. We had several first timers including Carl, KC4FLT, who just happened to hear my "call up" on 40 meters and was able to participate (a real Sudden FMT hi hi). 

If your an FMT-nut, conditions don't get much better than  winter time, at the bottom of the Sun Spot Cycle. There was at least one sub 10 mHz reading on all bands, with several on most bands.

Stations copying three readings to .1Hz or better


Stations copying two readings to .1Hz or better


Stations copying one reading to .1Hz or better




AA4RP GA Strong signals on 80m and 40m.  Very weak on WC with heavy QRM.  Didn't try 20m.
AA8K MI Vertical antenna, stock SDR-1000, Spectrum Lab
AB9CA AL Since I have only a crude setup can come no closer than 1 Hz, if that.  Was having some problems early so have more confidence in 40m than 80.  Was not able to make the 20m run.  Thanks for the test. Certainly is interesting to give it a try.
AF9A IN Connie, signals were S6 to S7 on 40 and 80.  W6OQI peaked about S3.  Pretty rough.  Thanks!
K1GGI EMA Local reference is the 10MHz in an HP 8594E that gets disciplined (by me) to the 5930 Loran-C GRI from Nantucket (30 miles). Method uses an HP 8640B tuned about 1kHz below signal, detect am, analyze beat with SpectrumLab. Dispersion ran around .2 to .3 Hz, tighter on 80, west 80 was spread over 1/2 Hz. West 20m run looked about 1/4 Hz higher here.
K5CM OK Marvin, noise was high on 80 but had no problem coping your signal.
K6OQK LAX I saw quite a bit of Doppler on Connie's 80 and 40-Meter evening signals.  Marv's signal from 8 miles away was a bit weaker than normal.  I probably should've rounded my readings off but this was what my instrumentation and math came up with so here it is.  I like the new entry form.  Connie - Thanks for the great FMT's and to Pam for the loan of you.
K6YAZ LAX Missed afternoon test. Marvin's signal surprisingly weak on 80.
K8EHB OH ICOM 746 w/ indoor antenna.
KB8MOU OH WC-80m was weak in Ohio and seemed to change freq a bit on my end.
KC4FLT AL Measurement taken with Ten-Tec Century 21 using zero beat, close coupled to HP 5381A 80MHZ frequency counter (last calibration 10/95 ouch) So 7077 was in the ball park? kc4flt Carl
KD2BD NNJ Great signal into New Jersey on 80-meters, Connie.  Thanks for the "Sudden FMT"!
KE2N VA My first try at making an entry. I did something (different) wrong on each band, but thought I would see how wrong. Next time I will try for one more decimal point.  Setup is a Z3801 and PTS310 injecting thru a directional coupler into an old IC765. Frequency readout on SpectrumLab, using a free-running motherboard soundcard in a brand-X PC..
N2CUA WNY Better Signal on 20 Meters then 80, Couldn't hear you on 40 Meters at all .. Heard The west coast station on 80 meters, but too much QSB. 
N7EP AZ My first K5CM FMT.  Great format, good signals and lots of Doppler.  My equipment was cold, I arrived back in AZ an hour before the 3577 kHz test, used the wrong sideband on the transceiver, in general not prepared.  Thanks for putting on these tests. Earl
N8OB OH WOW! I spent most of the day trying to get my computer working correctly and so missed the first 2 freqs and couldn't hear the WC at all.  I also was trying a new technique.
VE2AZX QC No copy on 40m.  Not sure about the WC-80m !  Excellent sig on 20m and 80m.  Thanks.
W0CNN CO Was only home for the 20M test. Got good signals on both East and West beam of 20M FMT- .1 Hz doppler shift between two. No QRM, good steady signal.Thanks again Connie for another fun FMT test!
W0PHD MN was gone for the 20 mtr test  80 meter sigs were good WC was weaker but ok 40 mtr was buried in noise at times.
W1LE EMA Napped thru the 20M test. Thanks for another FMT  Stan, W1LE  FN41sr  Cape Cod
W3CSW MDC Only S2 on 20 meters but little Doppler.
W3JW VA 20M Signal was medium readable with significant QSB---40 and 80 M sigs were good readable--- the 80M signals had the most noticeable Doppler spread at this QTH---Happy New Year and good measuring to all in 2008!
W5JUV WTX Fun stuff.  I just use my Icom 756Pro.  It is smack on freq with WWV and gets stable after a few hours warm-up.  I used your procedure in the ARRL FMT and was in the top group on 80 and 40.  Whoopee!   Doug Hutton, W5JUV
W5UFZ AZ Tnx fer the test. Happy New Year to all you FMT nuts! CU in 2008..Dick in Maricopa, AZ
W6IHG VA Just ran quick dial corrections (way different then in Nov). Strong S6 signal in VA. Noticed lots of cyclic beats on the signals. Due to sunset?
W6OQI LAX Best signal was 20 meters followed by 80 meters and then 40 meters.  40 meters was strong enough for measuring even though not as good as the other signals.
W8GF MI Connie:  Propagation here on 80 was marginal and non-existent on 40.  80 Meter readings are suspect because two carriers blanked the test signal with nearly equal strength.
W8SJV OH Great signals here in Delaware, OH.  20M-S9, 40M-S3, 80M-S9+  I have pics if you want them. 73 - John 
W9TJ IL I screwed up the data files so the submitted freqs were taken during the CW callups.  The setup is the same I used in the ARRL test.  Measurements submitted were not taken during the official measuring interval.  They went by-by with the old man's fumble fingers. 
WA1ABI RI Tnx for the many FB FMT's in 2007 Connie and Marvin. Happy New Year & 73 to all.





