----- Original Message -----
From: "Paul Gerhardt" <[email protected]>
To: <[email protected]>
Sent: Tuesday, February 21, 2012 7:05 PM
Subject: Re: [Drakelist] 1st check of TR-4c
Re-soldered the mic connector to put the tip on the switch
and ring on the
mic as shown in the manual and heard someone calling CQ so
made a contact
to S. GA with the Turner 454 SSB mic and got a good
report.
Issues:
Now idle plate current is quite high so will need to adj
it down. The AC-4
is set for proper idle on the T4b now. It is reading
230ma so the meter
resistor is on the list to check. I did this on the T4
when setting the
bias.
S-Meter seems to reads quite low but is moving. Meter
reads zero with no
signal on 40M when my other radio shows couple S units of
noise. Meter
only goes to half scale when PTT is pushed.
--
Paul Gerhardt
K3PG
http://pgerhardt.blogspot.com
QRP ARCI 6674
FP 274
I will repeat a standard approach: Work all the screws,
ground connection is made through a number of them and
contact gets bad. Just take a screwdriver and work them back
and forth a few times. Also, clean the tube pins, I use a
fine wire brush. Also clean out the tube sockets with a
little deoxit and a fine brush like those sold for cleaning
between your teeth.
--
Richard Knoppow
Los Angeles
WB6KBL
[email protected]
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