Some Impromptu K5CM FMT results:

December 06, 2012  0900 cst   0300 utc


(The times at the end of the comments are in MST from the GoDaddy server)

Strong sig on 40m, very weak on 80m. Lots of QRN on 80m. Using Agilent
33522A Generator locked to GPS-disciplined Rb reference, AM detection mode,
and FLDigi for the Hz tracking on a 600 Hz heterodyne. Tried to make sure
that I tuned the freq generator below the received
carrier.","12/06/2012","08:24:25 PM" 

Good FMT was able to hear K5CM on all three bands.","12/06/2012","08:36:03

Dec 6 2012: Fair copy on 40 & 80 metersd. Due to severe digital switching
noise from a number of sources (some outside of my property), I was unable
to copy anything on 160 meters.","12/07/2012","04:05:26 AM"

Using a different method this time - GPS-referenced sig generator to create
audio beat note in AM-mode rcvr, and SpectrumLab to measure the audio note
(like some of you). On 40 m, got a bimodal frequency-amplitude scatter
diagram with two peaks in amplitude about 50 mHz apart. ""Something"" told
me to choose the higher one. Sorry, had to quit before the 80 and 160
skeds. As always, thanks Connie. ","12/07/2012","07:41:56 AM"

KM6QX EB 1845163.182, 3565222.936, 7055037.410
A lot less doppler spreading this week. Signal strength was S8, S5, S3 (on

K5CM  FMT Dec,13 2012 (09:00 pm cst)

chart by K7HIL

"N2GL","OR","CN85kp Good stable signal on 40; OK on 80, nil on 160. Thanks, and see you next week","12/13/2012","08:37:53 PM"

Nice winter conditions for Connie's signal. Doppler was not too bad. Due to cockpit error, I do not have great confidence in my 160 measurement. By the time I realized my error I had only about five seconds to make the 160 meter measurement.","12/13/2012","09:04:31 PM"


K5CM Sigs: 160m S9+20, 80m S9+10, 40m S8.","12/13/2012","10:30:25 PM"

Nice signals here in Tucson this evening. Heavy Doppler (+/- 250 mHz) on 75m but it's a no excuse submission :)","12/13/2012","11:44:09 PM"


Weak on 160, others OK. Thanks for the test. Jerry","12/14/2012","08:28:17 AM"

Well, Mr. Murphy came to visit but he had a little too much fun with me and had to leave just before the 160 m sked. I hope I recovered from him in time. :-/ Received good signals for all three skeds. "12/14/2012","08:29:52 AM"

Good signals in east central KS, with 40 M being the lowest level. I did not see a lot of wild doppler. It is apparent from these tests that having a setup with good human factors and a defined procedure or check list can prevent loss of data. So I am going to rework the setup a bit to make it easier to use. Thanks Connie - 73 to all John k6iql","12/14/2012","12:33:56 PM"

Entries for 12/13/2012. Not sure if this is the right place to enter results. Measurments done with HM counter and homebrew counter cotrol and SW. Thanks for being there. 73 Ed WA6RZW","12/14/2012","03:02:31 PM"

I believe 40m and 80m signals here were Doppler shifting upwards. 160m signals were very weak, but I think they had a little downward Doppler shift. There was another 160m signal that appeared briefly, 1.042 Hz lower, but I can't believe it was Connie's true signal and the other peaks had been shifted that far (1.042 Hz) upwards.","12/14/2012","03:34:11 PM"

Transmitting equipment used by K5CM for this FMT:

A HP Z3801 GPS frequency source clocks a HP-3336B. Then to a 10 db transistor amp which drives a 12BY7 / pair 6146.  Each signal was first set to 10 watts out. There are no mixers or any device in the chain of amplifiers that might impact the accuracy of the GPS frequency source.  As a reality check,  I periodically log the frequency source against WWV and other GPS referenced sources.  I monitor each transmission with a completely separate receive system to look for any instability or short term drift. 

I typically see considerably less than 1 mHz difference at 10 Mhz when comparing  two Z3801's or a Z3801 and a Thunderbolt, over a 10 to 10,000 second period. 



160 - Vertical 

 80 - New Sloping dipole. Sloping down from 140'. (favors West, North, East)

 40 - Standard Dipole hanging between two 80 foot towers. (favors East, West)





Dec 21, 2012  (day time FMT)
16:45 UTC  


(The times at the end of each of the comments are in MST, from the GoDaddy server. It shows when you posted your results)

No copy on 160 or 80M, -108dbm on 40, and good copy -99dbm on 20M. All with 75M dipole at 70ft. Thanks for the test.","12/21/2012","10:31:58 AM"

"W4JLE","SC","em94hv","0","3566004.757","7055003.383","14120001.661" I have no clue how you guys get down to the levels you do. I chase signals and try to make sense of the doppler.
I think I imagined the 80 meter signal.","12/21/2012","10:40:33 AM"

NO SIG ON 80, 40 about S1, 20 10/9.  Interesting beat on 20 m - about 1.5 hz sig strenght would vary about 15 db!  Thanks again Connie.","12/21/2012","10:45:16 AM"

80M readable but near noise level.  40M had some doppler but strong signal and 20 had considerable doppler/multipath but strong signal.","12/21/2012","11:25:59 AM"

80M inaudible but easy to see your line on spectrogram, 40M almost inaudible, 20M East was S9+, West was S1-S3. Tnx daytime test. Snowstorm here today.","12/21/2012","11:49:44 AM"

