[Boatanchors] DRAKE TR-3

[Dave Harmon]

>>> How can I tell if the tube is bad without a tube checker.<<<

Replace the tube.....

Regards

Dave Harmon
K6XYZ[at]sbcglobal[dot]net
Sperry, Ok.

-----Original Message-----
From: boatanchors-bounces at mailman.qth.net
[mailto:boatanchors-bounces at mailman.qth.net] On Behalf Of AD5VJ Bob
Sent: Sunday, November 22, 2009 2:55 PM
To: boatanchors at mailman.qth.net
Subject: [Boatanchors] DRAKE TR-3

I am in the middle of restoring a Drake TR-3 and so far everything is going
well.

However, I have a question:

I have her receiving a cw signal right now on 14.025 or so, but the speaker
volume seems low and the S needle is sitting at 20 over
nine in rx mode.

I cleaned the tube sockets with WD-40 and the wafer switches, but it didn't
change anything. 

I am guessing I may have an AGC tube starting to go south, but dont have a
tube checker to be able to tell.

I also have around a .05 reading steady reading on the plate current meter
when it is in rx mode.

How can I tell if the tube is bad without a tube checker.

Bob AD5VJ 

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