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LF: Re: Vacuum tubes on Motherboards...

To: [email protected]
Subject: LF: Re: Vacuum tubes on Motherboards...
From: "John Rabson" <[email protected]>
Date: Tue, 22 Oct 2002 10:28:47 +0100
References: <[email protected]>
Reply-to: [email protected]
Sender: <[email protected]>
A few years ago, I was restoring an ancient Hallicrafters receiver and
noticed the crisp quality of the audio compared with that of a 1960s
transistorised communications receiver. I spoke to one of the experts at BT
Labs, who suggested that the output transformer might have something to do
with it. Also, the characteristics of a bipolar transistor audio output
stage are _not_ identical to those of a pentode or beam tetrode.

73,
John Rabson G3PAI




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