[Hammarlund] 180A Concerns & Problems(Long)

[Bill & Becky]

Hello,

I just found this group....Great!!  I just bought a decent
180A (SN68xx) for $150.
Althought it needs some work it does receive well but has a
few anomolies. The
underside doesn't show any modifcations/damage or repair.

My observation are these.........I have the late model
orignal manual and addendum.

1. ALL the tubes run very very hot, I removed the tube
shields and tuning cap covers
as per addendum.
My house AC is at 121VAC, the 180's 250VDC is at 275VDC, and
the 275VDC is
300VDC.  Should I run the 180A with a variac at 110VAC??
Will the 180A fail?

2 I have replaced tubes, cleaned switches etc. Was pretty
well aligned when I got it.
   The Ocsillator section (front) of the tuning cap makes it
impossible to get it to track
   right for alignment. i.e The end freq's are fine but the
middle is off quite a bit,  5Khz
   on the lowest BCB range.........even worse the higher the
band you choose.  Should
   the Main tuning cap be relaced????  It's difficult to see
if the mid-plates are even.

3. The addendum mentioned replacing R53 2K 10 Watt Wirewound
resistor with a
    4K 10 Watt Wirewound.........I did and it did
nothing??????

4. My AGC switch only is Fast and Off,  NO mid or slow
AGC,......mis-wired??


Thanks for reading..........I owned a 180A in the early
80's, I'm glad I found one
albeit needs some TLC.

Very Best,

Bill  KB9IV