November 15, 2007
Actual Frequencies (Hz):
W1AW 160-40, WA6ZTY 40 (<=1 Hz):
AA8K, K5CM, KA7OEI, KB7NIE, N3UC, VE2IQ, VE2ZAZ, W2HV, W3JW, W6OQI, WA1ABI, WA1RAJ, WB4KLJ, WB9FIP
W1AW 160 (<=1 Hz):
AA6LK, AA8K, AA9DH, AF9A, K1GGI, K2SM, K5BTK, K5CM, K6OQK, K8QH, K8TK, K8TV, KA7OEI, KB7NIE, KB8MOU, KB8MTZ, KC2LFI, KD2BD, KD5TFD, KF4JG, KR8L, N0NB, N1UC, N3UC, N5NA, N5PWG, N8UR, N9CYL, VE2AZX, VE2IQ, VE2ZAZ, VE3OAT, W0BR, W0CNN, W0HBK, W1BX, W1BYH, W1PW, W2FD, W2HV, W3JW, W4JLE, W4NMH, W4UK, W6OQI, W8DL, W8IVF, W8RKO, W9TJ, WA1ABI, WA1RAJ, WA1ZMS/4, WA2DVU, WA2IKL, WA3BDV, WA3ZWC, WA8YNV, WA9LT, WB0LXZ, WB4KLJ, WB9FIP, WD4GYN
W1AW 160 (>1 to <=5 Hz):
AB4XK, AJ9ON, K3SOM, K4GK, KA1ERL, KG4QWC, KK8O, N1NAZ, N2CUA, N4OPI, N8OB, W1OHM, W5AJ, W5DZ, W6NEK, WA4FJC, WF0P, WS3S
W1AW 160 (>5 to <=10 Hz):
KC8UR, NJ7P, VA3RMW, W5CPT, WN9GOC
W1AW 160 (>10 Hz):
AA0CL, AB2WB, K2TV, K3QC, K4KJQ, K8YSZ, K9ZQJ, KA9BBV, KB9O, N0ATH, N0DEU, N0YOX, N2TDT, N5DM, VE7BQO, W1KQ, W3MDM, W4KP, W7MSL, W8TJK, W9GOC, WA2USJ, WA4TII, WA8ZFD, WB4HUX, WB5EXI, WB8YHD, WM5Z, WZ3T
W1AW 80 (<=1 Hz):
AA8K, AA9DH, AB9CA, AE9K, AF9A, K1GGI, K2SM, K3SOM, K4KJQ, K5BTK, K5CM, K6APW/7, K6OQK, K8QH, K8TK, K8TV, KA7OEI, KA9BBV, KB7NIE, KB8MOU, KB8MTZ, KB9JJA, KC0TKS, KC2LFI, KD2BD, KF4JG, KG4QWC, KN4JN, N0NB, N2CUA, N2TDT, N3UC, N5NA, N7EP, N7KC, N8OB, N8UR, VE2AZX, VE2IQ, VE2ZAZ, VE3OAT, W0CNN, W1KQ, W1PW, W2HV, W3JW, W4AD, W4TVI, W4UK, W5JUV, W5UFZ, W6IHG, W6OQI, W7MSL, W8DL, W8RKO, W9TJ, WA1ABI, WA1RAJ, WA2DVU, WA2IKL, WA8YNV, WB0LXZ, WB4KLJ, WB6BIH, WB6VRN, WB9FIP
W1AW 80 (>1 to <=5 Hz):
AA6LK, AB4XK, AI4ID, AJ9ON, K4GK, K6GZ, K7NUU, KA1ERL, KK8O, KR8L, N5LBZ, N5PWG, N9CYL, NA0L, NJ7P, W0HBK, W1BX, W2FD, W4KP, W6NEK, W8IVF, W9GOC, WA3BDV, WA3ZWC, WA7IRW, WA7MXZ, WF0P, WM5Z, WN9GOC
W1AW 80 (>5 to <=10 Hz):
KC8UR, KI8L, NA2X, W5CPT, W5DZ
W1AW 80 (>10 Hz):
AA0CL, AA5VU, AB2WB, K0FNI, K2TV, K3QC, K8YSZ, K9ZQJ, KB1PIU, KB3LTT, KB9O, KD5TFD, KF4MH, N0ATH, N0DEU, N0YOX, N2DM, N2PTP, N4OPI, N5DM, VA3RMW, VE3DIJ, VE7BQO, W0BR, W0XP, W1BYH, W1OHM, W2IMY, W3MDM, W4NMH, W5AJ, W8AC, W8TJK, WA2USJ, WA4FJC, WA8ZFD, WB2AWQ, WB4HUX, WB5EXI, WB8YHD, WD4GYN, WS3S, WZ3T
W1AW 40 (<=1 Hz):
AA8K, AB9CA, K1GGI, K2SM, K5CM, K6OQK, K6YAZ, K9JM, KA7OEI, KA9BBV, KB7NIE, KC2LFI, KD5TFD, KG0HY, N2CUA, N3UC, N5LBZ, N7EP, N7KC, N8OB, NA0L, NJ7P, VE2AZX, VE2IQ, VE2ZAZ, W0BR, W0HBK, W1BX, W1BYH, W2HV, W3JW, W4JLE, W4TVI, W5JUV, W6NEK, W6OQI, W8RKO, WA1ABI, WA1RAJ, WA2DVU, WA2IKL, WA8YNV, WB4KLJ, WB6BIH, WB9FIP
W1AW 40 (>1 to <=5 Hz):
AA6LK, AA9DH, K3SOM, K4GK, K4KJQ, K5BTK, K6APW/7, K6GZ, K7NUU, K8QH, KA1ERL, KB8MOU, KC0TKS, KC7DX, KF4JG, KG4QWC, KK8O, KN4JN, KR8L, N0NB, N5NA, N5PWG, N8UR, N9CYL, VE3OAT, VE7BQO, W0CNN, W1KQ, W2FD, W4UK, W5DZ, W5UFZ, W8DL, W9GOC, W9TJ, WA3BDV, WA3ZWC, WA5PFJ, WA6ZTY, WA7IRW, WA9LT, WB6VRN, WD4GYN, WF0P, WN9GOC
W1AW 40 (>5 to <=10 Hz):
AB4XK, AJ9ON, KC8UR, N2TDT, N5JOA, NA2X, W4KP, W4NMH, W5CPT, W7MSL, WA6NTA
W1AW 40 (>10 Hz):
AA5VU, K0FNI, K2TV, K3QC, K8YSZ, K9ZQJ, KB1PIU, KB9O, KD6HXQ, KF4MH, KI8L, KQ7X, N0ATH, N0DEU, N0YOX, N2PTP, N4OPI, N5DM, VA3RMW, VE3DIJ, W0XP, W1OHM, W1PW, W2IMY, W5AJ, W8TJK, WA2USJ, WA4FJC, WA4TII, WA7MXZ, WA7ZZB, WA8ZFD, WB4HUX, WB4MNK, WB5EXI, WM5Z, WS3S
WA6ZTY 40 (<=1 Hz):
AA8K, K4KJQ, K5CM, K6GZ, K9JM, KA7OEI, KB7NIE, KB8MOU, KC7DX, N0NB, N3UC, N5PWG, N9CYL, NA0L, VE2IQ, VE2ZAZ, VE3OAT, W0BR, W0CNN, W2HV, W3JW, W4TVI, W5UFZ, W6OQI, W9TJ, WA1ABI, WA1RAJ, WA3BDV, WA7IRW, WB4KLJ, WB9FIP
WA6ZTY 40 (>1 to <=5 Hz):
N1UC, NJ7P, W0HBK, W4JLE, WB0LXZ
WA6ZTY 40 (>5 to <=10 Hz):
WA6ZTY 40 (>10 Hz):
AA0CL, K0FNI, K3QC, KQ7X, N0DEU, N2PTP, N5DM, VE7BQO, W2IMY, W5AJ, W7DEB, WA7ZZB
Result Details (n=163):
|Method: Equipment: (1) Yaesu FT-767GX transceiver, (2) Timewave DSP-59+ audio filter, (3) Korg DTM-12 digital tuner.
