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Re: [TenTec] Tx IMD and Purity

To: rmcgraw@blomand.net, Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] Tx IMD and Purity
From: Richards <jrichards@k8jhr.com>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Tue, 02 Jul 2013 19:45:50 -0400
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
Gentlemen. Re: higher voltage circuits... would it be too difficult to develop a power supply, maybe a linear type, that outputs two different voltages for different parts of the radio? Specifically, what if most of the rig was run with 13.8 v as it is now, but the PA and other necessary PA-related components were run on, say 24 or 48 volts, with all power tapped from different windings on the same transformer? Might that assist manufacturers in minimizing the cost to convert to higher voltage circuits, while maintaining some continuity - all working toward a cleaner output, with minimal rework to the whole deal?

--------------------  K8JHR  ---------------------


On 7/2/2013 8:57 AM, Robert Mcgraw wrote:

Audio amplifier designs that produce significant amounts of power all
have been using bipolar +/-36 volts to +/-56 volts for years.  They for
the most part use switching supplies internal.  No reason ham
transceivers can't follow suit.  Even a +50 volt supply would be
preferable for a transceiver.


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