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

[Mike & Coreen Smith]

Thanks everyone. Too many replies to email back individually.
Well, it's been running a few hours )off and on) with solid operation on 
15m....before it was essentially zero operation
on 15m.

I have noticed some slight variation in signal strength each time I turn the 
receiver on; in that 160m and 80m will sometimes
peg the meter with the Xtal cal, and other times, maybe only 10-20dB over 
s9.....so I still have some intermittent(?)
or alignment issues, but compared to what it was, it's a huge difference and 
it's actually a real nice rig to listen to.

Thanks everyone.

I'll stop bothering y'all for a few days,  while I scour the 'Net for a used 
Tube Tester and test a few tubes on my borrowed one.

(I gave away a nice Heathkit one with probably 250+ tubes about a decade 
ago.....SIGH......hindsight is 20/20 !)

Mike VE9AA

Mike, Coreen & Corey Smith
699 Rte 616 Keswick Ridge
NB
Canada
E6L 1T1
  ----- Original Message ----- 
  From: Kim Herron
  To: gzook at yahoo.com ; hammarlund at mailman.qth.net ; 'Mike & Coreen Smith'
  Sent: Wednesday, January 21, 2009 8:23 PM
  Subject: RE: [Hammarlund] 6C4 issues - progress ! (was dead on 15m 
HQ-170a)


  I second what Glen said here.  In fact, if memory serves, Drake's 
suggestion
  on checking tubes was to put them in a known good operating receiver and 
see
  if they work.  I've been doing that with 6F6's and 6L6's for the antique
  radio work that I do.  Testers find shorts, gas if it's real bad and open
  filaments.  After that, it can be plug it in and see if it plays.

  Kim Herron W8ZV
  www.goldenradioservice.com
  kim.herron at sbcglobal.net
  1-616-677-3706

  -----Original Message-----
  From: hammarlund-bounces at mailman.qth.net
  [mailto:hammarlund-bounces at mailman.qth.net] On Behalf Of Glen Zook
  Sent: Wednesday, January 21, 2009 6:58 PM
  To: hammarlund at mailman.qth.net; Mike & Coreen Smith
  Subject: Re: [Hammarlund] 6C4 issues - progress ! (was dead on 15m 
HQ-170a)


  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)....



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