The last TR-4 and all the TR-4C versions had the socket for the 34-PNB.
The earlier TR-4 versions used the 34-NB wired-in style of the NB.
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 4-B, C-Line & TR-4/C Service Supplement CDs
<www.k4oah.com>
Sain'T Tom wrote:
*Is the 34-PNB made for just the TR-4, or the TR-4 and all of the
TR-4C series as well?*
----- Original Message -----
*From:* Gary Poland <mailto:[email protected]>
*To:* Drakelist <mailto:[email protected]>
*Sent:* Thursday, October 08, 2009 13:41
*Subject:* Re: [Drakelist] TR-4 Noise Blanker question
There are a few different PCB layouts for the 34-PNB. One has the
old brown phenolic material and there are at least 2 versions of
the green fiberglass boards.
73, Gary
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