November 15, 2012
Actual Radio Frequencies (Hz):
K5CM/W8KSE/W6OQI/WA6ZTY All (<=1 Hz):
AB1IX, AB4RS, K5CM, K5RKS, K6APW/7, K6BZZ, K7HIL, KM6QX, N2ADR, N4AU, N5LBZ, N8OQ, N9YKE, NF6Z, VE3OAT, W2FD, W3JW, W4JLE, W4RYF, W4UK, W6IHG, W6OQI, W7PUA, W8XN, W9ZB, WA6UAT
K5CM 160 (<=1 Hz):
AB1IX, AB2WB, AB4RS, AB4T, AF9A, K0MZ, K1GGI, K5CM, K5RKS, K6APW/7, K6BZZ, K6IQL, K6OQK, K7HIL, K8DJR, KD2BD, KD5MMM, KK4A, KM6QX, KU4PY, KX0O, N0PFE, N2ADR, N3FG, N4AU, N5DM, N5LBZ, N8OQ, N9YKE, NF6Z, NO5K, VE3OAT, W0HBK, W2FD, W2KKJ, W3CSW, W3JW, W4ENN, W4JLE, W4RYF, W4UK, W6IHG, W6OQI, W7JWM, W7KMV, W7PUA, W8XN, W9HLY, W9TJ, W9ZB, WA1ABI, WA1LWS, WA2DVU, WA6UAT
K5CM 160 (>1 to <=5 Hz):
AA9NF, K6UM, KB1MH, W3FAY
K5CM 160 (>5 to <=10 Hz):
AG2M, N7EP, NJ7P, VE2IQ
K5CM 160 (>10 Hz):
AA6LK, N5KAE, W7KPZ, WA6RZW, WA9ZPM, WB5UPS, WG0S
K5CM 80 (<=1 Hz):
AA6LK, AB1IX, AB2WB, AB4RS, AB4T, AF9A, K0MZ, K1GGI, K5CM, K5RKS, K6APW/7, K6BZZ, K6HGF, K6IQL, K6OQK, K6UM, K7HIL, K7TT, K9KK, KD2BD, KD5MMM, KK4A, KM6QX, KU4PY, KX0O, N0PFE, N2ADR, N4AU, N5LBZ, N7EP, N8OQ, N9YKE, NF6Z, NO5K, VE2IQ, VE3OAT, W0HBK, W2FD, W2KKJ, W3CSW, W3FAY, W3JW, W4ENN, W4JLE, W4RYF, W4UK, W6IHG, W6OQI, W7JWM, W7KPZ, W7PUA, W8XN, W9TJ, W9ZB, WA1ABI, WA1LWS, WA6UAT, WB6DCE
K5CM 80 (>1 to <=5 Hz):
AA9NF, K8DJR, KB1MH, N6SD, WB5UPS
K5CM 80 (>5 to <=10 Hz):
K5CM 80 (>10 Hz):
AG2M, N3FG, N5KAE, NJ7P, W6SWC, WA2DVU, WA6RZW, WA6ZTY, WA9ZPM
W8KSE 80 (<=1 Hz):
AA6LK, AB1IX, AB4RS, AB4T, AF9A, K0MZ, K1GGI, K5CM, K5RKS, K6APW/7, K6BZZ, K6IQL, K6OQK, K6UM, K7HIL, K7TT, K9KK, KD2BD, KD5MMM, KM6QX, KX0O, N0PFE, N2ADR, N3FG, N4AU, N5LBZ, N7EP, N8OQ, N9YKE, NF6Z, NO5K, VE2IQ, VE3OAT, W0HBK, W2FD, W2KKJ, W3FAY, W3JW, W4ENN, W4JLE, W4RYF, W4UK, W6IHG, W6OQI, W7JWM, W7KPZ, W7PUA, W8XN, W9TJ, W9ZB, WA1ABI, WA1LWS, WA2DVU, WA6UAT, WB6DCE
W8KSE 80 (>1 to <=5 Hz):
AB2WB, K8DJR, N6SD
W8KSE 80 (>5 to <=10 Hz):
AA9NF, AG2M, KB1MH, W6SWC, WB5UPS
W8KSE 80 (>10 Hz):
KK4A, KU4PY, N5KAE, NJ7P, W7KMV, WA6RZW, WA9ZPM
W6OQI 80 (<=1 Hz):
AA6LK, AB1IX, AB4RS, AF9A, K0MZ, K5CM, K5RKS, K6APW/7, K6BZZ, K6IQL, K7HIL, K7TT, K9KK, KD2BD, KD5MMM, KM6QX, KX0O, N0PFE, N2ADR, N4AU, N5DM, N5LBZ, N6SD, N7EP, N8OQ, N9YKE, NF6Z, NO5K, VE2IQ, VE3OAT, W0HBK, W2FD, W2KKJ, W3FAY, W3JW, W4ENN, W4JLE, W4RYF, W4UK, W6IHG, W6OQI, W7KMV, W7KPZ, W7PUA, W8XN, W9TJ, W9ZB, WA1ABI, WA1LWS, WA6RZW, WA6UAT, WA6ZTY, WB6DCE
W6OQI 80 (>1 to <=5 Hz):
AA9NF, AB2WB, K1GGI, K6OQK, K6UM, K8DJR, KB1MH, W6SWC
W6OQI 80 (>5 to <=10 Hz):
W6OQI 80 (>10 Hz):
K6HGF, KK4A, KU4PY, N5KAE, NJ7P, W7JWM, W9HLY, WA9ZPM, WB5UPS
K5CM 40 (<=1 Hz):
AA6LK, AB1IX, AB2WB, AB4RS, AB4T, K0MZ, K1GGI, K4JAF, K5CM, K5RKS, K6APW/7, K6BZZ, K6IQL, K6OQK, K6UM, K7HIL, K7TT, K9KK, KK4A, KM6QX, KU4PY, KX0O, N0PFE, N2ADR, N3FG, N4AU, N5LBZ, N7EP, N8OQ, N9YKE, NF6Z, SV1XV, VE2IQ, VE3OAT, W2FD, W3CSW, W3JW, W4JLE, W4RYF, W4UK, W5NZ, W6IHG, W6OQI, W7JWM, W7KPZ, W7PUA, W8XN, W9ZB, WA1ABI, WA1LWS, WA2DVU, WA6UAT, WA6ZTY
K5CM 40 (>1 to <=5 Hz):
AG2M, K8DJR, KB1MH, KD5MMM, N6SD, NO5K, W0HBK, W9HLY
K5CM 40 (>5 to <=10 Hz):
K5CM 40 (>10 Hz):
N5KAE, NJ7P, W4ENN, WA9ZPM, WB5UPS
W8KSE 40 (<=1 Hz):
