Garey,
Yep, I'm still up and working on this baby...
OK, one other thing I found:
Resistance checks at V7:
Pin 6 slowly goes up to 4.8K instead of being 15K like the book says
Pin 7 slowly goes up to 4.6K...pretty close to the book
I have checked a lot of resisters in both the atrea of Q7 & V7 all look
pretty good.
73,
Lee
-----Original Message-----
From: Garey Barrell <[email protected]>
To: drakelist <[email protected]>
Sent: Fri, Apr 1, 2011 9:36 pm
Subject: Re: [Drakelist] Fwd: My R-4B audio?
Lee -
The output transformer is a 2500 to 4 ohm. Probably any small, single
tube output transformer will work. The primary current is about 40 mA.
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
<www.k4oah.com>
[email protected] wrote:
BIG UPDATE,
I just discovered someone has changed the audio output XFMR!
I can tell because they left a small piece of the original secondary
wire on the phone jack terminal wher it connects...it is the cloth
covered wire.
Hmmmm.
who know what it is, if it is correct.......
Wander if I can find one???
Anyone have one I can buy?
That may not even be the issue...if I knwe what the input signal level
was supposed to be that would help.
73,
Lee
[email protected]
http://mailman.zerobeat.net/mailman/listinfo/drakelist
_______________________________________________
Drakelist mailing list
[email protected]
http://mailman.zerobeat.net/mailman/listinfo/drakelist
_______________________________________________
Drakelist mailing list
[email protected]
http://mailman.zerobeat.net/mailman/listinfo/drakelist
