K5CM FMT - Aug 05, 2009 Results
Transmit frequencies in Hz
160 Meters - 1846070.479 (Midnight CDT)
80-A Meters - 3578426.283 (9:57 pm CDT)
80-B Meters - 3578427.327 (10:05 pm CDT)
40 Meters - 7078537.558 (9:30 pm CDT)
20 Meters - 14058142.026 (9:00 pm CDT)
80 Meters - 3567002.355 (10:50 pm CDT)
40 Meters - 7067002.254 (10:30 pm CDT)
The distance award goes to Hisa, 7L4IOU (Tokyo). He not only copied the 20 meter run but turned in a sub 100 mHz reading!
Summer time propagations conditions continue. QRN was very bad at my QTH as a severe storm was nearby.
Thanks for the comments on the two 80 meter antennas. I hope to have antenna "B" completely vertical by the next FMT. It will be interesting to see if the vertical gives better (Doppler) results than the mostly horizontal dipole.
Mr. Doppler really played havoc with Marvin's 40 meter signal. Aside from the two LAX stations who are within direct/ground wave range, WA1ABI was the only station to read within .1 Hz.
Thanks to all that participated.
Stations submitting readings on all possible bands (7):
Stations submitting 6 or more readings:
A look at all readings 10 millihertz or better:
*Burt is in direct/ground wave range of Marvin (about 8 miles).
** Doug is about 15 miles from Marvin
|7L4IOU||JAPAN||This is my first FMT entry. CW was readable at Noon time here in Tokyo under low SSN. Thank you for the chance !|
|K1GGI||EMA||K5CM peaked 20over on 20, decent signals all around. The 80m A ant may have been slightly better than B. Lots of spread on W6OQI. Couldnt stay awake for 160. Thanks for the fun.|
|K5CM||OK||Signal was good on 40 meters but the Doppler spread made it very difficult to find the real frequency. Lots of QRN from the very nearby storms. Thanks Marvin.|
|K6APW||EB||Noise buried 160M, be lucky my measurement within 5 Hz. The 80M signal was totally NIL. Thanks for fine efforts by both stations.|
|K6HGF||LAX||No copy from K5CM on 7:45PM(PDT) run. Heard K5CM at approx. 8PM, but with another station calling CQ right on top, so unable to copy.|
|K6OQK||LAX||I had intended to be home several hours before the start of the FMT's to setup. As It turned out I didn't arrive home until about 10 minutes before the start and had to set up in a rush. I had several cockpit problems and a problem with getting SL to run properly - also a cockpit problem. As a result I missed Connie's first 3 runs (RATS!!!). I got things straightened out just as his 80-Meter run finished. Anyway, I was able to measure both of Marv's runs and Connie's 160-Meter run. The 160-Meter run was right at the noise but once I found the signal I was able to home in and then use the 20 Hz filter, which of course helped a lot. Thanks to Connie, Pam and Marv for an enjoyable, if not hectic round of FMT's. Burt, K6OQK|
|K7TT||WWA||My technique this time was lousy. Only hand notes to go by. Messed up my Spectrum output file data. But... Good Signals. No copy on 80M/80M_b as you weren't there till later I discovered in your email too late. Always is intense but it is always fun. Thanks.|
|KA1BQP||RI||First FMT. Thanks to John WA1ABI for the help in getting set up. Freq Std IFR1500S, Rig ICOM IC756PRO, Ants 2 Ele SteppIR, dipole.|
|KD2BD||NNJ||Connie, thanks for dodging the lightning bolts to conduct this FMT! Your 80-meter signals suffered from moderate QRN and QSB that certainly affected the accuracy of my measurements. Signals during the first 80-meter transmission may have been slightly stronger into New Jersey.|
|KØMZ||KS||Thank you Connie and Marvin. All signals on 40 and 80 were good in KS. The signals on 20 were very weak off the side of the beam up North. I used an Atlas 210X for the receiver, TR-7 for local reference signal, and a Heath IM-4100 counter that drifts. The counter is hard to keep in tune. Next time I hope to have an HP10544A OCXC run my counter for better accuracy.|
|N3FG||EPA||Good copy on 20M both east and west. Very heavy QRN on 40M. Couldn't hear the 80M signal. Lots of QRN.|
|N5DM||STX||Kenwood TS-480 & DigiPan. K5CM 80m: Antenna "A"=S9+20db, Antenna "B"=S9+10db.|
|N5LUL||WTX||Still learning... I'll get things dialed in one of these days. Brad|
|N7EP||WWA||All FMT signals were noisy with lots of doppler shift except the K5CM 80 M which I didn’t hear. I copied WWV without the doppler and noise on all frequencies below 15 MHz which I can't explain. The 40 M run from W6OQI was right at sunset here in Seattle and the signal moved up 1 Hz in the three minute key down period so the path must have been getting shorter. I’m anxious to find out the actual frequency. All my entries tonight were guesses and I’ll feel good if I get within one Hz|
|N8OB||OH||Antenna "B" on 80M was much better here in OH. Could not hear anything on Antenna "A". Good signals on 20 and 40. Much fun as usual.|
|VE2IQ||ON||ARUN-80 was S9+10, BRUN-80 was S9+5 Lots of QRN, QSB. ARUN-20 was about 25 dB stronger than BRUN-20. Midnite (OK) way past my bedtime! Tnx|
