K5CM FMT MAY 21 2015

Readings are listed by quickest time to report and within .5 Hz

K5CM - 3599012.2 Hz   


Call Section Grid Freq 80 Time in PDT Comments
VE2IQ ON FN15nt 3599012.344 20:05:14
K1GGI EMA FN41 3599012.37 20:05:20
K9KK OK EM15 3599012.385 20:05:20 Thanks Connie
KD5MMM STX EL19ds 3599012.43 20:05:30 80m
W5NZ AL em62vi 3599012.2 20:05:32
WB0LXZ KS EM27pj 3599012.4 20:05:53 HP3586b did all the work. I only used its frequency counter.
KU4PY AL EM62wj 3599012.14 20:05:53
N4AU AL EM62vp 3599012.365 20:06:08
W0HBK IA EN42 3599012 20:06:20
Not within .5 Hz
W5AJ WTX DM82 3599013.3 20:05:16 k3 with original KSYN3, 400hz roofing filter and SL software
AA0CL MO EM48 3599013.25 20:05:41 Naked K3, calibrated to WWV at 5 MHz.  20 dB over S9.  Cal at 2.5 MHz was higher in freq but I'm sticking with 5 MHz cal (we'll see).
WA4FJC VA FM08lf 3599011.56 20:06:13 SLM with a different technique.  We shall see.  TNX Connie.
KMZ KS EM28ix 3599008 20:06:21 I forgot to enter my call, state (KS), and grid for 40.  This time maybe I will be faster as it is all part of the fun.  Your signal for 80 was more than 40 over S9. Thanks, Connie, lets do this again as it is great for pre production planning.





K5CM - 7064010.6 Hz   


Call Section Grid Freq 40 Time Comments
VE2IQ ON FN15nt 7064010.735 19:35:13
W5AJ WTX DM82 7064010.45 19:35:14 Thanks, nice test  Perhaps space different bands 15 minutes apart instead of 30?
K1GGI EMA FN41 7064010.57 19:35:18
WA2DVU SNJ FM29NC 7064010.8 19:35:19
N4AU AL EM62vp 7064010.691 19:35:33
KD5MMM STX EL19ds 7064010.88 19:35:36 40m
KM6QX EB CM87 7064011 19:35:47 Dipole antenna and Flex-1500 receiver in CW mode. 600Hz tone to scope triggered by Signal Generator. Tune SG to null phase drift, then add SG(-600)to VFO.
K9KK OK EM15 7064010.42 19:35:53 Thanks Connie
W5NZ AL em62vi 7064010.9 19:35:59
KMZ AL EM28ix 7064010 19:36:12 40 was better this evening. The noise floor on 40 was about S7 to S8 with QRN. Your signal was very strong at more than 40 over S9.  Solid!
W6IHG VA FM09tb 7064010.928 19:36:41
W0HBK IA EN42 7064011 19:36:49
W3DAD MDC FM19 7064010.65 19:37:24 Thanks & 73 Kevin W3DAD
Not within .5 Hz
WB0LXZ KS EM27pj 7064011.3 19:35:58
KU4PY AL EM62wj 7064011.227 19:36:14
AA0CL MO EM48 7064011.25 19:36:24 Naked K3, calibrated to WWV at 10 MHz. My 20m entry was 0.5 Hz too low (should be 14121009.5, forgot cal offset).  Realized it too late for resubmittal.  Had to recalibrate for this test, even though same WWV (osc drift).  Nearly 10 dB over S9 this time. Form made me reenter my 20m score (why?).
WA4FJC VA FM08lf 7063998.16 19:37:05




K5CM TX -  14121007.9 Hz


Call Section Grid Freq 20 Time Comments
VE2IQ ON FN15nt 14121007.93 19:05:17
K1GGI EMA FN41 14121007.97 19:05:21
WA2DVU SNJ fm29nc 14121007.9 19:05:24
K9KK OK EM15 14121007.99 19:05:37 Thanks Connie
WB0LOXZ KS EM27pj 14121007.4 19:05:44
W5NZ AL em62vi 14121008.03 19:05:45
N4AU AL EM62vp 14121007.68 19:05:47
Dave NFL EL88ql 14121007.71 19:06:31
W6IHG VA FM09tb 14121007.8 19:06:41
KM6QX EB CM87 14121007 19:06:41 Dipole antenna and Flex-1500 receiver in CW mode. 600Hz tone to scope triggered by Signal Generator. Tune SG to null phase drift, then add SG(-600)to VFO.
KU4PY AL EM62wj 14121007.42 19:06:42
Not within .5 Hz
W5AJ WTX DM82va 14121007.13 19:05:29 K3 and SL software
KD5MMM STX EL19ds 14121008.5 19:05:32 20m stab
AA0CL MO EM48 14121009 19:05:35 Naked K3, calibrated to WWV at 10 MHz.  S4 signal on Butternut vertical.
wd6dod ORG DM13ao 14.1210073 19:06:01 Anan 100d - fldigi
KMZ KS EM28ix 1412106 19:06:33 Thanks, Connie.  This type of FMT is fun.  Your 20 meter signal this evening was s3 to s7 with kigh noise floor of s5.
WA4FJC VA FM08lf 14112.66 19:06:45
W3DAD MDC FM19 14121007.17 19:07:08 Good signal on 20M. Thanks W3DAD
WB3JFS NV DM26 14120586.12 19:10:44
N2GL OR cn85kp 0 Shutting Down before FMT start due to heavy lighting storms


Rules for this FMT:


This FMT will be more about making a quick reading than absolute accuracy.


K5CM will do a 5 minute FMT call up near the published frequency. At the end of the call up the TX frequency will be shifted by up to +/- 15 Hz. Then key down for 30 seconds. Measure the frequency of the key down signal and report your results with the Web entry form. 


To make the ranking list,  your reading must be within .5 Hz  (the entry server will automatically time stamp the entry with-in 1 second).



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 - Cage dipole.  (favors West, North, East)

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

 20 - 4el SteppIR at 70 in bi-direction mode












back to main page