Method: (1) Connect audio out from transceiver through filter to the tuner input, (2) calibrate at WWV (2.5, 5.0, 10.0), (3) try to make 4 readings on each sideband, spaced 100 Hz apart, (4) crunch numbers & use averaged results.|
Soapbox: I used a musical tuner to indicate the note and sharpness / flatness corresponding to each test. I then calculated the corresponding frequency. Calibration at WWV and all the number-crunching aftermath takes a LOT longer than the measurements. With this method, it's important to calibrate at multiple points and then use linear approximation to extrapolate the error for each measured frequency. This is my first attempt at anything like this, so we'll see. Oh, 40 meters was a real dog - could barely hear it.
|Method: No commercial - just used a TS-570S, sound care and PSK31 software|
|Method: Using an HP Z3801A to discipline a HP 5345A counter and Marconi 2018 generator; generator signal heterodynes with measured signal in a Yaesu FT-847 in AM mode to produce audio; audio is measured by the counter; data collected by hand, averaged, and measured frequency computed.|
Soapbox: The online data entry is a nice touch - I'll appreciate seeing the results much sooner. Thanks, L.
|Method: I used only a standard Flex-Radio Systems SDR-1000 and Spectrum Lab audio software. The SDR-1000 does not have any special oscillator, just the stock one. I calibrated my SDR-1000 against WWV, then I set my receive frequency about 500 to 1000 Hz below the expected FMT frequency. I used Spectrum Lab to read the audio tone frequency and add that to the dial frequency on the SDR-1000.|
Soapbox: The razor-sharp, adjustable filters on the SDR-1000 make it easy to pick out the desired signal. All were good, except W1AW on 40 meters. It only poked above the noise occasionally. This is fun stuff. I gotta get a good frequency standard!
|Method: Yaesu FT-747GX
Korg AT-12 chromatic tuner (converted to frequency)
It measured the bfo frequency, using WWV and CHU as standards. With this info, I did a simple calculation to interpolate to the test frequency.|
Soapbox: FMT is always fun for me. It's interesting to try various methods to make the measurement needed and, sometimes, I get pretty close, without having to use fancy stuff! Next time, I'll do better.
|Method: IC-706MKIIG transceiver calibrated as per Ward Silver,N0AX (QST November 2006) and Korg Chromatic Tuner (CA-30) as described by Bob Schetgen, KU7G (QST May 2004)|
Soapbox: Had difficulty with considerable noise and interference (someone was transmitting an unmodulated carrier on about same 80 meter frequency on and off during test and was stronger at my location than the W1AW signal); I could not pick up anything on the 40 meter frequency (possibly my marginal antenna); great exercise, learned a lot, and hope to do better next year.
|Method: Calibrated with WWV after Rig had been on for 3 hours.
Readout on ICOM 756 is cycles, so I adjusted for phasing of my sidetone with the carrier and listened for them to "Lock" on, and counted how many times it drifted in and out of phase and compared up one cycle and down one cycle and interpolated (Guessed) at the fraction of a cycle. It was fun!! Thanks|
Soapbox: I enjoyed it! Lots of fun! I got a certificate last year and I am proud of it!
|Method: Beat Rx signal against HP8921 generator using K2 as mixer. Zero beat by ear. 8921 checked against WWV prior to test (looks like 8921 error was -0.3 ppm, results are corrected for this error). Measured no closer than 1 Hz, if that.|
|Method: Equipment: FT-847, microHam USB Digikeyer (using the outboard sound interface), HRD 3.5, DM 780 1.1, Spectran v2 (high resolution audio spectrum analyzer). Method: Determined the rig VFO calibration offset using Spectran to measure the difference between WWV tones and the rig VFO to a fraction of a Hz. Then I used linear interpolation using the 2.5 and 5.0 MHz WWV measurements to find the 80m FMT signal's offset. As a sanity check, I compared this result to DM-780's reported frequency of the FMT signal trace it's AFC attempted to align with it. The two agreed to less than one Hz.|
|Method: Homebrew version of the SDR1000 receiver. PTS160 timebase.|
Soapbox: Good sigs on 160M and 80M. 40M signal was about equal with the noise. Thanks!
|Method: Receiver: Drake TR7, no external VFO
HP 5335A frequency counter connected to Drake speaker out
HP 8924C CDMA test set as signal generator
Method: With frequency counter hooked to Drake's audio output, I measured audio frequency of beat tone between Drake's tuned frequency and FMT signal. When test ended, I disconnected the Drake from the antenna, connected it to signal generator, and measured again.|
Soapbox: This was obviously far from the best of techniques, and a much better technique could have been used with this equipment, and a little more time to research the proper ways to make these measurements. But it was what I could cobble together in a very short time after a very frantic work week while watching our four kids while my wife is out of town. And even if it were not very precise, my method of measurement exposed the drifting that was going on in the Drake and test equipment - neat to see just how much that radio drifts. (I will need to look into this more to make sure it is indeed drift and not some other measurement artifact.) I used the camera to take photos of multiple frequency samples since I had no other recording mechanism and I knew I'd see a lot of drift between the Drake and the test equipment. The values were entered into Excel and averaged. A few hours after the test, I measured the signal generator against WWV and I think it is less than 1/2 hertz off. The counter received a 10 MHz clock from the signal generator. I had fun, and I hope I did the math right! Thanks for putting this on!
|Method: Yaesu FT857D|
|Method: Indirect audio comparison...used an audio sprectrum analyzer to Visually matched the frequencies. Zeroed signal generator with spectrum analyzer display and then measured the signal generators frequency with frequency meter. Xcvr-ts950s, SG-85/urm-25G signal generator, Hamalyzer Vers. 2.6 FFT-Audio spectrum analyzer software, 1-300 MHZ MFJ 886 frequecy counter.|
Soapbox: I am hard of hearing, so used the visual method to actually see the zero-beat...would have had all bands but the old computer was too noisy at the lower frequencies. Maybe, Santa will bring me a newer faster computer. Thanks for the fun. Dan
|Method: IC-756 Pro
HP3586B selective level meter|
Soapbox: Fun activity. 40 meters very weak near Buffalo NY. Keep the FMT alive.
|Method: Icom IC-756ProII Zero beat upper and lower sidebands using WWV as a reference calibration.|
Soapbox: Almost missed the test because I had to go out to the County EMO to get a new RACES ID card and picture the evening of the test.
|Method: Icom 706 MK II G, with cw filter except while copying WA6ZTY. Inverted V strung east to west with apex at 25 feet.|
Soapbox: WA6ZTY was heavily covered by QRN 589. W1AW 579 on 160M, 599 plus 30 DB on 80M, 589 with QRN on 40M. I actually copied all W1AW without an antenna on all 3 bands. Thanks for sponsoring this fun event. 73 Tad K3QC
|Method: Flex Radio SDR 1000|
Soapbox: 1st Time Participant - Interested in the actual frequencies used.
