November 13, 2008
Actual Audio Frequencies (Hz):
|80m Tone 1||80m Tone 2||80m Dif||40m Tone 1||40m Tone 2||40m Dif|
W1AW/WA6ZTY All (<=1 Hz):
K5CM, W3JW, WB6ZQZ
W1AW 80 Tone 1 (<=1 Hz):
AB2UW, AB3HB, AC8Y, K1GGI, K2SM, K5CM, K5PA, K6APW/7, K6BZZ, K6HGF, K6PFA, K8QH, K9JM, K9KK, KA8LGI, KG4SGP, N0KC, N3AM, N4GU, N5JOA, N5LBZ, N7EP/7, VE2AZX, W2KI, W2ZK, W3DQT, W3JW, W4DFW, W4QO, W4TVI, W5GW, W5RVT, W6IHG, W6OQI, W9TJ, WA1ABI, WA2DVU, WB6ZQZ
W1AW 80 Tone 1 (>1 to <=5 Hz):
AA8K, K0MZ, K4CXX, K4MF, KB0OLA, KF4VXJ, KG0HY, N5DM, N8OQ, W1PW, W3BC, W5JDX, WB0UZW
W1AW 80 Tone 1 (>5 to <=10 Hz):
KD5MMM, N5SPE, N9XY
W1AW 80 Tone 1 (>10 Hz):
AB0OX, K2WU, K5AVY, K8TK, KA7OEI, KB5YZG, KD8EEA, N0NB, N2TDT, VE2IQ, W0HBK, W1BYH, W3MDM, W4CNG, W7KMV, WB0VGI, WB6SKS
W1AW 80 Tone 2 (<=1 Hz):
K5CM, K6APW/7, K6BZZ, K9KK, KG4SGP, N4GU, N5JOA, N5LBZ, W2KI, W3DQT, W3JW, W4QO, W6IHG, WA1ABI, WB6ZQZ
W1AW 80 Tone 2 (>1 to <=5 Hz):
AA8K, AB2UW, AB3HB, AC8Y, K0MZ, K1GGI, K2SM, K5PA, K6HGF, K6PFA, K8QH, K9JM, KA8LGI, KB0OLA, KF4VXJ, KG0HY, N0KC, N3AM, N5DM, N7EP/7, N8OQ, VE2AZX, W1PW, W2ZK, W3BC, W4DFW, W4TVI, W5GW, W5JDX, W5RVT, W6OQI, W9TJ, WA2DVU, WB0UZW
W1AW 80 Tone 2 (>5 to <=10 Hz):
K4CXX, K4MF, KD5MMM, N5SPE, N9XY
W1AW 80 Tone 2 (>10 Hz):
AB0OX, EA8NQ, K2WU, K5AVY, K8TK, KA7OEI, KB5YZG, KD8EEA, N0NB, N2TDT, VE2IQ, W0HBK, W1BYH, W3MDM, W4CNG, W7KMV, WB0VGI, WB6SKS
W1AW 80 Dif (<=1 Hz):
AA8K, AB0OX, AB3HB, AC8Y, K1GGI, K2SM, K2WU, K4MF, K5AVY, K5CM, K5PA, K6APW/7, K6BZZ, K6HGF, K6PFA, K8QH, K8TK, K9JM, K9KK, KA8LGI, KB0OLA, KF4VXJ, KG0HY, KG4SGP, N0KC, N0NB, N5DM, N5JOA, N5LBZ, N5SPE, N9XY, VE2AZX, VE2IQ, W0HBK, W1PW, W2KI, W2ZK, W3BC, W3DQT, W3JW, W4TVI, W5GW, W5JDX, W5RVT, W6IHG, W6OQI, W7KMV, W9TJ, WA1ABI, WA2DVU, WB0UZW, WB6ZQZ
W1AW 80 Dif (>1 to <=5 Hz):
AB2UW, K0MZ, K4CXX, KD5MMM, N3AM, N4GU, N7EP/7, W4CNG, W4DFW
W1AW 80 Dif (>5 to <=10 Hz):
W1AW 80 Dif (>10 Hz):
KA7OEI, KB5YZG, KD8EEA, N2TDT, W1BYH, W3MDM, W4QO, WB0VGI, WB6SKS
W1AW 40 Tone 1 (<=1 Hz):
K1GGI, K5CM, K6HGF, K9JM, K9KK, W2ZK, W3JW, W4DFW, WA5ZNU, WB6ZQZ
W1AW 40 Tone 1 (>1 to <=5 Hz):
AA8K, N5DM, N5JOA, N5LBZ, N9OK, W3DQT
W1AW 40 Tone 1 (>5 to <=10 Hz):
K4MF, W1PW, W2KI, W5JDX
W1AW 40 Tone 1 (>10 Hz):
AB9CA, EA8NQ, K5AVY, N5SPE, N9XY, VE2IQ, W7KMV, WB0UZW, WB0VGI
W1AW 40 Tone 2 (<=1 Hz):
AA8K, K5CM, K9KK, N5LBZ, W3JW, WB6ZQZ
W1AW 40 Tone 2 (>1 to <=5 Hz):
K1GGI, K6HGF, K9JM, N5DM, N5JOA, N9OK, W2ZK, W3DQT, W4DFW, WA5ZNU
W1AW 40 Tone 2 (>5 to <=10 Hz):
K4MF, W1PW, W2KI, W5JDX
W1AW 40 Tone 2 (>10 Hz):
AB9CA, EA8NQ, K5AVY, N5LUL, N5SPE, N9XY, VE2IQ, W7KMV, WB0UZW, WB0VGI
W1AW 40 Dif (<=1 Hz):
AA8K, AB9CA, EA8NQ, K5CM, K6HGF, K9JM, K9KK, N5JOA, N5LBZ, N5SPE, VE2IQ, W1PW, W2KI, W2ZK, W3DQT, W3JW, W5JDX, W7KMV, WB6ZQZ
W1AW 40 Dif (>1 to <=5 Hz):
K1GGI, K4MF, N5DM, N9OK, W4DFW, WA5ZNU
W1AW 40 Dif (>5 to <=10 Hz):
W1AW 40 Dif (>10 Hz):
K5AVY, WB0UZW, WB0VGI
WA6ZTY 80 Tone 1 (<=1 Hz):
K1GGI, K5CM, K5PA, K6HGF, K7TT, K9JM, N0NB, N7EP/7, W2ZK, W3JW, W5GW, W6OQI, WA1ABI, WA7ZZB, WB6ZQZ
