K5CM FMT - January 19, 2011 Results
| TX Frequencies | ||
| K5CM | W6OQI | |
| 160, | 1846266.612 | |
| 80M | 3578262.718 | 3567623.528 |
| 40M | 7056999.916 | |
| 20M | 14058632.277 | |
Stations submitting readings .1 Hz or better on all possible bands, ranked by average error
| Call | Section | Grid | Error in PPX |
| W1PW | AZ | DM33 | 6.04E-09 |
Stations submitting readings 1 Hz or better on all possible bands, ranked by average error
| Call | Section | Grid | Error in PPX |
| W1PW | AZ | DM33 | 6.04E-09 |
| WA1ABI* | RI | FN41jp | 1.05E-08 |
| KM6QX | EB | CM87 | 1.51E-08 |
| W6IHG | VA | FM09tb | 1.82E-08 |
| AB4RS | VA | FM18hw | 2.01E-08 |
| VE3OAT* | ON | FN25eg | 2.06E-08 |
| K9KK | OK | EM15 | 2.38E-08 |
| W3JW* | VA | FM17TN | 2.86E-08 |
| N7AIG | AZ | DM42ng | 3.23E-08 |
| W9TJ* | IL | EM48 | 3.87E-08 |
| W9ZB | IN | EM69xp | 5.18E-08 |
| K6BZZ* | AZ | DM33xb | 6.76E-08 |
| N5DM* | STX | EL29fs | 6.87E-08 |
| K6APW | EB | CM87uv | 9.18E-08 |
*These stations also made this list in the last K5CM FMT (October)
Stations submitting readings 1 Hz or better on all possible bands, in last two FMT's, ranked by average error
| Call | Section | Grid | Error in PPX-Jan | Error PPX -Oct | Avg PPX |
| W3JW | VA | FM17TN | 2.86E-08 | 1.89E-08 | 2.37612E-08 |
| VE3OAT | ON | FN25eg | 2.06E-08 | 3.75E-08 | 2.90662E-08 |
| WA1ABI | RI | FN41jp | 1.05E-08 | 4.77E-08 | 2.91308E-08 |
| W9TJ | IL | EM48 | 3.87E-08 | 3.34E-08 | 3.60509E-08 |
| K6BZZ | AZ | DM33xb | 6.76E-08 | 6.69E-08 | 6.72395E-08 |
| N5DM | STX | EL29fs | 6.87E-08 | 7.27E-08 | 7.07051E-08 |
A look at all readings 10 millihertz or better:
| Call | Section | Grid | TX Frequency | Measured Freq | Error in Hz | Error in PPX |
| K5CM 160M | ||||||
| AB4RS | VA | FM18hw | 1846266.612 | 1846266.612 | 0.000 | 0.00E+00 |
| K5XL | NTX | EM12kp | 1846266.612 | 1846266.611 | -0.001 | 5.42E-10 |
| W9TJ | IL | EM48 | 1846266.612 | 1846266.610 | -0.002 | 1.08E-09 |
| W3JW | VA | FM17TN | 1846266.612 | 1846266.616 | 0.004 | 2.17E-09 |
| K9KK | OK | EM15 | 1846266.612 | 1846266.607 | -0.005 | 2.71E-09 |
| K5CM 80M | ||||||
| W5EMC | STX | EM10 | 3578262.718 | 3578262.720 | 0.002 | 5.59E-10 |
| K5XL | NTX | EM12kp | 3578262.718 | 3578262.724 | 0.006 | 1.68E-09 |
| K5XL | NTX | EM12kp | 3578262.718 | 3578262.724 | 0.006 | 1.68E-09 |
| K5CM 20M | ||||||
| W1PW | AZ | DM33 | 14058632.277 | 14058632.283 | 0.006 | 4.27E-10 |
It seemed signals were about average for this FMT. Not sure what was going on with Marvin's 40 meter signal as many reported no copy, and the number of readings were down considerably compared with the rest for his 40 meter signal. Other than QRM, his signal was good here in Oklahoma.
W1PW had a good night, with all 5 of his readings being within .1 Hz of the TX frequency. Also K6APW made a good showing on all five bands with his modest setup.
Thanks to all who participated. The best showing yet for a K5CM FMT!!!
