K5CM FMT 0200 UTC March 31, 2017    Thursday evening in Oklahoma


Call Section Grid Comments
AB2UW NLI FN30lu 80m signal moved +/- ~1Hz during key down! Will be amazed if I get a reasonable result.
AF9A IN em69 Big signals this time.  9 +20dB
K0WM CO DM79jt Good signals on both bands.  Calibated receiver on WWV 5.0 MHz and CHU 7.85 MHz.
K3KO NFL EM90 40M very stable. 80M showed big Doppler oscillation first half of run
K3KO NFL EM90 Thanks Connie. Warmup uncovered some mental cobwebs.
K5RKS OK EM15 Signal strength   40m = S4;   80M =  S6  --   Bands were in "fair" cndition with only moderate noise. Received signals at least 6dB louder than noise floor. Took a number of separate 8 second readings. All of them for any given band within +/- 0.4Hz
KA5QEP OK EM15mj Reception using a 45 year old Raytheon 1230 all by itself.  Lots of thunderstorm static on 80M.
KD5MMM STX EL19ds 40m was weak,could not hear the callup, nice sig on 80m
N3IZN SDG DM13ji  
VE3GSO ON EN92ix Lots of local lightning. S9 signals, but 80m was shifting up and down several Hz.  Thanks Connie
W2TX SFL EL97qw Thank you for the practice, Connie. Signals on both bands were around 25 uV., plenty good for measurements. There was some spread in frequency on both bands.
W3JW VA FM17tq First FMT activity from new QTH.
W4WJ STX EM00mg QRN vy bad on 40m.  Doppler all over the place. Signal S4.  80m, QRN marginal. Doppler slight. Signal S9.  TNX Connie.  73, Don, W4WJ
W6BM EB Good signal strengths, huge doppler on 80 more than +/-2 Hz on peaks.
W7CQ ORG CN83jx Connie. Great signal strength on both bands. The 80meter signal was spread over 2.5 hz so my report is a BIG guess on 80.  Thanks for the trials.  Jimmy W7CQ
W7PUA ORE Good signal strength, but lots of spreading.  Interesting to do this with some disturbance up there.  Thanks much, Connie, for the extra run.  Bob
W9ZB AL EM69xp Strong signals here. Tnx Connie.
WA4FJC VA FM07 Thanks Connie
WB0LXZ KS EM27pj I needed this. Computer (didn't create file), Thunderbolt (power supply failure), Brain (rusted out) all needed refurbishing. Thanks Connie. -bill





Those who copied all transmission to better than .5 Hertz

Call Section Grid Average PPX
W9ZB AL EM69 1.34E-08
W2TX SFL EL97 1.51E-08
W7PUA ORE   2.02E-08
N3IZN SDG DM13 2.25E-08
W3JW VA FM17 2.63E-08
W4WJ STX EM00 2.73E-08
KD5MMM STX EL19 3.56E-08
K5RKS OK EM15 3.66E-08
WB0LXZ KS EM27 4.72E-08
K3KO NFL EM90 5.96E-08
W6BM EB   6.16E-08






(0215 UTC, March 31)


80 Meters

TX Frequency: 3599048.126

Call Section Grid Tx Frequency K5CM 80 Error in Hz Error in PPX
W9ZB AL EM69 3599048.126 3599048.100 -0.026 7.22E-09
VE3GSO ON EN92 3599048.126 3599048.100 -0.026 7.22E-09
N3IZN SDG DM13 3599048.126 3599048.160 0.034 9.45E-09
AB2UW NLI FN30lu 3599048.126 3599048.170 0.044 1.22E-08
W3JW VA FM17 3599048.126 3599048.172 0.046 1.28E-08
W7PUA ORE 3599048.126 3599048.070 -0.056 1.56E-08
W2TX SFL EL97 3599048.126 3599048.070 -0.056 1.56E-08
WB0LXZ KS EM27 3599048.126 3599048.010 -0.116 3.22E-08
W4WJ STX EM00 3599048.126 3599048.000 -0.126 3.50E-08
KD5MMM STX EL19 3599048.126 3599048.300 0.174 4.83E-08
K0WM CO DM79 3599048.126 3599048.372 0.246 6.84E-08
K5RKS OK EM15 3599048.126 3599048.387 0.261 7.25E-08
W6BM EB 3599048.126 3599047.800 -0.326 9.06E-08
K3KO NFL EM90 3599048.126 3599048.538 0.412 1.14E-07
AF9A IN EM69 3599048.126 3599047.610 -0.516 1.43E-07
W7CQ ORG CN83 3599048.126 3599047.500 -0.626 1.74E-07
KA5QEP OK EM15 3599048.126 3599046.000 -2.126 5.91E-07
WA4FJC VA FM07 3599048.126 3599028.500 -19.626 5.45E-06






(0200 UTC, March 31)


40 Meters

TX Frequency: 7066108.861

Call Section Grid Tx Frequency K5CM 40 Error in Hz Error in PPX
K5RKS OK EM15 7066108.861 7066108.866 0.005 7.08E-10
K3KO NFL EM90 7066108.861 7066108.828 -0.033 4.67E-09
AF9A IN em69 7066108.861 7066108.940 0.079 1.12E-08
W2TX SFL EL97qw 7066108.861 7066108.757 -0.104 1.47E-08
W4WJ STX EM00mg 7066108.861 7066109.000 0.139 1.97E-08
W9ZB AL EM69xp 7066108.861 7066109.000 0.139 1.97E-08
KD5MMM STX EL19ds 7066108.861 7066108.700 -0.161 2.28E-08
W7PUA ORE 7066108.861 7066108.685 -0.176 2.49E-08
W6BM EB 7066108.861 7066108.630 -0.231 3.27E-08
WA4FJC VA FM07 7066108.861 7066109.100 0.239 3.38E-08
N3IZN SDG DM13ji 7066108.861 7066108.610 -0.251 3.55E-08
W7CQ ORG CN83jx 7066108.861 7066108.589 -0.272 3.85E-08
W3JW VA FM17tq 7066108.861 7066109.142 0.281 3.98E-08
WB0LXZ KS EM27pj 7066108.861 7066109.300 0.439 6.21E-08
K0WM CO DM79jt 7066108.861 7066109.515 0.654 9.26E-08
AB2UW NLI FN30lu 7066108.861 7066108.180 -0.681 9.64E-08
VE3GSO ON EN92ix 7066108.861 7066109.700 0.839 1.19E-07
KA5QEP OK EM15mj 7066108.861 7066110.000 1.139 1.61E-07



A little different look at the data from Steve, WA9VNJ








Transmitting equipment used by K5CM for this FMT:

A HP Z3801 GPS frequency source clocks a HP-3336B. The output is feed to a 10 db transistor amp which drives a 12BY7 / pair 6146. Then to a MLA-2500 running about 400 watts.  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. 

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 - Dipole.  (favors West, North, East)

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

 20 - 4el SteppIR at 70'





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