WA6ZTY 80 Tone 1 (>1 to <=5 Hz):
K6APW/7, N5DM, W1PW, WA7MXZ
WA6ZTY 80 Tone 1 (>5 to <=10 Hz):
WA6ZTY 80 Tone 1 (>10 Hz):
AC6TK, K5AVY, K7ACS, K7EFL, K7JL, K9OSC, KA7OEI, KG6VSO, KI4MTI, KR6DD, N6TTO, N9CYL, W4TVI, W7KMV, WB0VGI, WB7EHX, WI7B
WA6ZTY 80 Tone 2 (<=1 Hz):
K1GGI, K5CM, K5PA, K6APW/7, K6HGF, K7TT, K9JM, N7EP/7, W2ZK, W3JW, W5GW, W6OQI, WA1ABI, WA7ZZB, WB6ZQZ
WA6ZTY 80 Tone 2 (>1 to <=5 Hz):
N0NB, N5DM, W1PW, WA7MXZ
WA6ZTY 80 Tone 2 (>5 to <=10 Hz):
WA6ZTY 80 Tone 2 (>10 Hz):
AC6TK, AI4BN, K5AVY, K7ACS, K7EFL, K7JL, K9OSC, KA7OEI, KG6VSO, KI4MTI, KR6DD, N6TTO, N9CYL, W4TVI, W7KMV, WB0VGI, WB7EHX, WI7B
WA6ZTY 80 Dif (<=1 Hz):
AC6TK, K1GGI, K5CM, K5PA, K6HGF, K7TT, K9JM, KR6DD, N5DM, N7EP/7, W1PW, W2ZK, W3JW, W4TVI, W5GW, W6OQI, W7KMV, WA1ABI, WA7ZZB, WB6ZQZ, WB7EHX
WA6ZTY 80 Dif (>1 to <=5 Hz):
K6APW/7, N0NB, WA7MXZ
WA6ZTY 80 Dif (>5 to <=10 Hz):
WA6ZTY 80 Dif (>10 Hz):
AI4BN, K5AVY, K7ACS, K7EFL, K7JL, K9OSC, KA7OEI, KI4MTI, N6CCH, N6TTO, N9CYL, WB0VGI, WI7B
WA6ZTY 40 Tone 1 (<=1 Hz):
K5CM, W3JW, W6OQI, WA5ZNU, WB6ZQZ
WA6ZTY 40 Tone 1 (>1 to <=5 Hz):
WA6ZTY 40 Tone 1 (>5 to <=10 Hz):
WA6ZTY 40 Tone 1 (>10 Hz):
K7ACS, K9KK, KA7OEI, N9CYL, WB0VGI, WI7B
WA6ZTY 40 Tone 2 (<=1 Hz):
K5CM, W3JW, WA5ZNU, WB6ZQZ
WA6ZTY 40 Tone 2 (>1 to <=5 Hz):
WA6ZTY 40 Tone 2 (>5 to <=10 Hz):
WA6ZTY 40 Tone 2 (>10 Hz):
K7ACS, K9KK, KA7OEI, N9CYL, W6OQI, WB0VGI, WI7B
WA6ZTY 40 Dif (<=1 Hz):
K5CM, W3JW, WA5ZNU, WB6ZQZ
WA6ZTY 40 Dif (>1 to <=5 Hz):
WA6ZTY 40 Dif (>5 to <=10 Hz):
WA6ZTY 40 Dif (>10 Hz):
K7ACS, K9KK, KA7OEI, N6CCH, N9CYL, W6OQI, WI7B
Result Details (n=94):
|Method: Stock Flex-Radio Systems SDR-1000 and Spectrum Lab software. Recorded the whole IF, then made an audio wave file with the BFO 500 Hz high. Measured the tones with Spectrum Lab and subtracted the difference from the carrier tone.|
Soapbox: 80 meters was an S-9 signal, 40 meters down in the noise.
|Method: Orion II with Buckmaster dipole using MMTTY and MS-Excel|
|Method: Icom IC-7000, Signalink USB interface to computer running Digipan. Three hour warmup, then tuned to CHU on 3331 & 3332, so CHU carrier acted like LSB tone. Used AFC feature on Digipan to get readout of tone frequency on Digipan & then adjusted "REF adjust" in IC-7000 to get 1 & 2 kHz tones as close as possible - noted discrepancies, (which were 0.2 Hz max). 10 sec of W1AW tone was enough to get AFC in Digipan to work - looked at phase scope in Digipan to see when AFC had "locked" on to W1AW tone. Averaged 4 or 5 tone readings & corrected for the slight discrepancies.|
Soapbox: The sound card in the Signalink is much better than the one in the laptop, less noise & seems very stable after warmup. The IC-7000 is good for this because its internal reference can be tweaked after warmup. Got out my HP 8640B to recheck my thinking after the numbers were rejected by the ARRL form-was happy to see it was an error in the form!