Comments:
| VE3GTC | ON | FN25ig | This is my first entry and I am just starting to come to terms with my equipment and how best to use in one of these FMT's. At the moment I am calibrating my signal generator against CHU and then comparing a local signal against the "on air signal", doing some math and hope I added or subtracted right to get my result. The 20 meter run worked out time wise, the other frequencies are too late in the evening so I couldn't measure these this time around. This was fun and will do it again and hopefully will be better the next time. Cheers, Graham ve3gtc near Ottawa Canada |
| W0HBK | IA | EN-42 | No W6OQI 40M signal in Cedar Rapids. 80M 599. FT-920 TCXO direct frequency measurement. Thanks for doing the FMT! Neale |
| W0PHD | MN | EN18oe | 20 mtrs weak both directions and lot of multipath (doppler) no signal heard from W6OQI on 40 meters but 80 meters strong. |
| N2GL | OR | CN85ko | Had Spectrum Lab averaging set too long to completely home in, and my half-way-in audio cable failed on me for two of the runs. I'll try again next time! |
| w5sxd | STX | el29ep | 20m dipole/flex5000/k1jt fmt routines |
| W2VQS | OK | EM15jg | Used a Flex 3000 radio, FLdigi, and a hand calculator. W6OQI was weak and readable at times with deep fades. |
| W6OQI | LAX | DM04vf | K5CM signal nice and strong on both 20 meter FMTs but had a wide doppler spread of .281 Hz. K5CM 80 meter signal was strong but with a doppler spread of .254 Hz. What's a fellow to do? It is still fun trying. K5CM signal not heard on 160 meters here in Southern California. Marvin, W6OQI |
| W9ZB | IN | EM69xp | 20M and 40M too weak & in the noise here to get good resolution. All other sigs were S9 or better. Very enjoyable; thanks! |
| W1HKJ | AL | EM64qv | 20 meter signal had a lot of rapid fading, Signal about S3. 80 meter signal was +30 dB. Transceiver TT-516 with TCXO, calibrated before and after to WWV. Signal detection and analysis using fldigi and gnumeric. |
| K0OD | MO | EM48 | Couldn't get home from work in time for the 20 Meter transmissions. W6OQI was too weak on 40 to get a reliable reading. Used only a stock Flex-5000A. No additional software or hardware. Thanks for your efforts. Jeff K0OD |
| K4MP | WWA | CN88 | Just a spot on a Elecraft K3. |
| WA1ABI | RI | FN41jp | Good signals on all freqs except for W6OQI 40m, which was light copy. Surprising amount of static QRN for January. Lots of Doppler, no surprise there. Tnx Connie and Marvin. |
| N7AIG | AZ | DM42ng | 20M tests - Murphy hits big time... computer crash halfway thru, new K3 in Diversity mode (DON'T DO THIS!), first time hearing FMT call & forgot to turn on reference generator, K3 CW in LSB by default (backwards). So recover WAV recording, patch up header by hand, look at one minute of data remaining, try to reverse engineer all the backwards stuff, and wing it for 14058631.304 (??). The others were good. But 160M was really tough reception on my 37m dipole + tons of QRN. Couldn't even see the signal in the waterfall, but I caught it in square-law detection mode. My first FMT, and looking forward to many more. |
| W5EMC | STX | EM10 | 20M S1,3578 S9,1846 S3 Hum on tone,OQI 40M no sig,80M weak SS not logged Enjoyed the FMT - Bob |
| KM6QX | EB | CM87 | Used a Flex-1500 with GPSDO 10MHz reference oscillator and Fldigi to measure CWU Pitch Tone. System calibrated with RF signal generator referenced to same GPSDO. All signals very strong, even K5CM's East Beam here in northern CA. de John Stuart |
| N7EP | AZ | DM43dj | All signals strong into AZ. Doppler bad except on 160M. Almost 2 Hz on 80M from K5CM. My calibration signal from 2.5 MHz WWV was very stable throughout the FMT. As usual, I used a dart board for added precision. Thanks Connie and W6OQI, I find the FMT's to be great sport. Earl in Mesa, AZ |
| wi3z | EPA | fn20 | |
| WA2USJ | NLI | FN30bq | I keep on trying, conditions fair to good,rig TS570S with TCXO. |
