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LF: Loran line frequencies within narrowband LF slots

To: <[email protected]>, <[email protected]>
Subject: LF: Loran line frequencies within narrowband LF slots
From: "Markus Vester" <[email protected]>
Date: Fri, 7 Jun 2013 00:19:27 +0200
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Dear Joe, LF,
 
as a hint for frequencies to avoid with narrowband digital work (Op-32 and WSPR-15), as well as a calibration aid, I have compiled a list of Loran lines for different receiver target areas:
The line frequencies were calculated straightforward as multiples of 100kHz / GRI / 2. It is a rather long list, however for example for TA-Eu work it will be sufficient to avoid hitting entries for the first few GRI's in the list. Here in Germany, we see only lines from the Lessay (6731), Sylt (7499) and Russian (8000) chains. Around America, Loran has gone all silent except for occasional overnight test transmissions from Wildwood / Cape May.
 
In addition to the Loran lines, my Op-32 correlation receiver is affected by three locally generated spurious carriers:
 
Best 73,
Markus (DF6NM)

 
Sent: Thursday, June 06, 2013 6:26 PM
Subject: Re: LF: VO1NA - 137.7770 kHz
...
Graham, G0NBD, could you suggest a good QRG for OP32 now that the TX is no longer rock bound on 137.777 kHz as it has been for the past decade.
...
 
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