|Method: I used the GPS pulse-per-second "tick" and a disciplined oscillator to generate an accurate, local 10 MHz reference. That signal was used to lock a local signal generator (LSG) and a frequency counter. The LSG was then used to create a "phantom signal" (identical to what would be received during the test except entirely known) to determine the offset of the receiver LO (Kenwood TS-570). The counter readings during the test were averaged and corrected for the various offsets to yield the reported results.|
Soapbox: One problem inherent in using a zero beat with WWV to determine the receiver LO offset is the low frequency roll off of the audio stages. When the LO and WWV carrier are close one simply can't hear the beat and hence this introduces uncertainty. This was the motivation for the "phantom signal" above where the known offset could be set well within the audio pass band of the receiver. I saw no other way to get around this unless one could somehow calibrate the CW side tone of the receiver by another method. The only good signal I could receive was from W1AW on 80M; the 40M signal was too weak to be usable. Similarly, neither signal from WA6ZTY was usable at this location.
|Method: RX audio out of K2 to computer running Spectrogram. Sound card is cheap SoundBlaster 16. Did quick analysis on the air and recorded for better look. Did not get good copy on 80 so only looked at 40.|
|Method: TS-2000 and Sectrum Lab software. Set dial frequency to 3598.000 LSB to copy CW message and measured audio tones. Actual tones were measured directly on cursor. Then found dial correction from WWV 600 HZ timing tones in AM and LSB modes at the close of the test to reveal my actual dial freq =3597.9981452 KHz. The modulating tones could not be derived without knowing the dial frequency of the transmitter but the center of intellegence figures out to 3596.2599802 KHz. Unless I goofed it all up in haste. W1AW was heard but too much noise.|
Soapbox: Such are the things we run into figuring where the emission winds up. Probably not as precise as resolved since I don't know the accuracy of the software. Since no long term averaging possible, all we can do is grab the data and try to make sense of it after.
|Method: Watkins Johnson 8718A receiver; Hewlett Packard 5334A counter--counts frequency at receiver i-f; Unisource FC-8150U counter--counts receiver audio frequency; Hewlett Packard 3324A synthesizer--confirms measurement results/frequency relationships, etc; Hewlett Packard 58503A GPS referenced frequency standard--reference for everything else. W1AW 80 M tone #1 appears to have drifted to 3596782.54 (717.46) on transmission #3. W1AW was very weak on 40M, QRM obscured measurement. WA6ZTY was weak on 80M, no measurements. WA6ZTY was not heard on 40 M, in other events the 40 M signal was 599.|
|Method: ICOM IC-706MKIIG
BUX COM RASCAL Model Mark V GLX
Toshiba Satellite P105-S6024
Spectran V2 (Build 216) sampling rate 48000Hz
Measured computers sampling frequinces with "Sound card sample rate checker ver. 1.1 found that 48000Hz sample rate is the closest.
Measured 706 dial error to WWV 5Mhz found to be 3Hz low with spectran.
I did not here W1AW on 40 or 80.
I measured WA6ZTY with Spectran.
I measured the 80m Tone 2 at 719.33|
Soapbox: I would have lined a litle longer test by the time I found the signel the test was over leaving very little time to double check my settings.
|Method: Method: indirect using a FT-897D transceiver with the Digipan software. Antenna is a half-size G5RV|
Soapbox: W1AW's signals were good (579), but a local tuning up signal made me unable to copy the two 80 meter tones. 73 and see you on next FMT!
|Method: Indirect method, Drake TR-7 receiver, Heath VF-1 with Heath IM-4100 counter|
Soapbox: I tuned the W1AW signal in with a 30 year old Drake TR-7 receiver, used a 50 year old Heathkit VF-1 as a frequency source, coupled to a 20 year old Heathkit IM-4100 frequency counter, which I kept in tune to WWV with a 55 year old Hallicrafters SX-73 receiver. Keeping the 10 MHz crystal in the counter tuned up was the hardest part. The old VF-1 is surprisingly stable. I tuned the audio pitches by ear by tuning the VF-1 directly to the received signals and did the math. This is the first time I have done this since 1981 when the FMT was discontinued. I didn't know it was reinstated until a week ago. Thanks for bringing it back. Fun stuff!!
|Method: Heterodyne with known signal generator, record beat with calibrated sound card, analyze with SpectrumLab.|
Soapbox: Good sigs from W1AW on 80, weaker on 40. Had to dig to find WA6ZTY keying pattern in the spectrogram on 80, no copy on 40.
|Method: IC756 Pro
HP 3586B Selective Level Meter
80 Meter Dipole|
Soapbox: Low signal level on the 80 meter band made it difficult to get a good reading. The 40 meter signal was down in the noise and not usable at all. Include 160 meters next time.
|Method: Computer sound card with a 10 kHz reference tone from an ovenized oscillator. 60 second FFT. We were asked to measure the difference, so the measured Tone1 and Tone2 frequencies are irrelevant and totally dependent upon where I had my receiver tuned near 3597.5. Thus only the Tone Dif entry is valid.|
|Method: Lampkin Lab MFM-105B padded to 1.75 MHz+ and harmonics to FT-101B as receiver for heterodyne source and to HP 5327A Counter. Method: approximately equalize signal levels, obtain near zero beat in AM mode, and do fine tuning in SSB mode with product detector working with both signals for increased resolution for each tone frequency.|
Soapbox: 80 m. signal was stronger than 40 m. signal; a fumble in band change precluded measuring 40 m. signal while available. Hope omission of 160 m. signal was temporary. Thanks for the exercise, and looking forward to the next FMT challenge!
|Method: IC736 with Spectrum Lab v2.7|
Soapbox: First FMT since the 1970's
|Method: FT-857D with Sencore Model FC71 Freq Counter. 80m dipole at 37 ft. and 40m vertical Cushcraft R8, 50 ft. overall.|
Soapbox: 80m signal were good. Much noise, QRM and fade on 40m. This may be the third submittal because I used the Enter key instead of the tab. This set is the good data. Thanks for the FMT! Lee
|Method: HP-3336 and FT-1000D in AM Mode on 80 meters
PTS-250 and FT-2000 in AM Mode on 40 meters
Soapbox: W1AW signals were good on both 80 and 40 meters. WA6ZTY signals were weak on 80 meters and could not be heard by ear on 40 meters, however Spectrum Lab could still detect the 40 meter signal enough for a possible reading. Only two sets of tones were detected on 40 meters. Thanks to both stations for running this FMT 73 Connie K5CM
|Method: Spectrum Lab, Audacity, Excel software and ICOM IC-756PROIII Rx.