| WA4FJC | VA | FM08lf | Thunderbolt GPS reference, HP 3586B and 80 M dipole. Nothing heard on the 40 M west coast run. Missed the 20 M run. Signals heard were pretty good. Keep up the good work. 73 Gordon |
| KG0HY | NE | EN20 | Signals, fair to good, but K5CM's 20M signal was -120db. Receiver is a WinRadio 313, calibrated to WWV. Antenna is 100 feet long, off center feed dipole, up 20 feet. De KG0HY, Casey |
| KØMZ | KS | EM28ix | Due to an error on my part, I only got in on the last test. Marvin's 80 Meter signal had a bit of QSB and doppler. Receiver used is Hallicrafters SX-73. Transfer oscillator is Drake TR-7. Counter is Heathkit clocked with HP 10544A oven oscillator. All tuning measurements by ear. |
| WA2DVU | SNJ | FM29nb | Heavy QRM on 80, Good sigs on 20 and 160. 160 did not have much doppler shifting. Thanks Connie. |
| N9GC | MN | EN35fc | FT1000MP MkV with FlDigi. |
| KD2BD | NNJ | FN20xd | The Kp-index was between 0 and 1 during the FMT, providing good signal levels and slow, shallow fading. WWVB was very strong. Connie's 160 meter signal was surprisingly good, and Marvin's 80-meter signal was one of the best I've heard in quite some time. Frequency readings were taken at 10 second intervals and averaged. Maximum frequency deviation was observed on 160 (0.2625 Hz pk-pk). Minimum occurred during Marvin's 80-meter run (0.2 Hz pk-pk) -- quite the opposite of what I would have expected. |
| WB3AKD | VA | FM19CE | Not too confident in my readings this time as I tried a new phase measurement technique and mashed a few incorrect buttons causing much flailing about, but ultimately, still an interesting experience, always an adventure trying something new. Missed the 20M run due to schedule. K5CM signals were pretty good considering the beverage antenn is pointed toward N. Africa. No copy on west coast 40M signal but 80M was OK. As always great fun, outside the fumble fingering on the panel. |
| K6BZZ | AZ | DM33xb | Good signals all bands. Weakest was 160. A small difference in frequency observed here between Connie's east beaming and west beaming 20 meter signals. Interesting. Thanks to all involved for running the tests. Great fun and challenging. |
| AA8K | MI | EN82sx | Peak signal levels received in dBm: K5CM 20 M no signal, 80M -79, K5CM 160M -89, W6OQI 40M -98, W6OQI 80M -97, WWV 2.5 MHz -82, WWV 5 MHz -63, WWV 10 MHz no signal. Antenna: ground-mounted vertical 20 meters high. I used only Open HPSDR, Thunderbolt GPSDO, and Spectrum Lab. I offset the HPSDR's frequency about 300 Hz to make a tone with its BFO, and used Flex Radio's PowerSDR to make a wave file. I played the wave file back and ran Spectrum Lab, noted the offset from the HPSDR frequency dial. |
| N5DM | STX | EL29fs | TS-480S w/Digipan v2.0. |
| N5LBZ | MS | EM53qv | Signals were not very strong. Connie's 20M signal was barely readable on the first run and by the time I got him tuned in the run was over...but his signal increased dramatically while he was making the second callup..Maybe he beamed West first...no copy at all on W6OQI on 40. |
| K9KK | OK | EM15 | Lowest Doppler shift I've experienced. Good signal strengths. I have no excuses this time!!! Used a GPS disiplined reference signal generator. Spectrum Lab then measured the difference between that and FMT signal. |
| K7TT | WWA | CN87wl | Good signal here in Washington ... even better with antenna in this direction. |
| K6DSW | LAX | DM04te | My first try at this. I just used the CW spot fuction on my Elecraft K3 with "FINE" frequency readout selected. I only have the standard timebase, and I did no additional calibration. The results are unlikely to be within 10 Hz. |
| K6APW | EB | CM87uv | Thanks to Connie and Marvin. Good signals except 160M which was at my noise level and below. |
| VE3OAT | ON | FN25eg | W6OQI was very weak on 40 m so my data there wasn't very good in either quality or quantity HI, but 80 m was fine, as usual. K5CM good on all bands. Thanks to you both for giving us this challenge. |
