Charles -
Vary simple, no equipment needed.
Connect a clip lead to the receiver antenna. Set the AVC to FAST. Drag
the other end of the clip lead along a metal surface, the chassis of the
receiver works fine, or anything grounded and uninsulated.
The S Meter will jump all over the place with the noise.
Switch on the NB, and the noise is greatly diminished and the S-Meter
will just lay on S-1 or S-2.
You'll know if it's working.
They are often out of alignment but is simple to do with a VTVM.
--
73, Garey - K4OAH
St Charles, IL
Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line
and TR-4/C Service Supplement CDs
<www.k4oah.com>
Charles Ring wrote:
I suspect the noise blanker in my R-4C is not working. How can I
definitively test it?
73 de W3NU
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