K5CM - 80 meter readings (3577343.575 Hz)


K6OQK LAX 3577343.576 0.001 2.80E-10
WA1ABI RI 3577343.571 -0.004 1.12E-09
W9TJ IL 3577343.570 -0.005 1.40E-09
VE2IQ ON 3577343.585 0.010 2.80E-09
K1GGI EMA 3577343.620 0.045 1.26E-08
VE2AZX QC 3577343.623 0.048 1.34E-08
W1LE EMA 3577343.520 -0.055 1.54E-08
K6YAZ LAX 3577343.640 0.065 1.82E-08
KE2N VA 3577343.500 -0.075 2.10E-08
W8SJV OH 3577343.500 -0.075 2.10E-08
KD2BD NNJ 3577343.497 -0.078 2.18E-08
W0PHD MN 3577343.471 -0.104 2.91E-08
W3JW VA 3577343.736 0.161 4.50E-08
AA4RP GA 3577343.389 -0.186 5.20E-08
W6OQI LAX 3577343.380 -0.195 5.45E-08
N7EP AZ 3577343.800 0.225 6.29E-08
AF9A IN 3577343.300 -0.275 7.69E-08
W5UFZ AZ 3577343.940 0.365 1.02E-07
K8EHB OH 3577344.000 0.425 1.19E-07
W5JUV WTX 3577344.300 0.725 2.03E-07
AJ9ON IL 3577345.000 1.425 3.98E-07
N2CUA WNY 3577345.500 1.925 5.38E-07
KB8MOU OH 3577339.543 -4.032 1.13E-06
W8GF MI 3577348.000 4.425 1.24E-06
AB9CA AL 3577587.000 243.425 6.80E-05


See a screen capture by W8SJV here



K5CM - 40 meter readings (7077421.777 Hz)