| N3FG | EPA | FM29 | 20M pretty good. The other bands were noisey and had some QRM. Could not hear W6OQI on 40M. Used my trusty IC-7200, Spectran, WWV, and a 40M dipole except for 20M where I used a 2 el yagi. |
| W9TJ | IL | EM48 | Connie's 20 eastbound was very weak with slight improvement for westbound. Measurements were spread over one Hz. It was sundown time here to the minute. K5CM boomed in S9++ on 80 and 160 with doppler shift on both. W6OQI very weak on 40 and rode well under a local S9 hash on 80. I again observed a difference of 0.1 Hz between the 20 meter signals with westbound being the higher. My thanks to you folks for making the test possible. 73 Tom |
| WBØLXZ | KS | EM27pk | Homebrew GPS with OCXO, HP3586B, HP3335A, Spec Lab. 80m dipole. I couldn't find the 40M signal. I chose the higher frequency edge of each doppler-smeared signal instead of the center as I chose in November. Great fun. Thanks. - bill |
| N5JOA | NFL | EM70vk | Missed 20 meter FMT. Direct frequency measurement. Used RF Space SDR-IQ and Spectra Vue Software on T-20 Thinkpad. Calibrated to WWV 10 Mhz. after 90 minute warm up. Antenna is 260 foot dipole with open feed line. Strong signals (S-9) from K5CM. Signals from W6OQI were at my noise level (appx. S-3). |
| AB4RS | VA | FM18hw | All transmissions were loud and clear except W6OQI 40m, which was almost audible, but SpectrumLab DSP pulled it out of the noise. Used the delta reference methid using a HP 3336C locked to a Trimble Thunderbolt to inject the reference signal. Used SpectrumLab to analyze the data.Enjoyable as always. |
| K5XL | NTX | EM12kp | |
| W1PW | AZ | DM33 | |
| VE2IQ | ON | FN15nt | K5CM 20-M east: RST599, west: RST519, freq seemed higher here while beaming west No copy on W60QI 40-M run Thanks to all |
| W6IHG | VA | FM09tb | Using Delta Reference method with HP3336 with Thunderbolt and FT-2000. Really different results on 20m East and West. Distributions hardly overlap. Ended up estimating on a common cluster? I have seen that before where the "truth" was not even in my data? Found out why the FT2000 oscillator drifts up and then down - it is the fan cooling and then shuting off for the oscillator to heat soak again. Have to fix that - it is almost 5 Hz change. |
| K5XL | NTX | EM12kp | FT-1000MP with TCXO calibrated to local GPSDO AM station on 1270 Khz. Computer sound card calibrated by tuning AM station 500 hz above in LSB on VFO-A and 500 hz below in USB on VFO-B while in dual receive, then adjusting SpecLab 'sample rate correction' for the same amount of error on each sideband tone. Tuned each FMT signal for approx 500 hz tone in USB, measured tone using SpecLab and combined it with the VFO frequency reading. I wasn't available for the 20M test, and the 40M test from W6OQI was very weak. Lots of Doppler on all signals except 160M. Thanks to Connie and Marvin. |
| WD9GLR | IN | EN61gm | second attempt at FMT...857-d, Spectran, coordinating signals with WWV and CHunable to copy the 160 signals and the W6 signal on 80..the W6 signal on 40 was just audible above the S7 noise level..surprised not able to copy the 160 signal despite an "open" band at my end..thanks for the opportunity... |
| K1GGI | EMA | FN41wr | Got started late and fumbled around to capture anything on K5CM 20m run, chasing a drifting BFO. Settled down for others. Couldnt hear W6OQI on 40, but saw something that looked like a carrier in SL. QRN kept the SL baseline jumping. Thanks guys. |
| W3JW | VA | FM17TN | Good signals across the board tonite with Marvin's 80M signal being particularly strong. Plenty of doppler spread to go around with the 40 and 80 meter signals being "the most devilish". Tnx fer another FB FMT. |
| AF9A | IN | EM69wv | Connie, good signals on 80 and 160. In the noise on 20. Thanks! |