Calibrated receiver against CHU and WWV. Calculated error freq.
FFT analysis and calculated mean and standard deviation. Applied error offsets to determine tone frequencies.|
Soapbox: 40 meter signals were too faint or not heard.
|Method: Ten-Tec Argonaut V, audio hybrid combiner, digital audio generator. Detect beat by ear, calculate frequencies.|
|Soapbox: Could not hear W1AW on 40 or the west coast at all. Using Thunderbolt GPS clocking HP 3336, Spectrum Lab, FT-817. Thanks for the test.|
|Method: 3586B locked to Thunderbolt GPS tuned to published frequency and in demod mode. Audio fed to Digipan. Clicked on waterfall display to determine audio frequency.|
Soapbox: W1AW very weak on 40 meters. No copy on WA6ZTY on 40 meters.
|Method: TS-2000 in LSB receive mode tuned to 3.59750 MHz. Audio output to computer running Spectrum Lab audio spectrum analyzer. Calibrated prior to FMT using WWV audio tones.|
|Method: Radio: TS480SAT, inverted V 80/40 antenna Digital Master 780, sound card for tone freqs. Tone Freqs were 1362/722/540 80m, 1365/725/540 40m Doesn't accecpt tones below 1000hz|
|Method: Rx: Icom IC-736. Direct measurement w/ soundcard / Spectrum Lab audio S/A software.|
|Method: Set Kenwood TS450SAT to frequency of 3597.5 Mhz and 7095.0 Mhz and Zero beat to calibrated signal generator. Measured audio tones with a calibrated frequency counter.|
Soapbox: Signals were nonexistent from W1AW on 80 and 40 Meters. Signals from WA6ZTY were very very weak on 80 Mtrs and nonexistent on 40 Mtrs. The background noise level on 80 meters was S7 and only S4 on 40. I could barely hear WA6ZTY below my noise level on 80 Mtrs.
|Method: ICOM IC-737 fed by attic multiband dipole using fldigi 3.03 PC software in frequency analysis mode calibrated against WWV at 5Mhz, 10Mhz, 15Mhz and local AM 1000 radio station. Made calibration offset curve of offset value versus frequency and picked values for 80m and 40m. Used EXCEL to calculate offsets and data.|
Soapbox: Couldn't hear W1AW on either frequency and couldn't hear WA6ZTY on 40m. Fumbled around finding WA6ZTY at all and had frequency analysis program set for upper side band rather that lower ... had to correct that out. If I got anywhere close it will be amazing. It is truly harder that it appears and I can't wait for the next fmt as I'll be better prepared ( even though I thought I was ). Thanks for your efforts... Jim Hatley K7TT
|Method: Orion II's Aux receiver in the CW mode, dipole antenna & Digipan software. I measured the error of the my transceiver using WWV at 2.5mhz & 5.0mhz. I then estimated the error at 3.6mhz. I read the tone frequencies in Digipan and adjusted for the calculated error and BFO tone frequency.|
Soapbox: I always enjoy the FMT exercise. This test required some additional calculations because of using the CW mode with sidetone. I couldn't hear the 40m signal but 80m was strong from W1AW. No signals heard from the California station in Michigan.
|Method: Dipole FT-920 Spectrumlab / Direct|
|Method: Instructions are unclear. I did not measure the CW frequency and assumed the carrier was as published. Zero beat against a known secondary standard.|
Soapbox: Heard S America SSB covering 40 meter signals. ZTY started test before W1AW went QRT, need to get the timing worked out better. Instructions a bit confusing.
|Method: ICOM-756PRO3 and Spectrum Lab. Equipment well warmed up.
No special calibration was done. Lost piece of paper with notes on which bands were 1st and 2nd by W1AW and WA6ZTY. Hope I guessed right for this submission.|
Soapbox: There is certainly no time to text message with the rapid pace of this FMT. But it was fun preparing for it and fun analyzing the results. Waiting for the next one. Gud signals from W1AW both bands and from WA6ZTY on 40
|Method: Icom 756 Pro3 and Digipan|
|Method: - Two receivers: FT-817 (80m) and FT-100 (40m) with the outputs of each being recorded to a sound file.
- A reference signal was supplied using a Schlumberger 4031 locked to a GPS source: This reference signal was in the passband of the receiver and recorded along with the FMT signal.
After the FMT, a portion of WWV (and a locally-generated) reference signal was also recorded for time-sync of the recordings as well as to provide a cross-check of the accuracy of the reference and sample rates of the audio recordings.
For frequency measurements, another computer running Spectran was used to measure the audio frequencies: The short (10 second) test tones were also filtered and looped (with phase-coherency being carefully maintained) to obtain longer-duration integration for greater instantaneous frequency resolution.