|W0PHD||MN||more QSB than usual and QRN also made it interesting. The first 80 meter signal was the stronger and less QSB then the higher frequency one. Hope I didn't mess up and add instead of subtract like the last test. My clock must have been off when I did not hear anything at the posted 9:45 pm cdt but nice signal at 10:00 pm. I just might have to start copying the cw for any messages...|
|W1PW||AZ||Didn't hear K5CM on 80M; learned too late that it had been delayed. Moderate Doppler on K5CM 40M signal. Lots of Doppler on both 40 and 80 WC signals. Thanks Connie and Marvin for running these tests. 73!|
|W2FD||WPA||Did not hear K5CM on 80 meters. Noisy conditions for both of W6OQI transmissions. Thanks again K5CM and W6OQI for the tests.|
|W3JW||VA||Signal strengths and Doppler spread were about average here. the K5CM 80 meter A signal was S9 and the 80 M B signal was S7. Static peaks were well above those numbers so my conficence in those numbers is less than "high". I didn't see the email about the 160 meter run until Thursday morning; where are all those long delayed echoes when I need them? 73 and Tnx to you and Burt!|
|W6IHG||VA||I finally arranged my schedule to catch up with your FMTs this year. Thought I had screwed up 80m, could not find your signal. I shut down too early. I was puzzling about the way the 40m signal had split into frequency bands over about 0.8 Hz. Your winds might help explain that. Thanks for making this fun available to us. Jerry, W6IHG|
|W6OQI||LAX||K5CM 20 meter signal was S8 to S9 at my QTH near Los Angeles. 40 meter signal was about S8. The first 80 meter signal was S9 and the second 80 meter signal was S9+10. All signals had QSB. There was a lot of Doppler on 80 and 40 meters. Doppler seemed minimal on 20 meters. The 160 meter signal was too weak to measure. I thought I copied "5CM" once but maybe it was my imagination. Marvin, W6OQI|
|W9TJ||IL||20 doppler as wild. I found 0.1 hz difference between E ad W headings. 40 sigs S9+30, QRN 7 - 9. On 80 I assume 80M is first go and 80M_b second try. 80 sigs S9+10 to +20 QRN S7 with lots phase reversals. 160 sigs were great S9+20 on 80 mtr dipole and QRN S-6. Some QSB on 160. West coast 40 sigs S9 QRN 7 to 9+10 doppler wild. WC 80 sigs S8 with QRN 7 to 9+10. Thanks to all and to Connie for the 160 add on.|
|W9ZB||IN||The two 80M ant sigs about were equal strength, although QSB masked differences for me. West Coast weaker, with even more QSB. 160 sig was very strong & band appeared otherwise unoccupied on CW. A fun run, except for the late bedtime here in the EDT zone.|
|WA1ABI||RI||Lots of static but fairly good sigs. Very wide spread here on Marvin's 40m run. Connie's 80m 'A' signal better S/N than 80m 'B'. Tnx Connie and Marvin.|
|WA2DVU||SNJ||Could not hear 80m - heavy qrn. Results are for first 20m transmission that was 10/9 - second transmission was S5. Thanks again Connie. 73, Bill, WA2DVU Cape May, NJ|
|WA4FJC||VA||Nothing heard on 80 M. had many "cockpit" problms so hope to do better next time. HP 3586B with triband beam / dipole antenna. 73 Gordon|
|WB9FIP||WI||Conditions certainly were not a "slam dunk" on any band! Your 80M "A" antenna was just about 1.8 dB better than the "B" version here in Wisconsin. Thanks for the fun.|
K5CM 160 meter readings (1846070.479 Hz)
K5CM 80-A meter readings (3578426.283 Hz)
K5CM 80-B meter readings (3578427.327 Hz)
K5CM 40 meter readings (7078537.558 Hz)
K5CM 20 meter readings (14058142.026 Hz)
W6OQI 80 meter readings (3567002.355 Hz)
W6OQI 40 meter readings (7067002.254 Hz)
Hear a brief audio snippet of Marvin's 40 meter signal.
Hear a brief audio snippet of Connie's 40 meter signal as copied by WA1ABI
Spectrograph of K5CM'S 20 meter signal as copied by 7L4IOU
Spectrograph of Marvin's 40 meter signal as copied by K5CM
Spectrograph of W6OQI's 40 meter signal as copied by N7EP
comment from Earl, N7EP: It was at Sunset here in Seattle, and the signal shifted up 1 Hz in 3 minutes.
My photography is a little shaky, but it still shows the nearby storm.
Its completely dark out except when the lighting was striking.
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 Tokyo Hy-Power amp running 500 to 600 watts out on 160, 80, 40, 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.
I typically see considerably less than 1 mHz difference at 10 Mhz when comparing two Z3801's over a 10 second period.
160 - Dipole slopping down from 140 foot point on tower (favors East, West and North)
80A- Dipole - A 3.5 foot cage made from four wires in a box shape, sloping down from South to North (favors East, West, and North)
80B- Dipole at about 65-70 degree slope (near vertical).
40 - Standard Dipole hanging between two 80 foot towers. (favors East, West)
20 - 4 element SteppIr
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.