Missed the 80m call up. Booming signal (S9) into Tucson on 40m and both E&W 20m, nothing heard on 160m. Stupid simple measurement using CW mode on IC7600, FLDigi tracking the ~600 Hz sidetone, check Rx calibration before and after using Rb locked Agilent 33522A injecting RF passively at nominal TX frequencies, take out any offset and estimated RX calibration drift from FLDigi measurements.","12/21/2012","12:21:25 PM"

"ku4py","AL","EM62wj","0","0","7055003.256","14120001.612","0","0","0","","12/21/2012","12:52:47 PM"

Faint traces only on 160 and 80. Good sigs on 40 and 20. Thanks Connie. Merry Christmas to all!","12/21/2012","03:08:21 PM"

Nothing seen on 80 m with S8 local noise level (hash from neighbours' appliances), so didn't try 160.  Signals good on 40 and 20m.  Measured 20 m West beam as 46 mHz higher than East beam.  And my sig generator (Fluke 6010A) only goes to 11 MHz so had to use (weak) second harmonic on 20 m, of course doubling my reference error there.  Thanks for this pre-Christmas present, Connie!  Merry Christmas to you and all my fellow FMTers.  ","12/21/2012","03:25:29 PM"

Could not copy the 160 or 80 M sigs here in SC. 40 was OK, though, and 20 was very good. Jerry W4UK","12/21/2012","04:30:21 PM"

Nothing on 160. Deluded into believing there was a signal on 80, but also thought the face of the Deity appeared in the waterfall. Copied the callup on 40, QRK5 on 20, but what a messy spectrum. Then needed a nap. Tnx Connie.","12/21/2012","04:47:56 PM"

"K5CM  20m is 20m East W6OQI 20m is 20m West","12/21/2012","08:28:10 PM"

"K9KK" "OK", "EM15", 1845007.375, 3566002.700, 7055003.628, E 14120001.434,  W-14120001.526

December 27, 2012

10:00PM CST  0400 utc

(The times at the end of each of the comments are in MST, from the GoDaddy server. It shows when you posted your results)

Nothing heard on 160, but good clean signals on 40 and 80. I had thought 160 would be better latee in the evening. Thanks, Connie, for the tests.","12/27/2012","09:28:18 PM"

K5CM sigs: 40m/S8+QRN, 80m/S9+10, 160m/S8 ","12/27/2012","09:44:42 PM"

Good signals on 40 and 80 slow deep QSB on 160. This time I am using a Flex 1500 calibrated as best I could. Awaiting delivery GPSDO. Some day we will make the green :>)Thanks for all you do on the FMT's 73 Fred W4JLE","12/27/2012","09:47:03 PM"

Good Sigs, no qrm, not much doppler shift tonigt.","12/27/2012","09:47:22 PM"

K5CM had a good signal on all three bands unfortunately I messed up and managed to delete my 40M readings.","12/27/2012","09:59:57 PM"

I miss my real radio! In the process of repairing my IC7800 PSU (it is pretty scary), so using my Kenwood TS570D without a reference! It drifts faster than a kayak in a whirlpool! Nice signals with a lot of QSB - from S1 to S9 +5. Thanks Connie it was a blast without much equipment","12/27/2012","10:02:09 PM"

No joy on 160","12/28/2012","01:22:32 AM"

160 and 40 M signals were very weak into Seattle.  80 M about an S2.  I used 2.5 MHz WWV as my standard, a IC-746 xcvr and Spec. Lab software for my educated guesses.  Thanks Connie, the FMT's are a lot of fun.  Home in Seattle for Christmas.  Happy New Year to all. Earl ","12/28/2012","01:22:33 AM"

HP SLM, 80 M dipole, SL for tuning aid.  TNX Connie","12/28/2012","06:10:20 AM"

7055012.851","Good signals all three runs, with rapid qsb. Using Flex-1500, HP-3336B, GPSDO to both, SpectumLab, WIN 7. Thanks again Connie. Always fun.","12/28/2012","08:15:22 AM"

Good signals all around but deep QSB on 160.  I just ""eyeballed"" a couple of results from my graphs instead of doing any self-deceiving stats.  We'll see ...  Thanks for doing these tests, Connie, and I hope Santa was good to you.  ","12/28/2012","08:30:35 AM"

12/28/2012","09:36:30 AM"

Thanks Connie.  Lots of fun....","12/28/2012","09:41:39 AM"

Good signals into N.CA: S5, S9, S3. This time used a combination of Fldigi single frequency trends, and SpecLab visual and selected peak interpolation tool. John Stuart, KM6QX","12/28/2012","10:35:47 AM"

Thanks for another evening of FMT adventures. All signals very good into Eastern KS. Due to local idiocy 80 and 40 M results questionable. We will see just how low an AF level SL can use and still give good accuracy!! 160 M test went off normally. Receiving ants dipole and vertical.for this test. AM beat method. 75A4 and Drake R8D receivers with home brew DDS synthesizer and T-bolt for RF Reference.   -73 john k6iql","12/28/2012","12:05:05 PM"

I saw a lot of drift this time and couldn't tell where the real signals were, but I am reporting my best guesses anyway. Had to recalculate the 40 and 80 runs - need a new pencil, I guess. Thanks again for the run. Used GPSDO, Flex5000a and WSPR.  Jerry W4UK","12/29/2012","08:39:42 AM"


Connie, K5CM



January 3, 2013

Looks like John KM6QX takes the honors this week!!!
Most of the 160 meter readings were very close.



