November 14, 2013
Actual Radio Frequencies (Hz):
K5CM/W8KSE/W6OQI/WA6ZTY All (<=1 Hz):
AA6LK, AB9QH, AC0ZG, AE5P, AF9A, K0ANS, K1GGI, K2LYV, K3JQ, K3KO, K4COD, K5BTK, K5CM, K5RKS, K5X, K5XL, K6IQL, K7HIL, K8DJR, K9KK, KD5MMM, KI0LS, KM6QX, N5DM, N5LBZ, N7EP, N8OQ, VE2IQ, VE3OAT, W0HBK, W3JW, W3PM, W4UK, W6IHG, W7JWM, W8DPK, W8XN, W9ZB, WA1ABI, WB6BNQ
K5CM 160 (<=1 Hz):
AA6LK, AA8K, AB1AV, AB9QH, AC0ZG, AE5P, AF9A, AG2M, AG6TW, K0ANS, K0BJB, K1GGI, K2LYV, K3JQ, K3KO, K4BSD, K4COD, K5BTK, K5CM, K5RKS, K5X, K5XL, K6IQL, K7HIL, K8DJR, K9JM, K9KK, KA7OEI, KD5MMM, KG0HY, KI0LS, KK5J, KM6QX, N0PFE, N0XC, N2GL, N4AU, N5DM, N5LBZ, N7EP, N8OQ, N9YKE, VE2IQ, VE3OAT, W0HBK, W2FD, W3JW, W3PM, W4GO, W4UK, W5TV, W6IHG, W7JWM, W7PUA, W8DPK, W8XN, W9ZB, WA1ABI, WA2DVU, WA6RZW, WA7KMR, WB0LXZ, WB6BNQ
K5CM 160 (>1 to <=5 Hz):
N5KAE, W2ZK, W3FAY, W4NUS, WB5EXI, WB8EVI
K5CM 160 (>5 to <=10 Hz):
K5CM 160 (>10 Hz):
AA9DH, K0HJ, K8TLC, KE9SA, KU4PY, W6SFH, W7HXM, W7KPZ, WA4FJC
K5CM 80 (<=1 Hz):
AA6LK, AA6P, AA8K, AB1AV, AB9QH, AC0ZG, AE5P, AF9A, AG2M, AG6TW, AK4PK, K0ANS, K1GGI, K2LYV, K3JQ, K3KO, K4BSD, K4COD, K5BTK, K5CM, K5RKS, K5X, K5XL, K6APW, K6IQL, K7HIL, K8DJR, K9JM, K9KK, KA7OEI, KD5MMM, KG0HY, KG6HSQ, KI0LS, KK5J, KM6QX, KU4PY, N0PFE, N0XC, N4AU, N5DM, N5LBZ, N7EP, N8OQ, N9YKE, VE2IQ, VE3OAT, W0HBK, W2FD, W2ZK, W3FAY, W3JW, W3PM, W4GO, W4UK, W6IHG, W6OQI, W6SFH, W7JWM, W7KPZ, W7PUA, W8DPK, W8XN, W9ZB, WA1ABI, WA2DVU, WA4FJC, WA6RZW, WA6ZTY, WA7KMR, WB6BNQ
K5CM 80 (>1 to <=5 Hz):
K0BJB, K6QL, KC8IMB, N2GL, N5KAE, W4NUS, W5TV, WB0LXZ, WB5EXI, WB8EVI
K5CM 80 (>5 to <=10 Hz):
K0HJ, KE2VO, WB3LHI
K5CM 80 (>10 Hz):
AA9DH, K8TLC, KA6WKE, KE9SA, W7HXM, W9AF, WB6UZZ
W8KSE 80 (<=1 Hz):
AA6LK, AA6P, AA8K, AB9QH, AC0ZG, AE5P, AF9A, AG2M, AG6TW, AK4PK, K0ANS, K1GGI, K2LYV, K3JQ, K3KO, K4BSD, K4COD, K5BTK, K5CM, K5RKS, K5X, K5XL, K6APW, K6IQL, K7HIL, K8DJR, K9JM, K9KK, KA7OEI, KD5MMM, KG0HY, KG6HSQ, KI0LS, KK5J, KM6QX, N0PFE, N0XC, N5DM, N5LBZ, N7EP, N8OQ, N9YKE, VE2IQ, VE3OAT, W0HBK, W2FD, W3FAY, W3JW, W3PM, W4GO, W4UK, W6IHG, W6OQI, W6SFH, W7JWM, W8DPK, W8XN, W9ZB, WA1ABI, WA2DVU, WA4FJC, WA6RZW, WB0LXZ, WB6BNQ
W8KSE 80 (>1 to <=5 Hz):
AB1AV, K6QL, KC8IMB, N5KAE, W2ZK, W5TV, W7KPZ, WB5EXI, WB8EVI
W8KSE 80 (>5 to <=10 Hz):
KE2VO, W4NUS, WA6ZTY
W8KSE 80 (>10 Hz):
AA9DH, K0BJB, K0HJ, K8TLC, KA6WKE, KE9SA, KU4PY, N4AU, W7HXM, W7PUA, W9AF, WA7KMR, WB3LHI, WB6UZZ
W6OQI 80 (<=1 Hz):
AA6LK, AA6P, AA8K, AB1AV, AB9QH, AC0ZG, AE5P, AF9A, AG6TW, AK4PK, K0ANS, K1GGI, K2LYV, K3JQ, K3KO, K4BSD, K4COD, K5BTK, K5CM, K5RKS, K5X, K5XL, K6APW, K6IQL, K7HIL, K8DJR, K9JM, K9KK, KA6WKE, KA7OEI, KD5MMM, KG0HY, KG6HSQ, KI0LS, KK5J, KM6QX, N0PFE, N0XC, N2GL, N5DM, N5LBZ, N7EP, N8OQ, N9YKE, VE2IQ, VE3OAT, W0HBK, W2FD, W3FAY, W3JW, W3PM, W4GO, W4UK, W6IHG, W6OQI, W6SFH, W7JWM, W7KPZ, W7PUA, W8DPK, W8XN, W9ZB, WA1ABI, WA4FJC, WA4OBJ, WA6RZW, WA6ZTY, WA7KMR, WB0LXZ, WB6BNQ, WB6UZZ
W6OQI 80 (>1 to <=5 Hz):
KC8IMB, W5TV, WB5EXI, WB8EVI
W6OQI 80 (>5 to <=10 Hz):
K8TLC, KE2VO, N5KAE
W6OQI 80 (>10 Hz):
AA9DH, AG2M, K0HJ, KE7WNB, KE9SA, KU4PY, N4AU, W4NUS, W7HXM, W9AF, WB3LHI, WB6VEX
K5CM 40 (<=1 Hz):
AA6LK, AA6P, AA8K, AB9QH, AC0ZG, AE5P, AE7KO, AF9A, AG2M, AK4PK, K0ANS, K1GGI, K2LYV, K3JQ, K3KO, K4COD, K5BTK, K5CM, K5RKS, K5X, K5XL, K6APW, K6IQL, K7HIL, K8DJR, K9KK, KA7OEI, KD5MMM, KG6HSQ, KI0LS, KM6QX, KU4PY, N2GL, N4AU, N5DM, N5KAE, N5LBZ, N7EP, N8OQ, N9YKE, VE2IQ, VE3OAT, W0HBK, W2FD, W2ZK, W3FAY, W3JW, W3PM, W4NUS, W4UK, W5TV, W6IHG, W6OQI, W6SFH, W7JWM, W7KPZ, W7PUA, W8DPK, W8XN, W9ZB, WA1ABI, WA2DVU, WA4FJC, WA4OBJ, WA6ZTY, WA7KMR, WB0LXZ, WB6BNQ, WB8EVI
