| Call | QTH | Area | | Method/Soapbox |
| AA6LK | CA | W6 | | | 160m | 80m | 40m | | K5CM | 1,841,988.57
0.00 | 3,598,131.26
0.04 | 7,064,322.58
0.21 |
| Method: HP Z3805A 10MHz GPSDO, Marconi 2019 HF synth, HP 3325A LF synth, HP 54601A o'scope, FT-847 in AM/narrow mode, 5BTV antenna, Vista laptop running SpecLab, DigiPan for spotting, EZGPIB controlling Prologix USB-GPIB to set up and interrogate instruments, GPSCon for monitoring Z3805A; the 2019 was set to inject a reference beat signal to produce a ~400Hz beat tone, and the 3325A was tuned for minimum phase slip between it and the beat tone. Each run was recorded to a .wav file through SpecLab, and at a later time replayed to export data to spreadsheet to refine submission numbers.
Soapbox: Very weak signal on 160M but usable. Lack of short skip helped to reduce multipath variations. This time I sampled WWV2.5 and WWV5 during the "dead time" to get a better sense of the multipath distortion for adjusting the submission numbers. Thanks Connie for running the test.
73, L |
| AA8K/C | MI | W8 | | | 160m | 80m | 40m | | K5CM | | 3,598,300.00
168.78 | 7,064,400.00
77.63 |
| Method: Vintage – Collins 75A-4 receiver (this one built in 1959). Just before the FMT, I zero-beated the 100 KHz calibrator against 15 MHz WWV. I missed the 160 meter signal because I was busy trying to find it with the Lampkin. |
| AA8K/L | MI | W8 | | | 160m | 80m | 40m | | K5CM | 1,841,971.00
-17.57 | 3,598,333.00
201.78 | 7,064,000.00
-322.37 |
| Method: Vintage – Lampkin 105-B Micrometer Frequency Meter (1940) used as a heterodyne source and a Collins 75A-4 receiver (1959) used in AM mode to hear the beat. I modified the Lampkin for ham bands and created a calibration chart to be used for the FMT. I do not have the original calibration book. I did not use the line-voltage regulator. It is a fascinating device. I will write up more for the FMT-nuts group. |
| AB2UW | NY | W2 | | | 160m | 80m | 40m | | K5CM | | 3,598,131.13
-0.09 | 7,064,322.65
0.28 |
| Method: 98' long W5GI dipole oriented E-W connected to Icom IC-7000; SignaLink interface to laptop running Spectrum Lab. After key down period, switched radio input to HP 3335A frequency synthesizer output (through 70 dB of attenuation). Thunderbolt GPSDO 10 MHz reference signal was fed into external ref. input of 3335A. Tuned synthesizer frequency and amplitude to best match appearance of key-down signal on Spectrum Lab waterfall.
Soapbox: Good signal on 80m (-93dBm at radio input), weaker on 40m (-102dBm). Very disappointing that no signal was seen/heard on 160m. Setup can easily detect a -120 dBm signal at the radio input, but nothing was seen on the Spectrum Lab waterfall when tuning on 160m for the FMT signal. |
| AB4RS | VA | W4 | | | 160m | 80m | 40m | | K5CM | 1,841,988.58
0.01 | 3,598,131.17
-0.05 | 7,064,322.37
0.00 |
| Method: Received the signall using the HP3586B Selective Level Meter locked to the 10 MHz reference from a Trimble Thunderbolt GPS receiver. Sampled the audio IF from the HP3586B, and analyzed it using Spectrum Lab. Calibrated the sound card sampling rate using the HP3336C Frequency Synthesizer.
Soapbox: Decent signals into Northern Virginia. Received the 40m signal at -90.4 dBm, 80m at -72.2 dBm, and 160m at -100.4 dBm, with about 10 dB of fading. Had to get the dartboard about which trace to use on 160m. Fun as always. |
| AC2IK | NY | W2 | | | 160m | 80m | 40m | | K5CM | 1,841,984.73
-3.84 | 3,598,128.45
-2.77 | 7,064,326.25
3.88 |
| Method: Icom 718 and FLdigi USB
Soapbox: Harder than I thought it would be. Ill be more prepared next year |
| AC5P | OK | W5 | | | 160m | 80m | 40m | | K5CM | 1,841,987.00
-1.57 | 3,598,131.00
-0.22 | |
| Method: Stock K3 calibrated to WWV
Soapbox: My 2nd FMT. Used auto spot feature of K3 to match tones.
40M signal too weak in noise to measure.
Skip too long for short 80 mi distance from K5CM. |
| AC9LV | IL | W9 | | | 160m | 80m | 40m | | K5CM | 1,841,986.00
-2.57 | 3,598,113.00
-18.22 | |
| Method: FLEX 1500 and Motorola R1200AS Service Monitor.....zero beat
Soapbox: Nothing heard on 40 meters...poor conditions. 80 was weak, and heard 2 or 3 dead carriers near 3598mhz 160 QRM @ QTH. Thought I'd give it a try just for fun. Didn't cost a thing HI HI |
| AD8Y | OH | W8 | | | 160m | 80m | 40m | | K5CM | 1,841,985.00
-3.57 | 3,598,132.00
0.78 | |
| Method: Kenwood TS-450S
Rigblaster Advantage
Sigview spectrum analyzer
Warmed up transceiver for 12 hours. Watched WWV during the hour or so before on 2.5 and 5 MHz. Transceiver tunes in 10 Hz increments, so followed beat frequency across the sidebands carefully and took best guess. Verified calibration of soundcard against WWV audio frequency signals using AM detector.
Soapbox: Did not hear 40 meter signal at all.
I rather hate to admit it--but this is fun. I have acquired an oven-controlled crystal oscillator and a GPS board; a winter project will be a GPS-disciplined oscillator to run a DDS comparison oscillator.
Thanks, K5CM, for running this show. |
| AE2A | FL | W4 | | | 160m | 80m | 40m | | K5CM | | 3,598,131.18
-0.05 | 7,060,522.40
-3,799.97 |
| Method: TS-990S Calibrated to WWV and long-term stabilized.
Fldigi calibrated sound card to WWV and added 22 ppm correction.
Recalculated the data and subtracted the offset for LSB (Fldigi calculates for USB)- oops on the first submission!
Soapbox: Very poor propagation due to high noise from Solar Storm passage.
Had to recalculate the negative offset! |
| AE5P | TX | W5 | | | 160m | 80m | 40m | | K5CM | 1,841,988.60
0.03 | 3,598,130.98
-0.25 | 7,064,322.68
0.31 |
| Method: Flex 6700 w/GPS to FLDigi in Freq. Analysis Mode
Soapbox: Very weak signals this time made this a special challenge. Will be very interesting to see the results. Great fun. Many thanks to K5CM for his fine work on this. |
| AF5YD | TX | W5 | | | 160m | 80m | 40m | | K5CM | 1,841,988.50
-0.07 | 3,598,131.00
-0.22 | |
| Method: Receiver Icom IC-703 with 400Hz CW filter
Sound card in MSI netbook computer
Radio Shack 22-306 frequency counter
Headphones with volume control in cord
Adapters and Cables:
I set the Icom receiver in CW R mode. In this mode a higher RF frequency produces a higher audio frequency.
Mono to stereo adapter on receiver phones plug provided receiver output to both R and L outputs
Stereo phone plug to RCA phono jacks adapter provided two connections for receiver audio
RCA Phono plug to phones jack followed by mono to stereo phones adapter provided receiver audio to headphones
Same sequence of RCA to phone to stereo phones jack adapters on the other RCA phono jack connected to stereo phones cable to computer sound card mike input connector
Computer sound card was adjusted to produce over driven square wave outputs at computer headphones connector.
Phones plug to RCA phono jacks adapter converted sound card output to RCA phono jacks
Cable with RCA phono plugs carried signal for frequency counter
BNC plug to RCA phono jack adapter connected signal to frequency counter input
This equipment lets me hear the receiver audio and measure an audio frequency derived from the carrier frequency.