|Method: ICOM IC-775DSP calibrated with WWV, on 5 and 10 mHz, both before and after the test.|
Soapbox: Thank you for providing the FMT.
|Method: Drake R-8B
Beating frequency Standard with incoming signal and extracting data with ARGO.|
Soapbox: Test conducted by club members: Bill Luyster N4AMG Bill Fuqua WA4LAV and photos taken by Bill DeVore N4DIT. Had over S-9 120Hz noise from mercury arc city street lamps. Came on an hour or so before the test. Signals weak on all bands but ARGO seemed to dig them out of the noise. No signals were strong enough to move the S-meter. I now have a greater appreciation for propagation Doppler shift. Needless to say that stations near the transmitters that get ground wave have an advantage over those far enough away that they have to rely on sky wave propagation. 73 Bill WA4LAV
|Method: FT-1000MP xcvr with standard oscillator (no TCXO). Receiver tuned 1.000 khz below expected frequency in USB mode. Audio "beat-note" decoded by Digipan and PC soundcard. Compared with 10.000 mhz WWV periodically during the test. WWV became very weak during the test so that my standard was "noisy".|
|Method: HP-Z3801, SpectrunLab, HP-3586 and tracking generator, FT-1000d and HP-3336b reference marker, FT-920 and PTS-250 reference marker.|
|Method: Argonaut V, audio hybrid combiner, audio signal generator.
Calculate timebase error from WWV, calculate measurement offset.|
Soapbox: Signals fair on 80M and reasonably good on 40M. Portable in Oregon with temporary (and low) 40M dipole. No timely internet access for schedule, looked for WA6ZTY later but not earlier than W1AW.
|Method: Kenwood TS940 Timewave DSP 59+|
|Method: I use a HP-3586B SLM as my receiver and a HP-3336B Precision Oscillator, both GPS referenced. I also use SpectrumLab, which is calibrated to my laptop computer. Because of errors in the tone output from the HP-3586B I sample and measure the 15,625 Hz I.F. I use a scope and Lissajou display with the HP-3336B for one input and the HP-3586B's I.F as the other input. This removes the need to calibrate around the 3586B's tone errors. I simultaneously use SpectrumLab to measure the resultant 3586B I.F. A complete description of my setup and methodology can be seen at: http://www.k5cm.com/k6OQK%20FMT%20NEW.htm - Burt, K6OQK|
Soapbox: There was a considerable amount of Doppler on the signals at my location but the signals were S5 or above on all bands.
|Method: GPS referenced HP 3586 receiver (20 Hz bandwidth), HP 3336 signal source as marker, Spectrum Lab on computer to measure offset between marker and off-air signal. Dipole.|
Soapbox: Unable to hear WA6ZTY (same as last year), W1AW only good signal was on 40 meters.
|Method: FT-817 with Ham Radio Deluxe/PSK Deluxe software|
|Method: Orion II (auxiliary receiver used), 80/40 dipole, Sabine MT9000 guitar tuner. I set the CW pitch to 440 hz (middle A) for the receiver. For calibration, I measured my receiver error on 2.5, 5 and 10 MHz using WWV. During the tests I zero beat the W1AW carrier using the spot function in the receiver and compared it with the Sabine for accuracy. I was able to resolve to 1 Hz and estimated rounding up or down based upon the WWV error.|
Soapbox: Great way to learn more about my radio and it’s abilities. I look forward to increasing my accuracy next time.
|Method: I used a HP Selective Voltmeter Model 3586B. Checked it against WWV at 2.5,5, and 10 MHz to make sure it tracked. Ant was a 80/40 trap dipole at 40 feet. Signal strength was around -50 to -60 DBm on 160 and 80. 73 Ken K8TV|
Soapbox: Worked out fine for me - except the propagation on 40 to Ohio was very, very weak, signal buried in noise about -90 DBm Seems like I could not enter freq. in any normal format!! into your form. Harder than the FMT itself.
|Method: Kenwood TS-140S, G5RV. Zero beated signal.|
Soapbox: This is a wonderful test. I just wish I could get closer to the actual frequency. There must be a way with not much equipement. I'll keep trying till I get it right. Good job.
|Method: zero beat with secondary standard|
Soapbox: Measured 80m but couldn't read my own writing!
|Method: Ten Tec Pagasus and making frequency corrections as indicated by listening to WWV and CHU.|
Soapbox: No special equipment, just for fun with a lot of guess work
|Method: Yaesu FT1000D spot freq. digital readout on rig|
|Method: An indirect method was used: An HP-3801 GPS was used to lock a Schlumberger 4031 which was set to a known frequency near the W1AW/WA6ZTY frequency. The resulting audio was recorded and later, a differential frequency analysis was done using Spectran.|
Soapbox: WA6ZTY's signal was extremely weak at this location: Because of a weak signal and some on-frequency QRM, it wasn't copiable at the time of the FMT, but it was visible in the post-analysis. W1AW-160 was weaker than last year, but both 80 and 40 were easily copiable.
|Method: Drake TR7/DR7 //Dial read-out at zero beat|
|Method: Heathkit HW-5400, Heathkit IM-2410 frequency counter|
|Method: Icom 735 used as the receiver. Antenna was an Inverted V bent to fit the alloted space with an MFJ 949E tuner. PC with AMD K6-2 400 MHz processor running Win 2000, ESS sound card and homebrew computer/radio interface. I used the Argo program by I2PHD and IK2CZL to help zero beat with WWV at 10 MHz. I switched to CW mode and recorded the audio tone carrier offset as 777Hz. The IC735 should have offset of 800Hz. During the test I used the Argo program set the offset as close to 777Hz as possible. The IC735 tuning would not allow me to get closer than 8Hz. I then used Ward Silver's method of making a fine tuning scale to estimate the frequency. This was done eight times and the mean calculated to reduce the measurement error.|
Soapbox: This is my second frequency measurement test. I have learned a lot from participating in the test and devising new methods to try and increase the accuracy. A huge plus for me is I have learned the limitations of my main rig (Icom 735). If I can just find a way to calibrate the RIT scale on the rig before the next test I think I can get even closer.
|Method: Yaesu FT817-ND that was left on 2 days prior to test, Sony camcorder to capture both the audio and visually capture the time (from a cheap WWVB clock) and freq dial, PC using Spectrum Laboratory V2.5 b11|
Soapbox: Fun as always. I found that I heard the 160 m signal by ear better than the camcorder recorded it. I was worried for a little bit that I wasn't going to be able to pull it out of the noise. Henry
|Method: Flexradio SDR1000 clocked by Wenzel oscillator phase locked to HP GPS frequency standard. Captured sound via Spectrum Lab software and analysed offline to average the peak frequency.|
|Method: HP 3586B Selective Level Meter. Set to low distortion mode. 400 Hz filter, set to counter mode.
