tubes age 22
Not all Westinghouse tubes had etched an number though. I've got a little 5654
sized WE409A (6AS6) setting here that I just removed from a piece of military
UHF gear that I scrapped that has no etched number. Everything is in yellow
paint, including the date code. :-)
>At the moment, it appears I have some NIB 6CB6's that cost twice what
>they should have and are of dubious manufacture.
Welcome to the ripped off tube buyers club. I've been a member since the 70's.
;-( The conspiracy deepens....
Speaking of which. Do any of you guys remember an outfit back in the late 60's
and early to mid 70's that was famous for their 36 cent tubes? I ordered some
tubes from them on several occasions. Most of which weren't all that hot but the
law of averages usually worked in your favor if you ordered three of one type,
you'd usually get a good one. I suspect that most of them were factory culls.
The name of the company was Cornell or Cronwell, or something like that. I'd
love to get a copy of one of their old sales fliers if any of you guys still have one.
------------------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------------
Date: Sat, 22 Jan 2000 17:25:51 -0600
Subject: [R-390] 0A2 testing
>I give up. How come there is no data to test the OA2 in a tube tester? .... the
TV 10D.
Joe, I don't know about the TV-10D, but there is data for testing an 0A2 in a TV-
2*, TV-7*, and even the old I-177 series military testers. Does your data list the
0B2? If so, all of the settings are the same with the exception of the shunt
setting. For the TV-7 series, the 0A2 shunt setting is 32 whereas it's 40 for the
0B2. You should be able to get a rough idea if you do have 0B2 data. Also,
about half of the problem regulator tubes that I've had checked "good" on
testers.
>Can it only be tested in the circuit? What if it shorts when its hot?
If it shorts, the normally regulated 150+ to the PTO would probably shoot up to
about whatever the normal B+ is. [actually it goes to zero]
(14 pages)
(10 pages)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Commentaires sur ces manuels