[Heath] Biasing in the SB-200

[Kenneth G. Gordon]

On 27 Sep 2011 at 21:15, rburns2548 at charter.net wrote:

> Dont design for the chinese use american or british tubes.

Sure. Where do you buy those?

Cetrons haven't been made in at least 10 years.

RF Part's "Taylors" are Chinese made.

If you want NEW tubes, your only choices these days are Chinese or 
Russian (or Bulgarian or Czech)

Finding New Old Stock 572Bs is an exercise in frustration.

Do you have a source for those?

**I** don't know of any. Please advise.

Ken W7EKB