Receiving on a long wire antenna (150 feet long) 40 feet high.|
Soapbox: My WWV calibration check was off slightly as I was getting WWV (2.5 MHz at 2499.9995) WWV 5.0 MHz at 4999.9990 and WWV (10 MHz at 9999.9981 Mhz) so take this into account for the above W1AW readings.
|Method: Kenwood TS-2000, Home Brew Sound Card Interface. Tuned 1 Khz down with rig in USB, used DigiPan to read the audio freq of the signal. Added the audio frequency to the rig frequency. Calculated rig error using CHU on 40 and 80 meters Then added the rig error to get my numbers.|
Soapbox: I could not copy the W1AW 160 transmission, I had lots of noise on 40 meters, and could not copy the 40 meter from W1A1 either. Note to self: Better antennas for next years test. 73 de KB9JJA/Dale
|Method: Drake R8 and Kenwood TS-130V Used cw mode and narrow filter; estimated center frequency|
|Method: Kenwood TS-450S
Argo software calibrated against WWV.|
Soapbox: My first try. Hope I am in the ballpark!!
|Method: Flexradio SDR1000 with original DDS oscillator. Plotted WWV and CHU pre and post test for calibration. Used baudline on a linux laptop to process audio for frequency of cw tone.|
Soapbox: Couldn't receive west coast signal. SDR is very temperature dependent. Only received a long first key down and a one minute second keydown on the 40 meter signal. I have also recorded wav files for post hoc analysis when I see how far off from actual freq. I am. 73
|Method: IC-7000 + fldigi|
|Method: Receiver used: Ten Tec Jupiter
(Tuned to 1 HZ and 150 Hz CW Filter)
Antenna use : Alpha Delta Communications Dipole Model DX-LB Up 40 Feet
I used the "SPOT" button on the TEN TEC Transceiver and with headphones on, Tuned the frequency while holding the spot button in on the Ten Tec Jupiter. The CW Tone was set for 500 HZ. I simply used my ear to match the tones!
Here is how I calibrated my receiver against WWV:
I tuned the 10 MHZ WWV signal on the Ten Tec Jupiter in the USB Mode and a second receiver an ICOM R-75 to the same WWV signal, but in AM mode.
The tone on the Icom R-75 had to be accurate, since the AM mode uses no local oscillator, but the same tone heard in USB on the Jupiter changed pitch as I tuned the VFO. I adjusted the volume and put the speakers next to each other noticed that I could beat the two tones together very dramatically. With this method, the human ear and the human brain is the discriminating test instrument.|
Soapbox: This is my very first FMT! It was fun and a real challenge for me as I am hearing impaired and wear two hearing aids.It was fun regardless of how far off I was! I chose a low frequency sidetone because i hear the lower frequencies as opppossed to the higher pitch frequencies! I chose 500 Hz! Tony KC8UR Mount Vernon, Ohio
|Method: All homebrew equipment consisting of a WWVB-Disciplined Frequency Standard, a quadrature phasing direct conversion receiver, and frequency counter (with time gate referenced to WWVB) that measured the receiver's local oscillator.
The receiver was tuned to produce a 1 kHz audio tone. The receiver's audio output was combined with a 1 kHz output from the frequency standard in a phase comparator with the resulting error voltage used to phase lock the receiver's L.O. to exactly 1 kHz below W1AW.
The frequency counter read the receiver's L.O. (operating at 8x W1AW on 160 meters, and 4x W1AW on 80 meters), which were logged by computer and averaged to produce my final results.
An air-core indoor receiving loop antenna was used for reception on 160, and an outdoor half-wave dipole was used on 80.|
Soapbox: Thanks for another opportunity to give my homebrew FMT gear a workout. Signals on 160 were considerably more stable than on 80 where significant Doppler effects were evident throughout the test period.
|Method: Kenwood TS 2000 records to wave file @ 48 khz - Spectrum Lab to find peak tone Calibrate setup to WWV and CHU to find correction values for radio|
|Method: Kenwood R2000 receiver with BC221 frequency meter and MJ-888 frequency counter. Count frequency of 100hz beats on both sides of unknown frequency.|
Soapbox: Unable to receive WA6ZTY. Weak signal from W1AW.
|Method: Icom IC-718 with TCO/high stability crystal unit, 500 Hz HF filter, 180/110/80 Hz audio filter. Comparison of CW and CW reverse tones to find zero beat. (Hard to do with old, beat-up ears!)|
Soapbox: Excellent W1AW signals on 160 and 80 meters, good signal on 40 meters with QSB. Antenna is G5RV up 20-25 feet, with LDG Z-11 Pro tuner.
|Method: WinRadio G313i HF receiver.
100 feet long dipole, up 20 feet.
I.F. filter was set to 500Hz.
S-meter (calibrated) -103db to -97db.
Re-calibrated WinRadio to WWV to CHU.|
Soapbox: Did not hear WA6ZTY, but W1AW was good on 40M. NO QRM this year. Signals were good at 0248UTC, but dropped into noise latter. My noise floor, as metered on the G313i, was -105db. Thank you, 73 Casey KG0HY
|Method: IC706MKIIG + CR282 upgrade
100-ft random length wire
Spectrogram Version 15.1
WWV and CHU calibration|
Soapbox: 40-m tentative as signal was weak but probably ID correct since it went off air at 03:05 with the rest of the bands. CHU or WWV seemed to have some disparate frequencies when compared to each other compared to other recent measurements for K5CM's most recent FMT.
|Method: FT-1000 mark v field. 80 meter loop.|
|Method: Ts-2000 and Homebrew 2.2 MHz computer using Hamradio Dlux and MiXW in the PSK-31 mode masuring a 500 Hz note calibrated with WWV.|
Soapbox: 160,and 80 were very good signals here in Ohio, but I could just hear W1AW on 40. Could not hear WA6ZTY at all. I worked real hard adjusting the master Oscilator on the TS-2000 to get the tuning error doun as close as I could. Took me 2 days about 3 hours each to get a stable reading against WWV.
|Method: Icom IC-7000. Interpolation of center frequency by using high and low signal fading frequency.CW mode, 500 Hz filter.|
|Method: Equipment is a TS-2000, a laptop computer running FLdigi on Ubuntu version 7.10, and a Creative Labs 24-bit USB sound card. First I used FLdigi in the "WWV" mode to establish a calibration curve for the TS-2k. I measured the display error at 5, 10, 15, and 20 MHz using WWV, then extrapolated the curve back to zero MHz. I found that at a theoretical frequency of 0.0 MHz the display would read 2 Hz high, increasing by 1.6 Hz per MHz. Thus, for example, the readout is 2 + (1.6 * 20) = 34 Hz high at 20 MHz. Using this information I measured the W1AW FMT signal on 160, 80, and 40m using FLdigi. I added the FLdigi audio frequency measurement to the TS-2k's dial readout, then subtracted the CW sidetone offset and also the frequency-dependent offset from my measured calibration curve. This gave me the measured frequency to the nearest one Hz. Calibration was rechecked after the FMT using WWV on 5 and 10 MHz.|
|Method: Yaesu FT-1000 Mark V - Spectran - dipoles and bazookas
Did as good as I had knowledge to do - wish I could have done better!
