Hi Peter,
The semi-automated calibration procedure assumes that you will use
calibration signals on at least two different frequencies.
You have used just one, at 144.450 MHz. Nevertheless, I think you can
do a good job of calibration with your existing data, using "by hand"
the individual tools is the calibration toolkit.
Copy your file fmt.all into the "bin" directory in your WSJT-X
installation directory. Then open a command-prompt window, cd to that
directory, and run program "fmtave" the file fmt.all. I get the
following result:
C:\WSJT\wsjtx1.9.0\bin>fmtave fmt.all
Freq DF CAL N rms UTC Call
(kHz) (Hz) ? (Hz)
----------------------------------------------------
144.450 -129.118 1 22 1.63 21:34:34
The somewhat cryptic output says that your dial is off by -129.118 Hz at
144.45 MHz, a fractional error of -129.118/144.450 = -0.894 ppm (parts
per million). This number is the constant "B" defined in the graph
displayed in Section 13.1 of the WSJT-X User Guide:
http://www.physics.princeton.edu/pulsar/K1JT/wsjtx-doc/wsjtx-main-1.9.0-rc4.html#_frequency_calibration
It's the value that
If you set your 2-meter dial frequency low by 129 Hz, you'll be on
frequency.
If you're using CAT control in WSJT-X, go to Settings -> Frequencies and
enter -0.894 for "Slope". You can safely use 0.0 for "Intercept", which
should be close enough. Then you should be good to go. :-)
-- 73, Joe, K1JT
On 5/1/2018 9:12 PM, Peter Sumner wrote:
Hello,
following suggestions from others on this list I have tried to use
freqcal from WSJT-X 1.9.0-rc3 on a single GPS locked VHF beacon.
This beacon on 144.450 (VK5VF) runs a mixture of carrier and CW ID (on
off keying). Each time I run the process that is outlined in the
documentation when I select the "solve for calibration" I end up with
the quite unhelpful error telling me: "Calibration error Check fmt.all
for possible bad data" so I dutifully look in this file to try and
identify what is wrong (sample below)
21:34:34 144450 1 1500 1368.324 -131.676 14.5 39.8
21:34:36 144450 1 1500 1369.671 -130.329 14.9 38.5
21:34:39 144450 1 1500 1369.555 -130.445 14.8 40.1
21:34:41 144450 1 1500 1368.284 -131.716 17.2 34.2
21:34:44 144450 1 1500 1368.318 -131.682 16.5 36.1
21:35:34 144450 1 1500 1369.171 -130.829 15.9 38.1
21:35:36 144450 1 1500 1369.574 -130.426 14.9 39.5
21:35:39 144450 1 1500 1369.270 -130.730 15.8 36.2
21:35:41 144450 1 1500 1370.659 -129.341 15.4 36.1
21:35:43 144450 1 1500 1372.416 -127.584 14.9 38.3
21:35:49 144450 1 1500 1371.663 -128.337 14.8 39.2
21:36:19 144450 1 1500 1373.065 -126.935 14.7 41.5
21:36:21 144450 1 1500 1372.527 -127.473 15.7 35.2
21:36:24 144450 1 1500 1372.356 -127.644 19.3 28.5
21:36:26 144450 1 1500 1372.464 -127.536 20.3 26.5
21:36:28 144450 1 1500 1372.826 -127.174 19.7 28.8
21:36:34 144450 1 1500 1370.782 -129.218 14.8 40.4
21:36:36 144450 1 1500 1370.859 -129.141 14.9 38.2
21:36:39 144450 1 1500 1371.701 -128.299 14.7 41.4
21:36:41 144450 1 1500 1371.060 -128.940 16.1 37.6
21:36:43 144450 1 1500 1371.607 -128.393 14.8 39.4
21:36:49 144450 1 1500 1373.245 -126.755 14.8 38.1
Can any of the list members help me identify which of these lines of
data would be in error? Is the variance in offset too high as it goes
from, -126 to -131 Hz across the 30 second period, When I try a smaller
sample I get the error telling me there is not enough information in the
file, so that did not help,
Regards,
Peter, vk5pj
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