K5CM 40 (>1 to <=5 Hz):
AB1AV, AG6TW, K4BSD, K6QL, K7DR, KC8IMB, KE2VO, N3CRM, WB5EXI
K5CM 40 (>5 to <=10 Hz):
K5CM 40 (>10 Hz):
K0HJ, K8TLC, KE9SA, KG0HY, SV8QG, W7HXM, W9AF, WB6UZZ
W8KSE 40 (<=1 Hz):
AA6LK, AA6P, AA8K, AB1AV, AB9QH, AC0ZG, AE5P, AE7KO, AF9A, AG2M, AK4PK, K0ANS, K0BJB, K1GGI, K2LYV, K3JQ, K3KO, K4COD, K5BTK, K5CM, K5RKS, K5X, K5XL, K6APW, K6IQL, K7HIL, K8DJR, K9JM, K9KK, KD5MMM, KG6HSQ, KI0LS, KK5J, KM6QX, N0PFE, N0XC, N2GL, N5DM, N5LBZ, N7EP, N8OQ, N9YKE, VE2IQ, VE3OAT, W0HBK, W3FAY, W3JW, W3PM, W4GO, W4UK, W5TV, W6IHG, W6OQI, W6SFH, W7JWM, W7KPZ, W7PUA, W8DPK, W8XN, W9ZB, WA1ABI, WA4OBJ, WA6ZTY, WA7KMR, WB0LXZ, WB6BNQ
W8KSE 40 (>1 to <=5 Hz):
AG6TW, K4BSD, K6QL, KC8IMB, KE2VO, N5KAE, W2FD, WB5EXI, WB6UZZ, WB8EVI
W8KSE 40 (>5 to <=10 Hz):
W8KSE 40 (>10 Hz):
AA9DH, K0HJ, K8TLC, KE7WNB, KE9SA, KG0HY, KU4PY, N4AU, W4NUS, W7HXM, W9AF
W6OQI 40 (<=1 Hz):
AA6LK, AA6P, AB1AV, AB9QH, AC0ZG, AE5P, AE7KO, AF9A, AG2M, AK4PK, K0ANS, K1GGI, K2LYV, K3JQ, K3KO, K4BSD, K4COD, K5BTK, K5CM, K5RKS, K5X, K5XL, K6APW, K6IQL, K6QL, K7HIL, K8DJR, K9JM, K9KK, KA7OEI, KD5MMM, KG6HSQ, KI0LS, KM6QX, N0XC, N2GL, N5DM, N5KAE, N5LBZ, N7EP, N8OQ, N9YKE, VE2IQ, VE3OAT, W0HBK, W2FD, W2ZK, W3FAY, W3JW, W3PM, W4GO, W4NUS, W4UK, W5TV, W6IHG, W6OQI, W6SFH, W7JWM, W7KPZ, W7PUA, W8DPK, W8XN, W9ZB, WA1ABI, WA2DVU, WA6ZTY, WB0LXZ, WB6BNQ, WB8EVI
W6OQI 40 (>1 to <=5 Hz):
AA8K, AG6TW, KC8IMB, KE2VO, N0PFE, WB5EXI
W6OQI 40 (>5 to <=10 Hz):
W6OQI 40 (>10 Hz):
AA9DH, K0HJ, K8TLC, KE7WNB, KE9SA, KG0HY, KU4PY, N4AU, W7HXM, W9AF, WA4FJC, WA7KMR, WB6UZZ
WA6ZTY 40 (<=1 Hz):
AA6LK, AA6P, AA8K, AB1AV, AB9QH, AC0ZG, AE5P, AF9A, AG2M, AG6TW, AK4PK, K0ANS, K0BJB, K1GGI, K2LYV, K3JQ, K3KO, K4BSD, K4COD, K5BTK, K5CM, K5RKS, K5X, K5XL, K6APW, K6IQL, K7HIL, K8DJR, K9JM, K9KK, KA7OEI, KD5MMM, KG6HSQ, KI0LS, KK5J, KM6QX, N0PFE, N0XC, N2GL, N5DM, N5LBZ, N7EP, N8OQ, VE2IQ, VE3OAT, W0HBK, W2FD, W2ZK, W3FAY, W3JW, W3PM, W4GO, W4UK, W5TV, W6IHG, W6OQI, W7JWM, W7PUA, W8DPK, W8XN, W9ZB, WA1ABI, WA2DVU, WA4OBJ, WA6RZW, WA6ZTY, WB0LXZ, WB6BNQ, WB8EVI
WA6ZTY 40 (>1 to <=5 Hz):
K6QL, KC8IMB, KE2VO, N5KAE, W4NUS, W6SFH, WB5EXI
WA6ZTY 40 (>5 to <=10 Hz):
WA6ZTY 40 (>10 Hz):
AA9DH, K0HJ, K8TLC, KE9SA, KU4PY, N4AU, W7HXM, W7KPZ, W9AF, WA4FJC, WA7KMR, WB3LHI
Result Details (n=98):
|Method: HP Z3805A 10MHz GPSDO, Marconi 2019 HF synth, HP 3325A LF synth, HP 54601A o'scope, FT-847 in AM/narrow mode, 5BTV and 75M dipole
antennas, Vista laptop running SpecLab, DigiPan for spotting, EZGPIB controlling Prologix USB-GPIB to set up and interrogate instruments, GPSCon for monitoring Z3805A; the 2019 was set to inject a reference beat signal to produce a ~400Hz beat tone, and the 3325A was tuned for minimum phase slip between it and the beat tone. Each run was recorded to a .wav file through SpecLab, and at a later time replayed to export data to spreadsheet to determine submission numbers.|
Soapbox: Thanks guys for another well run event. W6OQI_80M was very strong, but all others relatively weak so I had to rely on SpecLab more than phase slip method. Luckily, not much interference this time. K5CM_160M was down in the noise, but SpecLab was able to pull him out.
