K5CM FMT October 27, 2013 (9:00 PM CDT)
TX Frequencies
K5CM - 3598022.187 Hz
W6OQI - 14121066.888 Hz
Comments
| WA6RZW | CO | DM79 | Thanks for the warm up exercise. |
| K4LED | GA | EM74sk | W6OQI very weak signal in north Georgia.K5CM good signal strength. |
| W4JLE | SC | EM93hv | Aaaaaarg! Forgot to turn every thing on until 5 min before the hour. Great signals from both stations here in South Carolina. |
| N8OB | OH | EN80ko | TS-590 and Spectrum Lab. It's been a long time since I have done this. Still lots of fun. |
| W4JLE | SC | EM93hv | Arg! Forgot to turn everything on until 5 before the hour. Great signals from both stations into SC. |
| N5LBZ | MS | EM53qv | good signals from both stations here in Mississippi. TNX for the test. |
| N2GL | OR | cn85kp | SLM with Spectrum Lab. Did not hear 20m signal.Thanks Connie! |
| W9ZB | IN | EM69xp | 20M signal was in the noise at this QTH, so reading was ruff guess. 80M signal was S9 w/some QSB. TNX for the warm-up. Needed the practice! |
| WA2DVU | SNJ | FM29nc | Poor Sigs - 20 m qrm, 80 m s2 - s4. Thank you Connie. 73, Bill |
| K3KO | NC | FM06 | K3/HP-8657B/HP-5335A/Spectrum Lab/HB data reduction. Got rusty at this. Thanks for the warmup. |
| W3PM | AL | EM64or | This is my first FMT. Equipment is all homebrew using GPS disciplined AD9851 DDS and Spectran. |
| W6OQI | LAX | DM04vf | K5CM signal S5 to S8 on 80 meters here in Southern California. |
| WB6BNQ | SDG | DM12 | W6OQI was extremely weak into San Diego on 20 meters. Almost non-existent, but then again, I was using a 40 meter dipole. K5CM had a better signal but propagation was quite poor into my QTH using a random length wire. Hopefully I came close or at least not too far away. |
| K6OQK | LAX | DM04ud | It's been a while since I've had the opportunity to participate in a FMT because of conflicting schedules. I'm going to try and be more of a regular once again.Marv's signal being only 8 miles away is alway very strong and pretty stable at my location. Connie's signal was about a S-5 and had about a 0.5 Hz of Doppler spread. I used my normal set up which is described on Connie's Website.Burt, K6OQK |
| N4AU | AL | EM62vp | Good signals from both stations. Used TS570 with the K1JT FMT program with a bat file for the readings. |
| ku4py | AL | EM62wj | God signals on both 20 and 80. Used Joe Taylor's program for measurement and calibration. Antenna is a Vertical. |
| K5RKS | OK | EM15 | I was a little rusty because I only do the FMT a couple of times a year. I let my stuff warm up for about 24 hours. As usual I ran with homebrew software using "classical" Fast Fourier Transform algorithm. Freq standard here is HP3336B using external GPS disciplined 10Mhz clock. Both W6OQI and K5CM signals were S6 or better. I guess I'm as ready as I'll ever be for the ARRL November FMT. |
| KM6QX | EB | CM87 | 80m QRN and QRM were horrible on dipole; could not see k5cm on Flex-1500. But with Pixel loop, k5cm's S4 was 25dB above -125dBm noise floor and the only signal on panadapter. Sunset was only 45 minutes before FMT, but very little Doppler shift on either signal. |
| VE3OAT | ON | FN25eg | Propagation seemed stable and signals were good. But I discovered there is a loose connection somewhere in my GPS antenna cable. Oh, oh, Thunderbolt doesn't like that. Thanks to Connie and Marv for the much-needed practice. |
| WB0LXZ | KS | EM27pj | I put CHU at 14.67 on speclab for several hours before the FMT, and it had 3Hz swings. 20meters seemed to have settled down by 9:00. Used HP3586B, HP3335A, newer computer, upgraded Spec Lab, miniwhip, 80meter dipole. Fun. Thanks - bill |
| KG6HSQ | SDG | DM13JJ | |
| W3JW | VA | FM17tn | Observed doppler shift on 2.5,5.0 and 15.0 MHz WWV sigs (just prior to the FMT) were "outta sight" ! much greater than normal---for the first time I can remember, the west coast 20 meter signal was stronger than the midwest 80 meter signal here in VA-- also sunspot activity has been high the last few days and 10 meters has been open to everywhere--- |
| AF9A | IN | EM69wv | W6OQI was never stronger than 10dB above the noise on QSB peaks. My frequency reading is pretty much a guess. K5CM was S9. Thanks! |