AA6LK, AB1IX, AB4RS, AB4T, K1GGI, K4JAF, K5CM, K5RKS, K6APW/7, K6BZZ, K6OQK, K6UM, K7HIL, K7TT, K9KK, KM6QX, N2ADR, N3FG, N4AU, N5LBZ, N6SD, N7EP, N8OQ, N9YKE, NF6Z, NO5K, SV1XV, VE2IQ, VE3OAT, W2FD, W3JW, W4ENN, W4JLE, W4RYF, W4UK, W5NZ, W6IHG, W6OQI, W7JWM, W7KMV, W7PUA, W8XN, W9ZB, WA1ABI, WA6UAT, WA6ZTY
W8KSE 40 (>1 to <=5 Hz):
AG2M, K8DJR, KD5MMM, N0PFE, W0HBK, W7KPZ
W8KSE 40 (>5 to <=10 Hz):
W8KSE 40 (>10 Hz):
KK4A, KU4PY, KX0O, N5KAE, NJ7P, W6SWC, WA6RZW, WA9ZPM
W6OQI 40 (<=1 Hz):
AA6LK, AB1IX, AB4RS, AB4T, AF9A, K1GGI, K5CM, K5RKS, K6APW/7, K6BZZ, K6HGF, K6OQK, K6UM, K7HIL, K7TT, K8DJR, K9KK, KM6QX, KX0O, N0PFE, N2ADR, N3FG, N4AU, N5LBZ, N6SD, N7EP, N8OQ, N9YKE, NF6Z, NO5K, VE2IQ, VE3OAT, W0HBK, W2FD, W3JW, W4ENN, W4JLE, W4RYF, W4UK, W6IHG, W6OQI, W7JWM, W7KPZ, W7PUA, W8XN, W9TJ, W9ZB, WA1ABI, WA6RZW, WA6UAT, WA6ZTY
W6OQI 40 (>1 to <=5 Hz):
AG2M, K4JAF, KD5MMM, W7KMV, WA1LWS, WB6DCE
W6OQI 40 (>5 to <=10 Hz):
W6OQI 40 (>10 Hz):
AA9NF, KK4A, KU4PY, N5KAE, NJ7P, W6SWC, WA9ZPM, WB5UPS
WA6ZTY 40 (<=1 Hz):
AA6LK, AB1IX, AB2WB, AB4RS, AB4T, AF9A, AG2M, K1GGI, K5CM, K5RKS, K6APW/7, K6BZZ, K6HGF, K6IQL, K6OQK, K6UM, K7HIL, K7TT, K9KK, KB1MH, KD5MMM, KM6QX, KX0O, N0PFE, N2ADR, N3FG, N4AU, N5LBZ, N6SD, N7EP, N8OQ, N9YKE, NF6Z, NO5K, VE2IQ, VE3OAT, W0HBK, W2FD, W3FAY, W3JW, W4ENN, W4JLE, W4RYF, W4UK, W6IHG, W6OQI, W7JWM, W7KMV, W7KPZ, W7PUA, W8XN, W9TJ, W9ZB, WA1LWS, WA6UAT, WA6ZTY, WB6DCE
WA6ZTY 40 (>1 to <=5 Hz):
WA6ZTY 40 (>5 to <=10 Hz):
WA6ZTY 40 (>10 Hz):
K4JAF, KK4A, KU4PY, N5KAE, NJ7P, W6SWC, WA6RZW, WA9ZPM, WB5UPS
Result Details (n=79):
|Method: HP Z3805A 10MHz reference, Marconi 2019 HF synth, HP 3325A LF synth, HP 54601A o'scope, FT-847 in AM/narrow mode, 5BTV antenna, Vista laptop running SpecLab, DigiPan for spotting, EZGPIB controlling Prologix USB-GPIB to set up and interrogate instruments, GPSCon for monitoring Z3805A; set the 2019 to produce a ~400 beat tone, and tune the 3325A for minimum phase slip and record its frequency. This time, because of weak signals, I largely relied on SpecLab to save off the ~400Hz beat tone to .wav files and later exported data to spreadsheet to tease out data for submission.|
Soapbox: Another well run event; thanks all. Quiet bands, but generally weak signals with much multipath distortion; K5CM-160M very weak, not sure I was on the correct signal.
|Method: kenwood ts-590 zero beat|
|Method: Racal RA1772 receiver. HP 3336B disciplined by LPRO. Loosely coupled 3336B output to receiver with "leaky" coax and loads of attenuation. Adjusted 3336B for zero beat on signal. Took average of several readings.|
Soapbox: My sincere thanks for such a superb test. W6OQI was very hard to copy on 80 with lots of QRM... that measurement was more guesswork than anything. K5CM signal was huge on 40 and 80, but difficult to hear and subject to long fades on 160. Reasonable copy on the other stations. It is amazing how quickly that hour goes by!