Method:
All equipment was turned on hours before the test so that receiver is well stabilized from warm up drift.
The Icom IC-703 derives all internal frequencies by phase locked loops and direct signal synthesis from a single crystal oscillator time base. This means that any frequency errors are proportional to the frequency error in the time base. After warm up the receiver the frequency as measured by calibration against WWV is stable to about 200 parts per billion or better.
The Icom IC-703 provides tuning with 1Hz resolution in CW mode. In CW mode, the receiver produces audio output tone at 600Hz. When set up in CW R (reverse) mode the receiver is in upper sideband mode. This mode is convenient for frequency measurement because a higher audio frequency correlates with a higher radio frequency.
A frequency measurement session involves tuning the receiver at or near the radio frequency and taking multiple audio frequency measurements using the frequency counter. Taking multiple measurements provides information for statistical analysis. The statistics provide better resolution than the count with one second gate time. The statistics also indicate the reliability of the
measurements by measuring how much scatter there is in the set of measurements.
Precalibration:
Before the frequency measuring test I ran a calibration test run measuring the frequency of WWV at 5.0MHz. I recorded 33 samples from the frequency counter with ten seconds gate periods in this run.
Frequency Measurement Test
I did not find the 40m frequency test signal.
I collected 44 measurements with one second gate time from the 80m test frequency with the receiver set at 3598128Hz.
I collected 46 samples with one second gate time in the first period of the test tone and an additional 25 samples of the test tone after a separation of transmitted sequence of dits.
Post Calibration
After the frequency test I ran a post calibration test taking 84 one-second samples of WWV at 2.5MHz.
I ran another post calibration test taking 26 ten-second samples from WWV at5.0Mhz.
I used ten second gate periods for the 5.0MHz WWV calibrations because the signal was strong with little fading. I used one-second gate periods for WWV at 2.5 MHz because the signal was fading but was stable for long enough to get samples in the shorter time scales.
Statistical Analysis
I used my Texas Instruments TI-30Xa calculator's built in statistics functions to analyse the data sets. The calibration data sets yielded calibration offsets which I converted to parts per billion to correct for receiver time base accuracy. Having calibrations both before and after the tests also evaluated how much the receiver time base drifted during the tests.
The statistical results indicated a systematic error of about 120 parts per billion. This correction amounted to 0.435Hz at the 80m test and 0.223Hz on the 160M test. Estimated error on both sets of frequency tests is around 0.08Hz.
Soapbox: Calibration of equipment is critical for precision of measurements. My calibrations tests showed me that I had time base errors around 135 parts per billion in my receiver and allowed me to correct for them. Those tests also showed me that the calibration drift was no more than about 25 parts per billion over the period of the tests.
Taking multiple samples and using statistical analysis provides better estimates of the measured quantity and also measures the reliability of those measurements. |
| AF7QZ | WY | W7 | | | 160m | 80m | 40m | | K5CM | 1,839,997.30
-1,991.27 | 3,598,131.15
-0.07 | 7,064,322.35
-0.02 |
| Method: anan-10e with HP GPS stabilized 10mhz frequency source.
Soapbox: I'm not sure I ever heard the 160M signal, but the others came in well.
There was lots of JT9 and JT65 near the frequency for 160m. |
| AF9A | IN | W9 | | | 160m | 80m | 40m | | K5CM | 1,841,995.64
7.07 | 3,598,131.07
-0.15 | |
| Method: HPSDR Mercury, 10 MHz OCXO calibrated with WWV & CHU.
Soapbox: No signal detected on 40m. 80m signal was 40dB above the noise and stable. 160m signal was 10dB above the noise at best with QSB. Thanks Connie. |
| AG2M | NY | W2 | | | 160m | 80m | 40m | | K5CM | 1,841,988.37
-0.20 | 3,598,131.40
0.18 | 7,064,322.83
0.46 |
| Method: FT-950 Dell Notebook running Spectrum Lab
Soapbox: 40M signal in mud with QRN
Thanks to Connie and ARRL for event |
| AJ4YA | NC | W4 | | | 160m | 80m | 40m | | K5CM | | 3,598,129.00
-2.22 | 7,064,317.00
-5.37 |
| Method: Flex 1500 / Fan Dipole 40m and 20m
WAG
Soapbox: GO Wolfpack |
| K0JEG | CO | W0 | | | 160m | 80m | 40m | | K5CM | 1,841,990.00
1.43 | 3,598,130.00
-1.22 | |
| Method: Icom IC-9100
Soapbox: Lots of QRM at QTH on 40M, did not hear. Want to establish a baseline for this transceiver and build on it from here. Will likely have GPS disciplined reference for next test. 73 Eric K0JEG |
| K1GGI | MA | W1 | | | 160m | 80m | 40m | | K5CM | 1,839,680.12
-2,308.45 | 3,598,131.17
-0.05 | 7,064,323.09
0.72 |
| Method: heterodyne with known signal, find beat with SpectrumLab
Soapbox: considerable spread on 40, nothing heard on 160 so picked the spectral line that looked least like 60cycle buzz |
| K1IG | MA | W1 | | | 160m | 80m | 40m | | K5CM | | 3,598,131.08
-0.14 | 7,064,322.25
-0.12 |
| Method: K3 and FLDigi. Calibrated with CHU and WWV.
Soapbox: 40M and 80M were barely detectable in MA; 160 not at all. |
| K1KC | GA | W4 | | | 160m | 80m | 40m | | K5CM | 1,842,362.00
373.43 | 3,598,478.00
346.78 | 7,064,504.00
181.63 |
| Method: IC-756 xcvr running FLDigi with FFT display. |
| K2AVI | WA | W7 | | | 160m | 80m | 40m | | K5CM | 1,840,000.00
-1,988.57 | 3,598,000.00
-131.22 | 7,064,000.00
-322.37 |
| Method: icom 7600 / i used the procedure as described by K5CM on the website k5cm.com. created a spreadsheet to do all the number crunching after collecting the on-air beat cnt and time cnt.
Soapbox: first time participant. how sad. could not hear any signals at all. band conditions were abysmal. ignore the freq entries. could not send this in unless something was entered. |
| K2LYV | FL | W4 | | | 160m | 80m | 40m | | K5CM | 1,840,000.00
-1,988.57 | 3,598,131.64
0.42 | 7,064,322.78
0.41 |
| Method: Combined WSPR software plus SPECTRAN.
Soapbox: Couldn't hear the 160M signal at all. Other two quite clear. |
| K3KO | FL | W4 | | | 160m | 80m | 40m | | K5CM | 1,841,988.57
0.00 | 3,598,131.10
-0.12 | 7,064,322.11
-0.26 |
| Method: TS-480 + Spectrum lab. Generate calibration curve using WWV/CHU at 4 frequencies. Use dial frequency, measured pitch and calibration curve to infer unknown frequency.
Soapbox: Just moved. All precision equipment in storage. Portable rig + Z shaped 40M dipole in the garage used. Surprisingly could hear K5CM all bands. 40 was in and out of the noise, 80 S9+ and 160M S3. Manual method allowed ample opportunity for math errors. |
| K4CGY | VA | W4 | | | 160m | 80m | 40m | | K5CM | 1,842,668.00
679.43 | 3,598,816.00
684.78 | 7,065,012.00
689.63 |
| Method: Ten-Tec Omni VII / Sound Card
Soapbox: Great FMT and my first. Signal strength very good on all bands |
| K4CXX | FL | W4 | | | 160m | 80m | 40m | | K5CM | 1,841,989.40
0.83 | 3,598,132.10
0.88 | 7,064,324.60
2.23 |
| Method: Vintage -- Communications grade receiver with synthesizer capable of tenth-Hertz precision checked against WWV-10. Used "Double Carrier Heterodyne" method for zero-beating incoming signal with synthesizer output that had been adjusted for similar signal amplitude as unknown frequency.
