Brian

Long time...glad to see you're still here. What are you up to on LF / MF?

Good point. Even a dead carrier conveys information...just not from the 
transmitting end.

Jay

To: <[email protected]>
Sent: Tuesday, January 12, 2010 5:46 AM
Subject: Re: LF: WSPR, QRSS, CW...

John, LF


On Mon, 2010-01-11 at 14:16 +0000, John P-G wrote:

Only a continuous, unmodulated carrier conveys no information (beyond
its frequency), so all the methods currently being discussed (QRSS,
CW, DFCW, Hell, PSK - yes even WSPR) are forms of information
transmission i.e. "message passing" - and thus would fit your reading of

"self-training in radio communication".

A minor point but a 24 hours continuous transmission of unmodulated, gps
disciplined carrier on 137 KHz over 1000Km path (approx) apparently
reveals quite interesting data on propagation dependent phase change if

received appropriately.

Now, let's all just get on and play radio....

Brian CT1DRP