|Method: ICOM 706MKIIG with 80-meter doublet connected to Dell Inspirion 531 (Windows Vista) by means of a SignaLink USB sound card-radio interface. All equipment was warmed up for 12 hours prior to the test. The transceiver display was calibrated just before the test using WWV as described by NAX (QST November 2006). The test signals were zero-beat and recorded using Spectrum Lab software (Ver. 2.76 b8) and frequencies calculated using EXCEL. Because of weak signals at my QTH, switched to audio coupling using computer sound card after the first transmission.|
Soapbox: Heard all of the stations on both bands, though W8KSE & W6OQI were barely discernible on 40m and I was troubled by strong QRM on all but 160m. Not certain yet of the consequences of switching equipment during the test. As in previous FMTs, had a great time, learned more, and greatly appreciate all of the time and effort put into making these tests possible.
|Method: Delta reference method. Tuned RF with Yaesu FT-897d, controlled by Ham Radio Deluxe. Injected known reference signal generated by a HP 3336C synthesizer locked to the 10 MHz reference from a Trimble Thunderbolt GPS receiver. Recorded and analyzed audio using SpectrumLab.|
Soapbox: Enjoyable as always. Could barely make out W6OQI's 40 m signal, but SpectrumLab handled it quite well. All other signals were quite good, but K5CM's 160 m signal had some deep fades. Thanks to those who make this possible.
|Method: K3 with 40M vertical antenna,WSPR/FMT software for rig control, receiver calibration, data acquisition, and calculations. Spectrum Labs software for monitoring.|
Soapbox: Thanks to all who helped with this FMT. This was my first use of the WSPR/FMT software and it held some surprises.
|Method: HPSDR Mercury with 10MHz OCXO calibrated to WWV.|
|Method: KX3 audio to PC soundcard then used Spectran FFT with WWV & CHU as reference measurements for number crunching.|
Soapbox: Workable signals from all FMT stations. Was fiddling with KX3 controls so hope I didn't mess up reading/scribbling down measurment data. Thanks to all participating ARRL FMT stations and organizers for putting on this fun & educational event. CUL, 73 George AG2M
|Method: I tuned my local oscillator to the FMT RF signal and matched the audio pitches by ear. The local oscillator signal was mixed with the RF signal and fed into a Heath IM-4100 counter clocked with an HP 10544A oven crystal oscillator. The Atlas 210X rig was used for 40 and 80 meters and the Hallicrafters SX-73 receiver was used for 160 meters. I did not hear W8KSE on 40 at all, K5CM and W6OQI were both just below the noise level. WA6ZTY had a good S9 signal on 40. All three 80 meter signals were good with K5CM sounding as a local station here in KS. W8SKE was about 20 over and W6QOI a good S9. K5CM had a very strong signal on 160, again sounding as a local station pegging the S meter. A big thank you to all who made this FMT possible.|
Soapbox: All of my equipment used in this FMT is 30 or more years old and is entirely made in the USA. I like doing the FMT by ear the old fashioned way. I would suspect that the 40 meter tests here were not very accurate because of the very weak signals except for WA6ZTY.