Soapbox: It was a good run, but local QRN limited reception. Signal levels from K5CM were good. Thanks to all who organized this. |
| K4KJQ | KY | W4 | | | 160m | 80m | 40m | | K5CM | 1,841,988.56
-0.01 | 3,598,130.99
-0.23 | 7,064,329.30
6.93 |
| Method: Rubidium Oscillator, Homebrew Superhet receiver using a PTS160 synthesizer a local oscillator, USB audio adapter clocked by 12MHz derived from the Rubidium oscillator, and SpectrumLab
Soapbox: Strong signals on 160 and 80 meters but could not hear a thing on 40 Meters. There was a signal that appeared in FFT about the right time about 3 minutes into the test and just guessing that was it. However, concerned because I did not see tune up or anything else. Perhaps luck will be with us. Doppler shift very strange this time.
73 WA4LAV |
| K5CM | OK | W5 | | | 160m | 80m | 40m | | K5CM | 1,841,988.57
0.00 | 3,598,131.22
0.00 | 7,064,322.37
0.00 |
| Method: TX Antennas:160m vertical (almost). 80 meter dipole slopping down from a 80' tower. 40 meter dipole between two 80' towers, 4 element SteppIR. For RX I use an FT-1000D in AM mode with a PTS-250 for low side injection. Audio is feed to SpectrumLab. Other RX antennas include three 500' Beverage
Soapbox: It seems conditions were poor for this FMT, with many stations reporting no copy on 40 meters. It seems the skip was very long on 40.
For transmitting the FMT I use an HP-Z3801 GPS frequency source which clocks a HP-3336b or a PTS-250. This feeds a 10 db transistor amp which drives a 12by7 / pair of 6146. The final amp runs about 400 watts. There are no mixers or any device in the chain of amplifiers that might impact the accuracy of the GPS frequency source. I verify the accuracy of the TX system with a separate RX system.
73, Connie, K5CM |
| K5RKS | OK | W5 | | | 160m | 80m | 40m | | K5CM | 1,841,987.95
-0.62 | | |
| Method: Signal Injected about 1Khz below K5CM's signal received off the air. The injected signal was provided by HP3336B which was controlled by external 10Mhz GPS disciplined clock. K5CM's frequency determined using homebrew software that shows both signals on waterfall display. I'm using FFT to measure audio tones output from receiver as a result of receiving both off the air carrier and injected carrier.
Soapbox: 40m: I could only hear the slightest whisper. I had S-9 noise level and signal level was never at a usable level. There were a few times during key down that I could just barely make out K5CM signal but this only lasted for a few seconds. I was not able to make any measurements on 40m. At the end of the 40m run I heard K5CM's call once so I know it was him. 80m: I had S-9 noise level. Couldn't hear even the slightest trace of K5CM signal. 160m: K5CM's signal was about S3. It was usable. I was able to get 10 separate 8sec measurements on 160m and all of them except one were within 0.1Hz. So I tossed out the outlier and since all the rest of the measurements were the same (i.e. they were in the same FFT bin) then I reported that result. Note: My FFT bin size is about 0.12Hz. I'm in Oklahoma City which is about 140 miles west of K5CM. I guess conditions were such that K5CM's signals skipped right over me since I was "too close" to him. |
| K6APW/7 | OR | W7 | | | 160m | 80m | 40m | | K5CM | 1,841,988.53
-0.04 | 3,598,131.12
-0.10 | 7,064,322.85
0.48 |
| Method: Ten-Tec receiver calibrated by beat to WWV with audio oscillator and audio hybrid combiner. Measurement with same set up and calculate correction error to determine transmited frequency.
Soapbox: Good signals on 40M and 80M. Some voice QRM on 40M, QSB on 80. Signal on 160M about S3 with significant QRN and QSB toward the end.
My thanks to Connie for his effort. |
| K6BEZ | CA | W6 | | | 160m | 80m | 40m | | K5CM | | 3,598,130.95
-0.27 | 7,064,322.01
-0.36 |
| Method: Flex-1500 Calibrated to WWV Signal. This was fed into Spectrum Lab and FLDigi. Multiple readings were averaged.
Nothing heard on 160m, but my antenna is short.
Soapbox: Intended to lock my Flex-1500 to my GPS conditioned 10 MHz source. I think the noise from this source is too high and the DDS inside the Flex was kind of overwhelmed.
Moral here: Give yourself more than 24 hours to prep ;-) |
| K6HGF | CA | W6 | | | 160m | 80m | 40m | | K5CM | 1,840,767.10
-1,221.47 | 3,598,131.10
-0.12 | 7,064,322.40
0.03 |
| |
| K7HIL | AZ | W7 | | | 160m | 80m | 40m | | K5CM | 1,840,004.39
-1,984.18 | 3,598,131.16
-0.06 | 7,064,322.49
0.12 |
| Method: Measured (calibrated) CW pitch frequency with Spectrum Labs. Used {dial frequency + cal cw pitch - measured CW pitch) to get results. All equipment referenced to GPSDO.
Soapbox: 40M barely discernible signal, no indication on S meter or band scope. 80M good signal that varied from S4 to S8, some Doppler of course. Never heard a thing except some JT65 on 160. Set up multiple small bins and saw activity on 1840004 and did analysis on that (almost) signal and am in "serious hope". Thanks Connie |
| K9KK | OK | W5 | | | 160m | 80m | 40m | | K5CM | 1,841,988.32
-0.25 | 3,597,480.15
-651.07 | 7,064,322.04
-0.33 |
| Soapbox: FMT signals were strong. BUT, MY VERY HIGH noise level still buried them.. Entries are a guess. |
| KA5QEP | OK | W5 | | | 160m | 80m | 40m | | K5CM | 1,842,050.00
61.43 | 3,598,100.00
-31.22 | |
| Method: Vintage Equipment Eddystone EC958/3. Calibrate bfo and frequency readout to nearest 10 KHz using the built in calibrators using zero beat. Read dial to nearest KHz and estimate fractional KHz after zero beating signal.
Soapbox: I rescued this early 1970s receiver from a scrap heap. It was dead when I got it. I had to rebuild the power supply and front end and do a full alignment. Now it's working up to specs. It's a pleasure to use. There's no phase lock synthesizer, but it does use a Wadley loop to obtain accurate 100 KHz spaced first LO signals. The second oscillator is analog and very stable, tuning over a 100 KHz range. There is no phase noise in the oscillators. No digital frequency readout, everything is on dials, driven by lots of gears and is quite accurate. The inside looks like an old clock. I've got a few other old receivers that I want to try the FMT on. |
| KA8LGI | MI | W8 | | | 160m | 80m | 40m | | K5CM | 1,841,988.50
-0.07 | 3,598,131.22
0.00 | 7,066,774.00
2,451.63 |
| Method: Radio is a IC746, Frequency Meter is a HP 5334A, Filter Circuit Used to clean up WWV & Signal Under Test. Rb oscillator for frequency reference.
Soapbox: 40m a little ruff in MI. I might have record the wrong 80m dial read. |
| KB1PBA | MA | W1 | | | 160m | 80m | 40m | | K5CM | | 3,598,131.10
-0.12 | 7,064,322.94
0.57 |
| Method: KX3, SignaLink, Desktop PC, Windows 10, SpectrumLab FFT
Determine an average CalibConst using WWV & CHU (at 3.33, 5, 7.85 and 10 MHz before and after FMT transmissions)with FFT on audio in cw mode with KX3 pitch set to 500Hz. Then, CorrectedFreq = KX3dial + CalibConst - peakFFTtone.
Soapbox: First try at FMT. Learned a lot about HF propagation preparing for this. Thanks for providing the exercise. But, I may have logged the wrong KX3 dial reading for one (possibly both!) of the FMT measurements. Won't make that mistake next time! |
| KB3LTT | PA | W3 | | | 160m | 80m | 40m | | K5CM | | 3,598,139.21
7.99 | 7,064,331.49
9.12 |
| Method: FT450D - PC running Argo software I used FLDigi to make sure my sound card was introducing errors. I used WWV to determine the frequency offset between USB and LSB of the FT450D by using the Argo software. The 450D was too high in frequency by 4.76Hz. I set the 450D to receive in CW mode with an offset of 700Hz. When the FMT started I tuned in the signal as close to 700HZ as possible using the Argo display then read the actual audio frequency using Argo. Multiple readings were taken to lessen the error.