Very good signals on all 3 bands|
Soapbox: Thanks for running the FMT - I enjoy trying my gear I could not receive Ca. station
|Method: Yeasu 857D|
Soapbox: Could not hear WA6ZTY very well
|Method: Yaesu FT-920 with W1HKJ's Fldigi on Debian Linux. Measured '920 LO frequency error against WWV on 2.5, 5. and 10 MHz prior to event and calculated error at each published FMT frequency. Measured at least three runs for each frequency and averaged them then subtracted the calculated frequency error.|
Soapbox: After missing a couple of years of FMT, I decided to try it this year using W1HKJ's excellent Fldigi program which features a frequency analysis mode. By measuring the LO error against WWV and calculating the LO error at each FMT frequency, this year's FMT was a breeze. Well, it seemed like a breeze as I guess I'll find out how close I was!
|Method: Yeasu FT-920|
Soapbox: Thank You
|Method: Kenwood ts-2000, H/p 5383a, external freq std. 10x3-7 accuracy
Direct Freq Measurement|
Soapbox: Did not copy any signal on 80 or 40 meters.
|Method: IC-7800 with computer Spectrum Analyzer|
|Method: Icom IC-736, WWV @ 5.000 Mhz, and MultiPSK|
Soapbox: Was quite interesting .. My first time at trying this .. Learned a few more things .. Would be nice to have a mid year practice session with frequencies given on the air after each transmission or perhaps transmitted in the next RTTY and CW bulletins for the next couple days.
|Method: zero beat method, used Icom IC-746 as receiver, and BC-221-C, s/n 296 as frequency meter.|
Soapbox: First FMT I have participated in. W1AW signal very good this evening. Cut through the digital mode stations nearby on frequency. 160 Freq. was about 75% strength of 80 meter frequency. Dale, N2DM
|Method: FT-897d (using spot function)|
|Method: Icom IC-706 on a 40 mtr horizontal dipole and a Ten-Tec w/rcvr pre-amplf on a 15 mtr L-antenna.|
Soapbox: 160m was very hard to copy clearly, there was someone on voice very close to the frequency. 40m came in the best with 80m falling in between. I always enjoy the November tests. I hope next year to get a few non-hams from my shop to join in. I do wish the transmissions lasted a little bit longer or were staggered so I could have a good try at all the freq's.
|Method: Z3801 GPS 10 MHz to HP8657B and SDR-1000 using Janus/Ozy Sound Interface locked to 10 MHz Reference Spectrum Lab for measurement|
|Method: Yaesu FT857, G5RVjr.|
|Method: Zero Beat Method.
TS-480S w/HS Oscillator corrected to WWV.|
Soapbox: QRN not a problem this year.
|Method: Yaesu FT1000D and Spectran Software (Spectral Analysis Software) running on Dell Optiplex GX260 computer. Direct measurement of tone (1686.32 Hz.) with VFO set at 7047 kHz LSB. Antenna is G5RV Dipole at 35 feet.|
Soapbox: Test signal heard (5-8 to 5-9) on 40 meters around 0256 to 0302 on 15 November 2007 UTC.
|Method: Harris RF-350K transciever and specturm lab software|
|Method: Yaesu FT-920, calibrated against WWV 10 MHz.Spectrum Lab software to aid tuning the transceiver.|
Soapbox: W1AW was extremely weak on 160 meters; did not know for sure when the 160 m, test was finished, so got in late on the 80 m. test, just in time for the SK.Thanks for the chance to improve and have fun.73.
|Method: Icom IC-706, PC with calibrated sound card, MixW software, 42 foot vertical antenna. Calibrated during the test using the Canadian standards on 3330 and 7335 KHz.|
Soapbox: No Signal heard on 160 M or from WA6TZY. I measured doppler shift of 0.7 hz on 80 M and 1.2 hz on 40 M during the test. I averaged the readings.
|Method: Interpolation oscillator + dynamic signal analyzer|
|Method: Kenwood TS-2000 calibrated to WWV on 15 Mhz. Digipan software.|
Soapbox: Good signal on 160, great signal on 80 and very noisy on 40M.
|Method: HP 3586C selective level meter, HP 5065A Rb standard, Delta 44 sound card with Baudline on Linux|
Soapbox: Decent signals on 160 and 80, but 40M is always tough here in Dayton. I ended up with a smear about 3.5 Hertz wide, and no discernable peak. so I won't be surprised if my 40M reading is not very close.
|Method: IC746PRO with high stability osc.
Spectran version 2 software (by I2PHD and IK2CZL).
Homebrew (from TAPR) 10 MHz GPS disciplined frequency standard.
Soapbox: All bands were perfectly readable this year. Thanks for your efforts, I look forward to the FMT every year. 73
|Method: Using a Yaesu FT-847 with 1Hz tuning steps and 1Hz readout, and a 700Hz CW offset, I set the VFO to CHU Canada's carrier at 7.335MHz while in CW mode. The rig's internal 500Hz CW filter effectively removed the sidebands, which were weak anyway. I then measured the audio output of the carrier with a Fluke 179 handheld DMM. To measure ARRL's signals, I set the VFO to obtain the same audio output frequency as for CHU (bracketing between 1Hz steps, and interpolating). The accuracy of the DMM is about +/-0.8Hz (with precision 0.1Hz), while the accuracy of the VFO is unknown. If we assume that the accuracy of the VFO is the same at 7.335MHz, 7.045MHz, and 3.583MHz, what is then important is repeatability. Throughout the evening, I returned to CHU and found that it was always within +/-0.1Hz. My expectation is to measure ARRL's signals to within a few tenths of a Hertz. We'll see!|
|Method: Icom 756Pro, 80 meter inverted vee, 40 meter inverted vee
Alternate USB/LSB tone matching as described in Oct 2002 QST article|
Soapbox: Thanks for running this test, had fun.
|Method: Yaesu FT-847 with MMTTY software to find the shifted 1 KHz "mark".|
Soapbox: Barely heard the 160 signal. There was heavy heilscriber interference on 80 meters. W1AW was loud and clear on 40. WA6ZTY had heavy fades on 40 meters.
|Method: I used an Icom 756PROII and an AC voltmeter connected to audio output|
Soapbox: Signals were very good on 160M and 80M but 40 M the signal was barely readable.
|Method: Direct conversion RX with Marconi 2019A signal gen as LO. Locked to GPS. Beat frequency measured using Spectrum Lab. See: http://www.geocities.com/ve2_azx/FMT/fmt_info.htm|
|Method: TS-850, dipole antenna, homebrew freq std, software.|
Soapbox: If ARRL rounds their measured transmit freqs to 1 digit after the decimal point, it would only be fair to round all submitted readings to the same precision before calculating the amount of error, otherwise an artificial error is generated by ARRL's rounding off the "correct" frequency.
|Method: HP 3586B Selective Level Meter with 40M Sloper.
VE2ZAZ's GPS-Derived Frequency Standard (QEX, Sept/Oct 2006)
Labview control. Average of 200-300 frequency samples.|
Soapbox: Good West Coast signal in FN25. Great 160M signal. Good 80M signal. W1AW 40M signal difficult to receive due to QSB. Thank you!
|Method: Icom IC-746PRO and G5RV|
|Method: Using SpectrumLab software to compare the unknown signal with the nearest 1 kHz harmonic from my calibrator. Calibrator signal is derived from an old Sulzer freq standard that I try to keep close to UTC by comparing it with WWVB 60 kHz using an equally old Fluke 207 VLF phase comparison receiver. Ancient equipment with modern software HI.|
Soapbox: An interesting FMT this time. Lots of QSB, some QRM, and some pretty wild Doppler shifting and spreading at times. Not sure that my results are very consistent. The ionosphere is a Lady - always gentle but sometimes very difficult. Thanks for the test!
|Method: I used my FT 817 and tuned it so that the signal produced the same pitch when the mode was switched between CW and CWR. Also, I recorded the indicated frequency in the USB mode and then retuned the receiver so as to get the same pitch in LSB mode. I added these frequencies and then divided by 2. Using these results I got 7.04530 for W1AW. I estimate my precision as + or - 10 Hz. Please note: I did not measure the 160 m or 80 m W1AW frequencies but had to enter some numbers in order to submit the form.|
Soapbox: I found this test very interesting and, as a result, I have been thinking a great deal about the indicated frequency on my FT 817 and its relationship to the BFO and mode. I tried measuring the WA6ZTY frequency but by the time I had figured out what I should be doing the test was over so I am not very confident about this result. Thank you to all those who went to the trouble of providing this very worthwhile exercise.
|Method: FT-1000MP TO RECEIVE OFF-AIR SIGNAL TS-870 ACTING AS LOCAL OSCILLATOR HP3561A FFT SPECTRUM ANALYZER TO COMPARE TONES HP53131A COUNTER TO MEASURE FREQUENCY OF LOCAL OSCILLATOR Z3801 GPSDO FREQUENCY STANDARD ANTENNAS: W1AW: 420 Ft NE Beverage WA6ZTY: 300 Ft W Beverage|
|Method: Everything used for my first FMT was home-made, other than the tranceiver!
