[Hammarlund] Retubing an HQ-180

[Glen Zook]

I do not recommend completely "retubing" a receiver. 
For one thing, you may have to do a complete
alignment, then have to do it again after the tubes
"age" a bit.  Tubes last for years.

The best "tube checker" is the receiver itself.  If
the tube is functioning properly in the circuit, then
there is no need to replace it.

I do recommend having a set of "spares" just in case
you do lose a tube.  But, to do a complete retubing of
the receiver is, in my opinion, an expense that is not
necessary.

Glen, K9STH


--- Mike McCoy <mikemccoy@austin.rr.com> wrote:
> I just had to replace the 12AU7 BFO-meter tube in my
> active 180 (which I
> stole from from an older retubed 180). Because I
> needed to replace a tube
> (and not having a tube tester to check the rest)
> makes me think I might
> want/need to completely retube it in the not too
> distant future.


__________________________________________________
Do You Yahoo!?
Yahoo! Greetings - send holiday greetings for Easter, Passover
http://greetings.yahoo.com/