|Method: IC-706MKIIG, WWV Calibration at 15 Mhz, Spectrum Lab|
Soapbox: Good signal strength in Southern California except for 160 meters where no signal was heard. The two other bands were open with some QRN and QSB. The IC-706MKIIG takes a long time to stabilize so WWV calibration readings were taken after each FMT transmission. This was my first Frequency Measurement Test.
|Method: I used Open HPSDR, Flex-Radio's PowerSDR, Trimble Thunderbolt GPSDO, and Spectrum Lab. I offset the HPSDR frequency about 500 Hz to make a tone with the HPSDR BFO, used PowerSDR to make a wave file. I played the file back in Audacity and ran Spectrum Lab, noting the offset from the HPSDR frequency. I used a TAPR TADD-2 connected to the GPSDO and receiver as a marker generator to check for DDS tuning word and sound card errors. Antenna: ground-mounted vertical 10 meters high.|
Soapbox: Signal levels in dBm, all measured on the same vertical antenna: K5CM 40 meter -65 Noise Floor -100, K5CM 80 meter -75 Noise Floor -105, K5CM 160 meter -85 Noise Floor -115 W8KSE 40 meter -90, W8KSE 80 meter -75, WA6ZTY 40 meter -60, W6OQI 40 meter -75, W6OQI 80 meter -95. WWV 2.5 MHz -75, 5 MHz -50, 10 MHz -45, 15 MHz -100, 20 MHz -105. CHU 3.3 MHz -55, 7.8 MHz -80, 14.6 MHz in the noise. A lot of smearing on W6OQI and W8KSE.
|Method: NooElec R820T SDR using a up-converter (~34MHz) and SDR# software, and Fldigi as a spectrum analyzer.|
Soapbox: I've always enjoyed these FMT's in the past, and decided to try the SDR this time. The system worked pretty well, although I did have some difficulty finding K5CM as the first station, but mostly due to operator inexperience! The system was also suffering from some converter frequency drift. Keep up the good work, and thanks!
|Method: FT-817 in AM mode, homebrew RF PLL, W8DIZ VCTCXO frequency standard, homebrew audio DDS. Injected RF at a nearby multiple of 1 KHz, listened to the AM-demodulated audio, and adjusted the audio DDS by ear to match. Tried to measure once from below and once from above for each test.|
Soapbox: Trying a purely "by ear" method using homebrew frequency generators for RF (PLL) and audio (DDS built from a PIC microcontroller). Most signals were good here in FN42, but W6OQI was hard to hear. Heard lots of QRM; would have done better with some audio filtering in the receive path.
|Method: FT-950 in USB CW mode and warmed up - calibrated internal PPL to as close as possible to WWV at 10 MHz. With Spectrum Labs software, measure the WWV frequency using USB CW mode and FT-950 set to 10,000,000 Hz and measure the BFO frequency. In my case it was 699.50 Hz. Then during test I adjusted the FT-950 frequency to give as close to 700 Hz BFO as possible and note FT-950 freq. to 1 Hz and add the difference between (the measured BFO freq - reference BFO freq) and add FT-950 Frequency|
Soapbox: This is the first time I have tried to measure the frequency. The next time, I will try to use my GPS frequency standard instead of WWV. The antenna is a multiband vertical mounted on the roof. Great test! Wow, the Doppler shift and signal strength are the great equalizers. 73, Fred AB9QH
|Method: HPSDR Hermes with TXCO intentionally disabled, custom FFT analysis software, Excel. Used Hermes ability to receive WWV, CHU and WWB signals simultaneously with the unknown signal, in order to track what my oscillator was doing during the FMT.|
Soapbox: Thanks to Connie and his team for a great FMT! Signals were all readable here in CO, although the 160m signal was getting near the noise. WA6ZTY's 40m signal was incredibly strong, but that was the one with the most doppler.
|Method: Flex 5000 and FLDIGI in frequency analysis mode.|
Soapbox: Many thanks to the transmitting stations for their time and effort. Much appreciated.
|Method: Used WSPR to measure the audio frequency.|
Soapbox: This was my first try at the FMT. Did my best to get the radio calibrated with WWV on 5 and 10 mhz. What, there were four 40M stations? I stopped after three.
|Method: OpenHPSDR Mercury phase display. External 10 MHz OCXO calibrated to WWV/CHU.|
Soapbox: K5CM had great signals here on 40 & 80. W8SKE is always difficult here. Guess we're to close. Those numbers were just a guess! W6OQI was only about 10dB above the noise at best, with QSB on 80.
|Method: Cushcraft R7000 vertical antenna to FT-950 analysis with Spectrum Lab running on Dell Inspiron notebook (using internal sound capability w/ mic/line input).|
Soapbox: Good reception on all FMT stations. Thanks to FMT transmit stations for their fine effort.