Home-built GPS Disciplined Oscillator using Brooks Shera design but my own designed Atmel AVR firmware with custom PID controller. The reference from this oscillator feeds my home-built DDS Oscillator/SignalGen/QSD receiver based on Analog AD9954 DDS. Used DDS to produce accurate reference signal, and fed its signal to 2nd HF Antenna. Used TS-480HX with TCXO in USB mode to tune and receive both FMT signal and Reference signal (Put Reference about 5-9 Hz higher than FMT signal). TS-480HX is connected direct to PC via M-Audio Delta 44 soundcard. Captured signals with SpectrumLab software, and calculated difference between Reference signal and FMT signal, added this difference to set frequency of DDS.|
Soapbox: I preferred the format of the West Coast test on 40M- it utilized longer ID sequences (about 1 minute) between the three carriers, giving me better time to prepare/adjust my equipment for the 'middle' of the three carriers. Regarding the main 3-band test, switching between each of the three bands was also very challenging- I really had to scramble to prepare for each of the three tests! A bit more ID time between each of the three bands would have been nice. Either way, I got through it, and felt it a great sense of accomplishment to capture and accurately measure the three different bands. Thanks for sponsering this measurement test- it was great fun to figure out the best way to use my home-built equipment in such an exercise. Maybe next year it would be nice to measure and publish the results of your signals to .01 Hz- There are many folks who would prefer the higher resolution! -Reid Bishop- W0CNN
|Method: FT-920 Transceiver, HP-400H Oscillator, Tektronix 453 Scope, Trionyx TR-1000 Frequency Counter. Dipole Antennas. Direct Frequency Measurement Method.|
Soapbox: Great signal strengths in IA for measuring this year! Very little QRM or QSB. Thank you for conducting the test, and I am pleased that I have to wait only 14 days for the results!
|Method: Kenwood TS-570D Receiver, HP-8640B Sig. Gen., Tenma Universal Test Center 72-5085 (Freq. Counter). Zero Beat W1AW Test Signal on receiver. Zero Beat receiver with signal generator and measured signal generator frequency.|
|Method: Stanford Research DS345 digital frequency generator used for local reference against WWV @ 10 MHz. Advantest TR5823 counter calibrated from above, then used to measure the local oscillator error of FT2000d, before and after the FMT.|
Soapbox: W1AW has a wonderful ground wave into Vermont in the morning, but during the FMT hours it's like trying to measure from a moonbounce. WWV has its moments too...especially when you need them. Still lots of fun. 73 Craig
|Method: IS 756 PRO 3 RECEIVER, IC746 PRO TRANSMITTER INTO DUMMY LOAD,FREQUENCY COUNTER|
Soapbox: GOOD SIGNALS ON ALL BANDS, BUT SOME DELIBERATE QRM, ESPECIALLY ON 40 METERS. (NOT SURE I GOT THE RIGHT CARRIER !)
|Method: FT-1000D/MixW in LSB Spectrum Mode|
Soapbox: Never did this before. The topic and ARRL article were brought up at work so I thought I'd give it a shot from home.
|Method: Kenwood TS-450, warmed up for an hour prior to the test. Adjusted the VFO (fine setting) to receive the same pitch tone on both CW and CW reverse. Then read out the frequency.|
Soapbox: Nice idea, fun test. If I worked at it, I could probably interpolate a guess at the last Hz by looking for the slightest pitch change at the closest 10Hz readout. Something to try next year.
|Method: Icom 756 Pro-II; WWV calibration routine/Excel spreadsheet inputs. I measure by counting (by ear) the 'nulls' between the test signal and my rig's sidetone over the time period. This gives me the data to report at 'better than' 1 hz resolution.|
Soapbox: In the Phoenix, AZ area, WA6ZTY was never heard. The propagation must have been my enemy. I heard lots of East Coast stations, but nothing from the West Coast FMT station. On 160 meters, my measurements are probably as much 'imagination' as fact. I never found the W1AW call-up on 160 meters, but then heard an incredibly weak (RST 1-1-9) 'dead carrier' amidst the noise, shortly thereafter, which seemed to be 'in time' with the W1AW signals on other bands, so measured it. I'll keep my fingers crossed on this one.
|Method: Kenwood TS 450S / WWV Cal 10 MHz.|
|Method: Yaesu FT990 with digipan audio frequency readout/measurement. Old 100MHz computer with an equally old sound card. Calibrated using CHU @ 3.33 & 7.335 MHz & WWV @ 2.5, 5.0 & 10 MHz.|
Soapbox: Was the last minute of the W1AW 40M test left out? Thanks for a wonderful opportunity to check out my gear. 73, Henry
|Method: Kenwood 950SDX|
Soapbox: My first try
|Method: Receiver dependent method used
IC-7800 Locked to Z-3801A GPSDO
Data collected using Spectrum Laboratory software|
Soapbox: All sigs gud this year. The W1AW 40 M sig was weakest at this location and it had the most severe "doppler spread" effects of all the sigs measured.
Soapbox: W3MDM firstname.lastname@example.org
|Method: TS940 receiver, Efratom rubidium 10MHz standard, Z3801 GPS 10 MHz standard,FM/AM 500A Service monitor, Ramsey PS-2 audio multiplier and a HP5342 Frequency counter.|
Soapbox: Enjoyed setting up for the test. Qrm on 80 meters was bad but the W1AW signal helped quite a bit. I like the electronic submission and the reduction to the 2 week wait for the results. I'll definitely be back for the next one. Jack W4AD
|Method: IC 746Pro signal sent via sound card to MIXW and measured with the AMTOR cursor.|
Soapbox: So much noise on 40, not sure I copied the right signal. 160 weak but did get a trace on the screen. Way tougher than previous years because of propagation. No copy at all on 80 Meters.
Dipoles for 160 and 80m, used 160 wire for 40m
Ran zero beat test with WWV at 5.0Mhz
My reading was 5.000012 and calculated the correction factor from that, then tried to use that correction factor for the specific frequencies. Seemed a little cumbersome to someone who has never tried before, but I enjoyed trying something new.|
Soapbox: First time to try the FMT. I enjoyed learning something new. Used the FT920. I enjoyed this enough to try again on the next one. W4KP
|Method: Kenwood TS-2000 G5RV
Kenwood TS-480 Hx "HomeBrew" Wire ANT.