W8SJV OH 7077421.780 0.003 4.239E-10
W3JW VA 7077421.763 -0.014 1.978E-09
KE2N VA 7077421.700 -0.077 1.088E-08
W9TJ IL 7077421.690 -0.087 1.229E-08
W6OQI LAX 7077421.870 0.093 1.314E-08
WA1ABI RI 7077421.871 0.094 1.328E-08
K6YAZ LAX 7077421.900 0.123 1.738E-08
W1LE EMA 7077421.900 0.123 1.738E-08
AF9A IN 7077421.650 -0.127 1.794E-08
K6OQK LAX 7077421.919 0.142 2.006E-08
K1GGI EMA 7077421.930 0.153 2.162E-08
W5UFZ AZ 7077422.020 0.243 3.433E-08
W5JUV WTX 7077421.300 -0.477 6.740E-08
VE2IQ ON 7077422.281 0.504 7.121E-08
N7EP AZ 7077422.530 0.753 1.064E-07
AB9CA AL 7077421.000 -0.777 1.098E-07
N8OB OH 7077422.658 0.881 1.245E-07
KB8MOU OH 7077419.790 -1.987 2.808E-07
AA4RP GA 7077424.169 2.392 3.380E-07
W0PHD MN 7077424.928 3.151 4.452E-07
KC4FLT AL 7077074.590 -347.187 4.906E-05




K5CM - 20 meter readings (14057327.763 Hz)


W8SJV OH 14057327.760 -0.003 2.13E-10
W6OQI LAX 14057327.739 -0.024 1.71E-09
KE2N VA 14057327.800 0.037 2.63E-09
W3JW VA 14057327.810 0.047 3.34E-09
W3CSW MDC 14057327.814 0.051 3.63E-09
K6OQK LAX 14057327.687 -0.076 5.41E-09
W0CNN CO 14057327.670 -0.093 6.62E-09
W6IHG VA 14057327.870 0.107 7.61E-09
VE2AZX QC 14057327.552 -0.211 1.50E-08
WA1ABI RI 14057327.536 -0.227 1.61E-08
K1GGI EMA 14057327.500 -0.263 1.87E-08
AA8K MI 14057326.800 -0.963 6.85E-08
K8EHB OH 14057329.000 1.237 8.80E-08
KB8MOU OH 14057319.686 -8.077 5.75E-07
N2CUA WNY 14057318.710 -9.053 6.44E-07
n5lbz MS 14057311.400 -16.363 1.16E-06



W6OQI - West Coast 80 meter readings (3565000.873 Hz)


K5CM OK 3565000.874 0.001 2.81E-10
K6YAZ LAX 3565000.871 -0.002 5.61E-10
N7EP AZ 3565000.871 -0.002 5.61E-10
K6OQK* LAX 3565000.877 0.004 1.12E-09
VE2IQ ON 3565000.865 -0.008 2.24E-09
WA1ABI RI 3565000.903 0.030 8.42E-09
K1GGI EMA 3565000.820 -0.053 1.49E-08
W3JW VA 3565000.941 0.068 1.91E-08
W0PHD MN 3565000.964 0.091 2.55E-08
W9TJ IL 3565000.770 -0.103 2.89E-08
W5JUV WTX 3565001.000 0.127 3.56E-08
AA4RP GA 3565000.549 -0.324 9.09E-08
W5UFZ AZ 3565001.350 0.477 1.34E-07
KB8MOU OH 3565000.296 -0.577 1.62E-07
AF9A IN 3565001.610 0.737 2.07E-07

*Burt is 8 miles from Marvin and can copy his ground wave most times.

See the Excel file used to generate the final number here



Transmitting equipment used by K5CM for this FMT:

A HP-Z3801 GPS clocks a HP-3336B and a PTS-250. A small 10 db transistor amp follows and drives a 12BY7 / pair 6146. Then to the final amplifier, a Dentron 2500 or Drake L4B at 300 watts output. There are no mixers or any device in the chain of amplifiers that might impact the accuracy of the HP-Z3801.  As a reality check,  I periodically log the HP-Z3801 against WWVB.  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 but calibrated by the GPS system before the FMT.


80 -  Cage Dipole (favors East, West, and North)

40 - Dipole (favors East, West)

20 - 4 Element SteppIR Yagi



Current W6OQI FMT transmitting equipment:

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. 



Have a great New Year!!!




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