| W4UK | SC | EM93 | No copy on the 20 M sig here in SC, Connie. The others were weak and wavering, but I made a guess anyway. Hope it was a good guess. Used my Thunderbolt stabilized Flex-5000a, fldigi, and excel. Thanks for the tests. Jerry W4UK |
| K6IQL | KS | EM28nq | Thanks again for another FMT. No signals heard here in Kansas on 40 M. Murphy lives and introduced a 60 Hz ground loop on the coax from my Rb source to the RF reference sign gen. Must have been the 5 KW heater on the same sub panel. Made small deviation 60 Hz FM on Rf reference gen. So results will be interesting. Can it be averaged out? Equip - 75A4, Fluke sign gen, Rb reference, and Spectrum Lab. 73 to all and thanks again for another FMT - John |
| K5CM | OK | EM25 | Marvin had a good signal on 40 meters, but Strong QRM started just as he went Key Down. No, problem with 80 meters. |
K5CM 160 Meters
| Call | Section | Grid | TX Frequency | Measured Freq | Error in Hz | Error in PPX |
| AB4RS | VA | FM18hw | 1846266.612 | 1846266.612 | 0.000 | 0.00E+00 |
| K5XL | NTX | EM12kp | 1846266.612 | 1846266.611 | -0.001 | 5.42E-10 |
| K5XL | NTX | EM12kp | 1846266.612 | 1846266.611 | -0.001 | 5.42E-10 |
| W9TJ | IL | EM48 | 1846266.612 | 1846266.610 | -0.002 | 1.08E-09 |
| W3JW | VA | FM17TN | 1846266.612 | 1846266.616 | 0.004 | 2.17E-09 |
| K9KK | OK | EM15 | 1846266.612 | 1846266.607 | -0.005 | 2.71E-09 |
| W5EMC | STX | EM10 | 1846266.612 | 1846266.600 | -0.012 | 6.50E-09 |
| AA8K | MI | EN82sx | 1846266.612 | 1846266.600 | -0.012 | 6.50E-09 |
| AF9A | IN | EM69wv | 1846266.612 | 1846266.625 | 0.013 | 7.04E-09 |
| N7AIG | AZ | DM42ng | 1846266.612 | 1846266.599 | -0.013 | 7.04E-09 |
| W6IHG | VA | FM09tb | 1846266.612 | 1846266.598 | -0.014 | 7.58E-09 |
| W1PW | AZ | DM33 | 1846266.612 | 1846266.632 | 0.020 | 1.08E-08 |
| K1GGI | EMA | FN41wr | 1846266.612 | 1846266.587 | -0.025 | 1.35E-08 |
| N7EP | AZ | DM43dj | 1846266.612 | 1846266.586 | -0.026 | 1.41E-08 |
| KM6QX | EB | CM87 | 1846266.612 | 1846266.579 | -0.033 | 1.79E-08 |
| VE2IQ | ON | FN15nt | 1846266.612 | 1846266.576 | -0.036 | 1.95E-08 |
| WA1ABI | RI | FN41jp | 1846266.612 | 1846266.650 | 0.038 | 2.06E-08 |
| VE3OAT | ON | FN25eg | 1846266.612 | 1846266.574 | -0.038 | 2.06E-08 |
| WB3AKD | VA | FM19CE | 1846266.612 | 1846266.564 | -0.048 | 2.60E-08 |
| K6IQL | KS | EM28nq | 1846266.612 | 1846266.535 | -0.077 | 4.17E-08 |
| WBØLXZ | KS | EM27pk | 1846266.612 | 1846266.526 | -0.086 | 4.66E-08 |
| WA4FJC | VA | FM08lf | 1846266.612 | 1846266.700 | 0.088 | 4.77E-08 |
| N5DM | STX | EL29fs | 1846266.612 | 1846266.700 | 0.088 | 4.77E-08 |
| KD2BD | NNJ | FN20xd | 1846266.612 | 1846266.513 | -0.099 | 5.36E-08 |
| WA2DVU | SNJ | FM29nb | 1846266.612 | 1846266.500 | -0.112 | 6.07E-08 |
| N3FG | EPA | FM29 | 1846266.612 | 1846266.500 | -0.112 | 6.07E-08 |
| w5sxd | STX | el29ep | 1846266.612 | 1846266.727 | 0.115 | 6.23E-08 |
| W9ZB | IN | EM69xp | 1846266.612 | 1846266.483 | -0.129 | 6.99E-08 |
| W0PHD | MN | EN18oe | 1846266.612 | 1846266.471 | -0.141 | 7.64E-08 |
| K0OD | MO | EM48 | 1846266.612 | 1846266.800 | 0.188 | 1.02E-07 |
| W2VQS | OK | EM15jg | 1846266.612 | 1846266.810 | 0.198 | 1.07E-07 |
| K6BZZ | AZ | DM33xb | 1846266.612 | 1846266.276 | -0.336 | 1.82E-07 |
| K4MP | WWA | CN88 | 1846266.612 | 1846267.000 | 0.388 | 2.10E-07 |
| KG0HY | NE | EN20 | 1846266.612 | 1846267.000 | 0.388 | 2.10E-07 |
| K6APW | EB | CM87uv | 1846266.612 | 1846267.031 | 0.419 | 2.27E-07 |
| N5JOA | NFL | EM70vk | 1846266.612 | 1846267.200 | 0.588 | 3.18E-07 |
| W0HBK | IA | EN-42 | 1846266.612 | 1846266.000 | -0.612 | 3.31E-07 |
| K6DSW | LAX | DM04te | 1846266.612 | 1846262.000 | -4.612 | 2.50E-06 |
| N9GC | MN | EN35fc | 1846266.612 | 1846280.000 | 13.388 | 7.25E-06 |
| W4UK | SC | EM93 | 1846266.612 | 1846251.996 | -14.616 | 7.92E-06 |
| WA2USJ | NLI | FN30bq | 1846266.612 | 1846845.555 | 578.943 |
K5CM 80 Meters
| Call | Section | Grid | TX Frequency | Measured Freq | Error in Hz | Error in PPX |
