K5CM FMT April 29 2015
Must be with in +/- .5 Hz........ then sorted by best time to report.
K5CM TX - 14121017.37 Hz
|call||Section||grid||Freq 20||Time pdt||comments|
|AA0CL||MO||EM48||14121017.5||19:05:58||Naked K3 calibrated to WWV @ 10MHz. Only warmed up for a couple of hours. Pretty noisy on 20m.|
|K5XL||NTX||EM12kp||14121017||19:05:59||Flex-1500 with GPSDO using Spectrum Lab|
|WA4FJC||VA||FM08lf||14121017.4||19:06:10||Tnx Connie 73 Gordon|
|KØMZ||KS||EM28ix||14121017||19:06:11||Thanks, Connie. This is a different way to have fun with FMT. 20 meter signal was between S3 and S7 with some line noise.|
K5CM - 7063994.52 Hz
|call||Section||grid||Freq 40||Time pdt||comments|
|W5AJ||WTX||DM82va||7063994.2||19:35:17||40m attempt April 2015|
|K5XL||NTX||EM12kp||7063994.4||19:35:32||Flex-1500 with GPSDO using Spectrum Lab|
|W6OQI||LAX||DM04vf||7063994.4||19:35:35||On the 20 meter FMT I lost about 20 seconds because the 40 meter box was blank and the entry form requires a number in each box. I quickly realized I had to put a zero in the 40 meter box and then I could make my submission for 20 meters.|
|AA0CL||MO||EM48||7063994.5||19:35:40||Booming signal on 40m in MO.|
|KØMZ||KS||EM28ix||7063995||19:35:53||Thanks again, Connie. Lets see how 40 does after the short 20 meter run. 40 meter signals were very strong; about 40 over S9. A little bit of QSB but mostly a very stable signal. Lets do this again. Thanks again.|
|KD5MMM||STX||EL19ds||7063994.626||19:36:27||hope I was close, 73|
|WA6RZW||CO||DM79||7063994.801||19:37:01||Thanks for running the test.|
|W4JLE||SC||EM93HV||7063994.661||19:37:27||CONNIE, THANKS FOR ALL YOU DO! NO JOY ON 20 METERS.|
|W0HBK||IA||EN-42||7063994.5||19:38:06||Thanks again Connie. Nice signals in Cedar Rapids.|
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 300 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 - 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'
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