Utilized Side-Tone Calibration Precedures in owner's manuals.|
Soapbox: First time participating in FMT. http://www.Norfolk-ARES.org
|Method: Frequency measurements are referenced to a GPS based frequency standard (Brooks Shera, QST July 1998). The 10MHz outpur of the frequency standard drives an HP3586C. The synthesized tracking generator outpur of the HP3586C feeds the input of an AM receiver tuned to the frequency being measured via an 10dB directional coupler and variable attenuator. The receiving antenna is connected to the AM receiver through the low loss path of the directional coupler. The HP3586C frequency is adjusted for a convenient beat note frequency (400~600Hz) and the attenuator is adjusted for maximum beat note amplitude. The beat note frequency is measured using DL4YHF's Specrtum Lab software. The measured frequency is then calculated using the beat note and HP3586C frequencies|
Soapbox: W1AW signals on 40M and 80M were good (S5~6) this year. The WA6ZTY signal was excellent (S7). I like the test format and reporting method used this year. I greatly enjoyed the 2007 FMT and hope you continue to hold it each year.
|Method: IC-756PRO3 + "Spectrum Lab" software + WWV references + pencil + paper ;-)|
Soapbox: Need more of these - maybe every quarter.
|Method: ft1000MP/MKV - direct using visual tuning indicator|
Soapbox: Nice of W1AW to move up above the warbller on 80. difficult copy here on 160 but tried. Midland, TX ARC is doing local version FMT for dinner at the club's year-end dinner party.
|Method: Icom IC-756 & soundcard input to CWGet (to measure freq of sidetone)|
Soapbox: The Multi Tone QRM on 80M made it hard but not impossible to hear the signal.
|Method: Kenwood TS2000 HP 53131A counter|
|Method: Icom 756PRO. I used the K5CM procedure for the 756PRO. I used WWV at 10 MHz to calibrate my receiver. It was off less than 1 Hz when checked against WWV on 2.5, 5 and 10 MHz.|
Soapbox: I only measured 80m and 40m. When I submitted the two freqs, I got an error saying "No measured frequencies were entered." I had commas in the freqs, so I removed them for this try.
|Method: computer, sound card, spectrum lab, HP 3336-B, 10 MHz reference, and stable receiver. Attic antennas due to CC&Rs.|
Soapbox: Nothing heard on 160. Surprised to hear east coast on 80 and 40 but sigs were good 5-7-9. WA6ZTY 5-6-9 in Arizona on 40 meters.
|Method: IC756ProII(cw 150hz) dial calibrated against wwv & chu. Soundcard FFT spectrum analyzer to measure audio tone.|
|Method: Icom 756PROIII
PC 32 bit soundcard
Spectrogram V11.2 PC Software|
Soapbox: With 756PROIII in CW mode and 600 Hz sidetone offset, I tune the incoming signal sidetone to align in the center of the 600 Hz Marker displayed by the Spectrogram software. Then I read the freq directly off the 756PROIII freq display to 3 decimal places. Best I can do with the gear I own. 73, Frank - W6NEK
|Method: GPS locked receiving system for measuring the incoming signal as measured via an HP3586B selective level meter. The I.F. of the HP3586B is beat against the output of a HP 3336B signal generator which creates a lissajous pattern on an X-Y scope. Still needed is a way to cancel Doppler shift.|
Soapbox: WA6ZTY was VERY weak in Southern California making for a very difficult measurement. The West Coast would be better served on 80 meters. I know this from the experience of keeping RTTY skeds for over 50 years. I would like to volunteer to do an 80 meter West Coast ARRL FMT next year. I have the ability to transmit 500 Watts of GPS locked signal on 80 meters. I have been doing this for the FMT Nuts group under the leadership of Connie, K5CM. You can see a photo of my FMT setup on the K5CM web site: http://pages.suddenlink.net/k5cm/W6OQI%20%20FMT%20NEW.htm Marvin Collins, W6OQI
|Method: Yaesu FT-100D and headphones|
Soapbox: Signal was moderate strength here north of Seattle, probably just the propagation at the time. Some QRM also. I heard W1AW on 80 and 40 but not strong or clear enough to measure.
|Method: TS-430S & inv Vee antenna - compare beat note on LSB side with beat note on USB side and get as close a tone as possible - average dial readings corrected for known inaccuracy - adjust for perceived difference in beat note up or down.|
Soapbox: Found out that the radio steps frequency not necessarily together with the dial stepping in frequency! Could add another 10Hz to my error.
|Method: Ft-1000MP + Spectran|
|Method: Direct Digital Readout|
Soapbox: LOTS of QRM on 80 meters. QSB and QRN on 40 Meters
|Method: TenTec Orion, Frequency counter and interpolation.|
|Method: HP 3586C Frequency Selective Level Meter using built in tracking generator, Attenuator, and PC running Spectrum Lab FFT software. Method was to measure the difference between the carrier generated by the tracking generator BFO and the ARRL carrier. This difference is at audio and measured using the FFT software. The difference is added or subtracted from the displayed frequency on the HP3586C to come up with the ARRL carrier frequency. A second receiver (FT-100D) was used to monitor the ARRL 160 meter frequency through out the test so I could hear what band was being measured. Antenna: 40 meter dipole on the HP3586C and a 30 meter dipole on the FT100D.|
Soapbox: I copied the west coast test and recorded the data. They had a weak but usable signal at my QTH. Unfortunately, stupid me, I failed to write down the base frequency that the HP3586C was tuned. I have the difference frequency but I don't have the base frequency to determine the final answer. Maybe I will be less stupid next year!
|Method: ICOM IC-703, BC-221, Fluke Frequency Counter 1953A|
|Method: TS-850S/AT, direct display readout, no computer-enhanced interpolation|
|Method: Standard: HP105B, HB WWVB rx, HB phase comparator 1 mc/ 60 khz, strip recorder.
RX: IC-R75, HB slave rx to R75, Tek 465 scope, HB sig generator using modified AMQRP DDS-60 controlled by Basic Stamp and desktop computer.|
Soapbox: WA6ZTY sigs poor but measurable, cw hard copy, some doppler. 160 meters, sigs fair, cw good copy, some doppler. 80 meters, sigs good, cw easy copy, plenty of doppler. 40 meters, sigs very poor, almost no cw copy, all sorts doppler and fade. I would appreciate another minute between band changes. Thanks TEJ
|Method: HF receiver locked to Rb standard. Beat note analyzed with DL4YHF's Spectrum Lab software.|
Soapbox: Glad to see ARRL keeping the FMT alive. 73, John WA1ABI
|Method: 2x HP3586C SLM, HP5061A Cesium standard, Truetime & HP GPS T&F receivers for oscillator performance verification|
Soapbox: QRM bad and signals weak on 40M during the West coast run. 160M and 80M signals from W1AW were great - with 40M weak, as expected.
|Method: W1AW = 1854.116420KHz
IC-736 HF rig in CW mode to hear W1AW on 160m.
Marconi 2022C signal generator being feed by HP-Z3801 GPS standard.
Couple sig gen into receiver until very near by W1AW signal.
Use Spectran on laptop PC to view audio passband of receiver.