|Method: Heterodyne with accurate HF oscillator, detect AM beat, analyze with SpectrumLab.|
Soapbox: Had to fish for W6OQI on 80, and W8KSE closer to the noise than others. Thanks to the organizers for a good test.
|Method: Flex 3000 tranceiver|
|Method: For transmitting the FMT I use an HP-Z3801 GPS frequency source which clocks a HP-3336b. A 10 db transistor amp follows and drives a 12by7 / pair of 6146. The final amp runs about 250 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: 160 meter Vertical, 80 meter dipole slopping down from a 140' tower, 40 meter dipole hanging between two 80' towers. 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: All stations were well above the noise and easy to copy. It does seem that 40 meters had developed a significant skip zone early in the evening making copy difficult for some station. I was concerned that we were going to have unsettled conditions as a result of several M class flares, but fortunately things settled down and the K index was at a 1 at show time. Thanks to ARRL for QST space, all the other TX stations, as well as the many participants.
|Method: Compare two audio tones from receiver. One from "off air FMT station" and the other from an injected RF signal. The injected signal comes from HP3336B which is using external 10Mhz clock which is GPS disciplined. This time, I used revised home-brew software which takes 512K samples at a sampling rate of 8K samp/sec. Then I pass all these samples -- in one big hunk -- to a single Fast Fourier Transform [FFT] in order to determine the audio frequency delta between the two tones from the receiver. I assume that the HP3336B dial frequency is "correct". I then apply delta audio frequency from FFT to get frequency of unknown FFT station. I repeat this method for each of the 8 FMT station/band pairs.|
Soapbox: 40m signals had a lot of QSB using my marginal inverted V antenna. Signal strength was between S3 and S7 for the various 40m FMT stations. ---- 80m signals varied from S2 to +20db over S9 using 80m sloper. ---- K5CMs 160 signal was S5 using non-resonant hunk of wire about 70 feet long as a kludge antenna. Thanks to the FMT xmitting stations for running a GREAT FMT.
|Method: Ten-Tec Argonaut V calibrated against WWV, receiver output inot audio hybrid combiner with digital audio generator. Dial offset calculated to adjust to final frequency.|
Soapbox: Signals very good to fair. QSB and short term instabilities noted. Thankfully very low 160M noise.
|Method: Thunderbolt GPSDO, HP-3336B synthesizer, Flex-1500, SpectrumLab, Win7
laptop, attic 40 meter dipole|
Soapbox: Always a challenge, and a lot of fun. Six signals were Q5, two were very faint traces. Thanks to all for an extremely well run FMT.
|Method: Audio Beat Method using Rb stabilized home brew DDS synthesizer as
RF reference. GPS calibrated Rb prior to FMT.Spectrum Lab to determine RF frequency. Drake R$ and ICOM 746 receivers - 75A4 broken this time.Data sampled 1/second. Data discarded on basis of delta phase of audio beat note from sample to sample. Remaining data averaged. Most data is thrown out - typical remaining is less than 10 samples.This is second time to try this. Expect poorer results on K5CM due to antenna orientation but we shall see. Great fun fooling with this for previous weeks. -73 john|
Soapbox: Thanks to K5CM, W8KSE, W6OQI, & W6ZTY for another fine event. 40 M was not good into Kansas so no data for W8KSE & W6OQI on 40. Not a lot of QRM here this time.
|Method: My method uses a GPS referenced HP-3586B and samples the 15625 Hz I.F., post filtering. The I.F. sample feeds both a calibrated computer running Spectrum Lab for time averaging the I.F. frequency as well as feeding the horizontal input of a scope. The scope's vertical input is fed from a GPS referenced HP -3336A generator, which is adjusted to produce a 1:1 stationary Lissajous pattern. The results speak for them self - Sometimes I'm close. For more information, please See:http://www.k5cm.com/k6OQK%20FMT%20NEW.htm|
Soapbox: Connie's 80 & 40-Meter signals were good, but his 160-Meter signal was just above the noise floor. Marv's 40-Meter signal was stable, but his 80-Meter signal had some Doppler type spread even though Marv is less than 8 miles from me. Mike, WA6ZTY's 40-Meter signal was strong but had a great deal of spread. Thanks to all who made this another fun adventure into the FMT world.