"N2GL","OR","cn85kp","0","3599976.983","7055052.781","0","0","0","0","Nothing dicernable on 160m. Good copy 80 and 40. I'll have to extend my 75m dipole. Keep 'm comming Connie. Thanks.","01/03/2013","09:27:27 PM"

"W6OQI","LAX","DM04vf","1845122.385","3599977.055","7055052.711","0","0","0","0","Connie's 40 meter signal weak at about S3.  80 meters was better at S8.  160 meter signal was S4.  But glad I could measure all three signals tonight.","01/03/2013","09:38:48 PM"

"N5DM","STX","EL29fs","1845122.225","3599977.050","7055052.600","0","0","0","0","TS-480S/DigiPan v2.0 : Radio Only Measurements.","01/03/2013","09:42:45 PM"

"AB4RS","VA","FM18hw","1845122.388","3599977.210","7055052.982","0","0","0","0","Decided late to do this, so radio was not warmed up, and drifted significantly during the 40m test. Good signals all around. Same tried and true delta reference method, using a HP3336C locked to a Trimble Thunderbolt to generate the reference, tuned using Yaesu FT-897d, and analyzed using SpectrumLab. 80m signal had obvious multiple paths, components separated by about 250 mHz.","01/03/2013","09:47:33 PM"

"K6BZZ","AZ","DM33xb","1845122.381","3599977.162","7055052.784","0","0","0","0","Good signals all 3 bands. Slow qsb. Condx same as last Thursday. Thanks Connie. ","01/03/2013","10:08:26 PM"

"K7HIL","AZ","DM42ph","1845122.384","3599976.808","7055052.807","0","0","0","0","Signal on 160 totally faded, had to go to recording and enhance / filter the original just to see on Spectrum Labs. Kept me entertained as always. Thanks Connie.  ","01/03/2013","11:42:13 PM"

"VE3OAT","ON","FN25eg","1845122.380","3599977.284","7055052.893","0","0","0","0","Pretty good signals but my data for 40 and 80 m were not ""well behaved"" so I ignored the outliers and calculated averages.  On 160 m the amplitude-frequency scatter was much better behaved (by comparison only!) so I have submitted an eyeball estimate for the actual frequency.  My GPS-DO has been running for over two weeks now and seems well settled.  Now I just hope my arithmetic is all OK.  Thanks again, Connie.  ","01/04/2013","08:59:54 AM"

"KM6QX","EB","CM87","1845122.385","3599977.237","7055052.767","0","0","0","0","Least Doppler ever!  These late-night FMTs appear to be easier for us here on the west coast. These weekly practice trials are really helping us work out our data reduction processes.  Thank You Connie. John KM6QX","01/04/2013","09:35:33 AM"

"K9KK","OK","EM15","1845122.382","3599977.389","7055052.744","0","0","0","0","Thanks Connie.  Enjoyed it","01/04/2013","10:29:36 AM"

"W4UK","SC","EM93an","1845122.378","3599977.199","7055052.712","0","0","0","0","I saw lots of drift on the 40 and 80 sigs. Drift followed a sinusoid with a period of maybe 2.5 minutes, about 200 mHz peak to peak on 40, less on 80. Hopefully they averaged out OK for me. Thanks for the test, Connie.  Jerry W4UK","01/04/2013","11:37:44 AM"

"WA6RZW","CO","DM79","1845122.937","3599977.112","0","0","0","0","0","Someday I will figure out how to receive all the transmissions on the same day.  No squiggly lines were used.  Thank you for hosting the frequency run.  73  Ed WA6RZW","01/04/2013","02:52:47 PM"

"K6IQL","KS","EM28NQ","1845122.379","3599977.187","7055052.561","0","0","0","0","A good test. No cockpit errors for once. Very good signals on 80 and 160, but in the noise on 40M. My various fancy processing ideas produced results not a lot different than simple averages. So we shall see. I can say the the frequent tests do sharpen one's skill and you do seem to learn a bit more each time. Thanks Connie.
73 to all - john k6iql","01/04/2013","03:07:47 PM"

"WB6BNQ","SDG","DM12","0","3599977.222","7055052.770","0","0","0","0","No joy on 160 meters","01/04/2013","05:49:06 PM"


January 10 2013 FMT

I had to move up 1KHz to avoid qrm on 7055, so some missed me there.

Take a look at W3JW's readings using "radio only", all better than 50 millihertz! Great write up also Jeff. K2CM had some good "radio only" readings also.