The frequencies of the tones and the reference were measured and the offsets were taken into account, yielding the hypothetical audio frequencies.|
Soapbox: 1st revision: Absolutely nothing was heard from W1AW on either 80 or 40 meters: This was unusual, as I've always been able to easily hear W1AW on 80/75 (and 160, which, wasn't available this time) in the past. Several days after the FMT, I re-analyzed both the 80 and 40 meter W1AW segments and found what appeared to be likely candidates for signals in the published FMT format on the 80 meter recording. Because the signals were well below audibility and only barely detectable using extremely narrow bandwidth techniques, I can't be certain that I was able to identify which one was "Tone 1" and "Tone 2" - or that I actually identified W1AW-originated signals! The same deep analysis of the 40 meter recordings - even using assumptions based on the analysis of the 80 meter W1AW signal - did not yield any conclusive results. WA6ZTY's signals were only "fair" - much worse and more variable on 40 than on 80 - but that's not surprising, considering the distance between CA and UT. Even though the WA6ZTY's signals signal was quite audible, neither I or another local participant with whom I spoke heard the CW announcements. As it happens, we'd both set up with our receivers tuned at the noted carrier frequency in LSB mode, so I presume that the CW announcements were sent at "zero beat" - and I did not care to adjust tuning during the FMT! Since I didn't hear a thing from W1AW, I don't know if they followed the same convention: Next time, I'll have a 3rd receiver online to tune around - just in case!
|Method: IC 746 "In the Mobile"
Home Brew Audio Filter
XCEL Spread Sheet|
Soapbox: Heard W1AW on 80m very well. Could hardly hear WA6ZTY on 80m. Nothing to report on 40m. Took 101+ points of information and boiled it down to three.
|Method: Sound Card Spectrum Analyzer|
|Method: JRC NRD-545 DSP Receiver, w/ High Stability Crystal Oscillator CGD -197 TCXO, audio into Dell Lap Top w/soundcard running Digipan PSK-31 s/w.|
Soapbox: Two hr warm up. Calibrated receiver in CW (1.0KHz tone setting) mode against WWV 5MHz carrier. Digipan software read 999.4Hz for WWV carrier (0.6Hz low). Only able to monitor 80m tones, too much noise on 40m. Observed audio tone lines on Digipan waterfall display, and read the audio frequency in digital readout below waterfall. On 80m observed two tones : 282.2 Hz and 357.7 (the average of three transmissions each). The low tone 282.2 was strong; the 357.7Hz hi tone was very faint, not sure, but I could have been looking at harmonic. Any way, added the 0.6Hz correction to the observed, yeilded 282.8 and 358.3Hz. '73 DE KB5YZG
|Method: rig: Yaesu FT847, measured on Spectrum Lab|
Soapbox: My first try at FMT. It went by fast and I could be off by a mile! It was fun. 73
|Method: TS-2000, Optascope|
Soapbox: We had fun trying to measure the tones. We successfully measured the tones on WWV, but had difficulty with the W1AW test. We're looking forward to the next one so we can improve our ability. Thanks and 73
|Method: Sound card software|
Soapbox: 80 meters came into Raleigh RST 599, while 40 meters was just barely audible.
|Method: Receiver, 1997 Drake R8A, calibrated to WWV 2.5MHz. Windows 98 computer, using VisualAnalyser 8.0, soundcard software. Antenna, clothes line open loop, with 110 feet of wire, about 7 feet above the ground.|
Soapbox: This is a good time, for the FMT, with the on going minimal solar activity. DE KG0HY
|Method: I am using an IC-706MIIG, Spectrum Laboratory Software, and Audacity to measure the frequencies. I let the radio warm up for 5 hours prior to the test; the computer was on for just as long. I have calibrated my receiver to WWV's frequency. I took the offset on each frequency which WWV transmits on, and found the linear regression. Using that I determined on which frequency I should listen on to be sure I was on the correct listening frequency.
I used audacity to record the raw audio from the radio at a sampling rate of 96kHz and 16bit resolution. Using audacity I took the time it took for 50 cycles of each tone to pass by. Dividing this number by 50 I found the period of the tone. Taking the inverse finds the frequency. This agreed with the Spectrum Laboratory estimates.
When I calibrated my receiver minutes before the test, I noticed that correction factor had diminished by 2Hz, that is to say I was listening 2 Hz higher than the frequency I should have been.
Reviewing the audio I found that the W1AW's CW carrier was right on my listening frequency (within 0.129Hz) so I did not correct for the 2Hz after all.
I have made no modifications to the IC-706.|
Soapbox: With luck I hope I made the correct decision. I hope to be within 5Hz but with this being my first time I would be thrilled to be less than 10Hz. The 7MHz was just a bit too weak to copy, although I think they used the same audio tones. 73 KG4SGP - Jim
|Method: IC-8000 direct method and custom audio software. I also had a hardware failure during the test and hopefully captured something useful if not will try again. Had fun! that's what counts. :-)|
|Method: Recorded using Grundig Yachtboy 400 receiver (synthesized, 1kHz step, has BFO) and PC running Spectran 2.216, then integrated to form a clean peak repeatedly during playback using highest resolution allowed (0.031Hz).|
Soapbox: Big problem: I mistakenly tuned to 3986 -- should have gone to 3985 -- so now I can't tell if the first tone 103.23 (for me, being tuned below the anticipated tone carriers) was below or above my receiving frequency! So, the bottom line is: the first tone of each of the three pairs could just as well have been 1396.77, with a resulting difference of 312.88 Hz.
|Method: Kenwood TS570S modified to accept external 20 MHz reference frequency derived from Lucent GPS Slaved Master Oscillator. Output audio to HP 5345A counter. This old counter has no HPIB interface, so a digital camera was used to take screen shots of counter display. This data was reduced manually for frequency mean values.|
|Method: FT-920 with Fldigi in Frequency analysis mode.|
Soapbox: Despite the flu, I managed to get in on this November's FMT. This was bar far the most challenging for me yet. The short tone durations meant that I had to work quickly and I'm not confident that accurate measurements were made. It will be interesting to compare my results with the official W1AW frequencies. 40m was completely dead here with neither W1AW nor WA6ZTY heard here.
|Method: Tuning IC-706 receiver up and down for best signal.|
Soapbox: 40 mtrs was drowned out by some AM station in my location. Not sure if I did it right, my first time at measuring tones. On one pass I measured a tone at 2.33 kc. Also, the article states tones between 500 Hz and 2 kHz; but this software page states tones must be between 1 kc and 2.5 kc...which is it?