|Method: Elecraft K3 with Ovenaire 10 MHz OCXO. Just used SPOTting function and averaged results. As such I don't expect much better than 5 Hz accuracy.|
Soapbox: This was an attempt to discover how far off the OCXO was. About half way through the FMT, I discovered that there was a 4-5 Hz difference between CW and CW-R. This would indicate that the OCXO is about 2 Hz low. Next time I'll use WSPR/FMT 2.11.
|Method: Calibrated the CW pitch frequency on my IC-7800 using an HP3325A synthesizer/function generator referenced to a GPSDO. Set them "main" receiver to a national standard (either CHU or WWV, closest to FMT frequency) and "sub" receiver to frequency under test. Set receiver bandwidth to 150 Hz., the narrow BW allowed QRM free operation. Captured audio using Audacity and Spectrum Labs. Post test used reference station to get a sense of Doppler and applied to FMT frequency. Lots of algebra, statistics and curve fitting as well as a large dollop of guessing.|
Soapbox: If effort, rather than results, are rewarded I will score well. Doppler was huge on all transmissions except 160m. We shall see. Thanks to each of the transmitting stations for a well coordinated challenge.
|Method: ICOM IC-737 fed from Trap Dipole in Attic. Used FlDigi (to find the signal) and Spectrum Lab (to measure the frequency) together. Setup calibrated with WWV at 10M, 5M and 2.5M|
Soapbox: Reasonably good signals on 40M and 80M but nothing on 160M. Signals had lots of width and all one can do is take a "best guess".
|Method: Icom IC-756 Pro III|
|Method: GPS disciplined RF reference signal generator and Spectrum Lab|
Soapbox: Will do more preparation an planning for the next one.
|Method: Flex-5000C SDR transceiver with a HP Z3801A GPS-disciplined 10 MHZ oscillator serving as external frequency reference. All measurents were made visually on the transceiver's frequency spectrum display.|
Soapbox: I heard everyone reasonably well this year. A nice job by all. 73 from KB1MH
|Method: All homebrew equipment including a quadrature phasing direct conversion receiver, WWVB referenced frequency standard, frequency counter, and H-field loop antennas. Method involved phase locking the receiver's LO to the frequency of the unknown carrier minus a 1 kHz offset. The carrier's frequency is determined by measuring the frequency of the receiver's LO over a 10 second integration period while factoring in the 1 kHz offset, and taking an average, or sometimes selecting the "best" reading taken. Full details are available at: http://www.qsl.net/kd2bd/fmt-methodology.html|
Soapbox: Thanks to everyone for making these FMTs possible. Interference to K5CM's 80 and 160 meter signals, and W6OQI's low signal level made for difficult carrier phase locking, which led to low confidence in these readings. Good signal from W8KSE, though. 73.000 de John, KD2BD
|Method: yaesu 847, speclab, chu for reference|
Soapbox: k5cm was weak on 40 but very loud on 160. heard all station well enough, 40 was the worst band. 73 all
|Soapbox: Could not hear K5CM very well on 40 meters.|
|Method: Flex-1500 fed by OCF dipole and referenced to HP GPSDO. Flex set for 0 Hz IF and 600 Hz pitch CWU mode. VFO/DDS corrections ranged from -0.001 to -0.041 mHz. 600 Hz tone analyzed with Spectrum Lab calibrated for Flex-1500’s CODEC A/D sample rate. System accuracy verified against local AM HD broadcast station to be <0.1 mHz.|
Soapbox: Good signals received from all stations except Connie’s 160m that was only -112dBm. Each frequency I submitted had a distinctive spectrum peak, but of course they may not be the correct peaks. In error, I had SpecLab record the first 4 runs in compressed OGG format, so I can’t believe that’s a good thing.
|Method: K1JT FMT program, slightly modified.|
|Method: QS1R Locked to GPSDO then to spectrumlab. New setup.|
Soapbox: 40M vy vy weak into MO. Thanks for the test. Lots of fun again.
|Method: Equipment: Elecraft K3 with P3, AMD CPU PC, Spectrum Lab.
