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Re: LF: 74550 - opds-64

To: <[email protected]>
Subject: Re: LF: 74550 - opds-64
From: "Markus Vester" <[email protected]>
Date: Sun, 8 Dec 2013 23:03:10 +0100
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Regarding opds-64 (or 65?) setup, I had forgotten to mention two more lines to be edited in opds.ini:
 opspeed=64    ' speed definition
 spotdelay=58  ' same timestamp offset as from Opera
 
In Graham's words, there's really a whole "cactus" of spikes in the 238 µHz spectrum. Most are on a 16.67 mHz raster, because large parts of the BCD time-message from DCF77 are repeating every minute. I have now recalibrated the frequency scale, and restricted the opds search range from 74548.1 to 74550.0 Hz.
 
Anyway given the QRSS levels from Bob last night I am quite optimistic.
 
Best 73,
Markus (DF6NM)
 

Sent: Sunday, December 08, 2013 8:40 PM
Subject: LF: 74550

...
For the night to come, I'm set up for monitoring opds-64 in a 4 Hz slot around 74.55 kHz, and will be uploading screenshots and possible detections to the usual opds grabber http://dl.dropboxusercontent.com/u/26404526/opds.htm
In case others want to try: SpecLab FFT settings can be similar to opds-32 but more decimation is needed for half bandwidth (0.238 mHz). In opds.ini, center frequency and decimation should be edited: fc=74550, dec=50331648 .
 
Best 73,
Markus (DF6NM)
 
 
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