|Method: Not sure what you want for "Tone Dif," so I have subtracted 1 from 2. Measurements with Elecraft K3 using spot tone to zero beat as closely as possible, then read the frequency down to 1 Hz.|
|Method: SDR-14 receiver/FFT analysis|
Soapbox: First time trying the FMT. Interesting challenge. Look forward to seeing the results
Dipoles at 40'
Soapbox: WA6ZTY not heard on 40 Meters.
|Method: AOR AR 7030 Receiver, 260 ft open fed dipole, and direct measurement using Spectran software on home built computer with Windows 98 OS.|
Soapbox: 40 meter signal was 5-9 at 0251 UTC 80 meter signal was 5-9 at 0254 UTC
|Method: Harris RF-350K transceiver and Spectrum Lab computer software.|
Soapbox: Good signals here from W1AW on both 80 and 40 for a change. Now if I can only figure out how to accurately interpret the SL results.
|Method: Yaesu FT-920, hoping I have a correction factor figured right.
40M dipole and Spectran program.|
Soapbox: Just couldn't get the lower tone dialed in fast enough. Operator error
|Method: Received the signal on my Ten Tec Pegasus and ran the receiver's line-out directly into my MacBook Pro. The signals were analyzed with baudline software running under Ubuntu Linux.|
Soapbox: My friend, George W5JDX, and I worked together and communicated via 2 meters during the test. We also listened to WA6ZTY but the signals were not as strong at our QTH in MS. George runs an 80m full wave loop and I have a 135' double zepp.
|Method: YAESU FT-1000MP MkV, COMPUTER RUNNING SPECTRAN V2 SOFTWARE WITH AUDIO IN FROM RIG. INDIRECT MEASUREMENT. TRANSMIT FREQUENCIES CALCULATED FROM OFFSET RECORDED BY TOOL USED|
Soapbox: COMPUTER RECEIVING AUDIO FROM RIG, RUNNING SPECTRAN SOFTWARE TO RECORD AND MEASURE SIGNAL PEAKS. COULD NOT COPY CW, SO LISTENED FOR TONES. ONLY COPIED 80M TRANSMISSION FROM WA6ZTY, MOST LIKELY ON GROUND OR NVIS WAVE AT STANFORD RADIO CLUB STATION W6YX. BASED ON MEASUREMENTS, BOTH SIGNALS HAD SAME SEPARATION, WITH DIFFERENT OFFSETS FROM LSB CARRIER.
|Method: TS-B2000 calibrated against WWV + Spectrum Lab calibrated against WWV audio reference tones.|
|Method: WWV for calibration, Spectrum Lab for frequency measurement, IC-706MKIIg receiver.|
Soapbox: Signals were very poor. I copied the CW from ARRL on 40 M, but didn't hear the tones? A station centrally located in the US would provide much better coverage than east and west stations. Trying to measure a very weak signal that only lasts 10 seconds is very difficult.
|Method: ICOM IC-706MKIIG + CR282
Standard WWV and CHU display calibration
Spectrum Lab software|
Soapbox: Only heard the 80-m W1AW signal. I presume it was because I was using a 6-m antenna and not my longwire. I listened for WA6ZTY but nothing was heard. I off tuned to 3598.0 so had extra math to account for the non-nominal 3597.5 W1AW nominal frequency. Did I get it corrected correctly? CHU 7335 appeared off frequency by 1-Hz compared to other standard carrier frequency stations.73
|Method: ICOM IC-746PRO with HSO.
Spectran by I2PHD and IK2CZL.|
Soapbox: Could not copy W1AW.
|Method: Kenwood TS520SE, 40M/CW settings, audio output running to computer sound card, signal captured to wave file. Analysis was performed using Spectrum Lab software. First the CW portion of the signal was measured to determine the reference frequency to subtract from the audio tones. This offset was then subtracted from the freq of each tone to result in each tone's corrected frequency. Tone 1 is 1354, Tone 2 is 715, difference is 639. Tone 1, according to Nov 2008 QST, page 61, need to be the higher frequency since it is showing as a higher offset from the Carrier Frequency. The FMT entry page appears to swap the Tone 1 and Tone 2 values, so I wanted to make clear that Tone 1 is the higher of the 2.|
|Method: Kenwood TS-480HX - Factory Calibration two years ago
Cheap on motherboard sound card
Soapbox: Just having fun. Too many variables in the system. Good strong sigs from W1AW here at EM84ml.
|Method: Direct conversion scheme, with signal generator synch on GPS standard. Audio tones generated are recorded and analyzed with Spectrum Lab software. See my web site: http://www.geocities.com/ve2_azx/FMT/fmt_info.htm|
Soapbox: Could not copy 40m signal.
|Method: dipole, TS-850, LSB-wide, record audio. Cool-Edit software to select tones, then FFT with interpolation to measure audio tones, averaged over the 3 tests.|
Soapbox: Tried for west coast but W1AW was still transmitting on same frequency.
|Method: FT-920 Direct Frequency Measurement|
Soapbox: No propagation to IA on 40 meters.
|Method: CALIBRATED FREQUENCY COUNTER AT RECEIVER AUDIO OUTPUT|
Soapbox: SERIOUS INTERFERENCE ON 80 METERS BEGAN JUST BEFORE FMT. COPIED RTTY BULLETIN PREVIOUSLY WITH PERFECT COPY - GOOD SIGNAL. 40 METERS WAS UNREADABLE WITH STRONG SSB SIGNALS ON FREQUENCY HERE.