73, Connie, K5CM


SL<.Gen, and scope. Heard cw callup on 160 but could not find the carrier in the 20Hz filter among the local birdies. Thanks as always Connie.","01/10/2013","08:35:37 PM"

HP 3586A SLM, 80 M dipole w SL for tuning.  Nice signals but qrm on 40M.  TNX Connie  73 Gordon","01/10/2013","08:37:28 PM"

Flex F5K.  Setup a filter to +/- 40hz, DSB mode, put the display to panascope and adjusted the frequency to get as close as possible to a straight line.  For 160M got the same gradual sine  wave on both 1845163 and 1845162, so figured that the actual frequency was in between the two, so interpolated to a .5 hz.  SSB interference on 160M and 80M; but, the  Flex took it out  without a problem. ","01/10/2013","08:37:52 PM"

First FMT.  Using Elecraft K3 with Joe Taylor's FMT tools run from batch files.  I could not hear 7055 and 1845 was just above the noise floor.  Thanks Connie.","01/10/2013","08:47:47 PM"

Nothing heard on 40. 80M was good, 160 fair with some fading,lots of noise. TS-440S with jt software. 440 calibrated against HP-3325A locked to GPSDO. TNX connie for a good  fmt.","01/10/2013","08:54:32 PM"

Weakest signals that I can remember. 40m was only a few dB above the local noise floor but SpecLab did find a consistent peak; hope it was K5CM's. Used Flex-1500 and Spec  Lab.","01/10/2013","09:06:47 PM"

Flex 1500. Conditions fairly unstable with noticeable ionospheric perturbations. Something was going on up there. Thanks again for the test Connie.

No copy for the 40M run. I suspect I may have switched in the wrong 40 antenna. Having these weekly runs is helping me standardize my procedures. Thanks again for the tests, Connie.  Jerry  W4UK","01/11/2013","10:20:46 AM"

Rotten conditions.  Heavy QRN & QSB & weak signals.  NEVER heard the 40M signal.  Thanks for the FMT.","01/11/2013","10:36:26 AM"

Just used the 7600 - tuned for what I thought was zero beat, then tuned 50 hz or so on either side of zero beat until I thought tones were equal and then added half of that to the lower fx.   ","01/11/2013","12:19:47 PM"

NOTHING HEARD ON 40 M, 80 AND 160 M GOOD SIGNALS. THANKS CONNIE - K6IQL","01/11/2013","12:26:11 PM"

For the radio only FMT, I used both receivers within the IC-7800. All oscillators, for both receivers, are phase locked to the 10 MHz internal reference. Since this reference is an OCXO, I  choose to do my basic system calibration in the middle of the daylight hours on the day of the FMT when doppler spread, shift and multipath effects are minimal. I use the lowest useable  frequency transmission of both WWV and CHU. You could make a case for performing the calibration just before/after the test over a path ""similar"" to the actual test path, as an attempt to  mitigate doppler shift errors. I enable the internal calibrator and set the sub receiver to produce a 900 Hz audio output tone. The operating mode of this receiver can be CW, USB or LSB.  The choice of 900 Hz is my personal preference, but is selectable by the operator. In my case 900 Hz works well for my ears when comparing two tones. It is also the highest CW pitch tone  (phase locked to the reference oscillator) that can be selected in the CW mode. The main receiver is set to operate in the CW mode with the CW pitch set to 900 Hz.The main receiver is  operated with frequency step size equal 1 Hz selected. I operate the main receiver BW at 1.2 KHz when initially acquiring the test signal then reduce the BW to 250 Hz for measurement. Tune  the main receiver dial so that you hear the lowest beat frequency between the audio out tones of the two receivers. I use a set of headphones with main receiver to the left phone and sub  receiver to right phone. You can use one (or two) speakers also but the beat seems (to my ears) to be more pronounced with headphones. The main receiver dial frequency (plus or minus the  fraction determined by the beats) is the frequency of the test signal (no doppler or multipath correction). Be sure to save this frequency to a receiver memory or write it down (or both!).  Count the number of beats between the two audio tones at the dial frequency determined above. I recommend counting the number of beats in a 10 second interval; then each beat represents a  0.1 Hz frequency increment. Then move the main dial frequency 1 Hz higher in freq and record the beats in 10 sec. Repeat for two Hz above the ""best"" dial frequency. Then move to 1 Hz  below the ""best"" dial frequency and record the beats in 10 seconds. Repeat for dial set 2 Hz below the ""best"" frequency. You now have enough  information to determine whether the actual  freq is above or below the main receiver dial indication and the beat values tell you by how much (to the nearest 0.1 Hz) plus some redundant ""check data"". Keep in mind that the more  beats per ten seconds that you hear, the further away (either up or down) you are from the actual frequency. If the test signal is available for longer periods of time, you could count  beats over longer periods (anybody for 100 sec?) for improved precision.","01/11/2013","01:59:28 PM"


January 17, 2013 FMT

Couple of close readings on 160, but that's about it this run.
VE3OAT would have made the green line with his radio only readings.

SLM,Synthesizer, scope tirggered on gen, ~1850 beat tuned to gen. Thanks as always Connie. Nothing but birdies in white noise on 160 here.","01/17/2013","08:28:35 PM"

Thunderbolt Reference to HP 3586B SLM with Spec Lab for a rough tuning indicator.  Still have a carrier on 40 M to work around TNX Connie 73 Gordon ","01/17/2013","08:29:15 PM"

Radio Only - Yaesu FT-990 (bought 1994) with 10 Hz tuning steps, ""spotting"" tone calibrated by ear against CHU and WWV.  Doubt I did very well but it was fun doing it!  Hard to get a good  reading on 160 m signal due to local (VE2) sideband QSO.  Thanks, Connie.  ","01/17/2013","08:44:46 PM"

Good S7 signals on 40m and 80m but with deep fades. 160m was weak -110dBm with fades into noise level. Doppler up-down fluctuations were very hard to interpret on 40m and 80m. 160m doppler  spread revealed only one strong peak, briefly. John Stuart, KM6QX","01/17/2013","08:53:11 PM"

Flex-1500, GPSDO, HP-3336, SpectrumLab, Excel, Mk 1 Mod 0 eyeball truth seekers. Unsettled conditions. Good sigs with qsb. Conditions are changing from last 2 weeks. Thanks again Connie.  ","01/18/2013","08:05:30 AM"


Good signals into east KS with 40 M being the weakest as usual. 80 & 160  were 5-9+ and then some. Like last week no large doppler trend on any band but second to second variations of 0.1  Hz or more. Usual setup multiple analog receivers and polarization diversity, SL, Tbolt, home brew DDS synthesizer RF reference, etc. Thanks Connie -john k6iql","01/18/2013","12:28:26 PM"
Connie, K5CM


January 23, 2013

Looks like a few readings 10mhz or better.

