K5CM FMT
September 06, 2007 Results
30M run 8:30 PM CDT 40M run - 9:00 PM CDT 80M run -9:30 CDT
West coast run - 10:00 PM CDT
K5CM TX Frequency :
80 Meters A - 3555501.5 Hz
80 Meters B - 3555603.747 Hz
Difference - 102.247 Hz
40 Meters - 7055841.677 Hz
30 Meters - 10115074.772 Hz
W6OQI TX Frequency:
40 Meters - 7065545.645 Hz
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Sort by best 80 meter difference reading (102.247 Hz)
AUDIO RF
| VE2IQ | ON | 102.247 | 0.000 | 0.00E+00 | 0.00E+00 | |
| W3JW | VA | 102.247 | 0.000 | 0.00E+00 | 0.00E+00 | |
| W6OQI | CA | 102.247 | 0.000 | 0.00E+00 | 0.00E+00 | |
| WB9FIP | WI | 102.247 | 0.000 | 0.00E+00 | 0.00E+00 | |
| W0PHD | MN | 102.248 | 0.001 | 1.27E-05 | 3.66E-10 | |
| K6OQK | CA | 102.245 | -0.002 | 1.96E-05 | 5.62E-10 | |
| WA1ABI | RI | 102.245 | -0.002 | 1.96E-05 | 5.62E-10 | |
| VE3OAT | ON | 102.244 | -0.003 | 2.93E-05 | 8.44E-10 | |
| N5PWG | TX | 102.240 | -0.007 | 6.85E-05 | 1.97E-09 | |
| KC0VSJ | MO | 102.210 | -0.037 | 3.62E-04 | 1.04E-08 | |
| WB0LXZ | KS | 102.187 | -0.060 | 5.87E-04 | 1.69E-08 | |
| N8OB | OH | 102.100 | -0.147 | 1.44E-03 | 4.13E-08 | |
| K8JQ | WV | 102.077 | -0.171 | 1.67E-03 | 4.79E-08 | |
| W5UFZ | AZ | 101.962 | -0.285 | 2.79E-03 | 8.01E-08 | |
| KM1P | MA | 117.410 | 15.163 | 1.29E-01 | 4.26E-06 |
Sort by best 40 meter reading ( 7055841.677 Hz)
| WA1ABI | RI | 7055841.639 | -0.038 | 5.39E-09 | |
| W1PW | AZ | 7055841.552 | -0.125 | 1.77E-08 | |
| VE3OAT | ON | 7055841.821 | 0.144 | 2.04E-08 | |
| N8OB | OH | 7055841.9 | 0.223 | 3.16E-08 | |
| W3JW | VA | 7055841.931 | 0.254 | 3.60E-08 | |
| WB9FIP | WI | 7055841.971 | 0.294 | 4.17E-08 | |
| W5UFZ | AZ | 7055841.383 | -0.294 | 4.17E-08 | |
| WB0LXZ | KS | 7055841.977 | 0.300 | 4.25E-08 | |
| K8JQ | WV | 7055842.04 | 0.363 | 5.14E-08 | |
| N5PWG | TX | 7055842.05 | 0.373 | 5.29E-08 | |
| K6APW | CA | 7055841.2 | -0.477 | 6.76E-08 | |
| W6OQI | CA | 7055841.033 | -0.644 | 9.13E-08 | |
| K6OQK | CA | 7055841.024 | -0.653 | 9.25E-08 |
Sort by best 30 meter reading ( 10115074.772 Hz)
| W3JW | VA | 10115074.734 | -0.038 | 3.76E-09 | |
| K8JQ | WV | 10115074.720 | -0.052 | 5.14E-09 | |
| VE3OAT | ON | 10115074.828 | 0.056 | 5.54E-09 | |
| WA1ABI | RI | 10115074.614 | -0.158 | 1.56E-08 | |
| N8OB | OH | 10115074.980 | 0.208 | 2.06E-08 | |
| K6YAZ | CA | 10115074.528 | -0.244 | 2.41E-08 | |
| K6OQK | CA | 10115074.524 | -0.248 | 2.45E-08 | |
| W6OQI | CA | 10115074.518 | -0.254 | 2.51E-08 | |
| W1PW | AZ | 10115075.089 | 0.317 | 3.13E-08 | |
| WB9FIP | WI | 10115074.214 | -0.558 | 5.52E-08 | |
| WB0LXZ | KS | 10115074.120 | -0.652 | 6.45E-08 | |
| W5UFZ | AZ | 10115074.020 | -0.752 | 7.43E-08 | |
| K6APW | CA | 10115073.900 | -0.872 | 8.62E-08 |
Sort by best West Coast 40 meter reading ( 7065545.645 Hz )
| K6OQK | CA | 7065545.640 | -0.005 | 7.08E-10 | |
| W0PHD | MN | 7065545.520 | -0.125 | 1.77E-08 | |
| VE3OAT | ON | 7065545.790 | 0.145 | 2.05E-08 | |
| KM1P | MA | 7065545.500 | -0.145 | 2.05E-08 | |
| W1PW | AZ | 7065545.829 | 0.184 | 2.60E-08 | |
| WA1ABI | RI | 7065545.442 | -0.203 | 2.87E-08 | |
| W5UFZ | AZ | 7065545.430 | -0.215 | 3.04E-08 | |
| K8JQ | WV | 7065545.350 | -0.295 | 4.18E-08 | |
| KC0JSJ | MO | 7065545.330 | -0.315 | 4.46E-08 | |
| W3JW | VA | 7065545.305 | -0.340 | 4.81E-08 | |
| K5CM | OK | 7065546.001 | 0.356 | 5.04E-08 | |
| N5PWG | TX | 7065546.140 | 0.495 | 7.01E-08 | |
| WB9FIP | WI | 7065545.128 | -0.517 | 7.32E-08 | |
| WB0LXZ | KS | 7065551.710 | 6.065 | 8.58E-07 |
Comments
| K5CM | OK | Marvin's signal was strong enough, but the Doppler turned the signal into a snake wiggling up the screen again this week. Thanks for doing the WC FMT run |
| K6APW | CA | 30M S6, 1 to 3 second period QSB, 40M S7 |
| K6OQK | CA | Connie,all signals were pretty stable with the exception of 80-Meters. Spectrum Lab crashed on me just as Marv started his WC FMT so I had to fall back to the 3586B/3336B combination only. A good time was had by all on the WC. Again, thanks to Pam for loaning you to us. |