Measure audio difference on Spectran disply between W1AW carrier and
signal generator carrier. With algebra, you now can find the carrier frequency of W1AW since the sig gen freq is known to better than 1E-10.|
Soapbox: Only measured W1AW frequency on 160m. Nice strong signal, but moderate QSB as well as changes in frequency due to shifting propagation. Noticed spreading of carrier on wavefall display as well as .08Hz shifts in freq when spreading was at maximum. Had to take optically weighted average of displayed frequency to deduce the W1AW carrier frequency. Will have to try 80m next year.
|Method: Using a 3586B HP Selective Level Meter calibrated with a HP FX Standard as a vfo to zero beat W1AW received on a 756 pro. Antenna is a K9AY Loop.|
Soapbox: No qrm this evening!!! Sigs 30/9 on 160&80, S9 on 40.
|Method: Heap of HP/Agilent goodies bought on eBay.|
Soapbox: Good signals this year.
|Method: Heath lab generator IG-42 Heath freq counter IB-1102 JST-145|
|Method: Equipment is an IC-7800 warmed up 4 hours, with a B&W folded dipole antenna. I switched between CW/CWR and listened for the pitch change. Afterward I rechecked the CW/CWR pitch change with WWV at 10mHz.|
Soapbox: The FMT should be every 6 months, one summer, one winter. Its a challenge and lots of fun. When the bands open up, maybe a few higher frequencies could be added.
|Method: IC-R75 receiver w CR-282 high stability crystal unit, wire antenna cal to WWV @ 5 MHz, as below, for ±600 Hz carrier beat = 600 Hz tone in AM mode tune below in USB mode, above in LSB mode, for equal audio tones average=carrier 160 (599) 1853700/1854534 80 (599) 3583000/3584623 40 (559) 7044750/7045871|
|Method: Receiver (OMNI VI) w/freq counter on Audio to indicate 600 Hz sidetone. Used sig gen into TT OMNI VI to repleciate arrl signal later to same sidetone and measured signal gen with counter. 80 and 40 M Dipole antenna.|
|Method: FT 1000MP SOUND CARD|
|Method: Ten-Tec Orion / zero beat|
|Method: Measured at about 6:51PM, PST. Used Icom 706 and CW/CWR comparison for same beat frequency by ear.|
Soapbox: Looking forward to seeing the results. That will tell me how far off the calibration of my 706 is!
|Method: IC737 w/Dipole antenna. HP107 Standard w/GPS comparison. HP5100B Synthesizer. Measured frequency by zero beating by ear against synthesizer.|
Soapbox: I finished making the West Coast transmission then decided to listen for W1AW. I was surprised to hear it so well and scrambled to set up a zero beat test. I expect to be within about 0.1 Hz but certainly no better than that. BTW, this online entry form has the West Coast callsign wrong, it is WA6ZTY, not WA6TZY. -Mike-
|Method: Yaesu FT-857 with DL4YHF's Spectrum Lab (Audio Signal Analyser). Computer sound card errors were corrected using WWV 500 & 600 Hz tones with RX in AM mode. RX tuning errors were measured with same tones while RX was in USB mode. (RX error about 1/2 ppm.) Corrected measurements with proportional error for each frequency.|
Soapbox: Good propagation to CA on 80m & 40m this year. Thought I had the 160m signal, although couldn't hear it. However, after the test ended, the signals were still there, so some other environmental junk.
|Method: Yaesu FT-897 and Heathkit Frequency counter on audio outout|
|Method: IC-706MKIIG w/TXCO, 40 meter vertical, HP Laptop running fldigi (w1hkj software) under puppylinux.|
Soapbox: Very poor copy on W1AW. Thanks to WA6ZTY for west coast signal.
|Method: ICOM IC-7000
By ear while switching CW normal to reverse|
Soapbox: good signals on 80, poor on 40, ok 0n 160
|Method: Zero beat carrier CW mode|
|Method: With a K2 in CW mode and 650 Hz sidetone offset, I tune the incoming signal sidetone to align in the center of the 650 Hz Marker displayed by the Spectrogram software. Then used a signal generator to visually match the signals in the spectrogram software and read the frequency on the signal generator.|
Soapbox: First time trying the ARRL FMT. Could not copy the 80 meter signal because of the QRM was too strong. Good signal on both the 160 and 40 meter test. Decided to conduct the test at the last minute and did not have adequate time to validate my test measurement methods. Hopefully I am within 10 HZ.
|Method: HP3586B Receiver, HP3335A Synthesizer,Spectrum lab and Homebrew Timebase using Vectron OCX0, Garmin GPS rcvr, occasional Manual adjustment.|
Soapbox: Keep up the tests. I learn something each time. This is the first time I exported a file from Spectrum Lab as my main measurements. I found my "real time" notes inadequate (Rcvr freq, Marker freq, USB/LSB), so I may have made some big errors.
|Method: BC-348Q WW2 receiver, LM-18 WW2 calibrated frequency indicator, direct read from interpolated scale|
Soapbox: First FMT I've done in about 25 years. Always a good exercise! Howie WBwAWQ
|Method: zero-beat Kenwood R-2000 receiver (inverted-L 160 meter antenna) with Kenwood TS-430s transceiver, using MFJ-260c dummy load, and Optoelectronics Cub frequency counter.|
Soapbox: This is an enjoyable technical challenge, and I would welcome repeat tests in the future!
|Method: FMT Equipment
Rcvr: Yaesu FT-450
Computer audio interface: Rigexpert SD
Software: Mixw ver.2.18
Calculated the error of my equipment by measuring WWV's frequencies on 2.5, 5 and 10 MHz. I then factored in that error with the frequencies measured during the FMT.|
Soapbox: Will miss getting the cool certificate I got last year.
Soapbox: Interesting Test
|Method: ICOM 706MKIIG; Hamscope Software using waterfall display; and WWV/WWVH signals.|
Soapbox: I calibrated the IC706MKIIG and Hamscope Software against WWV/WWVH prior to the FMT and determine the error curve versus frequency at 5, 10, & 15 MHz. I then used that error curve and the same system to determine the test frequencies.
|Method: Kenwood TS-870S
Soapbox: @ DM04xc : W1AW SINPO 160 m nil 80 m 22322 40 m 34444 WA6ZTY SINPO 40 m nil
|Method: Ten Tec Argonaut II and listening for zero beat compared to local sidetone/oscilator after comparison to WWV on 5 mhz|
Soapbox: I really did this just for fun and I'm sure I'm way off the mark. Just read the article today in QST and decided to try it about 20 mins before the test started. I wanted to use a freq counter on the audio out of the receiver to compare the zero beat, but, the lashup was at the last minute and didn't work so I used my ear.
|Method: Local OCXO derived reference along with unknown RX frequency into SSB receiver with resulting tones analyzed by computer.|
Soapbox: Glad for change to more timely web reporting and result feedback.
|Method: HP 3586B with HP Z3801A Time Base|
Soapbox: Unable to receive 80 meter signal clearly due to strong QRM & QRN
|Method: MixW Software Waterfall Frequency Display|
|Method: FT-1000 MKv Field
Linux Computer running gMFSK with Hamlib support set to read Hz resolution.|
Soapbox: 160 was by far the hardest to hear/see. Signal strength was at or below my noise level. Without the waterfall display I would never have been able to measure this signal. 40 meter band signal was the strongest signal at or around S9 (Calibrated at 100 uV). I could not even heat the Left Coast station. Maybe next year he could run multiple frequencies? Great program offered by ARRL staff. Should do this more often. Steve
|Method: FT-897, direct display readout|
|Method: IC756 Pro II, Carolina Windom 160 SP at 30 Foot.|
Soapbox: Almost missed it this year, arrived home only minutes before test, ran SOP, and tuning strictly by ear. TU 73 CUL de WS3S.
|Method: Icom-7000 & vertical ant.|
Soapbox: This was fun, we should do it more than once a year.