I use radio, frequency counter, signal generator, and other stuff.  No SL. Thanks for taking the time to put the signals on the air.  73 Ed","01/23/2013","08:25:35 PM"

Using an Icom 756pro this time with Argo software. Good signals on all bands. Hoping I got a bit closer this time. one below the green zone is like kissing your sister Hi Hi","01/23/2013","08:33:20 PM"

Connie's signal was S3-4 on 40, S10/9 on 80, and S8 on 160. TNX Connie for another good FMT. Using a Harris RF-350K and a 80M dipole orientated for max signal North/South.","01/23/2013","08:46:18 PM"

Nothing on 40... rapid fire technique... testing new stuff.
Thanks Connie.. finally got one in.","01/23/2013","09:05:04 PM"

Good sigs on 40. 80 was OK, but 160 was weak. Used TBolt-stabilized Flex 5000 and WSPR software. Thanks for the test. Jerry W4UK","01/23/2013","10:11:50 PM"

Kenwood TS-480S (Non-disciplined). 40m signals S3/QSB. ","01/23/2013","10:19:51 PM"

Thunderbolt, HP 3586B SLM, 80 M dipole ant.  Still have a strong steady carrier near 7055.  TNX Connie","01/24/2013","06:36:15 AM"

Nothing heard on 160. Thanks for the test Connie.","01/24/2013","07:30:48 AM"

Equipment/Method:  ICOM 706MKIIG connected to Dell Inspiron 531 thru SignaLink USB; 80-meter doublet antenna up about 30 feet; equipment turned on about 4 hours before test and room temperature regulated (sort of) with milkhouse heater in shack; display was calibrated using WWV about 15 min before test.  Signals zero-beat and analyzed with Spectrum Lab.  Had moderate fading and QRM on 80 meters, strong fading and QRM on 160 meters.  Still learning how to use SL.  I learn more with every test and greatly appreciate these weekly opportunities, even though I do not always report my results (I have no where near the level of ability or capability of the regularly reporting stations).","01/24/2013","07:35:48 AM"

40m & 80m were S7 -85dBm into N.CA.  160m was -113 to -108 dBm with noise floor at -115. 40 had two peaks, I guessed higher pk. 80m had small upward Doppler shift. 160m had one strong peak. These frequent tests are providing lots of data for my fuzzy logic neural analyzer. So hopefully I'm guessing smarter.  John Stuart, KM6QX","01/24/2013","08:54:08 AM"

Good Signals & not much QRM. 40 M weakest as usual using 40 M dipole that is oriented pretty much with OK in the null. Gonna have to put up Horiz antenna just for Connie. Still fooling with sorting on polarization. 2 Analog receivers, SL, HB DDS synthesizer, T bolt and AF beat method using SL. Thanks Connie - good fun and I might be learning stuff. 73 john k6iql","01/24/2013","12:12:58 PM"

Good signals except 160 m where there was booming intermittent QRM from local SSB roundtable (VE2s) on 1847.0 LSB.  ","01/24/2013","02:05:37 PM"

73, Connie, K5CM


January 31, 2013  0430utc

Good to see some new guys in this weeks report.

Looks like John, KM6QX hit the nail on the head on 160 meters.

No report for 40m. Thank you for running the test.  I am learning a lot about the challenges of FMT.  73  Ed  WA6RZW","01/31/2013","09:54:33 PM"

Warmed up, GPS locked Signal Level Meter and Spectrum Lab. Averaged Spectrum Lab readings compared to readings of WWV 5MHz. Thanks Connie for making it dark on the west coast!","01/31/2013","10:01:25 PM"

Trying a whole new setup. A Harris 5022 R/T which I am still trying to calibrate, SignaLink and Argo Software.
I have had enough fun for today and am going to bed.","01/31/2013","10:01:54 PM"

Kenwood TS-480S (Non-Disciplined) / 40m S3 Severe Doppler / 80m S9+10 Moderate Doppler / 160m S9 Solid Copy.","01/31/2013","10:17:58 PM"

My first try.  Probably shows.  Hi, hi.","02/01/2013","12:09:09 AM"

Lots of deep signal strength fading, but very little Doppler shifting. This time I recorded with Audacity, then exporting in very compact ogg format. Bench testing had shown no error induced by ogg format vs. SpecLab wave recordings.  Flex-1500, GPSDO, and SpecLab. John Stuart, KM6QX ","02/01/2013","09:32:45 AM"

Used my TBolt-stabilized Flex 5000 and WSPR. Thanks for the test. Jerry W4UK","02/01/2013","09:58:35 AM"

