ll my computers have my signature with various pearls of wisdom appended
thereto.
--
From: "Garey Barrell"
Sent: Saturday, March 10, 2012 11:20 AM
To: "Steve Wedge"
Cc: "Mike Bryce" ; "Randy WB4SPB"
;
/4
"I can't complain, but sometimes I still do."
- Joe Walsh
If the above message appears, it came from Steve's Son of Laptop!
- Original Message - From: "Garey Barrell"
To: "Mike Bryce"
Cc: "Randy WB4SPB" ;
Sent: Friday, March 09, 2012 10:2
e
Cc: Randy WB4SPB ; drakelist
Sent: Fri, Mar 9, 2012 11:16 pm
Subject: Re: [Drakelist] R4B Audio Distortion
I just wound up fixing an R-4C - and one of the things I did was to
swap V4
and V6.
That single exchange did more to reduce the noise in the receiver than
anyting else I could have don
"I can't complain, but sometimes I still do."
- Joe Walsh
If the above message appears, it came from Steve's Son of Laptop!
- Original Message -
From: "Garey Barrell"
To: "Mike Bryce"
Cc: "Randy WB4SPB" ;
Sent: Friday, March 09, 2012 10:21 P
Mike -
I think the problem is that 'new' tubes are 50 years old.. Even a few molecules of air a day adds
up after that long. When Drake assembled the radios, the tubes were _really_ new!! The 6EH5 gets
'really' hot in normal operation, and perhaps the heat/cool cycles are harder on the meta
ay, March 09, 2012 1:24 PM
Subject: Re: [Drakelist] R4B Audio Distortion
Update: resolved, and another gold star for Garey
In early February, I asked for ideas after finding my R4B audio output
stage running hot. Positive bias, climbing slowly to +3, would
mysteriously appear on the gri
I wonder.
when drake assembled the radios, did they go through three or fours tubes per
radio to get one that worked correctly?
dosen't seem logical. And although you can't argue with the fact that the
subing out the tube fixed the problem, I wonder if there is something hidden
down somepl
Altogether, I bought two 6EH5s and one 6CA5. I already had a spare 6EH5, so,
considering those alone, I had to try three to get one. If I count the 6CA5
that I bought, I had to try four to get one.
The 6CA5 IS very similar. Some sources do not even have the 6EH5 and refer you
to 6CA5. The t
,
Lee
-Original Message-
From: Randy WB4SPB
To: drakelist
Sent: Fri, Mar 9, 2012 1:33 pm
Subject: Re: [Drakelist] R4B Audio Distortion
Update: resolved, and another gold star for Garey
In early February, I asked for ideas after finding my R4B audio output
stage
running hot. Positive
Out of curiosity, how many 6EH5 tubes did you have to go through to find a
good one?
Al, n7ioh
Payson, Arizona, USA
On Fri, Mar 9, 2012 at 11:24 AM, Randy WB4SPB wrote:
> Update: resolved, and another gold star for Garey
>
> In early February, I asked for ideas after finding my R4B audio outp
Update: resolved, and another gold star for Garey
In early February, I asked for ideas after finding my R4B audio output stage
running hot. Positive bias, climbing slowly to +3, would mysteriously
appear on the grid after a few minutes of operation, and the audio became
distorted. Cooling t
Thanks Ron and Garey.
73,
Randy WB4SPB
- Original Message -
From: "Ron"
To: "Randy WB4SPB"
Cc:
Sent: Friday, February 10, 2012 3:50 PM
Subject: Re: [Drakelist] R4B audio distortion
Randy,
I have had excellent luck with
www.radiotubesupply.com/
Roy seems to k
/12, Garey Barrell wrote:
> From: Garey Barrell
> Subject: Re: [Drakelist] R4B audio distortion
> To: "Randy WB4SPB"
> Cc: drakelist@zerobeat.net
> Date: Friday, February 10, 2012, 2:54 PM
> Randy -
>
> OK. Well not all 'new' tubes are 'good'
y WB4SPB
- Original Message - From: "Garey Barrell"
To: "Randy WB4SPB"
Cc:
Sent: Friday, February 10, 2012 5:30 AM
Subject: Re: [Drakelist] R4B audio distortion
Randy -
Sounds like a classic case of a 'gassy' (grid emission) tube. Replace it!
73, Garey
of the
imagination. Where do you like to buy tubes?
73,
Randy WB4SPB
- Original Message -
From: "Garey Barrell"
To: "Randy WB4SPB"
Cc:
Sent: Friday, February 10, 2012 5:30 AM
Subject: Re: [Drakelist] R4B audio distortion
Randy -
Sounds like a classic cas
Randy -
Sounds like a classic case of a 'gassy' (grid emission) tube. Replace it!
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line
and TR-4/C Service Supplement CDs
Randy WB4SPB wrote:
Hi folks,
I've owned my beloved R4B since the mid-70's. From about 1985 until 200
ginal Message-
From: Richard Knoppow <1oldle...@ix.netcom.com>
To: Randy WB4SPB ; drakelist
Sent: Fri, Feb 10, 2012 12:27 am
Subject: Re: [Drakelist] R4B audio distortion
A look at the schematic indicates that you have hit all
the usual suspects. So, what else could cause
-
From: Richard Knoppow <1oldle...@ix.netcom.com>
To: Randy WB4SPB ; drakelist
Sent: Fri, Feb 10, 2012 12:27 am
Subject: Re: [Drakelist] R4B audio distortion
A look at the schematic indicates that you have hit all
the usual suspects. So, what else could cause the control
grid voltage
ebruary 09, 2012 8:53 PM
Subject: [Drakelist] R4B audio distortion
Hi folks,
I've owned my beloved R4B since the mid-70's. From about
1985 until 2000,
it was stored while I got busy with job/family. I used it
again for several
months in 2002 and 2003, and I didn't notice any
Hi folks,
I've owned my beloved R4B since the mid-70's. From about 1985 until 2000,
it was stored while I got busy with job/family. I used it again for several
months in 2002 and 2003, and I didn't notice anything unusual. Now I am
active again and want to use it full time, but I am hearing au
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