Soapbox: Signals on 40 and 80 meters were weak but readable. Nothing heard on 160 meters but that was not surprising from my location. This was my first FMT with this radio so it was good to get more familiar with it. |
| KC2LNC | NC | W4 | | | 160m | 80m | 40m | | K5CM | 1,841,987.95
-0.62 | 3,598,130.13
-1.09 | 7,064,320.74
-1.63 |
| Method: FT-990 Receiver on 43' vertical antenna. Tuned FMT transmission and measured tone at speaker output. Added dial indication on USB to the value of the audio tone. Then subtracted a standard deviation obtained through WWV measurements at several frequencies.
Soapbox: Hope I was able to get sub 1-Hz accuracy this time. Last time I was very close except one band and that was due to a math error. My radio has drifted a little since April so its always an interesting exercise. |
| KC9NBV | IN | W9 | | | 160m | 80m | 40m | | K5CM | 1,841,991.05
2.48 | 3,598,135.60
4.38 | 7,064,330.69
8.32 |
| Method: Flex 3000, Spectrum Lab V2.90 b2
Soapbox: First time participating in FMT, will try again April 2016 |
| KD0NEO | MO | W0 | | | 160m | 80m | 40m | | K5CM | 1,841,905.00
-83.57 | 3,598,041.00
-90.22 | 7,064,287.00
-35.37 |
| Method: ELECRAFT K3 |
| KD2BD | NJ | W2 | | | 160m | 80m | 40m | | K5CM | 1,841,988.57
0.00 | 3,598,131.18
-0.04 | 7,064,324.22
1.85 |
| Method: All homebrew equipment including a quadrature phasing direct conversion receiver, WWVB referenced frequency standard, frequency counter, and an end fed 43 foot long wire antenna. Method involved phase locking the receiver's LO to the frequency of the unknown carrier minus a 1 kHz offset, measuring the frequency of the receiver's LO over several 10 second integration periods, and taking a "selective average" of the readings after factoring in the 1 kHz offset. Details of my methodology are available at: http://www.qsl.net/kd2bd/fmt-methodology.html. Details of my frequency standard are available in the Nov/Dec 2015 issue of QEX.
Soapbox: The G1-level geomagnetic storm caused really poor propagation conditions, so I'm not expecting spectacular results. 40 meters was almost completely dead, and Connie's signal was so weak it barely poked its head out of the background noise. Signals on 160 were slightly better. (Both transmissions were copied.) Signals on 80 were strong, but frequently suffered from very deep fades. While HF was a mess, WWVB on 60 kHz was SOLID. TNX everyone! 73.000 de John, KD2BD |
| KD5MMM | TX | W5 | | | 160m | 80m | 40m | | K5CM | 1,841,988.60
0.03 | 3,598,131.50
0.28 | 7,064,322.60
0.23 |
| Method: FT847, Speclab, CHU reference
Soapbox: 40m was very weak here, 80m and 160m were ok.
Hope I'm close. 73 |
| KE5O | TX | W5 | | | 160m | 80m | 40m | | K5CM | 1,842,150.00
161.43 | 3,598,035.00
-96.22 | |
| Method: Vintage Farnsworth BC-312 on 12 volts with SG-103/URM-25F signal generator driving an HP 5385A freq counter. Calibrated on WWV 5 MHz.
Soapbox: Didn't copy 40. First FMT after 44 years of hammin'! Will try the BC-221 next time. |
| KE8B | FL | W4 | | | 160m | 80m | 40m | | K5CM | 1,841,988.52
-0.05 | 3,598,372.84
241.62 | 7,064,322.14
-0.23 |
| Method: ICOM IC-7200, FLDIGI |
| KG0HY | NE | W0 | | | 160m | 80m | 40m | | K5CM | 1,841,987.00
-1.57 | 3,598,131.70
0.48 | |
| Method: Turned on, computer, with WinRadio G313, at 0100Z. Used CHU 3.330MHz and WWV 2.5MHz, for calibration. Antennas, OCF 136 feet long dipole, also untuned 16 feet vertical.
Soapbox: There was no 40M signals. 80M faded in and out slowly. 160M was weak, and had a long slow fade. Casey KG0HY |
| KG4YDW | FL | W4 | | | 160m | 80m | 40m | | K5CM | | | 7,066,677.31
2,354.94 |
| Method: K3 and fldigi using frequency analysis mode. Calibrated radio as best as could, then collected 5 minutes of WWV numbers before and after. Offset FUT mean by wwv mean. |
| KG6HSQ | CA | W6 | | | 160m | 80m | 40m | | K5CM | | 3,598,131.03
-0.19 | 7,064,322.34
-0.03 |
| |
| KI0LS | MN | W0 | | | 160m | 80m | 40m | | K5CM | | 3,598,131.13
-0.09 | |
| Method: 8640B sig gen locked to Z3805A GPS freq std with beat frequency measured by SpecLab |
| KI5EE | LA | W5 | | | 160m | 80m | 40m | | K5CM | 1,841,988.40
-0.17 | 3,598,131.12
-0.10 | 7,064,314.48
-7.89 |
| Method: Kenwood TS-2000, Dell computer running Spectrum-Lab. Antennas are 40 & 80 meter inverted V's.
Soapbox: I never operate on 160 meters so I do not have an antenna for this frequency. I was glad that I was able to hear the signal using my 80 meter inverted V antenna. |
| KI7RM | OR | W7 | | | 160m | 80m | 40m | | K5CM | 1,840,009.19
-1,979.38 | 3,598,130.04
-1.18 | 7,064,324.60
2.23 |
| Method: A Flex-3000 was used to acquire the signal and was analyzed with FMT tools included in WSPR software.
Soapbox: First time I have done the FMT. Thanks to all who make it possible. Heard a moderately strong 40m signal. The 80m was weak, and I could not see or hear the 160m signal. Somehow the FMT software was able to decipher something there. Looking forward to the results. |
| KK4KAZ | FL | W4 | | | 160m | 80m | 40m | | K5CM | 1,840,988.42
-1,000.15 | 3,598,131.02
-0.21 | |
| Method: Homebrew GPSDO, Spectrum Lab
Soapbox: Test 1: Cockpit error - on wrong band!
Test 2: Clear stable signal.
Test 3: Heard nothing, but taking a chance on a very small peak. |
| KK5J | OK | W5 | | | 160m | 80m | 40m | | K5CM | 1,841,988.50
-0.07 | 3,598,131.30
0.08 | 7,063,329.00
-993.37 |
| Method: HP Select level meter
Soapbox: Heard K5CM on 40 but propagation was poor. 40 mtr entry is swag. Lots of absorption I think. 80 and 160 were solid. Thanks again to Connie and others for all of the effort. |
| KK6PTR | CA | W6 | | | 160m | 80m | 40m | | K5CM | 1,839,971.04
-2,017.53 | 3,598,132.25
1.03 | 7,064,333.29
10.92 |
| Method: Yaesu FT-991 on MFJ Dipole with HP PC running Windows 7 & Spectrum Lab v2.82
Soapbox: First time trying this, copied 40m & 80m OK. There was a carrier on 160m prior to the start time that faded and reappeared during the key down so I tuned around searching for alternates, but could not confirm it was K5CM or the prior signal. Thanks to K5CM & WA7BNM. |
| KM6QX | CA | W6 | | | 160m | 80m | 40m | | K5CM | 1,839,995.13
-1,993.44 | 3,598,131.29
0.07 | 7,064,322.23
-0.14 |
| Method: Pixel Loop antenna into a Flex-1500 locked to GPSDO. Received in CW mode, fixed AGC, then measured ~600 Hz tone with Spectrum Lab. Selected most probable spectrum peak then corrected for Flex’s DDS VFO offset.