Method: 60 min equipment warm up. WWV at 5 MHz; 200 Hz CW filter. Zero beat calibration of LO. Mark 600 Hz on Spectrum Lab. Zero beat test signals and compare/zero with Spectrum Lab.|
Soapbox: All stations were received well except for K5CM on 40 meters. Noticed lots of error margin on 80m and 160. This is my 4th attempt. Some fading made the zero beat method a bit more difficult. I did things a little different on the low bands. Zero beating WWV at 5 MHz and using the 200 Hz CW filter with the DSP BW filter down to 50 Hz to keep things sharp. Same settings on all attempts for consistency. A lot less distraction at the home QTH this time. Fun and can't wait to try again in the spring. http://www.qrz.com/db/N0PFE/
|Method: Homebrew SDR transceiver (QEX 2011) with added software (Quisk). The transceiver uses a free running crystal oscillator calibrated against WWV at 5 and 10 megahertz. W8KSE on 40m and W6OQI on 80m were very weak, and K5CM on 160m was inaudible; but the software picked up something, so I included it.|
Soapbox: This was my first FMT. Many thanks to the organizers.
|Method: IC-7200, Spectran, WWV|
Soapbox: Could not copy W6OQI on 80M. Cndx not real gud hr. Many tnx to all the ops for another first class event - as usual.
|Method: TS570 with K1JT's FMT program using a locally written .bat file. Dipole (inverted VEE) antennas. Had to use Spec Lab and spreadsheet for the signal out of the range of FMT.|
Soapbox: Most signals fair to good except K5CM on 40M was very weak here. Some doppler on all signals. You know you are getting old when the most exciting thing you can find to do is FMT.
|Method: TS-480S with dipoles and Digipan v2.0|
|Method: TS 850S, Listened for zero beat. Read frequency from front panel.|
Soapbox: Some digital QRM on 80 but otherwise heard everyone.
|Method: For this FMT I am using my TS440S transceiver Calibrated with my HP
3325A locked to my GPSDO. and K1JT software on the computer.|
Soapbox: Connie was very weak on 40. The other stations got stronger as the FMT progressed with W6ZTY being the strongest. Signals improved dramatically on 80 and 160.
|Method: With an oven controlled osc controlling my K3 and a rubidium osc controlling my counter and in the CW mode I tuned the dial for close to 600 Hz on the counter then read the dial frequency on the K3. Knowing the error value from 600 Hz and the K3 error I corrected the readings.|
Soapbox: Enjoyed the exercise very much and am looking forward to the next one.
|Method: Icom IC-706MKIIg with a 43 foot vertical antenna, a very RF quiet neighbor hood with underground utilities, two fans, a two day warmup, local HD Radio stations, WWV and CHU, and SWAG's.|
Soapbox: All signals were strong except W6OQI on 40M. All signals had significant Doppler spread except K5CM on 160M. With only a 2 minute key down time, it is very hard to locate the unshifted carrier. I suggest using 5 wpm for the callup and handoff to reduce the frequency spread and give more time for analysis. Thanks to the ARRL, Ward Silver, N0AZ, K5CM, W8SKE, W6OQI and WA6ZTY for making all this possible. It's great sport.
|Method: Elecraft K3 #6534 w/K3EXREF upgrade but no 10-MHz external input. Antenna 80m horizontal loop up 20m. Interpolated corrections using adjacent WWVs for the 40m and 80m signals. Used WWV 2.5MHz and WRVA 1140 AM for the 160m transmission calibrations.|
Soapbox: Received good signal levels for all stations. Thanks for the test signals.
|Method: K3 input from antenna and Rubidum Referenced DDS. During test the DDS set to 100 Hz below Fx by a custom program. Spectrum Lab used to calculate delta between DDS signal and Fx. Reported fruquency is DDS frequency plus delta. K3 external reference off during test.|
Soapbox: Weak signals on 40 M. Better on 80 M. Very strong on 160M. Thanks for the challenge.
|Method: FT-847 + multiband vertical. Used WSPR software to calculate dial offset and measure the audio frequencies. First time I used this method.|
Soapbox: Signals were all Q5 here, mostly S9+. The signals all sounded like carrier was present key up and key down on all stations making copy of the cw nearly impossible. Good signals on the keydown portion allowing many readings to be taken. You need to do this a lot more often!
|Method: G5RV Jr, Narrow BPF, FLEX 1500, HP 8920B, SpectrumLab. GPS locked & monitored with Lady Heather. House Clock wanders parts in 10e12. Static measurements no problem, FMT's watch the wavy numbers and shoot.|
Soapbox: K5CM was a pure guess based on a noise hole. NF here was -90 to -110 dBm with power line noise. Other signals were manageable. Forgot to turn on pre amp in tuner so there was 6 dB loss in front of the 1500. Thanks to the master stations for the effort in putting this FMT on.
|Method: HF tranceiver (IC-706 MkII) and GB3RAL soundcard beacon reception program calibrated together against RWM (4996.0 kHz) and CHU (7850.0 kHz).|
Soapbox: Signals on 7 MHz were extremely weak and almost lost in static. I did not get full identification from W8KSE. However the long carrier (N0N) periods from K5CM and W8KSE showed up. Nothing heard from W6OGI and WA6ZTY. No effort was made on 3.5 and 1.8 MHz.
