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Markus
Very interesting and a neat way to display the
information!
If you like I can place TIL on this evening
starting at local sunset ~0100UTC on a different frequency then John. I'd
like to do some key down tests on the new 1KW amp module so I could kill two
birds with one stone.
Please advise on a frequency that would work.
I can do anything a AD9850 will allow feed with a 20MHz disp. osc. will
allow.
73 Scott
----- Original Message -----
Sent: Saturday, February 18, 2006 2:15
PM
Subject: Re: LF: Slow PSK result
Dear John and LF,
based on an idea by
Peter Martinez, I then tried to despread the PSK signal by multiplying with a
15+15 minute (+1, -1) sequence before doing the Fourier Transforms. This works
as expected, splitting up the Loran carrier and focusing John's signal to the
center frequency:
![]()
The recording was done using the E-field channel of my
normal colour-DF grabber hardware, ie. SSB receiver and standard soundcard. It
might be worthwhile to add in 1 Hz reference lines by coupling GPS 1pps pulses
into the RX input. One could then possibly use SpecLab's tracking function to
compensate for the LO frequency drift, but I haven't tried this in such a
configuration.
John, are you intending to transmit again
tonight?
73 de Markus, DF6NM
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