FT450 USB/CW, noted SL frequency, then reproduced it with HP  E8285A RF generator while using the same FT450 settings.  I have not had time to fully check or correct the HP, so am just reporting to the Hz.  --40 M not heard -- Hope I am somewhere near!  I do have lots to learn!","02/01/2013","11:08:35 AM"

Thanks Connie for another fun exercise. My idiot errors seem to be decreasing with practice. A check list helps - after cold soaking in the basement and after warm up the crystal in the SL computer came up showing 500.4 Hz with a 500 Hz tone. First time the sample rate calibration has changed in months. 40 M weak as usual, 80 loud, and 160 S9 and then some. Still playing witholarization diversity. -73 john k6iql","02/01/2013","11:48:57 AM"

40 meters was very weak here; had trouble zero-beating the signal but took what I could get.  Had strong fading on 80 meters, but generally good signals on both 80 and 160.  For some presently unknown reason, my pre- and post-test wwv calibrations differed considerably and this calibration has the greatest effect on my results.  I flipped a coin and chose the value most like the past.  Again, great fun and, hopefully, my operator errors are decreasing with practice.","02/01/2013","12:51:03 PM"


Connie, K5CM

Valentine FMT 0300 utc


new analysis method... could not see or hear 40m but the python code came up with an answer.. 80 and 160 strong.. exciting.. thanks Connie","02/14/2013","08:45:52 PM"

40m and 80m was S9, typical here in N Calif. 160m again very weak, S2 or S3, but 5+dB above noise. Doppler provided several likely peaks on all three runs, so nothing obvious on 160m this time. Re selecting peaks, I just kept changing my mind until I got tired. These weekly tests are really great! Than you Connie, and thank Pam for getting you home early. ;) John Stuart, KM6QX","02/14/2013","09:39:18 PM"

Once again, propagation seemed fairly well-behaved. I just hope my arithmetic is similar. Thanks again for these tests, Connie, especially on such a non-geek evening. ","02/15/2013","11:52:02 AM"

Tbolt-stabilized Flex 5000a and WSPR software again. Thanks for the test. Jerry W4UK","02/15/2013","06:13:04 PM"

Great signals on 160 and 80. and better than usual on 40 M. Used H &V polarization and sorting to throw out most of the data. Tried small magnetic loops on 80 M to see if omni azimuth pattern useful. Audio beat method using my DDS synthesizer and Tbolt for reference. See article coming out in March April QEX for info. Thanks Connie -73 john K6IQL","02/15/2013","08:28:12 PM"

Feburary 28, 2013  0300 utc

"WA6RZW","CO","DM70","1845063.99","3599999.76" I used an Apple iPad this time. Someday I hope to be able to copy the 40M signal. Thanks for the run. 73 Ed","02/28/2013","08:55:00 PM"

"K6APW/7","OR","CN93eq","1845064.28","3599084.0","7055123.41" Very strong on 40M, very good on 80M and OK on 160M. Corrected my slope correction factor with 3.6MHz reading. Thanks for the event.","02/28/2013","10:13:44 PM"

"AB2WB","WNY","FN12sk","1845063.798","3599082.992","7055123.174" Signals were clear and moderately strong on all three bands at this location. I got home late, so the rig was just settling down well towards the end of the test. Set up was as usual-ICOM 706MKIIG interfaced with computer using SignaLink USB; zero-beat the signal and collected the data with Spectrum Lab. Rig display frequency was calibrated against WWV (2.5, 5, and 10 MHz) immediately after the test and all data processed in an Excel spreadsheet. It will be a check of how quickly I can set things up and take readings without big blunders. Another great test. Thank you.","03/01/2013","07:31:00 AM"

"VE3OAT","ON","FN25eg","1845063.831","3599083.457","7055123.480" Wow! Isn't the ionosphere exciting! Kp = 5 this morning, should have checked last night. Observed +300 mHz drift on 40 m so took the stable part near the end, hoping it was OK. Sigs on 80 and 160 m were fairly stable. Thanks again for these tests, Connie. You and Dr. Doppler keep our minds alive. ","03/01/2013","08:18:41 AM"

"W9ZB","IN","EM69xp","1845063.869","3599083.531","7055123.863" Good signals here on all 3 bands. First time for me trying the two-signal measurement. I need a better technique for that next time. Thanks Connie.","03/01/2013","08:38:53 AM"

"K7TT","WWA","CN87wp","1845072.672","3598166.804","7055123.439" Just got PC back on line hours before test. Warmed up? Maybe... Signals on 80M were odd, low signal quite weak ( maybe wrong signal I copied ) ... high signal (3600khz) very strong. 160M signal barely heard if it was the right one at all! Need a better 160M antenna. Thanks for test. Jim","03/01/2013","11:24:19 AM"

"AF9A","IN","EM69wv","1845063.909","3599083.533","7055123.690" 03/01/2013","11:31:39 AM"

"W4UK","SC","EM93an","1845063.825","3599083.456","7055123.681" Flex5000, WSPR. I think it would be useful to have maybe 48 hours to get our data in. Jerry W4UK","03/01/2013","11:39:27 AM"

"KM6QX","EB","CM87","1845063.862","3599083.449","7055122.990" What a strange Doppler night. 40m had two groups of signals. 80M was my first 2-tone FMT; 'correction' was +0.215Hz. 160m was multiple-choice this week. It was one of those ""did either really well or really bad"" nights. At 0400UTC wife and I were in local theater seats to see The Farnsworth Invention. Great play for RF geeks!","03/01/2013","05:07:31 PM"

John, did you consider using the 80 meter correction (.215 x 2) on 40. Be interesting to see how often it might work in future test. I know from WWV 5 and 10, that the Doppler does not necessary correlate.