Soapbox: Had S6 signals on 40m and 80m, well above the loop antenna noise floor. 160m signal was not visible in noise, but Spectrum Lab found several signals. I hope I chose the correct one. Didn't wait to catch the 2nd run. |
| KN1H | NH | W1 | | | 160m | 80m | 40m | | K5CM | 1,841,988.94
0.37 | 3,598,130.35
-0.87 | 7,064,323.90
1.53 |
| Method: IC-7200, Spectrum Lab per VE3GSO QST article.
Soapbox: K5CM not very strong but in the clear on all three bands. Thanks for organizing the event, this is a lot of fun! |
| N0XC | WI | W9 | | | 160m | 80m | 40m | | K5CM | 1,841,994.70
6.13 | 3,598,135.78
4.56 | |
| Method: Trimble Thunderbolt GPSDO locked to HP3336B. Injected known low level signal loosely coupled to feed line of Elecraft K3. Audio tone delta analyzed by Baudline running on Ubuntu Linux.
Soapbox: Great fun- Had guests N9CHA and KC9ROI in the shack for the event (Wife even made us Cookies n Coffee). Not a peep on 40M but really good signals on 80 and 160. As always, hope my technique/math is right. Thanks to all that put this on. |
| N2END | NJ | W2 | | | 160m | 80m | 40m | | K5CM | | 3,598,131.09
-0.13 | |
| Method: Kenwood TS-570D calibrated against three broadcast stations, WWV and CHU.
Soapbox: First time trying this. Couldn't see the signal at 40M, got usable data at 80m, and found the signal at 160m but didn't manage to collect the data. Great fun, thank you. |
| N3FG | PA | W3 | | | 160m | 80m | 40m | | K5CM | | 3,598,131.19
-0.03 | 7,064,322.25
-0.12 |
| Method: K3, 40M dipole, Spectran
Soapbox: 40M: lots of QRN, 80M:gud signal with some Doppler, 160M: I didn't hear anything. Thanks again to Connie for another fine event. |
| N3IZN | CA | W6 | | | 160m | 80m | 40m | | K5CM | 1,841,988.54
-0.03 | 3,598,131.10
-0.12 | 7,064,322.38
0.01 |
| Method: Kenwood TS-440, VK3HZ XRef, Thunderbolt GPSDO, Dell T5400
Soapbox: 80 gave me some greif, 3598130.92 would be my second choice. |
| N5DM | TX | W5 | | | 160m | 80m | 40m | | K5CM | 1,841,988.80
0.23 | 3,598,132.20
0.98 | 7,064,322.35
-0.02 |
| Method: Yaesu FT-3000 and Digipan v2.0. Dipoles 160/80/40.
Soapbox: Thanks to ARRL and K5CM for FMT. |
| N6RDR | CA | W6 | | | 160m | 80m | 40m | | K5CM | 1,841,988.58
0.01 | 3,598,131.15
-0.07 | 7,064,322.57
0.20 |
| Method: Joe Taylor's (K1JT) Frequency Measuring Tools |
| N6SKM | CA | W6 | | | 160m | 80m | 40m | | K5CM | 1,841,988.56
-0.01 | 3,598,131.25
0.03 | 7,064,322.22
-0.15 |
| Method: FT857D using GPSDO with e-probe antenna, running fldigi in frequency analysis mode on MacMini with SignaLink USB sound card.
Soapbox: Thanks for running this test. It's always fun locating the signal and then trying to determine its exact center. Reception was best on 40m degrading to barely audible/visible on 160m. Frequency shifting was worst on 80m, with swings up to 0.2hz, while 160m seemed rock solid. |
| N7EP | AZ | W7 | | | 160m | 80m | 40m | | K5CM | | 3,598,104.98
-26.24 | |
| Method: Icom IC-706MIIg, 43 foot vertical antenna, Speclab software and lady luck. Which ran out tonight.
Soapbox: Bummer, I could only hear K5CM on 40M. The other two bands were noisy and the signals were non-existent. Normally, even if I can't hear the signals, I see a faint trace on Speclab. |
| N8OB | OH | W8 | | | 160m | 80m | 40m | | K5CM | 1,841,988.46
-0.11 | 3,599,131.27
1,000.05 | |
| Method: Flex 6300 checked against CHU and Speclab
Soapbox: No signal at all on 40M. Good signal on 80M and signal on 160M was in same spot as an S-9 signal from something. Lots of fun as usual. Thanks Connie |
| N8OQ | VA | W4 | | | 160m | 80m | 40m | | K5CM | 1,841,987.98
-0.59 | 3,598,131.25
0.03 | 7,064,322.72
0.35 |
| Method: Elecraft K3 #6534, G3RUH GPSDO, 93m H-loop @ 14m and Spectrum Lab.
Soapbox: Lots of Doppler about. WWV10 not heard but WWVH10 was. BRA10 was the strongest just before test. Experimenting with a more "disciplined" calibration of the K3 this time, mostly on my part! Strong signals on all three bands. |
| N9CYL | WI | W9 | | | 160m | 80m | 40m | | K5CM | 1,841,988.42
-0.15 | 3,598,131.27
0.05 | |
| Method: Icom IC-746PRO warmed up for a week.
Spectrum Lab software.
Soapbox: Nothing heard on 40M. |
| N9XGC | IL | W9 | | | 160m | 80m | 40m | | K5CM | | 3,598,130.00
-1.22 | |
| Method: Computer /Software |
| N9YKE | WI | W9 | | | 160m | 80m | 40m | | K5CM | 1,841,988.55
-0.02 | 3,598,131.22
-0.00 | |
| Method: K3 and sub receiver with long wire and loop antennas used to detect signals.
Two thunderbolt referenced DDS signals injected into receive path about 50 Hz below and above the K3 dial frequency. DDS frequency is set by Visual C program that reads the K3 dial and sets each DDS.
Audio frequencies measured with Spectrum Lab running on two computers with different setting. Results are combined based on measurement StdDev to give result. Used TCP to control Spectrum Lab on both computers.
Soapbox: Did not see the 40 Meter signal, other signals were strong S7-S9. Thanks for the test! I have a lot of fun preparing and measuring. |
| NU0C | NE | W0 | | | 160m | 80m | 40m | | K5CM | | 3,598,131.37
0.15 | |
| Method: Drake R-7A receiver with 80M Dipole, HP/Agilent E4420B signal generator locked to Tracor 305SC rubidium standard as reference signal, delta-f using Spectrum Lab and Baudline. The back end is an Asus K55A laptop running Kubuntu Linux interfaced through a modified Johnson phone patch to the RX.
Soapbox: My first attempt at this. I got home from the radio club meeting just in the nick of time to catch most of the 80 Meter test. Which was good since my timed recording of the 40 Meter test crashed. Results from Baudline and Spectrum Lab were about 300 milliHertz different, but since Baudline is incredibly geeky with a huge learning curve that I haven't even begun to get a handle on I am submitting the numbers from SL and hoping for the best. Thanks for running the test! |
| SV8QG | DX | DX | | | 160m | 80m | 40m | | K5CM | | 3,598,131.08
-0.15 | 7,064,322.27
-0.11 |
| Method: Flex 1500 locked to TRIMBLE NTPX26AB GPS Timing Receiver, Spectran for data acquisition, using CHU for Doppler correction.
Soapbox: Weak but clear signal on 40m, I can’t say the same for 80m, I guess that the measured signal was from K5CM., nill on 160m. CHU weak but doppler quite stable on 7850 (.170 Hz deviation) |
| VE2IQ | ON | VE | | | 160m | 80m | 40m | | K5CM | 1,841,988.60
0.03 | 3,598,131.03
-0.19 | 7,064,322.37
0.00 |
| Method: Active E-probe to TS-850 (500-Hz CW filter). Audio output (near 800 Hz) to pc sound card. Record, then analyze next morning. Method depends on knowing exact relation between RF carrier input (on dial frequency) and audio tone output. Measure audio with FFT, calculate RF value.