|Method: K3 with external synch to 10MHz Rubidium; Spectrum Lab V2.79 to determine bfo normal and reverse frequencies; averaged to get bfo freq then offset displayed measured freq.|
Soapbox: First time trying this; process needs refinement but needed to try out some new tools. 40M was hard to find some of the signals; other bands were better; thanks for the challenge!
|Method: The only thing I used was a FUNCUBE Dongle Pro+ USB dongle and SDR Sharp software. I used the CHU signals to calibrate the dongle. The only antenna I have is a VHF/UHF discone.|
Soapbox: I don't know how accurate this will be because these dongles drift around a lot. Based on the CHU signals, I think I could be within a hertz or so of the actual frequency. The 40m signals were fairly strong, the 80m signals were weak, and I didn't see anything on 160m. This isn't bad considering that I don't have an HF antenna.
|Method: 88-foot doublet 37 feet up fed with homebrew ladder line, Yaesu FT-817nd with TCXO, homebrew interface into a Mac running CocoaModem 2.0 in PSK31 mode. I let the rig warm up for several hours before the test, then calibrated it by listening to WWV before and after the test.|
Soapbox: I heard every station this time. WA6ZTY was so loud I could measure it with my dummy load instead of an antenna. I used a 6 meter antenna for K5CM and W8KSE on 80 meters.
|Method: SDR 1000 with inverted L & 40 M dipole|
Soapbox: good signals into IOWA
|Method: Heterodyne with hfo calibrated w/r/t gps, judge from spectrumlab peak detect.|
Soapbox: Managed to detect all sigs, another fun one.
|Method: Yaesu FT-450D, 21.5 vertical, W1JT fmt software included as part of the wspr package.|
Soapbox: The W1JT software just does a high resolution FFT on captured audio data. Given the power of a modern desktop, it's easy to get better than 1 Hz resolution with simple calibration on WWV, CHU, and local AM broadcast stations. A far cry from the old days using a BC441.
|Method: HP 3586B Selective Level Meter phase locked to Trimble Thunderbolt GPS Receiver/Carolina Windom 80 Short/Spectrum Lab Fourier Analysis Application running on Windows 7 PC.
Measured WWV's frequency at 10 MHz, 5 MHz before beginning of test, at 10 MHz, 5 MHz, and 2.5 MHz between 40m and 80m transmissions, at 5 MHz and 2.5 MHz between 80m and 160m transmissions, and at 2.5 MHz after end of test to compensate for error in sound card and 3586's BFO.
In the test, located the transmitted signal by observing the Spectrum Lab real Fourier spectrum with 3586's bandwidth set to 3.1 kHz. Then tuned the 3586 to within 1 Hz of signal and set bandwidth to 20 Hz. Recorded this frequency and the time.
All signal input was recorded to a file for later analysis.|
Soapbox: Here's the dirty little secret: Fourier analysis a la Spectrum Lab is very powerful. Even if the signal is on for only part of the time (as in call-up or turnover announcement), it will still appear in the Fourier spectrum, so it is not necessary to wait for key-down. And it's a good thing too, because I really fumbled the ball on the first few 40m transmissions, and I didn't get any key-down info for K5CM or W8KSE, but was only able to get measurements during the turnover announcement. So, here's hoping I didn't fumble anything else.
|Method: K3 RECEIVER with SDR panadapter, LPRO-101, HP8657B REF OSC, HP5335A, GPIB data collection, SPECTRUM LAB, HB data reduction program + DPLOT for data inspection/statistics|
Soapbox: Thanks to all who went through putting the FMT signals on the air! All signals reasonably good. W6OQI was a bit weak on 40 and got clobbered by a s9+20 digital signal on 80 midway through the measurements. Those $#@% automated digital stations which come on without listening ought to be blasted by a cruise missile. This time, I'm applying an "experience factor" to results to try and get results a bit closer.
|Method: Analog signal generator, Kenwood TS430S as RX, HP5328A Counter, Spec Lab. Set TS430 to USB 1KHz below expected freq. Beat with signal generator using headphones and Spec Lab, count the generator freq. Old school, lets see if it worked...again.|
Soapbox: All signals were S-9 or better. Not a lot of QRM even though they tried...just adds to the fun.
|Method: Flex 1500 radio fed by a 10Mhz GPSDO oscillator, using Spectrum Labs software data collection, and an Excel spreadsheet for data analysis and charting. Several antennas were used, depending on band conditions at the time/frequency. They were: a Super Loop 80, multi-band sloper, 40m inverted V, and a beverage antenna.|
Soapbox: Thanks very much to those stations providing the signals for the test. I haven't attempted one of these tests for two years, but I did enjoy the challenge provided once again. As usual, the Doppler freq. shifting did make it difficult.
|Method: FT-1000MP with standard oscillator, Spectrum Lab. Compensating for master oscillator offset and drift by alternating measurement of the "unknown" frequency with that of WWV (5mhz) every 5 secs.|
Soapbox: With the exception of the 160m test, all signals were far enough above the noise floor to enable measurements. W8KSE on 40m was 9+. The 160m noise floor was so high that the FMT signal faded beneath it at times.
|Method: Method: For transmitting the FMT I use an HP-Z3801 GPS frequency source which clocks a HP-3336b and a PTS-250. This feeds a 10 db transistor amp which drives a 12by7 / pair of 6146. The final amp runs about 200 watts. There are no mixers or any device in the chain of amplifiers that might impact the accuracy of the GPS frequency source. I verifiy the accuracy of the TX system with a second GPS referenced Receive system. Antennas:80 meter dipole slopping down from a 140' tower. 40 meter dipole between two 80' towers. 160 almost vertical. For RX I use an FT-1000D in AM mode with a PTS-250 for low side injection. Audio is feed to SpectrumLab. RX antennas are 500' Beverage|
Soapbox: Mr. Murphy stayed home this time . No major problems on TX by any of the stations. All signals were good copy, although it did seem Marvin's 40 meter signal was not as strong as normal, just conditions I guess.