|Method: A Trimble Thunderbolt GPS-Disciplined 10 MHz reference calibrates a Yaesu FT-817 in LSB mode. Audio is then fed to Spectrum Laboratory FFT / Data Log File. Data is then analyzed and averaged with Excel spreadsheet to arrive at final numbers for submittal.|
Soapbox: Here in Arizona, W1AW had the better signal on 80 meters, but was weaker (but still usable) on 40 meters. WA6ZTY was stronger than W1AW on 80 meters, but had quite a bit of Doppler; WA6ZTY was inaudible on 40 meters, probably due to a long 'skip zone'.
|Method: Yaesu FT-100D, Cool Edit Pro for some selective cutting and prefiltering (selective frequency QRM elimination) of the recorded WAV file, before analysis by Spectrum Lab software. Dell laptop with onboard sound card; calibrated to WWV's audio tones over phone line.|
Soapbox: Enjoyed this FMT after having been away for a few years. WA6ZTY not heard on my meager antenna. W1AW Signal/Noise ratio on 80m was not good here in southeastern New York. 40 was so noisy (voice QRM and pulse noise) that I hardly thought it worth the time, but here are the numbers anyway. No fancy test equipment here. This is my first time using Spectrum Lab software, so I've got lots more to learn.
|Method: IC-756ProIII Homebrew software spectrum analyzer|
|Method: I recorded the entire session with Audacity, set to the highest sampling rate my sound card could muster. Then I analyzed it, by generating a test tone on a separate track, and through trial and error, I got it to within 0.1 Hz of zero-beat. Then I counted beats in 10 seconds to get the 1/100 Hz value.
I repeated this for each frequency, including the "carrier", even though there was no requirement to do so.
The frequencies I determined were then subtracted from the "published carrier", yielding the "ssb" tone frequencies.
Immediately before and after the test, I recorded the frequencies of WWV on 2.5 and 5 MHz, and CHU on 3.33 MHz. There was measurable Doppler shift on each frequency.
I applied a "correction factor" based on a statistical average of these frequency measurements.
In any case, even though I could be off on the actual RF frequencies I measured, the difference between the tones will be as accurate as my method allows, regardless of RF error.
The actual RF frequencies measured after applying my Doppler/drift correction factors are:
Carrier: 3597497.27 Hz
Tone1: 3596779.84 Hz
Tone2: 3596140.12 Hz
Receiver 1: Icom IC-751A
Receiver 2: Icom IC-R71E
Computer: Homebrew PC
Soundcard: Soundblaster Live Pro
Ears: Vintage 1952
Spreadsheet: Star Office 8
Antenna: Random wire at 20' to reduce low-angle noise|
Soapbox: Good signals on 80m, but 40 was completely inaudible. No luck hearing WA6TZY this time.
|Method: 80M - Inverted-V Dipole antenna, IC-746PRO receiver with 1.5 kHz bandwidth, Spectran V2 Build 216 software spectrum analyzer, Toshiba Satellite computer / Zero-beat (CW mode) W1AW CW carrier on 3,597.5 kHz then measured tones (SSB LSB mode) using spectrum analyzer 40M - Horizontal Dipole antenna, IC-746PRO receiver with 1.5 kHz bandwidth, Spectran V2 Build 216 software spectrum analyzer, Toshiba Satellite computer / Calibrated receiver with WWV 5 MHz (zero-beat in CW mode) then set receiver to W1AW on 7,095.0 kHz and measured tones (SSB LSB mode) using spectrum analyzer.|
Soapbox: Signal Quality - 80M signal was very strong, better than 50 dB above noise, but with no spurs. 40M signal was about 5 dB above noise with heavy QRM from phone stations.
|Method: IC-7800 locked to GPSDO
Analysis software was Spectrum Lab|
Soapbox: Conditions were good enough to enable measurements on all four test signals. 80M W1AW and 40M WA6ZTY sigs were strong. 40M W1AW and 80M WA6ZTY sigs were weak but measureable. Interference was not an issue. The data obtained during the 40M W1AW run was the most "noisy". Nobody can complain that the test took too long!
|Method: Set receiver to 3597.5 khz, had audio piped to headphones and SENCORE FC71 frequency meter. Read frequency as indicated and made calculations per instructions in November 2008 which apparently was NOT what was wanted.|
Soapbox: This test was a real stinker! Called Joe Garcia at ARRL and found that the reporting form was in error and that they were correcting it. Giving each tone 30 seconds (instead of 10) would be very helpful in making the measurement. So at least here are my results.
|Method: TT Jupiter and PSK31 Software on computer.|
Soapbox: No joy on 40 meters, band clear, no signals.
|Method: IC7800 calibrated to WWV and Spectrum Lab tested with WWV tones in LSB, USB and AM modes|
Soapbox: My first FMT after being a ham for 38 years! I tried to follow the QST article but have no idea if I did it correctly. I'll learn from this one and keep trying.
|Method: Ham Radio Deluxe waterfall!|
Soapbox: Got confused and didn't get to 40M. Oh well..
|Method: FMT Equipment Method: Method: Frequency measurements are referenced to a GPS based frequency standard (Brooks Shera, QST July 1998). The 10MHz output of the frequency standard drives an HP3586C. The synthesized tracking generator output 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 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 was then calculated using the beat note and HP3586C frequencies.|
Soapbox: 80 Meters: W1AW signal was very weak (S1~S2), WA6ZTY was strong (S9). 40 Meters: Both W1AW and W!6ZTY were in the noise and couldn't be copied. The short measurement time (10 seconds) and switching between two frequencies made measurement more difficult but at the same time more fun. I'm definitely looking forward to the Spring 2009 FMT.
|Method: ICOM 756 PRO III and Spectrum Lab for a direct measurement. Used CHU to calibrate and run a regression of errors both before and after the FMT. PRO III does not have high accurate oscillator so short term drift errors estimated at =/- 0.3Hz. 80 meters was a fair to good SNR from both W1AW and WA6ZTY. 40 meters the signals were barely discernible.|
Soapbox: My first FMT. Learned a lot. If I come in within a Hz, I'll be happy.
|Method: Kenwood TS2000, home made interface, Cool Edit Pro software.|
|Method: HP3586C with HP Z3801 time base , Spectran S/W|
Soapbox: Got interrupted so only measured the first one
|Method: My HP 3586B selective level meter is locked to GPS via a HP Z3801A GPS receiver/disciplined 10 MHz oscillator. The HP3586B is then tuned to the published carrier frequency and operated in demod mode. The audio output is fed to a computer running Digipan. The audio tones are displayed on Digipan. Clicking on a tones waterfall display causes Digipan to display the audio frequencies as they are received.
