Re: LF: Weak Signals - was 500kHz CW

To:	[email protected]
Subject:	Re: LF: Weak Signals - was 500kHz CW - calling CQ
From:	Andy Talbot <[email protected]>
Date:	Sun, 15 Nov 2009 11:36:06 +0000
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This presentation was aimed at Microwave operators, but has plenty of relevance to LF

http://g4jnt.com/MartleSham.htm
Includes soundclips of CW buried in noise with accurately defined S/N ratios

Andy
www.g4jnt.com

this email has been scanned for political correctness by the nanny state

2009/11/15 Andy Talbot <[email protected]>

It'll never catch on.

Mild source coding, inefficient error correction, incoherent demodulator and an inability to reduce receiver bandwidth anything below 30Hz :-{

2009/11/15 Roger Lapthorn <[email protected]>

If anyone's about, I am trying to use a new fangled digital mode (it's called CW) on 500kHz. Calling CQ around 501.7 and looking for any calls.

Have heard M0JXM calling CQ but he did not hear me.

73s
Roger G3XBM

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Re: LF: Weak Signals - was 500kHz CW - calling CQ