| K6YAZ | CA | Good steady carrier; some difficulty at first because of QRM, but 20 Hz filter took care of that. Used marker provided by 3336 generator and measured delta. |
| K8JQ | WV | |
| KC0VSJ | MO | Couldn't hear you at all on 30M, 40M was so strong I wasn't prepared to insert a hot enough pilot. 80M was very weak, I missed the call up but the 100hz two tone was found buried in the noise and was usable. Very fine signal from West Coast tonight. |
| KM1P | MA | This will be my last Sudden FMT for a few weeks ... I have to make a sudden move" to a new QTH" |
| N5PWG | TX | This was my first attempt to measure the difference in frequency of the two-signal test using AM mode.I was surprised to see the lack of a sharp peak on the spectrum; previously, I measured the frequency of each signal (in CW mode) and subtracted to get the difference. |
| N8OB | OH | 80 meters was weak and quite noisy this evening. |
| VE2IQ | ON | Used TS850 AM mode. Hard to find: audio way down at 100 Hz, got 3 min. Used flywheel to measure average freq |
| VE3OAT | ON | Some weird Doppler on the 40 m K5CM signal. Still using the old Sulzer freq standard, manually adjusted with reference to WWVB. Thanks for the FMT. |
| W0PHD | MN | did not read the FMT bulletin until 9:20PM CDT no warm up time again too late for some of the tests and my receiver was drifting on the two tone test. Suggestion - drop e-mail to regular participants to look at your web page especially when day change. It was just luck that I even looked at the web page...Thanks again. Wally" |
| W1PW | AZ | |
| W3JW | VA | Conditions were average to above average with QRN . Doppler effects were moderate but quite noticeable (both on the test signals and WWV). The the two frequency AM mode" waterfall display was nowhere near as clean and quiet as last week." |
| W5UFZ | AZ | K5CM signals vy strong all bands. W6OQI 5-6-9. Tnx fer test....... |
| W6OQI | CA | 40 meters provided the best signal tonight. 30 and 80 meters were good but not as good as 40 meters. Over all signals are better than in the past few weeks. The shorter days are helping. Also it was nice to have normal 120 VAC line voltage tonight. The old Viking 1 transmitter keying was OK tonight for the west coast FMT. |
| WA1ABI | RI | Conditions were good tonight, but heavy SSB QRM on W6OQI's 40m West coast signal. Thanks Connie & Marvin. 73. |
| WB0LXZ | KS | New timebase - bill. |
| WB9FIP | WI | Very tough 30 meter run. Lots of Doppler tonight: over -0.4 Hz 15 minutes prior to 30 meter run. Thanks again for the tests. |
_____________________________________________________________________________
Audio of K5CM recorded by VE2IQ with his TS-850 in AM mode.
Audio of W6OQI recorded by K5CM
Audio of K5CM recorded by K6OQI on 80 meters. (I passed the file thru a 300 Hz filter to remove some of the noise)
Screen capture of W6OQI by K5CM. My marker is at zero (7065539 Hz).
Participants are refining their skill on the 80 meter difference measurement, with four stations hitting the "FMT nail" on the head, and more than half reading to better than .01Hz ....... Good going guys!!!
Doppler on 40 meters seemed to be giving everyone problems. Only one station copied K5CM to better than .1Hz and evidently everyone had the same problem with W6OQI, with only Burt coping to better than .1Hz. Burt is only 8 miles from Marvin so we expect him to turn in a close reading with the ground wave signal.
Stations copying K5CM 80 meter difference run to .01Hz or better
VE2IQ* WB9FIP*, W6OQI*, W3JW*, W0PHD, K6OQK, WA1ABI, VE3OAT, N5PWG
*(zero error)
Stations copying K5CM 40 meter run to .1Hz or better
WA1ABI
Stations copying K5CM 30 meter run to .1Hz or better.
W3JW, K8JQ, VE3OAT
Stations copying W6OQI "West coast run" to .1Hz or better.
K6OQI
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 Drake L4B at 300 watts output except on 30 and 17 meters where the power is 75 watts. 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.
Antennas:
80 - Cage Dipole (favors East, West, and North)
40 - Dipole (favors East, West)
30 - Dipole
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.
Connie
K5CM