| W5EMC | STX | EM10 | 3578262.718 | 3578262.720 | 0.002 | 5.59E-10 |
| K5XL | NTX | EM12kp | 3578262.718 | 3578262.724 | 0.006 | 1.68E-09 |
| N5DM | STX | EL29fs | 3578262.718 | 3578262.700 | -0.018 | 5.03E-09 |
| W1PW | AZ | DM33 | 3578262.718 | 3578262.745 | 0.027 | 7.55E-09 |
| WA1ABI | RI | FN41jp | 3578262.718 | 3578262.679 | -0.039 | 1.09E-08 |
| AF9A | IN | EM69wv | 3578262.718 | 3578262.675 | -0.043 | 1.20E-08 |
| K9KK | OK | EM15 | 3578262.718 | 3578262.781 | 0.063 | 1.76E-08 |
| K6BZZ | AZ | DM33xb | 3578262.718 | 3578262.638 | -0.080 | 2.24E-08 |
| W3JW | VA | FM17TN | 3578262.718 | 3578262.634 | -0.084 | 2.35E-08 |
| VE3OAT | ON | FN25eg | 3578262.718 | 3578262.623 | -0.095 | 2.65E-08 |
| W6OQI | LAX | DM04vf | 3578262.718 | 3578262.621 | -0.097 | 2.71E-08 |
| KM6QX | EB | CM87 | 3578262.718 | 3578262.621 | -0.097 | 2.71E-08 |
| W4UK | SC | EM93 | 3578262.718 | 3578262.620 | -0.098 | 2.74E-08 |
| WA4FJC | VA | FM08lf | 3578262.718 | 3578262.600 | -0.118 | 3.30E-08 |
| KD2BD | NNJ | FN20xd | 3578262.718 | 3578262.598 | -0.120 | 3.35E-08 |
| W2VQS | OK | EM15jg | 3578262.718 | 3578262.850 | 0.132 | 3.69E-08 |
| w5sxd | STX | el29ep | 3578262.718 | 3578262.851 | 0.133 | 3.72E-08 |
| AB4RS | VA | FM18hw | 3578262.718 | 3578262.581 | -0.137 | 3.83E-08 |
| W9TJ | IL | EM48 | 3578262.718 | 3578262.580 | -0.138 | 3.86E-08 |
| AA8K | MI | EN82sx | 3578262.718 | 3578262.560 | -0.158 | 4.42E-08 |
| W9ZB | IN | EM69xp | 3578262.718 | 3578262.532 | -0.186 | 5.20E-08 |
| N3FG | EPA | FM29 | 3578262.718 | 3578262.530 | -0.188 | 5.25E-08 |
| W6IHG | VA | FM09tb | 3578262.718 | 3578262.528 | -0.190 | 5.31E-08 |
| WA2DVU | SNJ | FM29nb | 3578262.718 | 3578262.527 | -0.191 | 5.34E-08 |
| WBØLXZ | KS | EM27pk | 3578262.718 | 3578262.914 | 0.196 | 5.48E-08 |
| VE2IQ | ON | FN15nt | 3578262.718 | 3578262.519 | -0.199 | 5.56E-08 |
| N7AIG | AZ | DM42ng | 3578262.718 | 3578262.491 | -0.227 | 6.34E-08 |
| K6APW | EB | CM87uv | 3578262.718 | 3578262.980 | 0.262 | 7.32E-08 |
| W0HBK | IA | EN-42 | 3578262.718 | 3578263.000 | 0.282 | 7.88E-08 |
| K0OD | MO | EM48 | 3578262.718 | 3578262.400 | -0.318 | 8.89E-08 |
| W1HKJ | AL | EM64qv | 3578262.718 | 3578263.040 | 0.322 | 9.00E-08 |
| K1GGI | EMA | FN41wr | 3578262.718 | 3578262.379 | -0.339 | 9.47E-08 |
| W0PHD | MN | EN18oe | 3578262.718 | 3578262.374 | -0.344 | 9.61E-08 |
| N5JOA | NFL | EM70vk | 3578262.718 | 3578263.100 | 0.382 | 1.07E-07 |
| N5LBZ | MS | EM53qv | 3578262.718 | 3578262.250 | -0.468 | 1.31E-07 |
| WB3AKD | VA | FM19CE | 3578262.718 | 3578262.078 | -0.640 | 1.79E-07 |
| N2GL | OR | CN85ko | 3578262.718 | 3578262.030 | -0.688 | 1.92E-07 |
| N9GC | MN | EN35fc | 3578262.718 | 3578259.000 | -3.718 | 1.04E-06 |
| K6DSW | LAX | DM04te | 3578262.718 | 3578259.000 | -3.718 | 1.04E-06 |
| KG0HY | NE | EN20 | 3578262.718 | 3578267.000 | 4.282 | 1.20E-06 |
| K4MP | WWA | CN88 | 3578262.718 | 3578257.000 | -5.718 | 1.60E-06 |
| WD9GLR | IN | EN61gm | 3578262.718 | 3578480.272 | 217.554 | |
| WA2USJ | NLI | FN30bq | 3578262.718 | 3578865.556 | 602.838 | |
| N7EP | AZ | DM43dj | 3578262.718 | 3576625.310 | -1637.408 |
K5CM 20 Meters
| Call | Section | Grid | TX Frequency | Measured Freq | Error in Hz | Error in PPX |
| W1PW | AZ | DM33 | 14058632.277 | 14058632.283 | 0.006 | 4.27E-10 |
| W1HKJ | AL | EM64qv | 14058632.277 | 14058632.300 | 0.023 | 1.64E-09 |
| N5LBZ | MS | EM53qv | 14058632.277 | 14058632.250 | -0.027 | 1.92E-09 |
| N3FG | EPA | FM29 | 14058632.277 | 14058632.330 | 0.053 | 3.77E-09 |
| W3JW | VA | FM17TN | 14058632.277 | 14058632.206 | -0.071 | 5.05E-09 |
| VE3OAT | ON | FN25eg | 14058632.277 | 14058632.196 | -0.081 | 5.76E-09 |
| VE2IQ | ON | FN15nt | 14058632.277 | 14058632.190 | -0.087 | 6.19E-09 |
| W6IHG | VA | FM09tb | 14058632.277 | 14058632.370 | 0.093 | 6.62E-09 |
| W9ZB | IN | EM69xp | 14058632.277 | 14058632.181 | -0.096 | 6.83E-09 |
