[R-390] Tube esters

[Bob Camp]

Hi

The whole issue of having a full set of tech manuals for both  
maintenance and full blown rebuild is a big issue on the commercial  
stuff. Some companies published that kind of stuff and a lot didn't.  
Even the military was not quite as good as they should have been on  
some test gear. The compelling argument in favor of the military  
testers is that you are more likely to find both the data and the  
parts to keep them running.

Bob
KB8TQ

On Jun 26, 2007, at 12:15 AM, Kenneth G. Gordon wrote:

> 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
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