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