[Drake] T4XB dirty CW signal on 20 meters

[Dan W. Dooley]

My first suspicion would be a dirty rotary switch contact.  The fact that 
you'd rarely been on 20 and now are and find that this band alone is 
exhibiting the problem leads to that suspicion.

Dan W. Dooley WB5TKA
Dooley's Treasure Chest
  email: dandooley at pipeline.com
  Web: http://www.dooleystreasurechest.com


----- Original Message ----- 
From: "Andy Bullington" <abullington at comcast.net>
To: <drake at mailman.qth.net>
Sent: Thursday, March 02, 2006 4:51 PM
Subject: [Drake] T4XB dirty CW signal on 20 meters


> I've been working more and more with my R4C and T4XB lately and just 
> noticed something strange. For the last year I've been working only on 80, 
> 40 and 30 meters with the Drake setup and everything has been fine. Today, 
> being snowed in and having some free time I decided to try the higher 
> bands. On 20 meters the T4XB seemed to tune up fine but I noticed the spot 
> tone sounded a little harsh and a tad distorted. When I listened on 
> another rig using a receive antenna, sure enough...the CW note was not the 
> powerful clean note I've come to expect from the Drake. 80, 40 and 30 
> sound great but 20 sounds pretty bad. Any ideas? I've never updated the 
> power supply and wonder if it could be leaky filter caps. Is it possible 
> I've got a failing crystal for 20 meters? I've cycled the band switch and 
> other switches and they all seem fine. Thanks!
>                          Andy W1AWB
>
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