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Re: LF: TRANSVERTERS

from [Roger Lapthorn] [Permanent Link][Original]
To: "[email protected]" <[email protected]>
Subject: Re: LF: TRANSVERTERS
From: Roger Lapthorn <[email protected]>
Date: Tue, 6 Nov 2012 18:27:42 +0000
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For 500kHz use an FT817 at 500 mW as the transceiver and my transverter design? Neither get hot. 

A 15W version for 136kHz coming soon too. 

Works like a dream and simple. 

73s
Roger G3XBM

On 6 Nov 2012, at 16:45, "mal hamilton" <[email protected]> wrote:

   RIG/TRANSVERTER HEAT
I have noticed when running a Transceiver at low power for Transverter or other use the Transceiver PA gets very HOT so it would appear that this is an inefficient approach except the Transceiver has a dedicated low power output.
I was wondering what system was used to reduce this power. It would be better to disable the PA and take the output from the driver stage.
It is vy noticeable on an IC-706
 
de G3KEV
 
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