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Hi Chris,
2 min 10 sec would actually match my transmission
timing. The calculated symbol duration was 60.186 seconds, in a
sequence of 2 on, 1 off, 2 on, 5 off. There are no gaps between
consecutive dashes but 180 degree phase shifts, which should look
like tiny knots in a spectrogram line. Actual keydown times were
slightly longer because of a 5 second overhang of the smoothed ramps at
turnon and turnoff.
For comparison, I have uploaded two local grabber
shots from Sunday night:
I won't be able to transmit during this week
but perhaps again next weekend.
Best wishes
Markus, DF6NM
----- Original Message -----
Sent: Tuesday, November 04, 2008 1:30
PM
Subject: LF: Signals on 136/7
Hi All,
Thanks to those who commented about my 'mystery'
signal - Andy (KU4XR), Markus (DF6NM) and John (F5VLF).
I agree the first letter looks like 'F'. I don't
think the timings are quite right for your TX Markus, although the frequency
is. The 'bursts' of signal lasted about 2min 10sec each. So still an
unknown really. No trace of the same signal last evening. Will look again
tonight.
Thanks and 73.
Chris, G4AYT, Whitstable, Kent,
UK.
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