|Method: Injecting signal into antenna from HP3336B which is using GPS disciplined 10Mhz signal as external reference. Injected signal from HP3336B is about 500 to 1000 Hz below FMT signal received off the air. I'm using homebrew software implementing FFT to determine baseband audio frequencies from receiver corresponding to each of the two RF carriers I'm listening to. Add difference between frequency of the two audio tones to dial frequency from the HP3336B to determine frequency of the FMT carrier. I do this procedure about 14 times during 120 second measurement period. I toss out any that look bad due to static crashes or noise and then average the rest and report the average. My antennas here are -- 40m: Inverted V apex 40 feet, 80m/160m: Sloper off side of 40 foot tower.|
Soapbox: Many signals were very stable. Some didn't move more than 0.1Hz during the entire 120 second test. At my QTH, W6OQI on 80m was the most unstable. It was "randomly" changing in frequency within a band of frequencies that was about 0.5Hz wide. S meter strength of signals -- which gives a ballpark of their relative strength: 40M -- K5CM S4, W8KSE S8, W6OQI S5, WA6ZTY S8. 80M -- K5CM S9 + 20, W8KSE S7, W6OQI S4. 160M -- K5CM S7. Thanks to all transmitting stations for running these FMTs.
|Method: FLEX-1500 with GPSDO tuned about 500 hertz from target in USB. Plotted audio samples with Spectrum Lab in Excel. Took average of GOOD samples plus DDS error and added to VFO frequency.|
Soapbox: K5CM on 40M and W6OQI on 80M were very weak but had enough signal to get a rough sampling. Thanks to all for the FMT!
|Method: FLEX-1500 with GPSDO tuned about 500 hertz from target in USB. Plotted audio samples with Spectrum Lab in Excel. Took average of GOOD samples plus DDS error and added to VFO frequency.|
Soapbox: K5CM on 40M and W6OQI on 80M were very weak but had enough signal to get a rough sampling. Thanks to all for the FMT!
|Method: Ten-Tec ARGO V calibrated to WWV, audio beat with digital audio generator to headphones and/or zero center meter, calculate final values.|
Soapbox: Signals in noise level to S9+. Nothing above noise on 160M. Thanks to all transmit stations.
|Method: 2 channel diversity reception with H & V antennas. Audio beat method with RF Reference from DDS described in March/April 2013 QEX.Rb local reference calibrated vs Tbolt GPS. Two channels processed in parallel using SL. FFT 8K, 11K sample rate - writing measured data to disk once per second. Depends on high SNR to improve interpolated resolution to mHz levels. Post processed using spreadsheet that throws out most of the data.|
Soapbox: Good fun as always. Very good signals here in KS. Connie lifted the 75A4 off the table on 80 and 160M to the point where the overload may have bothered the data some. The AGC in that one is not all that good. We shall see. I much prefer this FMT format. It is fast and you do not have to hunt around for the signals so much. Also the setup need not be changed to accomodate new formats. Again a great time and I have a lot of new data to try out various processing methods. My thanks to all the Tx stations. -john k6iql
|Method: Flex Radio Systems 1500|
Soapbox: Qrm on 40 was terrible, making it difficult to read callsigns.
Apple iPad Mini
Cool Edit 2000|
Soapbox: I had to work, but was able to run out to my car to monitor the test. I could only hear K5CM. I set my FT-817 to 7055 USB using channel mode, to make sure I was zeroed on 7055. I recorded the audio on my iPad, then used Cool Edit 2000 to analyze the tone. I also recorded WWV at 10 MHz to use as a reference to help factor out error. It's very crude, but worked reasonably well.
|Method: AM mode, radio audio beat with HP3225A (ref to GPSDO) for freq determination. Spectrum Lab for sub Hz resolution.|
Soapbox: Had to use laptop and sound card varied around 1 mHz per minute. Great time and was able to copy all stations (although 160M was S zero). Thanks Connie
|Method: Icom 756 Pro III, apple I-Phone with audio generator app "FreqGen"|
|Method: Yeasu FT-100oMP MK5, Icom IC-7410|
Soapbox: The test was fun. I'm looking forward to find out how close my reading were. I noticed some fading at my QTH. I just used my ear to find the zero point.
|Method: zero beat against a secondary standard|
Soapbox: K5CM on 160m ranged from -10dB below the noise to +6dB above the noise. I appreciated the time spacing between bands. Great job all!
|Method: Disciplined Signal generator. Spectrum Lab for analysis.|
Soapbox: 7055 Sounded like the international CW CQ frequency
|Method: IC-7000 calibrated to WWV on 20MHz. FlDigi in analysis mode running on a very old Dell laptop with internal soundcard. Both the laptop and rig were turned on 4 hours before the test. Antenna 135' NE/SW sloper.|
Soapbox: My first FMT and not my last. Didn't hear anything on 40M. 80 was solid, I could hear K5CM on 160 during the call up but then a deep fade took him completely out and never heard him again.
|Method: FT-817 receiver. Reference source was Schlumberger 4031 locked to Z3801 GPSDO used to generate a reference carrier at the mominal (published) frequency. Spectrum Lab was used to measure the audio frequency of both the test and off-air signal.
WWVB 2.5 MHz AM was used as an audio calibration reference and, with the signal generator, a sanity check to assure that the generated signal was on the intended frequency.|
Soapbox: Relatively little Doppler shift on K5CM on any band, noticeable Doppler shift on the other three on 40 meters. Minimal observed Doppler on any signal on 80 and 160. Signals into UT on 40 were somewhat weak from 6-land and had quite a bit of QSB from W8KSE. K5CM seemed to be just the right distance on all bands at this time of day.
|Method: Yaesu FT-950 with fldigi software, cal. against WWV. Cushcraft A3S w/ 40M add-on for 40, full wave 160M loop on 80 and 160.|
Soapbox: Overall signals were very good on all bands. Exceptions: W8KSE was a bit tough on 40 due to proximity; W6OQI weak on 80 but perfectly copyable (albeit with digital QRM). I've missed a few FMTs, hopefully I didn't embarrass myself too badly. Thanks to all the stations for putting on a good show.
|Method: FT847, speclab|
Soapbox: heard all stations well, hope to be close. the hour goes by fast.
|Method: FT-950/IF-2000 running HRD6 into RF Space SDR-IQ running SpectraVue. SpectraVue Calibrated to WWV @ 10 Mhz. FFT/BLK = 65536. Span = 5 KHz.|
|Method: Listened using a Yaesu FT897D radio with an LDG AT-987 autotuning using a 40m dipole made from 2 40m MFJ Hamtenna's.