Soapbox: Had powerline noise here during FMT, hope I can still get within 1 Hz. Signals: 40M RST 529, 80M RST 599, 160M RST 559-579. K5CM signals here strong enough to overcome the QRM. Thanks Connie for another good one. |
| VE3GSO | ON | VE | | | 160m | 80m | 40m | | K5CM | 1,841,989.36
0.79 | 3,598,131.01
-0.21 | 7,064,322.57
0.20 |
| Method: Checked FT-950 frequency offset using WWV and CHU. Measured audio on USB using SpectumLab, added audio to receive display, subtracted receiver error, submitted result. Fingers now crossed.
Soapbox: Signal on 40m very weak, almost not heard above some phone operation. 80m better, but a few guys in neighborhood on 3600 USB caused some QRM. Signal on 160 about S9 with S8 noise and +40 QRN. |
| VE3MSC | ON | VE | | | 160m | 80m | 40m | | K5CM | 1,841,988.80
0.23 | 3,598,129.40
-1.82 | 7,064,316.82
-5.55 |
| Method: Butternut HF9V vertical antenna, Yaesu FTdx5000MP, Flex 1500 locked to Trimble GPSDO, WSJT FMT tool for FT5k. The actual measurement was done on the Yaesu. The Flex was for sanity checking.
Soapbox: First attempt at an FMT. Severe QRM and very weak signal on 40m made it impossible to have any confidence in the result. 160m had lots of digital and CW operators plus signal fading/static around 1840 making it difficult to find the right frequency. Happy with the 80m result. Thanks for all who made this happen and VE3GSO for inspiring me. |
| VE3XT | ON | VE | | | 160m | 80m | 40m | | K5CM | | 3,597,158.24
-972.98 | 7,063,125.76
-1,196.62 |
| Method: WSPT / KX3
Soapbox: First go at a FMT. Was a lot of fun getting everything set up and TNX to all the folks who made it possible. Bill XT |
| W1KU | MA | W1 | | | 160m | 80m | 40m | | K5CM | 1,841,987.50
-1.07 | 3,598,130.26
-0.96 | 7,064,320.69
-1.68 |
| Method: 550' low horizontal loop. Softrock ensemble RX II. E-MU 0204 USB soundcard sampling @ 48KHz with I/Q inputs saved and post-processed by Spectrum Lab. 64K FFT length with divisor of 2. Si570 calibrated against 10 MHz WWV carrier, soundcard sampling rate calibrated using tones from WWV on analog receiver in AM mode. Frequency error computed from WWV and CHU at 2.5, 3.33, 5, and 7.85 MHz; FMT error estimates interpolated from these observations. FMT values are average of per-second frequency measurements over about 2 minutes of keydown.
Soapbox: Second attempt at FMT. No high-accuracy equipment. Some technical glitches during acquisition that may have impacted my readings and required post-processing the signals instead of measuring them live. Lots of nearby signals on 160m and faint fmt signal. |
| W1UP | MI | W8 | | | 160m | 80m | 40m | | K5CM | 1,837,500.00
-4,488.57 | 3,598,120.00
-11.22 | 7,064,300.00
-22.37 |
| Soapbox: First time attempting to participate. Thank you for your effort! |
| W2AGC | NJ | W2 | | | 160m | 80m | 40m | | K5CM | 1,842,015.30
26.73 | 3,598,132.10
0.88 | 7,069,182.20
4,859.83 |
| Method: IC-718 receiver. Offset tuning, audible beat w/ 1kHz (.wav) tone. Corrected using same method on WWV @ 5 and 10 MHz.
Soapbox: Very high QRN @40m (333), had to switch to other sideband to avoid phone QRM. Never heard call up, very likely wrong carrier, persisted after key up. Beautiful tone at 80m (599). Awful signal at 160m (211), high QRN, but occasionally heard call up. Sequence at 160m ran 1 minute late? |
| W2EMN | NY | W2 | | | 160m | 80m | 40m | | K5CM | 1,841,960.00
-28.57 | 3,598,000.00
-131.22 | |
| Method: Vintage: All original BC-221 with a Hammarlund SP-400 Super Pro receiver. |
| W2FD | PA | W3 | | | 160m | 80m | 40m | | K5CM | 1,841,988.57
0.00 | 3,598,131.18
-0.04 | 7,064,326.61
4.24 |
| Method: TS-450S --Measure receiver audio output frequency for CW and Reverse CW near 600 Hz.from receiver with frequency counter and use data to correct dial reading. Calibration of receiver digital display using CHU 3330 kHz. or WWV 15 MHz..
Soapbox: Coinditions very poor for 40M. propagation and my results are mostly a guess for that band. 80M and 160M were in much better shape. Thanks, Connie for your FMT efforts. |
| W2TX | FL | W4 | | | 160m | 80m | 40m | | K5CM | 1,841,988.57
0.00 | 3,598,131.22
0.00 | 7,064,322.29
-0.08 |
| Method: Used RF-590 rcvr locked to GPSDO. Spectrum Lab SW with soundcard calibrated against local GPS-locked AM carrier.
Soapbox: Signals were 50-100 uV on every band. Ant is a 64 ft vertical matched on each band. |
| W3DAD | MD | W3 | | | 160m | 80m | 40m | | K5CM | 1,841,988.48
-0.09 | 3,598,130.74
-0.48 | |
| Method: OCXO+K3/TCXO and Spectrum Lab
Soapbox: Had trouble with QRM/QRN on 40M. Lots of QRM on 160, but managed to get what I thought was an adequate signal reading. Lots of fun and a good learning experience. Thanks to K5CM and ARRL for the opportunity to participate. |
| W3JW | VA | W4 | | | 160m | 80m | 40m | | K5CM | 1,841,988.57
0.00 | 3,598,131.37
0.15 | 7,064,322.66
0.29 |
| Method: Icom 7800(locked to GPSDO) into Spectrum Lab
Soapbox: 40 M signal was weak at S2; 80 M signal was S9+5 and the 160M signal was S7. Plenty of Doppler and multipath on 40M and 80M but I couldn't hear the "wind modulation"! Many Tnx to Connie and all that make this event possible---73 Jeff |
| W3SA | NC | W4 | | | 160m | 80m | 40m | | K5CM | | 3,598,200.00
68.78 | 7,064,319.10
-3.27 |
| Method: Yeasu FTdx-3000D and Spectrum Lab
Soapbox: 40m signal was in the noise as propagation was fading
80m solid copy
160 not heard |
| W4EDX | NC | W4 | | | 160m | 80m | 40m | | K5CM | | | 7,064,000.00
-322.37 |
| Method: IC-7700, SignaLink USB, HP desktop, Spectrum Software.
Soapbox: Heard K5CM at RST 239. Heavy QRM from what appears to be foreign broadcast on 7065.00. Sorry unable to obtain anything useful. Lower in the CW portion of the band would at least eliminate the QRM but strength would still present a problem.
73's
Bernie/W4EDX |
| W4GRA | FL | W4 | | | 160m | 80m | 40m | | K5CM | 1,841,986.75
-1.82 | 3,592,127.05
-6,004.17 | 7,064,319.77
-2.60 |
| Method: Kenwood TS-2000 with Soundcard software
Soapbox: First attempt |
| W4JLE | SC | W4 | | | 160m | 80m | 40m | | K5CM | 1,841,988.55
-0.02 | 3,598,131.15
-0.07 | 7,064,323.05
0.68 |
| Method: Icom 7100/FLDIGI Controlled by GPS disciplined Oscillator
Soapbox: Good signals on 160 and 80. I saw a signal on the waterfall at the noise level on 40 and hope it was the right one. Thanks for the test. |
| W4WJ | TX | W5 | | | 160m | 80m | 40m | | K5CM | | 3,598,131.50
0.28 | |
| Method: K3 Zero beat with GPS Locked HP3336B... Next year my Racal 6790GM will be back on line. Can't wait!!
