[Collins] KWM2A V13

[Dutch Maurer WB7DYW]

Rick,
The 6U8's are a bad tube from the start, the blue glow is normal on most of them depending on mfg, on the audio: with the rig up-side down front of the rig facing you look on the left side for a 10UF (I think) electrolytic cap, that may improve your audio...  if you can replace all the electrolytic caps under the chassis...

73's Dutch WB7DYW
CCA Member # AC99-00918
Please visit my website: www.wb7dyw.com

"Life is not a journey to the grave with the intention of arriving safely in a handsome and well-preserved body, but rather to skid in sideways, thoroughly used up, totally worn out, a cold beer in one hand ... and a big hot greasy hamburger in the other and screaming: 'Woo Hoo! What a ride!"

--- On Tue, 1/31/12, Rick Gouge <rickgouge at shaw.ca> wrote:


From: Rick Gouge <rickgouge at shaw.ca>
Subject: [Collins] KWM2A V13
To: Collins at mailman.qth.net
Date: Tuesday, January 31, 2012, 7:34 PM


I have been working on my 1964 KWM2A for the last few days. Just your basic clean up and tweeking you have to do when its been sitting on the shelf for too long. Everything seems to be working very nicely right now. I only have one concern. V13  6U8A has a slight blue glow to it like its gassy. I have change the tube out a few times and its still there. So my next guess would be that something in that circuit needs to be look at. The first thing i did was get the resistance chart for the tube sockets. the only thing that i could find out of res was pin 6 which should measure 8K. It mearsures 10.51 K  Could that be my gassy effect or should i dig deeper or just don`t worry about it? The only thing i could find wrong that could be a little problem in that area would be that my audio on the 4 Ohms speaker is not the nice perfect audio that you should get from a KWM2A and my calibrator is a wee bit off, I will look on my schematic again.  What do you
 think Boys am i just being a 
worry wart?
Rick VE7RiK
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