[Amps] QST Article 3-500 Tube Tester

[krishna kanakasapapathi]

Oct 2011

On 11/19/2012 1:01 AM, Jim W7RY wrote:
> Can anyone refresh my memory on which QST issue the 3-500 tube tester was in? I’ve been looking on the ARRL site and no luck.
>
> Thanks!
> 73
> Jim W7RY
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