Connie, K5CM


March 7, 2013  0300 utc


"N2GL","OR","cn85kp","0","3598052.728","7055966.951" Good signals with no qrm within 200Hz. Traditional meathod. Measured both 80M signals but didn't write down the SLM dial frequency. Thanks for the test Connie.","03/07/2013","08:45:03 PM" (MST)

"K7TT","WWA","CN87wp","0","3598052.944","7055967.037" QRM on 3.6Mhz made signal difficult. Used it anyway... Lots of signal frequency variation, but strong signals otherwise. Thanks again. Jim","03/07/2013","09:09:38 PM"

"K9KK","OK","EM15","0","3598052.917","7055967.370" Thanks Connie.... Great fun.  We had an interesting time analyzing the data.  ","03/07/2013","09:49:34 PM"

"WA4FJC","VA","FM08","0","3598052.0","7055612.1" 80 m dipole, Thunderbolt and HP 3586B SLM.  Nice signals.  Have not figured out how to use the 2 signals yet.  73 & tnx Connie","03/08/2013","05:29:04 AM"

"AF9A","IN","EM69wv","0","3598052.886" 40M signal was in the noise, good signals on 80.  Thanks!","03/08/2013","08:10:55 AM"

"K6BZZ","AZ","DM33xb","0","3599051.870","7055967.500" 80 meter delta= 948.130 Hz. Good signals. QRM right in middle of 80 meter tones Trying different techniques here. Thanks Connie. ","03/08/2013","08:51:12 AM"

"KM6QX","EB","CM87","0","3598052.974","7055967.742" 03/08/2013","08:54:30 AM"

"AB2WB","WNY","FN12sk","0","3598052.970","7055967.587" Signals were strong and steady here on both bands.  Equipment and procedures used were as in previous tests.  I muffed the dual signal recording, so my values are both based on calibration of the rig against WWV.  Thanks, again, Connie.","03/08/2013","09:42:01 AM"

"W4UK","SC","EM93an","0","3598052.879","7055965.447" Flex 5000 and WSPR FMT tools. Had much more variability in the 2-tone run than last week. Thanks for the test. Jerry W4UK","03/08/2013","09:49:34 AM"

"K6IQL","KS","EM28NQ","0","3598053.013","7055967.461" 80M Entry is uncorrected for reference. Measured 3600 @ 0.089 Hz high. Corrected result using different process would have been 3,598,053.131 with simple averages + correction. Connie thanks for this series of tests. - john k6iql","03/08/2013","10:44:44 AM"

"VE3OAT","ON","FN25eg","0","3598052.900","7055967.580" Usual sig generator locked to GPSDO and measuring audio beat note in AM rcvr by using SpectrumLab.  This time didn't use the reference signal on 80 m.  On 40 m there were two consistent signals separated by about 200 mHz - chose the higher freq one.  Thanks again, Connie.  I hope you have as much fun setting your dials as I have figuring out where you set them!  ","03/08/2013","06:01:36 PM"



Connie, K5CM

March 21, 2013  0200 utc



I use an automatic computer based system to measure frequency.  Linux OS, all custom code.  Measurements take about 35-40 seconds.  Thanks for the run, I was finally able to copy the 40m signal.  73,  Ed  WA6RZW","03/21/2013","07:20:29 PM"

Thanks for the run Connie. SLM and SL and a little Oregon Windage ( you get auto-windage on EBAY ). Then a typo comma for the decimal.","03/21/2013","07:38:27 PM"

Signals were good, and there was no QRM.  I used an IC-706 with the audio going to Spectrum Lab.  The 706 used a
N6GN 30MHz phase lock, that seems to do well.  This is part of the testing!  I did not use the 3600 compare. Thanks much for the signals.  73, Bob","03/21/2013","08:26:49 PM"

Forty meter signal strong with some QSB. Eighty meter signal about one S unit over noise -- half-hour before sunset here.","03/21/2013","10:08:34 PM"

40M sig was strong.  80M sigs strong with deep fades.  My setup time was short, so my numbers are not my best.","03/22/2013","03:13:28 AM"

Good signals this week, both bands 30 - 40 dB above the noise and I have a pretty high noise level.  Thanks!","03/22/2013","07:06:46 AM"

Signals:  80M VG and 40M just above noise with other signal nearly on same freq.    Equipment: Flex-1500 with Rubidium ref. into SpecLab.   Thanks Connie !","03/22/2013","07:47:00 AM"

TBolt reference, HP 3586B SLM, Spec Lab.  Nice 40 M signal.  Tnx Connie","03/22/2013","08:50:02 AM"

Flex 5000a, gps, HP3336 as ref. Used the known signal on 80 with the delta to estimate unknown. Checked answer by Delta References with HP3336. Finally got the PSDR record to work and it ""save the day"" as my export filters were wrong. Thanks for the test, Connie. Jerry","03/22/2013","08:51:03 AM"

40M (500-Hz CW filter) showed 2 main peaks - wind seemed to blow from the left (unusual) so I chose the lower-frequency one. 80M (2700 Hz LSB filter) - used the known ref freq to decide which peak in cluster, then chose same relative peak at lower unknown freq, took difference.  Thanks Connie.","03/22/2013","10:01:00 AM"

