The audio amp in the stock R-4C is already solid state. The Sherwood mod for
the audio amp does make it sound better and removes the big heat source right
below the PTO. That is the only Sherwood mod I made, but I'm considering the
power supply mod. I also installed the Hayseed Hamfest cap cans.
73,
Bob WW3QB
________________________________
The R-4C (stock) is hardly a true vacuum tube radio...very much a hybrid.
Even the R-4B has quite a few transisters.
Early R-4a...= tube RX...and I'm looking to get one of those some day (Dayton??)
73,
Lee
-----Original Message-----
From: Adrian <svi...@blably.com>
To: John Brown <brown...@optusnet.com.au>
Cc: drakelist <drakelist@zerobeat.net>
Sent: Sat, Dec 31, 2011 6:50 am
Subject: Re: [Drakelist] R4C Sherwood mods
A vacuum tube-born radio with loads of solid state mods ?
Sorry but then isn't a vacuum made receiver,transmitter, twin line ( etc )
anymore.
The FUN about those "boathanchors" is "use it as it is". If i wanna something
improved...ill buy a new product.
At my side, the challenging while using old stuff is fun, fun and fun. The
battle against big, closed, splatters while you have to fight with the passband
tuning AND rf gain...etc etc.
It's like to drive a Jaguar, but with a (eg) Bentley engine inside. Do we can
call that car a Jaguar ? I don't think so.
So, at my side, a Drake product, with plenty of solid state things
inside...isn't a Drake anymore.
Obv it's only my opinion.
'73 de Adrian iz3svi
On Sat, 31 Dec 2011 12:06:30 +1100, "John Brown" <brown...@optusnet.com.au>
wrote:
Max, if you are inclined towards doing all of the R-4C Sherwood mods on your
receiver then I would say it would be well worthwhile. The complete mods really
puts the R4-C ahead of the pack. I have done 2 R4C’s this way and wouldn’t
hesitate to do them again.
In terms of individual mods, then the power supply is a must and perhaps the
filter capacitors at the same time. The audio module gets rid of the class A
audio amp which is a heat generator and source of PTO drift. I believe you
would need to do the audio mod if the power supply is upgraded. So once you
start you might as well keep going.
Best of luck
JB
From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net] On
Behalf Of AirRadio
Sent: Saturday, 31 December 2011 8:28 AM
To: drakelist@zerobeat.net
Subject: [Drakelist] R4C Sherwood mods
I am thinking about doing the full works Sherwood mods on my R4-C. Which are
the best to do? I don't mind how far I go with this, I just want the best
receiver for my money, I would like it for Top band use but I know it will be
good for all frequencies however 160M is where I want to go.
73 Max
M0GHQ/W8BX
_______________________________________________
Drakelist mailing list
Drakelist@zerobeat.net
http://mailman.zerobeat.net/mailman/listinfo/drakelist
_______________________________________________
Drakelist mailing list
Drakelist@zerobeat.net
http://mailman.zerobeat.net/mailman/listinfo/drakelist
_______________________________________________
Drakelist mailing list
Drakelist@zerobeat.net
http://mailman.zerobeat.net/mailman/listinfo/drakelist
