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

[Carl]

Nope, its no wonder considering their attitude problem on the telephone.

Carl
KM1H


----- Original Message ----- 
From: "Roger (K8RI)" <k8ri at rogerhalstead.com>
To: <amps at contesting.com>
Sent: Monday, October 21, 2013 2:00 AM
Subject: Re: [Amps] 200-ohm tank and "un-un" in HF amp design?


> 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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