[R-390] T203

[Dennis Wade]

I got into the shop last night and pulled T203 to try and discover why
my 2 and 3 mc/s bands were deaf.

In order to get it out, I had to pull the two in front just to be able
to grip the thing.  Once I had it out, I noticed that the slug was
different in appearance than the other two.  It has a glossy finish,
almost like it was coated with a shellac, where the other two (and all
the rest) have a very flat matte finish.

Nothing was apparent on a visual inspection.  No sign of burning or
other evidence of too much power.  Just in case, I swabbed the pins
and sockets with DeOxit.  Used a cotton swab on the pins and a very
small brush in the sockets.  Re-installed.

Powered up and now I have an *almost* normal level of Cal signal.  The
T-203 core is now almost at the top of its range instead of almost at
the bottom, but adjusting it shows no real definite peak..just a very
broad increase.  The caps all show a nice peak.  I did notice that
with an antenna connected, where the ANT TRIM control peaks varies
alot from one end of the band to another...from the far right through
zero to the far left.

Next time I will go and swap cores and see if it acts differently.

I'm still don't trust T203.  Is that ANT TRIM behavior to be expected
on the 2 and 3 mc/s bands?  The antenna is a 120ft long dipole.

            Dennis

-- 
Dennis L. Wade
KG6ZI
Carmichael, CA