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

[Roger (K8RI)]

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
>