Soapbox: 40m sig -120dBm... 80m -85dBm... 160m NIL... TNX Connie!! |
| W5AJ | TX | W5 | | | 160m | 80m | 40m | | K5CM | 1,841,988.75
0.18 | 3,598,131.35
0.13 | 7,064,321.40
-0.97 |
| Method: K3, Spectrum Lab
Soapbox: didn't hear signal on 40 BUT spectrum lab picked up a tone.... see if software heard K5CM or bogus on 40 number. |
| W5LAC | MS | W5 | | | 160m | 80m | 40m | | K5CM | 1,841,989.00
0.43 | 3,598,131.00
-0.22 | |
| Method: Flex 3000. Use LSB mode, placed Roland VT-12 Vocal Tuner near speaker.
Adjust receive frequency to produce 440 Hz tone (A above middle C).
Subtract 440 Hz from receive frequency.
Soapbox: Could not find 40m signal. Thanks again for a fun activity ! |
| W5TV | TX | W5 | | | 160m | 80m | 40m | | K5CM | 1,841,988.35
-0.22 | 3,598,130.88
-0.34 | 7,064,322.00
-0.37 |
| Method: Flex 6500 with fldigi in frequency analysis mode
Soapbox: The 40 meter signal was extremely weak here. Both 80 and 160 were strong. Thanks to K5CM for this FMT. |
| W6BM | CA | W6 | | | 160m | 80m | 40m | | K5CM | | 3,598,131.33
0.11 | 7,064,322.22
-0.15 |
| Method: Thunderbolt => synthesizers LO, BFO => SP-600JX17, match BFO&IF on scope
Soapbox: Good conditions on 75, 40, nothing heard on 160 except a very weak carrier at 1840,002.6 that was not K5CM. |
| W6OQI | CA | W6 | | | 160m | 80m | 40m | | K5CM | 1,841,988.50
-0.07 | 3,598,131.20
-0.02 | 7,064,322.40
0.03 |
| Method: HP 3801B GPS receiver, HP3586 selective level meter, HP 3336B signal generator both of which are locked to the HP GPS receiver HP 3336 feeds horizontal input on X/Y scope. HP3586 output feeds vertical input on scope. HP 3586B tuned until Lissajou pattern on scope stands still, or as still as possible with Doppler shift causing movement.
Soapbox: K5CM 40 meter signal was S6 with not much Doppler shift. The 80 meter signal was S9 but with a fair amount of Doppler shift. The 160 meter signal was VERY weak and as a result I don't have much confidence in my 160 meter measurement. |
| W7CQ | OR | W7 | | | 160m | 80m | 40m | | K5CM | | 3,598,131.35
0.13 | 7,064,322.24
-0.13 |
| Method: ICOM 756 (internal 30mHz reference is locked to GPS controlled Frequency Standard)- Spectrum Lab
Soapbox: Good steady signals on 40 & 80 but absolutely NOTHING on 160. Not even a tiny trace on the Spectrum Lab waterfall. 160 was a dead band in Oregon.
Great Fun and thanks to all for your efforts. Jimmy W7CQ |
| W7KBW | MD | W3 | | | 160m | 80m | 40m | | K5CM | | 3,597,462.98
-668.24 | 7,063,267.18
-1,055.19 |
| Method: IC-703+, dipole antenna, FLDIGI using Freq Analysis mode, RIG Blaster Advantage. Zeroed FLDIGI to WWV @ 10 MHz.
Soapbox: No signal heard on 160m at my location. |
| W7KPZ | OR | W7 | | | 160m | 80m | 40m | | K5CM | | | 7,064,322.42
0.05 |
| Method: IC718 w/ CR038 crystal. Indoor Wire Antenna.
FLDIGI on a Windows 7 PC.
Soapbox: 40M -- Clear signal. In fact, the only one on the band
80M -- A very loud, broadband noise source started 30 seconds before the test and continued through it. I'd never heard or seen (on the waterfall) anything like it. No signal heard.
160M -- Dead. No signal of any kind heard.
The worse conditions for FMT I've seen. Ah, well, next spring. |
| W7PUA | OR | W7 | | | 160m | 80m | 40m | | K5CM | | 3,598,131.18
-0.04 | 7,064,322.28
-0.09 |
| Method: IC-706 MKII locked to 10 MHz reference feeding Spectrum Lab for a waterfall display. The 10 MHz is GPS locked by Shera circuit.
Soapbox: Interesting, as always. The 40-m signal had a good quality spectrum whereas the 80-m signal was spread over many tenths of a Hertz. I tuned, listened and watched the wide-band waterfall, but never saw any indication of a signal on 160-m. |
| W8LJB | MI | W8 | | | 160m | 80m | 40m | | K5CM | | | 7,064,340.00
17.63 |
| Method: Vintage Army Corps BC-221T
Soapbox: Read the QST article and decided to dig-out the BC-221. I'm a novice at this but had fun. 40M was pretty noisy with lots of fading. |
| W8TM | OH | W8 | | | 160m | 80m | 40m | | K5CM | 1,841,989.00
0.43 | 3,598,131.00
-0.22 | 7,064,322.00
-0.37 |
| Method: K3 with KSYN3A calibrated in advance against 10 MHz WWV. Measurement by zero beat in CW mode against K3 "spot" audio tone.
Soapbox: Hope the new synthesizer is as accurate as the old one, which got 27 of 29 measurements within 1 Hz in 2009 Nov, 2010 both, 2011 Apr and 2014 Nov FMTs. Both 10 MHz WWV and 40M K5CM sigs weak at measurement time. |
| W9GR | CA | W6 | | | 160m | 80m | 40m | | K5CM | 1,841,998.61
10.04 | 3,598,131.22
0.00 | 7,064,322.47
0.10 |
| Method: Method: FlexRadio 6500 locked to Trimble Thunderbolt GPS. FlexRadio audio recorded on Denon digital audio recorder right channel. Left channel is a 2 kHz reference tone from a HP3325A signal generator which is also locked to GPS. Reference tone used to correct for sampling rate clock error of Denon recorder. Resulting WAV files are analyzed with custom GNU Octave frequency measurement code which I wrote myself.
Soapbox: Soapbox: My first FMT. Signal was weak on 40 meters but strong on 80 and 160 meters here in California. |
| W9INE | CO | W0 | | | 160m | 80m | 40m | | K5CM | | 3,598,231.31
100.09 | |
| Method: FLEX-6700.
Soapbox: No signal heard on 40 meters and 160 meters.
Signal level on 80 meters -110 dBm with up to 30 dB QSB. |
| W9TJ | IL | W9 | | | 160m | 80m | 40m | | K5CM | 1,841,988.49
-0.08 | | |
| Method: Icom IC-R75 RX and the same old HB junk.
Soapbox: No signal on 40 with 80 extreamly weak and fading in the middle of the QRN from a thunder storm that had departed within the half hour. Now 160 made up for all. Big robust signal with no fading or doppler. |
| W9ZB | IN | W9 | | | 160m | 80m | 40m | | K5CM | 1,841,988.00
-0.57 | 3,598,131.00
-0.22 | |
| Method: IC706MKIIG cal checked with WWV and CHU. CW and CW-R at 600 Hz compared to 600 Hz from DDS function generator. |
| WA1ABI | RI | W1 | | | 160m | 80m | 40m | | K5CM | 1,841,988.58
0.01 | 3,598,131.27
0.05 | 7,064,322.40
0.03 |
| Method: WJ-8718 Receiver locked to Rb standard, beat note measured with DL4YHF's Spectrum Lab software.
Soapbox: Poor band conditions for this FMT, especially 40m. Thanks to K5CM and ARRL for another well run FMT. |
| WA2DVU | NJ | W2 | | | 160m | 80m | 40m | | K5CM | 1,841,988.55
-0.02 | 3,598,131.20
-0.02 | 7,064,322.50
0.13 |
| Method: 3586, 3336,scope,dart board.
