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Re: [Amps] 200-ohm tank and "un-un" in HF amp design?

To: amps@contesting.com
Subject: Re: [Amps] 200-ohm tank and "un-un" in HF amp design?
From: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Mon, 21 Oct 2013 02:00:34 -0400
List-post: <amps@contesting.com">mailto:amps@contesting.com>
On 10/20/2013 8:54 PM, Carl wrote:
All 3 of the Command Tech amps 1/2/3 tubes used a single toroid switched
for 40, 80, and 160 followed by the balun. It was the switched pi net
toroid that caused problems.
On the 6M amp they also use a balun.

When Palstar bought the line they went to 3 seperate toroids and kept
the balun.


Is Palstar still building amps?

73

Roger (K8RI)

Ive worked on several of all models from both companies and havent had a
balun problem but none were used for RTTY that Im aware of.

Carl
KM1H


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