Used the same antenna for 80m and 160m letting the autotuner tune for the band.|
Soapbox: First time I tried this. It was fun listening for the signal
|Method: ICOM R75 Receiver|
Soapbox: First time doing this.
|Method: Used FT-897, for CW, also used WinRadio G313, for the frequency measurement. FT-897 was connected to a SWL antenna. The G313 was connected to a HF dipole, for 80M and 40M, also used a vertical for 160M. Calibrated to WWV and CHU, after the test. Signals were fair to good.|
|Method: HP3586C, Spectrum Lab|
Soapbox: Thanks for the FMT.160 meters no signal was heard.
|Method: HP Z3801 used to lock a HP 8640b signal generator to the GPS. Beat frequency monitored by FT-847 radio in AM mode. Spectrum lab used to measure audio beat frequency.|
Soapbox: Thanks for the FMT. All signals heard well (G5RV) and identified on the waterfall. Last minute decision to try Spectrum lab software did not leave time to calibrate or record readings. Hope to have software figured out and set up properly next time.
|Method: HP 3586B SLM|
Soapbox: Missed call up from K5CM on 40 and did not hear W6OQI on 40. Overall, good test. Remaining signals were certainly strong. Thanks to all who make this possible. Lots of fun!
|Method: Pixel Loop into Flex-1500 in CWU mode, GPSDO locked. ~600Hz tone via virtual cable to Spectrum Lab. Selected likely, most consistent, FFT bins for SpecLab to interpolate.|
Soapbox: Sunset 2 hours before FMT here on West Coast so CHU showed only small amount of doppler. Last Nov. I selected many bins too high, so selected lower likely bins this year.
|Soapbox: good signals, all bands|
|Method: A cold K3 -> was not warmed up. My ear and Spectrum Lab.|
Soapbox: I love doing these but didn't realize it was Wednesday and fired up the gear well after W5CM on 40 meters was done. So missed the 1st session and my osc was drifting as the room and rig warmed up. Kept flipping back and forth to wwv 5Mhz to calibrate while drifting down. Next time I hope to be paying better attention to the date and time!
|Method: Elecraft k3, HP signal generator injecting sig into passband. Linux/Baudline measuring delta of unknown and HP reference.|
Soapbox: First time. Hope I did this correctly! Lots of fun anyway-
|Method: 80/160 dipoles, SLM receiver, generator triggered scope to find signal in 20 Hz bw, IF measured with Spectrum Lab vs. GPS and WWV to estimate Doppler.|
Soapbox: Copied all but W8KSE 40M. Fun FMT!
|Method: FT950 transceiver, Palstar AT4K tuner, 135' long wire SignalLink USB with FLdigi waterfall.|
|Method: Kenwood TS570 using K1JT FMT program. Tried using Speclab and spreadsheet, but too much difference, so decided to enter the K1JT FMT results.|
Soapbox: Good signals from all stations. 160 had some fading and one of the 80M signals had terrible QRM in the middle of the key down period.
|Method: Kenwood TS-480 with DigiPan v2.0. Dipole antennas.|
Soapbox: All signals measurable in STX. Doppler minimal. W6OQI very weak on 40m. Thanks to all participating stations.
|Method: Kenwood TS-850, trapped 80/40 dipole, 160M quarter-wave sloper. Used LSB mode, and zero-beat the sigs best I could.|
Soapbox: Heard everyone's signal very well on the gulf coast of Texas.
|Method: Harris RF-350K transceiver. HP3325A function generator locked to GPSDO.
Soapbox: weak signals on 40 and 160 but very strong on 80.
|Method: Icom IC-706MkIIg, Spectrum Lab software, WWV, CHU and a 910 KHz broadcast station for references and Lady luck.|
Soapbox: Lots of doppler shift on 40 and 80 M. 160 M signal was doppler free. W6OQI signal on 40 M was non existent and not sure what I measured. Propagation was good, but the bands seemed noisy. Lots of fun, thanks ARRL, K5CM, W8SKE, W6OQI and WA6ZTY.
|Method: Elecraft K3 + K3EXREF + G3RUH OCXO/GPSDO + Spectrum Lab + 80m horizontal loop.|
Soapbox: On 80m there was apparently intentional QRM by RTTY, data, and carrier pulses at times. All the stations had good measureable signal levels. Most signals had decent cores to centroid on. W6OQI on 80m had the largest, most asymmetrical signal dispersion with no central core to measure but a decent "peak" in the spread.
|Method: A K3 with P3 used to detect signal in CW mode. After warming for 24 hours, the K3's external reference is removed to prevent step change in frequency during the FMT.
Two thunderbolt referenced DDS signals injected into receive path about 25 Hz below and above the K3 dial frequency. DDS frequency is set by Visual C program that reads the K3 dial and sets each DDS. DDS and dial frequency are saved to a log file for latter analysis. DDS amplitude adjusted to about the same amplitude as received signal.
Loop antenna used for most signals because of good S/N ratio.
Audio frequencies measured with Spectrum Lab. Fx calculated using the three measured audio frequencies and the actual DDS frequencies injected above and below the unknown frequency.|
Soapbox: W8KSE's 40 meter signal week (S3), other signals strong. Missed placing WA6ZTY on my list so did not measure:( I made several tweaks and adjustments to my dual DDS since the last FMT. Have many changes pending depending on the results of this FMT. Thank you K5CM, W8KSE, W6OQI, WA6ZTY for this changeling and fun activity.
|Method: Flex 1500 locked to GPS, Spectrum Lab for data acquisition.