| WBØLXZ | KS | EM27pk | 14058632.277 | 14058632.170 | -0.107 | 7.61E-09 |
| K9KK | OK | EM15 | 14058632.277 | 14058632.167 | -0.110 | 7.82E-09 |
| w5sxd | STX | el29ep | 14058632.277 | 14058632.156 | -0.121 | 8.61E-09 |
| WA1ABI | RI | FN41jp | 14058632.277 | 14058632.153 | -0.124 | 8.82E-09 |
| K7TT | WWA | CN87wl | 14058632.277 | 14058632.411 | 0.134 | 9.53E-09 |
| N2GL | OR | CN85ko | 14058632.277 | 14058632.140 | -0.137 | 9.74E-09 |
| WA2DVU | SNJ | FM29nb | 14058632.277 | 14058632.130 | -0.147 | 1.05E-08 |
| KM6QX | EB | CM87 | 14058632.277 | 14058632.117 | -0.160 | 1.14E-08 |
| AB4RS | VA | FM18hw | 14058632.277 | 14058632.102 | -0.175 | 1.24E-08 |
| K6IQL | KS | EM28nq | 14058632.277 | 14058632.092 | -0.185 | 1.32E-08 |
| K6BZZ | AZ | DM33xb | 14058632.277 | 14058632.083 | -0.194 | 1.38E-08 |
| W5EMC | STX | EM10 | 14058632.277 | 14058632.500 | 0.223 | 1.59E-08 |
| K6APW | EB | CM87uv | 14058632.277 | 14058632.040 | -0.237 | 1.69E-08 |
| W0HBK | IA | EN42 | 14058632.277 | 14058632.000 | -0.277 | 1.97E-08 |
| N7EP | AZ | DM43dj | 14058632.277 | 14058632.000 | -0.277 | 1.97E-08 |
| W9TJ | IL | EM48 | 14058632.277 | 14058631.970 | -0.307 | 2.18E-08 |
| W0PHD | MN | EN18oe | 14058632.277 | 14058632.590 | 0.313 | 2.23E-08 |
| W6OQI | LAX | DM04vf | 14058632.277 | 14058632.907 | 0.630 | 4.48E-08 |
| N7AIG | AZ | DM42ng | 14058632.277 | 14058631.304 | -0.973 | 6.92E-08 |
| K1GGI | EMA | FN41wr | 14058632.277 | 14058633.319 | 1.042 | 7.41E-08 |
| N5DM | STX | EL29fs | 14058632.277 | 14058633.750 | 1.473 | 1.05E-07 |
| VE3GTC | ON | FN25ig | 14058632.277 | 14058628.766 | -3.511 | 2.50E-07 |
| N9GC | MN | EN35fc | 14058632.277 | 14058643.000 | 10.723 | 7.63E-07 |
| KG0HY | NE | EN20 | 14058632.277 | 14058679.500 | 47.223 | 3.36E-06 |
| WD9GLR | IN | EN61gm | 14058632.277 | 14058700.050 | 67.773 | 4.82E-06 |
W6OQI 80 Meters
| Call | Section | Grid | TX Frequency | Measured Freq | Error in Hz | Error in PPX |
| WA1ABI | RI | FN41jp | 3567623.528 | 3567623.553 | 0.025 | 7.01E-09 |
| WA4FJC | VA | FM08lf | 3567623.528 | 3567623.5 | -0.028 | 7.85E-09 |
| W1PW | AZ | DM33 | 3567623.528 | 3567623.499 | -0.029 | 8.13E-09 |
| W6IHG | VA | FM09tb | 3567623.528 | 3567623.495 | -0.033 | 9.25E-09 |
| KM6QX | EB | CM87 | 3567623.528 | 3567623.57 | 0.042 | 1.18E-08 |
| N7AIG | AZ | DM42ng | 3567623.528 | 3567623.482 | -0.046 | 1.29E-08 |
| K5CM | OK | EM25 | 3567623.528 | 3567623.457 | -0.071 | 1.99E-08 |
| N7EP | AZ | DM43dj | 3567623.528 | 3567623.455 | -0.073 | 2.05E-08 |
| KD2BD | NNJ | FN20xd | 3567623.528 | 3567623.441 | -0.087 | 2.44E-08 |
| AA8K | MI | EN82sx | 3567623.528 | 3567623.39 | -0.138 | 3.87E-08 |
| AB4RS | VA | FM18hw | 3567623.528 | 3567623.385 | -0.143 | 4.01E-08 |
| VE3OAT | ON | FN25eg | 3567623.528 | 3567623.356 | -0.172 | 4.82E-08 |
| W0PHD | MN | EN18oe | 3567623.528 | 3567623.349 | -0.179 | 5.02E-08 |
| N3FG | EPA | FM29 | 3567623.528 | 3567623.34 | -0.188 | 5.27E-08 |
| VE2IQ | ON | FN15nt | 3567623.528 | 3567623.333 | -0.195 | 5.47E-08 |
| W2VQS | OK | EM15jg | 3567623.528 | 3567623.32 | -0.208 | 5.83E-08 |
| K9KK | OK | EM15 | 3567623.528 | 3567623.307 | -0.221 | 6.19E-08 |
| K1GGI | EMA | FN41wr | 3567623.528 | 3567623.287 | -0.241 | 6.76E-08 |
| W9ZB | IN | EM69xp | 3567623.528 | 3567623.273 | -0.255 | 7.15E-08 |
| KG0HY | NE | EN20 | 3567623.528 | 3567623.8 | 0.272 | 7.62E-08 |
| K6BZZ | AZ | DM33xb | 3567623.528 | 3567623.226 | -0.302 | 8.47E-08 |
| K5XL | NTX | EM12kp | 3567623.528 | 3567623.209 | -0.319 | 8.94E-08 |
| K5XL | NTX | EM12kp | 3567623.528 | 3567623.209 | -0.319 | 8.94E-08 |
| WBØLXZ | KS | EM27pk | 3567623.528 | 3567623.203 | -0.325 | 9.11E-08 |
| K0OD | MO | EM48 | 3567623.528 | 3567623.2 | -0.328 | 9.19E-08 |
| W5EMC | STX | EM10 | 3567623.528 | 3567623.2 | -0.328 | 9.19E-08 |
| W3JW | VA | FM17TN | 3567623.528 | 3567623.172 | -0.356 | 9.98E-08 |
| K6APW | EB | CM87uv | 3567623.528 | 3567623.92 | 0.392 | 1.10E-07 |
| W9TJ | IL | EM48 | 3567623.528 | 3567623.13 | -0.398 | 1.12E-07 |
