[Hammarlund] 6C4 issues - progress ! (was dead on 15m HQ-170a)

[Glen Zook]

This is exactly the reason that I say the best tube checker in the world is the unit itself.  I have seen a lot of occasions where a tube would check "good" in a tube tester and not work at all in the radio.  Then other tubes check bad in a tube tester and work fine in the radio.

Glen, K9STH

Website:  http://k9sth.com


--- On Wed, 1/21/09, Mike & Coreen Smith <ve9aa at nbnet.nb.ca> wrote:

Today, a friend @ work loaned me his Mercury 202 tube tester and gave me a brand new 6C4 tube (which tested quite good, but not FULL scale on the meter. (maybe 80-90%..)
 
I popped in the good tube and now 15m is alive with Xtal Cal signals and has been for 1/2 hour...........now I have jinxed myself I know it.  After I type this email and hit <send>,. 15m will die for sure.
 
I tested the old 6C4 tube and it also tests good, but a little lower. (60-70% on the scale)....