I have a very nice R4C it had a hum with bad audio distortion so I decided to
investigate, whilst taking it apart I noticed that if I touched the noise
blanker the hum would alter, I removed the NB board and the hum was still
there, I found eventually that the audio transistor had desoldered
: Wednesday, October 31, 2012 2:10 PM
Subject: [Drakelist] R4C Hum and audio transistor
I have a very nice R4C it had a hum with bad audio distortion so I decided to
investigate, whilst taking it apart I noticed that if I touched the noise
blanker the hum would alter, I removed the NB board
would rather just deal with the root issue and solve it.
Paul, W9AC
- Original Message -
From: kc9...@aol.com
To: w...@arrl.net ; drakelist@zerobeat.net
Sent: Wednesday, October 31, 2012 2:39 PM
Subject: Re: [Drakelist] R4C Hum and audio transistor
Why not install
I must admit this receiver will probably benefit from the Sherwood audio board,
however comparing both my R4C's one is perfect with no hum and very good audio
whilst this one is shushy and has bad hum, maybe the main caps need replacing
but when I couple another cap accross them no change so I
- Original Message -
From: Max Cotton airra...@dsl.pipex.com
To: drakelist@zerobeat.net
Sent: Wednesday, October 31, 2012 11:10 AM
Subject: [Drakelist] R4C Hum and audio transistor
I have a very nice R4C it had a hum with bad audio
distortion so I decided to investigate, whilst
[mailto:drakelist-boun...@zerobeat.net]
On Behalf Of Max Cotton
Sent: Wednesday, October 31, 2012 3:12 PM
To: drakelist@zerobeat.net
Subject: Re: [Drakelist] R4C Hum and audio transistor
I must admit this receiver will probably benefit from the Sherwood audio
board, however comparing both my R4C's one
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