Before and after the FMT I checked the calibration of Digipan by generating calibration signals with a HP3336B signal generator. Despite this calibration, doppler shift still makes precise frequency measurement a bit of a guessing game.|
Soapbox: I was not able to hear any signal from W1AW on 40 meters. The 80 meter signal from W1AW was about S5 and gave a good display on Digipan. WA6ZTY was about S8 on eighty meters and also gave a good display on Digipan. WA6ZTY was very weak at my QTH in Southern California. I don't have much faith in my 40 meter measurement from WA6ZTY on 40 meters. But Digipan did give a slight display and thus I am submitting my WA6ZTY 40 meter measurements despite my not having much confidence in them. Marvin, W6OQI
|Method: Kenwood TS-940s, 80m dipole at 20 feet, Computer running DL4YHF's Amateur Radio Software: Audio Spectrum Analyzer("Spectrum Lab"), DSI Model 5612 Frequency Counter, Exact Model 126 VCF/Sweep Generator|
Soapbox: W1AW 80m signal fair to weak, 40m signal weak in Tucson. WA6ZTY 80m signal fair, 40m undetected. Calibrated Spectrum Lab on PC with sweep generator which was calibrated to frequency counter calibrated to WWV.
|Method: WJ-8716 Rcvr / Rb Std / DL4YHF's Spectrum Lab|
Soapbox: No sigs on 40m, heavy SSB QRM from EU.
|Method: 3686B - Spectrum Lab - GPS time base|
|Method: JRC-145 XCVR, HEATHKIT IG-42|
Soapbox: UNABLE TO RECEIVE ANY SIGNALS AFTER THE CALLUP DUE TO ATMOSPHERIC NOISE AND PROPAGATION ON EITHER BAND MAYBE NEXT TIME
|Method: Elecraft K3, +/-1 ppm TCXO, fldigi 3.04AX on Ubuntu Linux, Griffin iMic USB external sound device. Calibrated K3 and sound device to WWVH on 10 Mhz prior to event.|
|Method: Yaesu FT-897, G5RV, Heathkit IM-4100 counter|
Soapbox: Could hear W1AW or anything on 40M, signals were very noisy on 80M. Hard to lock on the tones.
|Method: Using Flex-Radio 5000 Calibrated my Flex5000 against WWV and a Racal-Dana 1992. Used the Panadapter cross hair to measure the frequency|
Soapbox: This is my first time to do this. Not really prepared.Propagation was terrible. 80meters was about 2 s-units above the noise. 40meters was right in the noise. No CW copy on 40 to speak of. This was a fun test.
|Method: Long wire antenna, Heathkit AC-1 antenna coupler,
FT-100D receiver, Tektronix AFG310 Function Generator, HP 34401A Multimeter, Keithley 2000 Multimeter, Tektronix 2230 Scope in XY
Setup allows me to beat the sideband tone against a generated tone and then adjust the frequency of the function generator until the lissajous pattern is stable on the screen. For noisy signals should be able to get tones within 0.1 hz.|
Soapbox: Numbers are all fake, but your web site made me do it. Hmm! Heard CW on 80 meters from W1AW and only occasional bursts of tone. Nothing on 40.No luck tonight as I am right downtown Minneapolis and recent rain and snow has made the electrical environment very noisy. Thanks, will try again in the spring.
|Method: Icom 718 H/P computer using software Musical Tuner v1.2 W.A.Steer 2001 and Spectrum Analysis W.A.Steer 2003
Antenna Home Brew Carolina Windom @30ft.|
Soapbox: Tuff copy on 80m no copy on 40 only heard tones on 80m
|Method: First ARRL FMT. Used simple equipment - warmed up Icom ProIII, Navigator rig/soundcard to USB interface and Spectrum Lab software. Recorded to file with SL, did some analysis live and more detailed visual analysis of FFT later, picking out frequency centroid by eye on the expanded waterfall.|
Soapbox: W1AW was not strong and had very noticeable doppler, WA6ZTY was S9+20 and solid (groundwave). Just learning Spectrum Lab, probably could do better with the recorded data analysis, lots of capability on the software beyond what was used for these numbers.
|Method: XCVR = Icom IC-746 (Not the '746pro)
Freq. Measurement was via a Tektronix TX1 DMM connected across the connections in the headphone jack, measuring the audio tones directly. '746 was set to 3.5975MHz, CW (Not LSB). The last, and ONLY calibration date for the TX1 was 23-July-1998 at the factory.|
Soapbox: This is the first time I've participated in one of these events. I reckon I was a LITTLE confused by the text on page-61 of Nov-08 QST that said "80 meters: 3597.5kHz, LSB." I switched from LSB to CW, heard tones, and read & recorded the DMM's display as the tones changed. TNX fer an interesting adventure. 73 -John, WB7EHX P.S. Not sure what's up with this web-page; It wouldn't accept the frequencies I entered in kHz; The "1001" entries I made represent a measurement not made. The non-zero values are in Hz.
|Method: TS-480SAT with based loaded 15.5 foot vertical whip. Transceiver was calibrated using WWV audio tones of 1000 Hz and 500 Hz at 5.000 MHz. Hamscope software was utilized to record audio singals of WA6ZTY.|