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Total 3 documents matching your query.

1. LF: Re: CW beacon "BRK" on 137.00khz ??????? (score: 1): Author: "James Moritz" <[email protected]>; Date: Sat, 30 Apr 2011 12:16:32 +0100; Dear Gerhard, LF Group, There is an NDB "BRK" listed near Vienna on 408kHz, which is 3 x 136kHz. Allowing for +/- a little frequency for the AM sidebands this could be what you are hearing - the acti; /rsgb_lf_group-archives/html/rsgb_lf_group/2011-04/msg00300.html (10,975 bytes)
2. Re: LF: Re: CW beacon "BRK" on 137.00khz ??????? (score: 1): Author: Gerhard Hickl <[email protected]>; Date: Sat, 30 Apr 2011 20:03:42 +0200; James, Markus! Many thanks for your replies! Yep, "BRK" at 408kHz seems to be the source of the signal. Thank you Jim for that hint. BRK is about 50km from my QTH and quite strong here. In front of m; /rsgb_lf_group-archives/html/rsgb_lf_group/2011-04/msg00505.html (11,692 bytes)
3. Re: LF: Re: CW beacon "BRK" on 137.00khz ??????? (score: 1): Author: "Markus Vester" <[email protected]>; Date: Sat, 30 Apr 2011 17:24:02 +0200; Hi Gerhard, Jim, so this would look like a case of 3x LO harmonic mixing? This is actually one of the fundamental drawbacks of a direct converting receiver. For good dynamic range, you want to drive; /rsgb_lf_group-archives/html/rsgb_lf_group/2011-04/msg00678.html (11,744 bytes)

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