From: "Mike Dennison" <mike.dennison@ntlworld.com>
To: rsgb_lf_group@blacksheep.org
Date: Mon, 13 Dec 2004 10:33:35 -0000
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Subject: LF: Linear amps for data
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On 12 Dec 2004 at 16:33, Bill de Carle wrote:

> Another way to do this is to use a linear Tx and an audio beacon
> message generated by a sound card.

This discussion has come full circle since I asked for 
designs for linear transmitters for data modes.

It seems to me that there is still a case for a 'simple' linear 
Tx to allow newcomers to get on the band without the 
perceived  'barrier' of learning Morse. Of course, for working 
DX the penalty of lower efficiency may be a problem, but 
there are plenty of LF operators who have no interest in DX.

One person mentioned the BK Electronics audio amps, 
though as I recall he had not checked its linearity. These 
could be a cheap way of generating 100W or so, but I dread 
to think of the linearity of an amp operated well outside its 
design frequency.

And in case the Thought Police want to have a go, I love 
Morse and also working DX. It's just that many others do 
not share this preference.

Mike, G3XDV
http://lf.apersonalguide.co.uk