|Method: GPS-locked Rx, 500-Hz CW IF, record audio to HDD, analyze later with FFT. Expected negative Doppler during most of FMT so if toss-up between two peaks, leaned toward the higher one.|
Soapbox: All 8 transmissions audible here in FN15nt but 40M W8KSE (closest) was weak. Tnx for high quality test signals.
|Method: Ten MHz from GPS-disciplined oscillator to decade dividers producing 1 kHz frequency markers for the receiver. Using SpectrumLab on receiver audio (USB mode) to measure difference between unknown signal and nearest 1 kHz marker.|
Soapbox: Observed an impressive 10 Hz wide band of Doppler smear on the low freq side of WA6ZTY's signal. Nothing like it on W6OQI's signal or any of the others. Thanks to all the "emitters" for their efforts.
|Method: FT-920 with TCXO. Direct Frequency Measurement.|
Soapbox: 40M was very long with QRN, and K5CM & W8KSE were not able to be accurately frequency measured here in Cedar Rapids, IA.
|Method: TS-450S with TCXO and one Hertz frequency resolution/use digital dial reading and measure 600 Hz. offset CW(USB) tone using audio generator/frequency meter/Lissajous pattern. Calibration of dial used WWV 15 MHz.|
Soapbox: Thanks Connie and the key-down providers and the group responsible at ARRL. Another good FMT test. W8KSE was the weakest of the bunch on 40 meters.
|Method: TS-2000 + Thunderbolt GPSDO + Joe Taylor's software.|
Soapbox: Signals weaker than usual.
|Method: FLEX-1500 with external GPS 10 MHz reference using Spectrum Lab
software and 40 meter fullwave Loop antenna - Grid Square FM19kd|
Soapbox: First FMT in several years - now using MS-XL to calculate my results and attempting to negate Doppler effects.
|Method: Kenwood TS-2000; vertical; Signalink USB+; HRD for radio frequency control; Spectran software to measure audio tone. Within the hour before the FMT, established radio frequency correction factors with WWV at 2.5, 5.0 and 10.0 MHz while measuring WWV's 600 Hz tone with Spectran. For each copied FMT signal, tuned radio dial for 600 Hz tone display with Spectran and applied adjusted correction factors to radio dial frequency display.|
|Method: IC 7800 locked to Ribidium std into Spectrum Lab|
Soapbox: Doppler/multipath spread was all over the place for this FMT. Evan the 160 meter signal from K5CM was broad as a barn door!The W6OQI 80 meter signal was the weakest at my location but still very useable (once found!). Tnx to all who made the FMT possible.
|Method: Kenwood TS2000X
Spectrum Labratory software|
Soapbox: lots of multipath made measurements difficult
|Method: !com 756Pro and fldigi|
Soapbox: First thanks to all the transmitting stations for your time and effort. Conditions were really bad on 160 with slow QSB and Doppler. I measured on the peaks and at best is a SWAG. Always fun and I look forward to it each time. I sure would like to see a night sometime prior to the test with known frequencies for training purposes.
|Method: JRC 545 rcvr, 100 ft end fed long wire ant., Signal Link sound card, MixW s/w on Dell laptop|
Soapbox: Warm up for 4 hours and calibrated system on CHU 3330 and 7850 frequency standards before and during test. Measured mean system error of .3 Hz at 3330 Khz and 1.1 Hz at 7850. Applied linear interpolation of error at the received test frequencies.
|Method: GPSDO-stabilized Flex 5000 and WSPR|
Soapbox: First time I think I have copied all stations in a FMT with adequate signal srength all around. This is the first time I have used WSPR. Thanks for the test. Jerry W4UK
|Method: Flex 1500/dipole. Used SpecLab to compare unknown frequency with known reference (WWV - 5MHz).|
|Method: Delta Reference method using Flex 5000a and HP3336 disciplined by Tbolt GPS|
|Method: HP Z3801 GPSDO clocking HP 3586B Selective Level Meter and Spectrum Lab software|
Soapbox: Enjoyed the FMT all signals were good at my QTH in Southern California.
|Method: Humble antenna and ft-857d|
|Method: HP 3586B Selective Level Meter with GPS-stabilized external frequency standard.|
Soapbox: I had difficulty with both of W6OQI's transmissions. The frequency appeared to vary quite a bit. A propagation effect?
|Method: Spectran plots/records from Kenwood TS940s, IC-7000 on dummy load transmits nearby and is measured on rubidium disciplined HP5326A. Audio peak difference is added/subtracted from locally generated and measured rf.|
Soapbox: Thanks for providing an event that's more fun than chasing DX.
|Method: IC-718 with indoor wire antenna.
Calibrated before and after with WWV.
