K5CM FMT - November 7and 8th, 2008 Results

 

Transmit frequencies in Hz  80 meters Friday night run

    K5CM 

    80 Meters F1-   3568500 Hz  Call up frequency   (November 7th 8:45 pm CDT)

    80 Meters F2-  3567995.7 Hz   ( 504.3 Hz tone )

    80 Meters F3-   3566513.3 Hz   ( 1986.7 Hz tone )

 


 

Jeff, W3JW hit the nail on the head on all three FMT's !!!

 

Call F2 Tone Error F3 Tone Error
W3JW VA 504.3 0.000 0.00E+00 1986.7 0.000 0.00E+00
K6OQK LAX 504.5 0.200 3.96E-04 1986.7 0.000 0.00E+00 Using DigiPan out of 3586B zeroed to carrier at 3568500
WA1ABI RI 504.5 0.200 3.96E-04 1986.8 0.100 5.03E-05 That was challenging and fun. Tnx Connie.
W6OQI LAX 504 -0.300 5.95E-04 1986.7 0.000 0.00E+00 Wow, this test went fast.
N7EP AZ 504.4 0.100 1.98E-04 1987 0.300 1.51E-04
K6HGF LAX 504.6 0.300 5.95E-04 1986.9 0.200 1.01E-04 10 seconds is fast!
K1GGI EMA 504.4 0.100 1.98E-04 1906.9 -79.800 4.18E-02 Good copy here. Just taking it on faith that the freqs were lower than F1, no time to tune and confirm.
AA8K MI 384.2 -120.100 3.13E-01 860.8 -1125.900 1.31E+00 Well, that was fun. The station in the middle made it interesting.  Stock Flex-Radio Systems SDR-1000 plus Spectrum Lab.
N5LBZ MS 1988.7 2.000 1.01E-03 I am probably way off. I did not hear the callup and then only heard 3 ten second tones so I am assuming they were the last three. Had RX on 3567.5 but added 1khz to results to compensate for F1 being 1khz higher
W0HBK IA 503 -1.300 2.58E-03 I didn't have time to measure F1-F3.
w6ihg VA No signal heard Jerry

 


Transmit frequencies in Hz  80 meters  Saturday night run

    K5CM 

    80 Meters F1-   3567500 Hz  Call up frequency   (November 8th 8:45 pm CDT)

    80 Meters F2-  3566797.4 Hz   ( 702.6 Hz tone )

    80 Meters F3-   3566513.3 Hz   ( 1996.3 Hz tone )

 

call Section F2 Tone F3 Tone comments
VE2AZX QC 702.6 1996.3 Not available for 20m test.  Another interesting FMT.  Thanks Connie.  Jacques  VE2AZX
W1PW AZ 702.6 1996.3 F1 (callup) appeared to be 14067500.250 on 20M and 3767500.120 on 80M.  Lots of fast footwork with SL Text output into Excel. I tried Friday night also, but got no results to report and had to re-group my test method which I used for the first time today.  Thanks for the tests, Connie!
W3JW VA 702.6 1996.3 Tnx fer the practice FMT Connie.
W6IHG VA 702.6 1996.3 Good signals today, tried two different approaches. Not sure I have math right on 80m. Jerry
W9TJ IL 702.6 1996.3 This time worked, no QRM.  Gear was cold with less than 1.5 hours warm up.  Thank you very much for a second try.
WA1ABI RI 702.6 1996.3 Thanks for the FMT Connie.
K1GGI EMA 702.7 1996.3 Good sigs, not much spread on either 20 or 80. Thanks for the fun.
K6OQK LAX 702.5 1996.2 Signal was weak with a lot of Doppler tonight.  Very different from last night.
WB6ZQZ EB 702.73 1996.45 First FMT for me. Using Icom Pro III, Spectrum Lab software, WWV. Nothing fancy. Thanks for the effort of running this test! Alan, wb6zqz
N5LBZ MS 702.8 1995.8 Much better this tim had good signal on 80 and readable signal on 20. And this time I hope I didnt mess up.
AA8K MI 704 1994 No time for me to run Spectrum Lab, so this is a quick readout from the croshairs on the Flex-Radio SDR-1000.
AA8K MI 704 1994 No time for me to run Spectrum Lab, so this is a quick readout from the croshairs on the Flex-Radio SDR-1000.
N7EP AZ 702.5 I missed the 20 M test.  Signals good.  Very hard to measure 10 second tests.