| W4UK | SC | EM93 | 3567623.528 | 3567623.103 | -0.425 | 1.19E-07 |
| N5DM | STX | EL29fs | 3567623.528 | 3567623.1 | -0.428 | 1.20E-07 |
| W0HBK | IA | EN-42 | 3567623.528 | 3567624 | 0.472 | 1.32E-07 |
| N2GL | OR | CN85ko | 3567623.528 | 3567624 | 0.472 | 1.32E-07 |
| KØMZ | KS | EM28ix | 3567623.528 | 3567624 | 0.472 | 1.32E-07 |
| N5JOA | NFL | EM70vk | 3567623.528 | 3567624 | 0.472 | 1.32E-07 |
| N5LBZ | MS | EM53qv | 3567623.528 | 3567623 | -0.528 | 1.48E-07 |
| K4MP | WWA | CN88 | 3567623.528 | 3567619 | -4.528 | 1.27E-06 |
| K6DSW | LAX | DM04te | 3567623.528 | 3567619 | -4.528 | 1.27E-06 |
| K6IQL | KS | EM28nq | 3567623.528 | 3567616.44 | -7.088 | 1.99E-06 |
| WB3AKD | VA | FM19CE | 3567623.528 | 3567702 | 78.472 | |
| w5sxd | STX | el29ep | 3567623.528 | 3567493.882 | -129.646 |
W6OQI 40 Meters
| Call | Section | Grid | TX Frequency | Measured Freq | Error in Hz | Error in PPX |
| VE3OAT | ON | FN25eg | 7056999.916 | 7056999.902 | -0.014 | 1.98E-09 |
| N7EP | AZ | DM43dj | 7056999.916 | 7056999.931 | 0.015 | 2.13E-09 |
| W1PW | AZ | DM33 | 7056999.916 | 7056999.939 | 0.023 | 3.26E-09 |
| AA8K | MI | EN82sx | 7056999.916 | 7056999.940 | 0.024 | 3.40E-09 |
| WA1ABI | RI | FN41jp | 7056999.916 | 7056999.878 | -0.038 | 5.38E-09 |
| K5CM | OK | EM25 | 7056999.916 | 7056999.874 | -0.042 | 5.95E-09 |
| KM6QX | PAC | CM87 | 7056999.916 | 7056999.969 | 0.053 | 7.51E-09 |
| N7AIG | AZ | DM42ng | 7056999.916 | 7056999.979 | 0.063 | 8.93E-09 |
| AB4RS | VA | FM18hw | 7056999.916 | 7056999.849 | -0.067 | 9.49E-09 |
| W3JW | VA | FM17TN | 7056999.916 | 7056999.826 | -0.090 | 1.28E-08 |
| W6IHG | VA | FM09tb | 7056999.916 | 7056999.814 | -0.102 | 1.45E-08 |
| K5XL | NTX | EM12kp | 7056999.916 | 7056999.803 | -0.113 | 1.60E-08 |
| K5XL | NTX | EM12kp | 7056999.916 | 7056999.803 | -0.113 | 1.60E-08 |
| W9TJ | IL | EM48 | 7056999.916 | 7056999.770 | -0.146 | 2.07E-08 |
| W2VQS | OK | EM15jg | 7056999.916 | 7056999.750 | -0.166 | 2.35E-08 |
| K9KK | OK | EM15 | 7056999.916 | 7056999.712 | -0.204 | 2.89E-08 |
| N5JOA | NFL | EM70vk | 7056999.916 | 7056999.700 | -0.216 | 3.06E-08 |
| K6APW | EB | CM87uv | 7056999.916 | 7057000.144 | 0.228 | 3.23E-08 |
| K6BZZ | AZ | DM33xb | 7056999.916 | 7057000.165 | 0.249 | 3.53E-08 |
| W9ZB | IN | EM69xp | 7056999.916 | 7056999.500 | -0.416 | 5.89E-08 |
| W4UK | SC | EM93 | 7056999.916 | 7056999.500 | -0.416 | 5.89E-08 |
| N5DM | STX | EL29fs | 7056999.916 | 7056999.450 | -0.466 | 6.60E-08 |
| K6DSW | LAX | DM04te | 7056999.916 | 7056995.000 | -4.916 | 6.97E-07 |
| K4MP | WWA | CN88 | 7056999.916 | 7056496.000 | -503.916 | 7.14E-05 |
| WD9GLR | IN | EN61gm | 7056999.916 | 7055960.775 | -1039.141 | 1.47E-04 |
| K1GGI | EMA | FN41wr | 7056999.916 | 7055912.258 | -1087.658 | 1.54E-04 |
Audio snippets recorded by WA1ABI
audio/k5cm-160m-by-abi-jan-2011.wav
audio/k5cm-80m-by-abi-jan-2011.wav
audio/k5cm-20m-by-abi-jan-2011.wav
audio/w6oqi-80m-by-abi-jan-2011.wav
audio/w6oqi-40m-by-abi-jan-2011.wav
Audio snippets recorded by K5CM
Notice the QRM start during Marvin's key down.
audio/w6oqi-jan2011-40m-by cm.wav
audio/w6oqi-jan2011-80-shack-snip by cm.wav
F M T Q S T D E W 6 O Q I
This from KM6QX:
KM6QXDopplerGraphs-jan-2011.pdf
The
attached pdf file has my Frequency-vs-Time graphs which were made from
Fldigi’s high resolution csv logging files.
OCF
Dipole (N-S), ThunderBolt GPSDO, Flex-1500 receiver (SR=Off, IF= 0Hz, Ext. 10MHz
Ref), Virtual Audio Cable to Fldigi, and an old HP3325A Signal Generator for
calibration.
John
Stuart
,
KM6QX
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 Dentron 2500 running 350 - 500 watts out on 160, 80, 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, but to another GPS source.
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.
Antennas:
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'
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.
73,
Connie
K5CM