[R-390] Tube esters

[Kenneth G. Gordon]

On 25 Jun 2007 at 23:52, Scott Bauer wrote:

>  I was told by Chris Haedt ( another tester guru)( SK) a few years ago
> to try and find one of three testers. A Heath TT1A, A triplett 3444A 
> or a B&K 747B. The
> reason is the newer mutual conductance circuit design. Heath and
> WEston are practically the same tester. They are both owned by
> Daystrom so you could also look for a Weston 981.

Interesting: I have a Triplett 3444 (not the "A" model) which is a darned 
good machine. However, at the moment I have nothing which shows me 
how and where to adjust the various voltages. The selenium rectifiers in 
it are getting very leaky and I want to change them before they take out 
a transformer.

Ken W7EKB