 

 

 

 


Transmit frequencies in Hz  20 meters  Saturday afternoon run

    K5CM 

    20 Meters F1-   14067500 Hz  Call up frequency   (November 8th 3:45 pm CDT)

    20 Meters F2-   14066983.9 Hz   ( 516.1 Hz tone )

    20 Meters F3-   3566513.3 Hz   ( 1960.5 Hz tone )

 

call Section F2 Tone F3 Tone comments
W3JW VA 516.1 1960.5 Tnx fer the practice FMT Connie.
K1GGI EMA 516.1 1960.6 Good sigs, not much spread on either 20 or 80. Thanks for the fun.
WB6ZQZ EB 516.05 1960.44 First FMT for me. Using Icom Pro III, Spectrum Lab software, WWV. Nothing fancy. Thanks for the effort of running this test! Alan, wb6zqz
W1PW AZ 516.028 1960.45 F1 (callup) appeared to be 14067500.250 on 20M and 3767500.120 on 80M.  Lots of fast footwork with SL Text output into Excel. I tried Friday night also, but got no results to report and had to re-group my test method which I used for the first time today.  Thanks for the tests, Connie!
K6OQK LAX 516.2 1960.6 Signal was weak with a lot of Doppler tonight.  Very different from last night.
N5LBZ MS 519.2 1961.8 Much better this tim had good signal on 80 and readable signal on 20. And this time I hope I didnt mess up.
W6IHG VA 507.8355 1952.238 Good signals today, tried two different approaches. Not sure I have math right on 80m. Jerry
AA8K MI 566.2 2010.6 No time for me to run Spectrum Lab, so this is a quick readout from the croshairs on the Flex-Radio SDR-1000.
K6BZZ AZ 515.84

 

 


Rules used in this FMT:

 

I will transmit on 3 separate frequencies as shown below. F2 and F3 will be between 500 and 2000Hz below F1.

 

F1:The call up frequency for about 3 minutes. The call up will be in standard keyed Morse code.

 

F2: For 10 seconds key down

F3: For 10 seconds key down

 

F2: For 10 seconds key down

F3: For 10 seconds key down

 

F2: For 10 seconds key down

F3: For 10 seconds key down

 

Because of QRM I may not be exactly on the published frequency, so measure F1 for your calculations. I will also post the F1 frequency here and on FMT-nuts after the end of the run.

 

Calculate and report the difference between F1 and F2.

Calculate and report the difference between F1 and F3.

 

Although I have the resolution to set frequency to .001 Hz for all three frequencies, I will only set to .1 Hz for this test.

 

 

 

No West coast run this time.

 

 


 

Transmitting equipment used by K5CM for this FMT:

A Trimble Thunderbolt GPS frequency source clocks a HP-3336B. A 10 db transistor amp follows and drives a 12BY7 / pair 6146. Then to the final amplifier, a Dentron 2500 running 200 watts on 80m. 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 WWVB.  I monitor each transmission with a completely separate receive system to look for any instability or short term drift. The separate system is not locked to the GPS but calibrated by the GPS system before the FMT.

Antennas:

160 - Vertical

 80 -  Cage Dipole (favors East, West, and North)

 40 - Dipole (favors East, West)

 

 

 

Current W6OQI FMT transmitting equipment:

 

My Transmitting setup consists of a HP Z3801 clocking a HP 3336B which drives a Johnson Viking I transmitter, the output of which is attenuated by a 6 db attenuator, to then drive an Icom PW-1 amplifier to about 500 watts. The antenna is an inverted Vee which favors north and south from the Los Angeles area.

 

 

Note: Because I put the results up quickly, there will be mistakes, so don't hesitate to point them out quickly. 

 

73,

Connie

K5CM

 

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