CHU was 7850000.1|
Soapbox: I received onlly weak signal from K5CM. Bab propagation conditions with East Europe on 40 m.
|Method: dipole > TS850 (500 Hz CW filter) > laptop recording at 8200 s/s. CoolEdit for initial guess followed by FFT techniques to get audio frequency. Average callup and keydown portions then correct for known offsets in the radio.|
Soapbox: Pretty good signals here, some powerline QRM. W6OQI seemed weaker than usual. Thanks to all for another fun test.
|Method: Thunderbolt GPS receiver feeding 10 MHz reference to Fluke 6010A sig generator. Receiver in AM mode to detect beat note between generator and unknown signal. Spectrum Lab FFT software to measure audio tone from receiver. QuattroPro spread sheet to calculate averages and to graph the amplitude/frequency data.|
Soapbox: Propagation seemed fairly stable (I think Kp was 0 or 1) but W6OQI's 80 m signal was very weak in the noise at my QTH. A good test! Thanks to all involved in organizing and presenting this FMT.
|Method: Direct measurement using Yaesu FT-920 with TCXO.|
Soapbox: Thanks to the control stations for coordinating the test!
|Method: ICOM 706 with 1 Hz. digital frequency step. In CW and CW Rev modes, measure audio output ~ 600 Hz.with frequency counter to get dial reading interpreted to nearest ~ 1/10 Hz. Calibration Data from WWV (10/15 or 20 MHz.) used to measure the step size (Hertz/Integer) and get the actual frequency from the "dial frequency".|
Soapbox: Thanks again to all who provided us with the FMT--K5CM and the "crew". Well done !
|Method: Elecraft K3; K3EXREF External Reference Input for the K3; FEI Communications FE-5680A 10MHz Rubidium Disciplined Oscillator (input to the K3EXREF). Interpolated using zero-beat method.|
Soapbox: Great fun! Thanks to all the fmt stations.
|Method: Rig: Kenwood TS-2000; Ant: 31' vert/autotuner; Soundcard: SignaLink USB; Software: HRD for frequency adjustment (1 Hz increments), Spectran for measuring 600Hz audio sidetone. After 3 hr. warm up, established WWV frequency correction factors for rig at 2.5, 5 and 10 MHz, zerobeating to 600Hz sidetone in CW(USB) mode. For FMT test, adjusted each FMT frequency for 600Hz tone; read display frequency and applied WWV correction factor.|
|Method: IC-7800 locked to Rubidium oscillator into Spectrum Lab|
Soapbox: Doppler was "relatively" tame for the FMT--- good measurable signals from all stations. Weakest were W8KSE on 40 M (skip) and W6OQI on 80 M. Tnx to all the transmitting stations for a job well done!
|Method: Homebrew 30 MHz GPS disciplined oscillator used as clock for a homebrew AD9851 DDS using Arduino PrecisionSignalGen_v1_1.ino software. The signals were measured with Spectrum Lab software.|
Soapbox: All signals were moderately strong except for K5CM’s 7055 KHz run which was barely above my noise level. At the last minute I discovered a very strong receiver spur on 1845 KHz. The station receiver was hastily replaced with a FT817.
|Method: TS-480HX w/TCXO, Griffin iMic in thermal equilibrium. K1JT's fmt software calibrated to WWV and CHU.|
Soapbox: First-time participant. All signals loud here except 160m.
|Method: WWV 20MHZ. SDR-14 Dipole|
Soapbox: QRM (Intentional ?? ) Wish we had direction finders to track them down.
|Method: GPS stabilized Flex 5000, Fldigi|
|Method: I used a Flex 3000 and Fldigi in frequency analysis mode. My antennas were dipole on 160 M, 80 M, and 40 M.|
Soapbox: I was glad to be able to copy all stations for this test. Good conditions here is East Texas.
|Method: Flex 5000, HP3336, Delta Reference method.|
Soapbox: Lots of interference on 80m - had to delete outliers
|Method: HP Z3801B GPS disciplined oscillator used as frequency standard. HP 3586B selective level meter used for measuring incoming signal. I.F. output of HP 3586B feed to computer running Spectrum Lab for fine resolution.|
Soapbox: All signals were good in Southern California except for no signal from K5CM on 160 meters
|Method: JST-245 receiver. Incoming signal beat with HP 83732 synthesizer divided by 10 and referenced to GPS. 500 Hz beat note displayed on a polar detector against 500 Hz from GPS stabilized oscillator.|
Soapbox: QRM on K5CM's 40 meter signal. Other signals weak except for W6OQI on 80 meters which was S9+20. K5CM's 160 meter signal was S1 during call up and faded to nothing before he started the test signal.
|Method: Flex 1500 radio tuned by ear to zero beat|
Soapbox: Not the best way to do it! Next time I'll try some other methods.
|Method: HP 3586B Selective Level Meter with GPS frequency standard.|
|Method: IC-718 with indoor wire antenna. Running FLDIGI in Frequency Analysis mode on desktop Windows 7 computer. Calculated error function using WWV. Applied error correction to measured signals.|
Soapbox: Weakest signals in years. I heard everyone on 40 meters. On 80 meters, everyone was weak to inaudible , but a trace was visible on the waterfall display. I could neither hear or see K5CM's signal on 160, so I just guessed at what might have been a brief trace.
|Method: Icom IC-706MKIIG with N6GN 30MHz phase-lock to a Shera GPS reference. Antenna was a 105-ft long dipole over the house. Processing was based on the waterfall in the Spectrum Lab program, looking for patterns common with WWV and CHU, as seen before and after the test.|
Soapbox: The propagation was generally good. I struggled a bit with W8KSE on 80-m due to QSB, but otherwise signals were fine. I tried recording a WAV file, as well as making judgements by watching the real-time spectrum waterfall. This was all using DL4YHF's Spectrum Lab program. The recording did not do anything very useful, in the end. My real-time answers seemed as good as those that came from the WAV file. Not a surprise, as it was the same data. Neither method checked that I wrote down the correct receiver dial setting! Thanks much to the stations for the nice signals and good coordination. Great job!
|Method: No equipment used except my ears and the dial of my 756Pro3.