| W2KKJ | ENY | FN32eq | Using a TS-2000 + K1JT FMT software. Had added noise from laptop power supply that will be on batteries next time. K5CM a bit weak here but never dropped out of waterfall. |
| K9KK | OK | EM15 | Excellent signals from both Connie and Marv. Thanks |
K5CM 80 Meters
| Call | Section | Grid | TX Frequency | Measured Freq | Error in Hz | Error in PPX |
| VE3OAT | ON | FN25eg | 3598022.187 | 3598022.175 | -0.012 | 3.34E-09 |
| K9KK | OK | EM15 | 3598022.187 | 3598022.201 | 0.014 | 3.89E-09 |
| W3PM | AL | EM64or | 3598022.187 | 3598022.166 | -0.021 | 5.84E-09 |
| WA6RZW | CO | DM79 | 3598022.187 | 3598022.163 | -0.024 | 6.67E-09 |
| K5RKS | OK | EM15 | 3598022.187 | 3598022.156 | -0.031 | 8.62E-09 |
| W9ZB | IN | EM69xp | 3598022.187 | 3598022.220 | 0.033 | 9.17E-09 |
| KM6QX | EB | CM87 | 3598022.187 | 3598022.220 | 0.033 | 9.17E-09 |
| AF9A | IN | EM69wv | 3598022.187 | 3598022.220 | 0.033 | 9.17E-09 |
| WB0LXZ | KS | EM27pj | 3598022.187 | 3598022.085 | -0.102 | 2.83E-08 |
| N8OB | OH | EN80ko | 3598022.187 | 3598022.297 | 0.110 | 3.06E-08 |
| W2KKJ | ENY | FN32eq | 3598022.187 | 3598022.071 | -0.116 | 3.22E-08 |
| WB6BNQ | SDG | DM12 | 3598022.187 | 3598022.050 | -0.137 | 3.81E-08 |
| K6OQK | LAX | DM04ud | 3598022.187 | 3598022.049 | -0.138 | 3.84E-08 |
| K3KO | NC | FM06 | 3598022.187 | 3598022.034 | -0.153 | 4.25E-08 |
| W4JLE | SC | EM93hv | 3598022.187 | 3598022.018 | -0.169 | 4.70E-08 |
| W6OQI | LAX | DM04vf | 3598022.187 | 3598022.005 | -0.182 | 5.06E-08 |
| K4LED | GA | EM74sk | 3598022.187 | 3598022.000 | -0.187 | 5.20E-08 |
| W3JW | VA | FM17tn | 3598022.187 | 3598021.994 | -0.193 | 5.36E-08 |
| N4AU | AL | EM62vp | 3598022.187 | 3598021.826 | -0.361 | 1.00E-07 |
| ku4py | AL | EM62wj | 3598022.187 | 3598021.824 | -0.363 | 1.01E-07 |
| N2GL | OR | cn85kp | 3598022.187 | 3598021.720 | -0.467 | 1.30E-07 |
| N5LBZ | MS | EM53qv | 3598022.187 | 3598024.524 | 2.337 | 6.50E-07 |
| KG6HSQ | SDG | DM13JJ | 3598022.187 | 3598017.850 | -4.337 | 1.21E-06 |
| WA2DVU | SNJ | FM29nc | 3598022.187 | 3599872.150 |
W6OQI 20 Meters
| Call | Section | Grid | TX Frequency | Measured Freq | Error in Hz | Error in PPX |
| *K6OQK | LAX | DM04ud | 14121066.888 | 14121066.889 | 0.001 | 7.08E-11 |
| WA6RZW | CO | DM79 | 14121066.888 | 14121066.867 | -0.021 | 1.49E-09 |
| K5RKS | OK | EM15 | 14121066.888 | 14121066.927 | 0.039 | 2.76E-09 |
| AF9A | IN | EM69wv | 14121066.888 | 14121067.000 | 0.112 | 7.93E-09 |
| W2KKJ | ENY | FN32eq | 14121066.888 | 14121066.774 | -0.114 | 8.07E-09 |
| VE3OAT | ON | FN25eg | 14121066.888 | 14121066.727 | -0.161 | 1.14E-08 |
| K5CM | OK | EM25 | 14121066.888 | 14121067.054 | 0.166 | 1.18E-08 |
| K3KO | NC | FM06 | 14121066.888 | 14121066.708 | -0.180 | 1.27E-08 |
| WB6BNQ | SDG | DM12 | 14121066.888 | 14121066.700 | -0.188 | 1.33E-08 |
| K9KK | OK | EM15 | 14121066.888 | 14121066.689 | -0.199 | 1.41E-08 |
| KM6QX | EB | CM87 | 14121066.888 | 14121067.127 | 0.239 | 1.69E-08 |
| WB0LXZ | KS | EM27pj | 14121066.888 | 14121066.643 | -0.245 | 1.73E-08 |
| W3PM | AL | EM64or | 14121066.888 | 14121066.630 | -0.258 | 1.83E-08 |
| N5LBZ | MS | EM53qv | 14121066.888 | 14121066.590 | -0.298 | 2.11E-08 |
| W9ZB | IN | EM69xp | 14121066.888 | 14121067.200 | 0.312 | 2.21E-08 |
| ku4py | AL | EM62wj | 14121066.888 | 14121066.378 | -0.510 | 3.61E-08 |
| N4AU | AL | EM62vp | 14121066.888 | 14121066.179 | -0.709 | 5.02E-08 |
| W3JW | VA | FM17tn | 14121066.888 | 14121066.034 | -0.854 | 6.05E-08 |
| N8OB | OH | EN80ko | 14121066.888 | 14121060.393 | -6.495 | 4.60E-07 |
| KG6HSQ | SDG | DM13JJ | 14121066.888 | 14121053.122 | -13.766 | 9.75E-07 |
| K4LED | GA | EM74sk | 14121066.888 | 14121665.000 | 598.112 | |
| W4JLE | SC | EM93hv | 14121066.888 | 14122065.689 | 998.801 |
* May be in ground wave range of W6OQI
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.
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 a 3 element tribander .
Note: Because I put the results up quickly, there will be mistakes, so don't hesitate to point them out quickly.
73,
Connie
K5CM