Strangest FMT ever !!!  Strong QRM very close to 40M FMT FREQ.  80M signal FREQ appeared steady for a minute then linearly drifted up over 200 Hertz.  GO FIGURE.  80M REF and FMT signal strength varied from each other by as much as 40DB.  GO FIGURE.  I still have a headache.  GO FIGURE.  Can't wait til the next time.  SMILE !!!","03/22/2013","10:32:46 AM"
"KM6QX","EB","CM87","0","3598044.407","7055131.773","0","0","0","0","Thanks for the tests Connie.  I always learn something new, i.e. new ways to be wrong. I was looking at the 80m two-tones on a real-time spectrum (wide bw bins) and was suprised how independently they bounced up and down in amplitude. So I submitted my best single measurement guess for 80m.","03/22/2013","11:27:01 AM"

Recorded 80 M with Perseus - K9AY loop - Sig s8 with noise, no QRM. Both carriers were changing about 10 db at times but no difference in changes.  Lower fx was about 5 db lower in strength. Played back in AM mode and measured resulting tone with SL - took logging average and got diff of 1,961.795 Khz - subtracted that from 3600 KHZ.  Measured with 3586 and 3336 and got 3,598,044.032 with minimum doppler.  40M sig was 10 - 20/9 minimum doppler and no qrm. Thanks Connie.","03/22/2013","11:59:35 AM"

Good signals with some fading on both bands. I did not use the
reference frequency in spite of good intentions. One PC went off
to software nirvana at 3 minutes to starting time. So we were a bit busy for a while. Two channels with Horiz and Vertical Small Loops and audio beat method using my DDS as RF ref and Tbolt.
Thanks Connie   -73 john k6iql","03/22/2013","02:03:37 PM"

Good, strong signals on both bands.  Used Spec Lab on 4om, with 7850 as reference.  Used K2JT's FMT for 80m.  Calibrated on 3330 and 3600 carrier.","03/22/2013","03:20:46 PM"

I heard what sounded like 6-7Hz amplitude modulation on the 40 M sigs during the first half of the run - must have been a nearby station QRMming K5CM. He said QRL QRL QRL QRL??? QRL QRL??. Strange that I don't see any effect of that on my raw data - maybe it averaged out in my 3-second samples. Thanks for the test. Hope I didn't make more stupid transposition mistakes this time. Jerry W4UK","03/22/2013","03:36:17 PM"

Sorry for lack of comments, submitting at last minute.","03/22/2013","07:02:48 PM"


Chart by KM6QX

March 28, 2013   0230 utc


Automatic frequency measurements with custom software. Thank you for the signals.  73 Ed  WA6RZW","03/28/2013","07:49:37 PM"

03/28/2013","07:58:12 PM"

Good fun Connie. Thanks for test. Spotted 3600kHz reference right on. Visitor in shack so I won't tell if you won't.","03/28/2013","08:06:45 PM"

Both 80 and 40 signals were S9.  There was a lot of Doppler shift on 40 meters.  I used the AM detection method on the two 80 meter signals.  I was surprised to see frequency shift of the audio tone of about +- .3 Hz.  I measured the audio tone at 1097.4.  Subtracting this from 3600 KHz gave the reported frequency of 3598902.6 Hz.  The audio tone was measured with a HP3586B selective level meter using a 20 Hz filter.","03/28/2013","08:20:35 PM"

Used 706MKII with N6GN 30 MHz PLL along with Spec Lab.  Thanks for the 80-m QSY; the QRM was loud. The propagation is always interesting.   Thanks for the test.  Bob","03/28/2013","08:41:03 PM"

First real try after calibration.","03/28/2013","08:54:09 PM"

Seemed much too easy, which means my numbers are all wrong. Thanks Connie.  OH and the standard deviation for the 80M run was incredibly small by using the Reference signal.","03/28/2013","08:59:38 PM"

40 meter seemed to have a fair amount of Doppler except for the last half minute or so. I decided to use just that part of the data for my 40m computation.","03/29/2013","02:51:45 AM"

Signal good on both bands, but either my GPSDO was jumping around in discrete steps or there was significant Doppler on both 40 and 80 m.  Thanks for this, Connie, it's always a learning experience.  ","03/29/2013","08:41:35 AM"

40M signal was weak in NTX with lots of QSB and about 700 mHZ p-p Doppler shifting.  80M signal was good (search, find and destroy!) :)  Equipment: FLEX-1500 with (new!) Thunderbolt GPSDO.  I measured offset tones with Speclab.  Hope we have next test before ARRL FMT with reference signal BELOW test signal.  Thanks much Connie!","03/29/2013","09:10:16 AM"

Both entries were measured peaks.  On two-frequency test, measured both peaks and delta agreed within 4 mHz.","03/29/2013","09:39:48 AM"

Good signals again this week.  Thanks!","03/29/2013","09:40:40 AM"

OK signal on 40M, 3600Khz was good but 3598 covered by QRM with high QRN. Couldn't find 3598 through interference ... Thanks, Jim","03/29/2013","12:47:36 PM"

Thanks for the test. Jerry W4UK Used GPS stabilized Flex 5000 plus WSPR FMT tools.","03/29/2013","06:32:40 PM"

Looks like K5XL hit the nail on the head for 80 meters!


Connie, K5CM





back to main page