Confirmed calibration with WWV, then used CW mode to beat received audio against the CW sidetone.|
Soapbox: Thanks to all for running this event. This is my 2nd FMT, still doing it by ear. Maybe next time I'll have more sophisticated equipment. W8KSE on 40M was very weak here (too close to me) but everyone else had good sigs.
|Method: RF Space NetSDR disciplined by Trimble T'bolt, Pixel Technology RF PRO-1B magnetic loop antenna. Data were recorded to disk and analyzed in custom software written in C++ and MATLAB.|
Soapbox: All signals were received with workable S/N ratios. The ionosphere seemed quite settled judging by the width of the Doppler spreads and the Kp index. As usual, the West Coast stations were a tough call along with W8KSE on 40 M. Many thanks to Connie and all who transmitted.
|Method: Ten Tec Paragon transceiver, Timewave DSP-59+ Audio Filter, Mix-W software waterfall display used for signal spotting and reference. Correction factor using WWV @ 2.5 & 5 MHZ as reference directly after FMT transmissions, and subtracting transceiver's apparent CW setting offset of 700 Hz.|
Soapbox: Transceiver approximately 30 Yrs. old and uncalibrated. My first Hack at this, hopefully the results aren't too embarrassing!!!
|Method: Average readings on SDR|
Soapbox: Connie's sigs were good; W6OQI & W8KSE in the noise @ this QTH, but got some readings.
|Method: WJ-8718 receiver locked to Rb standard, DL4YHF's Spectrum Lab software.|
Soapbox: Good signals except for 160m. Nothing by ear on 160, but a trace showed up on the always-amazing Spectrum Laboratory. Thanks to all the transmitting stations and to ARRL for sponsoring.
|Method: Conditions were quite good this evening. A bit of qrm on 80 but still could get decent sigs. Using a 3336, 3586, trimble combination and a 7600 for spotting. Can get about 10 hz with 7600 and then use the hp toys. Thanks again Connie for your work in our FMTs.|
|Method: HP 3586B SLM with Spec Lab for tuning indication and 80 M dipole.|
Soapbox: W4KKL and I had a nice visit while listening for the signals. W8KSE was not heard in VA tonight.
|Method: Kenwood TS-950SDX, HP8647A Sig Gen, Z3801A GPS Freq Standard.
I set the signal generator about 500-700 Hz low to beat with the FMT CW signal using AM mode on the TS950SDX. I then analyzed the beat frequency tone using Spectrum Lab and post processing.|
Soapbox: Atmospheric Conditions were pretty bad with lots of QRN and QSB. I could hear all of the stations on 40 meters except W6OQI. He is about 90 miles away and the propagation is such that I can't hear him. On the other hand, he was the only one I could hear on 80 meters reliably. K5CM and 160 meters was out of the question.
|Method: I use a TS-570 radio, frequency counter, AF/RF signal generator. The radio, counter, and sig-generator interface to a computer. Only the initial frequency is entered via a web-page interface. Final frequency is reported via the web-page. Software is home brew, with some libraries from Hamlib.org and Agilent Technologies, Inc.|
Soapbox: I use a computer assisted fully automated method. If I enter a starting frequency +-150Hz of the unknown signal, the computer program will find the signal. The process is available via a web-page. The processing for today’s test was done from an iPad tablet. I do not need to be present in the radio room. The process can be initiated anywhere on the web (www). The speed of measurements is in the 40-70 seconds range. I missed the first three signals on 40M due to a malfunction in the CPU between my ears! Thanks for the opportunity. 73 Ed, WA6RZW
|Method: Zerobeat by ear against signal generator. If I'm within a Hz, it was just luck!|
Soapbox: Couldn't hear a hint of K5CM on 160m, but strong elsewhere. Copied everyone else though W8KSE was weak on both bands here.
|Method: Receive HP3596B, Calibration HP3336B, Spectrum Lab Version V2.78b16
Antenna trap vert 40-10 meters|
Soapbox: My first attempt at this so my expectations are not very high.
|Method: I used GPS-locked HP3586B, 80m dipole, miniwhip, Spectrum Lab.|
Soapbox: This FMT was the greatest! 8 transmissions kept me busy. I had better luck creating a .wav file this time. I have all 8 signals on one uninterrupted file, and tuned all signals in within +11 Hz of the Tracking signal from the HP3586B. I don't think the Tracking signal gets mentioned very often. I wonder if there are some negatives about it that I don't know. Thanks to all involved. -WBØLXZ EM27pj
|Method: Icom R-1000 calibrated to WWV|
|Method: IC-7200; USB Cable to HP 3.4 GHZ Computer; Ham Radio Deluxe w/DM780|
Soapbox: I had fun and enjoyed the challenge.
|Method: Heterodyne against House Standard. Receiver used is a FT-817. capturing audio with Spectrum Labs and post processing using Excel spreadsheet.|
Soapbox: Poor propagation conditions, as usual due to gray line, and all were quite weak (or almost non-existent) save for W6OQI on 80m here in San Diego, CA. Had QRM on 40 & 80 meters along with much QRN on 160m. Aside from all that it was a fun time.
|Method: Our receiver was a FT-857D with a random length doublet running in AM mode. We set a GPS locked signal generator to approximately 1 kHz higher in frequency, then measured the heterodyne mix with a PC running Spectran. Spectran was calibrated using an external audio generator that was verified with a counter.|
Soapbox: This FMT operation was jointly run by Tom Curlee, WB6UZZ, and Rich Belansky, KG6UDD. Both of us being time and frequency nuts, it was highly interesting to watch the received frequency move around while we asked ourselves,"Is this us or the signal?" Many improvements are planned for next time, like a narrow 1 kHz bandpass filter, a synthesized 1 kHz calibration generator, and a switch/interconnect box to tie everything together. Lots of fun all around.
|Method: I received FMT signals on an IC-756 Pro with a dipole antenna and I used the time averaging methodology suggested by Phil, W1PW. I added a plenum chamber with a couple of 12V fans to the top air vents on the IC-756 Pro to circulate air and help stabilize the temperature of the rig.|
Soapbox: The QRM at my QTH was high so I was only able to hear W6OQI on 80 meters. This was my first attempt to measure the FMT signals.
|Method: Yaesu FT-1000MP in CW mode with spot switch on, tuning for zero beat as best I can. On 40M I then compared to an HP5334A counter for fun.|
Soapbox: This is fun!