Soapbox: 40M S3, 75M S9, 160M in and out of noise and digital sig but could see FMT sig once in a while through the digital signal. |
| WA2ERP | NY | W2 | | | 160m | 80m | 40m | | K5CM | | 3,598,131.88
0.66 | 7,064,322.61
0.24 |
| Method: Yaesu FT-920, HP8640B, HP5335A and Spectrum Lab
Soapbox: 160 signal too weak to copy! |
| WA2USJ | NY | W2 | | | 160m | 80m | 40m | | K5CM | | 3,598,314.43
183.21 | |
| Method: Kenwood TS-570s |
| WA4FJC | VA | W4 | | | 160m | 80m | 40m | | K5CM | 1,840,768.00
-1,220.57 | 3,598,131.00
-0.22 | 7,064,320.10
-2.27 |
| Method: HP 3586B SLM, 80 M dipole, Spectrum Lab as a tuning indicator. Hope not to make any math errors.
Soapbox: Kinda noisy on 40 tonight. Nice 80M -85 Db signal. 160 M noisy tonight. 73 Gordon |
| WA5ONL | TX | W5 | | | 160m | 80m | 40m | | K5CM | | 3,598,029.00
-102.22 | |
| Method: Flex Radio Model 1500
Locked to Arbiter Systems Model 1084C GPS clock/frequency standard.
Soapbox: No copy on 160m or 40m. Conditions on 80m not very good either. I had considered boring some very expensive equipment (Rockwell Collins) but I didn't think was in the "spirit" of things... I'll do better next time. |
| WA7IRW | NV | W7 | | | 160m | 80m | 40m | | K5CM | | 3,598,130.70
-0.52 | 7,064,323.20
0.83 |
| Method: Elecraft KX3 with Spectrum Lab FFT V2.90 s/w plus K1JT's WSPR FMT calibration parameters for the KX3. USB mode with a 300 - 400 Hz offset. Zoomed in on signal, then decimated FFT 4x-6x to get frequency resolution.
Soapbox: Not a hint of a signal on 160m. 40m and 80m had no problems and no other signals to confuse the measurements. |
| WA9VNJ | WI | W9 | | | 160m | 80m | 40m | | K5CM | 1,841,988.57
0.00 | 3,598,131.17
-0.05 | |
| Method: Yaesu FT-857D locked to a Trimble Thunderbolt GPS using an XRef-FT board. Spectrum Lab doing long FFTs in real-time. Trying a simplified approach this time around, with no particular control on the sample rate or other inherent errors.
Soapbox: Signal ok on 160m, fading on 80m, and not heard on 40m. Used a garage attic dipole for 40, and a Pixel Loop (AM-2) antenna for 80 and 160. Fun test -- thanks for hosting. |
| WB0LXZ | KS | W0 | | | 160m | 80m | 40m | | K5CM | 1,841,980.09
-8.48 | 3,598,130.75
-0.47 | |
| Method: 80m dipole, HP3586B, HP3335A
Soapbox: Tnx. Could hear CHU on 7850, and CW and MFSK on 40 but no K5CM signal at all. -bill, WB0LXZ EM27pj |
| WB2AWQ | NV | W7 | | | 160m | 80m | 40m | | K5CM | | 3,598,580.00
448.78 | 7,064,158.00
-164.37 |
| Method: VINTAGE
I used a Navy WW2 LM-18 heterodyne frequency meter, which I've owned and used for about 10 years. It's crystal calibrator is inoperative (bad crystal) and it has no calibration book so I calibrate with a HP 5381A frequency counter (not used in the actual FMT), and generated my own calibration scales covering 3500 to 3600 KHz. Just like using the original manual, determining exact frequency is a combination of accurate presetting (in this case preset frequency is 3500 KHz), careful setting of the meter to match in tone the frequency being measured, and interpolating the resultant scale reading to determine exact frequency within two full KHz increments.
Soapbox: Last time I did an FMT was in the 90s, using a BC-221 Army WW2 meter, very similar to the LM-18. Back then I hit just 48 Hz off the mark. Good fun, and doing it this way instead of just using a freq counter or other high-tech gizmo makes one appreciate the art of it. And for most Amateur work, as long as one acknowledges the potential errors, this level of accuracy is just fine! |
| WB2CMF | NY | W2 | | | 160m | 80m | 40m | | K5CM | 1,841,988.12
-0.45 | 3,598,130.96
-0.26 | 7,064,322.97
0.60 |
| Method: Kenwood TS-2000, Cushcraft R8 Vertical (40 Meters), Inverted Vee Dipole (80,160), Compaq CQ-56 Laptop, Rigblaster PC Interface, Fldigi software in frequency analysis mode.
Soapbox: Conditions were not very good tonight and signal on 160 was in the mud. Still had a lot of fun. |
| WB2HYO | NJ | W2 | | | 160m | 80m | 40m | | K5CM | 1,840,564.00
-1,424.57 | 3,598,131.40
0.18 | 7,064,265.30
-57.07 |
| Method: ICOM IC-7410 and my ears. |
| WB3JFS | NV | W7 | | | 160m | 80m | 40m | | K5CM | 1,841,005.41
-983.16 | 3,597,151.32
-979.90 | |
| Method: TS-2000 transceiver with vertical. FL-Digi software.
Soapbox: Absolutely no copy of the 40 meter transmission here in Las Vegas, NV. 80 meters was the best copy of the remaining transmissions. |
| WB4HIR | NC | W4 | | | 160m | 80m | 40m | | K5CM | 1,841,988.67
0.10 | 3,598,131.04
-0.18 | 7,064,322.29
-0.08 |
| Method: TS-590, Soundcard, K1JT WSPR frequency measuring tools/software
Soapbox: my first time participating in the FMT. Thanks! |
| WB5UAA | TX | W5 | | | 160m | 80m | 40m | | K5CM | 1,841,988.40
-0.17 | 3,598,130.90
-0.32 | 7,064,322.20
-0.17 |
| Method: Icom 756ProII and a Tektronix TDS 1012 O'Scope (last calibration 2004). Measured and plotted best fit line for the error in the radio against WWV over two weeks and then interpolated for the FMT frequencies.
Soapbox: Signal report from East Texas: 40M RST 329, 80M RST 569, 160M RST 579. Antenna: 300 ft dipole up 30 feet. |
| WB6HYD | CA | W6 | | | 160m | 80m | 40m | | K5CM | 1,841,987.40
-1.17 | 3,598,128.77
-2.45 | 7,064,322.05
-0.32 |
| Method: K3 with phaselocked master oscillator, HP3320B frequency synthesizer, Eldorado 1650 counter, HP1740 scope, Spectrum Lab running on Windows 8. Antenna for 160 was pizeo loop. Antenna for 80 and 40 was a multiband dipole.
The audio from the K3 was matched with the synthesizer on the scope and the frequency of the synthesizer was measured with the counter. Spectrum Lab was used to get the synthesizer close. |
| WR5J | WA | W7 | | | 160m | 80m | 40m | | K5CM | | 3,598,131.07
-0.15 | 7,064,322.30
-0.08 |
| Method: Elecraft K3, RigCAT via Navigator Interface, FLDIGI Freq. Analysis Mode
Look for stabilization between swings - thought I saw some and selected those values for the period of key down...
Soapbox: My high noise location (in the big city) was a little nerve wracking...
Don't really know how to interpolate from 40 to 80 and between WWV 5.0MHz and 2.5MHz - there is a 1.5 Hz discrepancy on my rig...
Guess we'll see if I brought myself glory or gory...
Thanks for providing the opportunity! No atomic clocks here... |
| WS8U | MI | W8 | | | 160m | 80m | 40m | | K5CM | | 3,598,130.00
-1.22 | |
| Method: Flex5000 calibrated to wwv, zeroed using spectrum display.
Soapbox: 160m and 40m signal did not propagate to ann arbor, mi (en82). Antenna ~100' non-resonant dipole at ~25 feet. |
| WX4TW | NC | W4 | | | 160m | 80m | 40m | | K5CM | 1,841,988.83
0.26 | 3,598,131.51
0.29 | |
| Method: KX3 (carefully calibrated) and Spectrum Lab Software
Soapbox: No joy on 40M--good signals on 80 and 160 |