Frequencies read with FLDIGI on Windows 7 box.|
Soapbox: All good signals except K5CM on 160m. Not at all sure that what I measured was him. I hope I didn't make any idiotic arithmetic errors like I did on K5CM's test on Nov. 1, 2012!! Live and learn. Great fun, as usual.
|Method: Brooks Shera GPS controlled 10 MHz oscillator, HP3586B receiver with 1850 Hz audio into Spectrum Lab. Calibration with local standard, and propagation Doppler from estimated from 5 and 2.5 MHz WWV.|
Soapbox: I last entered the FMT in about 1963. I hope I have improved on my accuracy since then! Propagation seemed seemed good. I enjoyed this event. Bob
|Method: RFSpace NetSDR phase locked to Trimble TB, Clifton Labs active vertical, custom software in C# and MATLAB.|
Soapbox: Signal strengths were passable except for W8KSE's on 40M, which was down in the weeds. Tried out some new algorithms, so I could be way off. Many thanks to Connie and colleagues for another fun FMT!
|Method: FLEX-1500, Spectrum Labs|
|Method: IC-R75, HB Slave to R-75, HB DSS generator, Diarcy DS-1000, SpecLab, TEK 465 scope. DSS feeds Slave RX and scope to find first zero beat the follow up with SpecLab after moving DSS to 200 Hz offset.|
Soapbox: No measurable signals on 7 mc for K5CM or W8KSE, too close for first hop or ground wave. All signals measured were S-9 or better. I lost the SpecLab data in the computer so don't expect much this time. Thanks to all who made the test possible.
|Method: SDR in phase mode, averaged for 1 minute. Cal'd with WWV & CHU|
|Method: WJ-8718 Receiver locked to Rb standard, beat note measured with DL4YHF's Spectrum Lab software.|
Soapbox: Another fine FMT. All sigs were copyable by ear here in RI. W8KSE-40 was weakest, WA6ZTY was strongest, That new antenna is working FB Mike. Was so happy to hear WA6ZTY pounding in that I forgot to record my reference freq on his run. Thanks to all those involved in producing a great FMT.
|Method: 3586, 3336, spec lab, gps, 475 scope, dart board. Fx 3575 always has a bunch of digital qsos at my NJ qth. 3565-3570 is always quiet.|
Soapbox: Fx 3575 always has a bunch of digital qsos at my NJ qth. 3565-3570 is always quiet.
|Method: Heathkit IG-5218 audio oscillator, Chinese frequency counter, and some other E-bay derelects.|
Soapbox: Band conditions were a challenge, signal levels ranged from -74dBm for W6OQI on 40m to -115dBm for WA6ZTY on 40m. 5 of the 8 test signals were below -100dBm at this station. The most important piece of equipment was the 160m inverted "L". I enjoyed participating, and learned more valuable lessons. Thank you to all the hams, for your hard work, making this exercise possible. 73 Ed
|Method: FE5680A rubidium standard, HP-E4438 synthesizer, 75A-4, 772 Hz bandpass filter, synthesized audio generator at 772 Hz, polar phase detector, X-Y scope display, clock, pencil, and paper.|
Soapbox: QTH near San Francisco. 160m was weak, all the rest strong. Very little fading this time. Nice linear phase trajectories on most signals.
|Method: Hetrodyned by ear using HP3325 synthesizer and HP107 quartz standard|
Soapbox: I moved my FMT transmitting station to my alternate QTH in the Sierra foothills at 4100'. This meant moving the equipment, installing an antenna, and running 220 to the new shack. Murphy joined in, my HP107 power supply blew, I fixed it then the inner oven temperature sensor failed. That was a difficult problem and I almost had to bow out but I was able to fix it in time. The antenna went up the morning of the FMT and fortunately didn't need trimming. I hope that this new setup works at least as well as the prior one, signal reports will confirm.
|Method: The signals were received with an Elecraft K2 transceiver, with a Heathkit IM2420 frequency counter connected to the speaker output to measure the audio beat note. The frequency counter was previously calibrated using a Motorola R2021 service monitor to verify its 10MHZ time base was within 10Hz of frequency. This counter's time base was then used to check the K2 accuracy, on the 30m band, which is reading 40 Hz high. (With 1000 Hz beat note, the rig was displaying 10 mHz + 1.04 kHz.) When measuring above signals, the rig was tuned for 1000 Hz beat note in lower sideband mode, and 1.04 kHz was subtracted from rig display reading. The frequencies with bottom edge frequency of band entered were not receivable at my QTH|
|Method: Icom R-75 with Argo frequency counter than subtract known receiver error|
|Method: Flex 1500 radio|
Soapbox: First attempt and I was involved with a weekly net so I couldn't do them all.