With time or temperature related problems, I've found that freeze spray or even
"computer dusting spray" can be useful for locating defective resistors and
capacitors.
Enjoy those Drakes.
73,
Evan, K9SQG
-----Original Message-----
From: kc9cdt <kc9...@aol.com>
To: captcurt <captc...@flash.net>; drakelist <drakelist@zerobeat.net>
Sent: Tue, Oct 30, 2012 10:06 am
Subject: Re: [Drakelist] R4B S-meter drift
I always trouble shoot by swapping tubes...not using a tube tester.
73,
Lee
-----Original Message-----
From: Curt Nixon <cptc...@flash.net>
To: drakelist <drakelist@zerobeat.net>
Sent: Tue, Oct 30, 2012 9:56 am
Subject: Re: [Drakelist] R4B S-meter drift
Yep Ski..
Both my A and B do this...interested in a fix shortcut...have not really
spent any diagnostic time on it to date.
Curt
KU8L
On 10/29/2012 10:54 PM, Fred or Ski wrote:
I have an R4B that in the last 5 or so years has had what I think is
excessive drift in the S-meter zero. I saw a posting from Garey that
mentioned checking and/or replacing V4 or V5. I checked both and they
had good emission and no shorts. When I first turn on the radio, the
meter reads around S-6 and works its way down to eventually
near S-1 with no antenna. It takes at least half an hour to get to
the S-1 mark. Also if I set the 'meter zero' earlier that the half
hour, It will be off if the radio is left on longer. I suspect the
the meter should 'settle down' faster than that. Has anyone else
noticed this problem and what did you do to correct it. I didn't
replace the tubes, and maybe that is my next step.
I appreciate any suggestions you might have.
73,
Ski-WB8YXI
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