Doh...!!   Of course..the simplest common denominator..  ;)

Curt
KU8L


Garey Barrell wrote:
Mike -

The R-4A has the Noise Blanker and Calibrator standard. I suspect that your problem is that you need a shorted RCA phono plug inserted into the MUTE jack on the rear panel. Without this plug, the receiver is muted in the EXT MUTE, NB and CAL positions.

73, Garey - K4OAH
Glen Allen, VA

Drake 2-B, 2-C/2-NT, 4-B, C-Line&
TR-4/C Service Supplement CDs
<www.k4oah.com>


Michael Harden wrote:

First time user. Long time reader.

I am new to ham radio repair and lack a lot on knowledge. I have a R-4A that seems to work well an receive, but lacks any noise blanker or calibrator. Hope you can lead the blind and help me.

Mike

KD0ACY



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