[R-390] That's more like it!!!

Wed, 28 Jan 2004 09:40:58 -0500

I'm with you on the antenna connector.  That's what someone did to this
R-390A.  BTW the unbalanced connector is a Type C, I believe, so an adapter
can be obtained pretty easily if you don't want to remove the connector.

Dave WB4FUR

-----Original Message-----
From: [email protected] [mailto:[email protected]]On
Behalf Of K3PID
Sent: Sunday, January 25, 2004 7:43 PM
To: [email protected]
Subject: [R-390] That's more like it!!!

Well I guess I am getting through...:>). Anyway the two questions were as
follows:

First. ( I now realize that this may not have come across as a question. I
was looking for confirmation of my assumptions)

SIDETONE QUESTION 1/3/2004

The sidetone output of the T-368 is taken through a cap from the wiper of
the 500 Ohm cathode resistor of the cathode follower. Is it normally
connected across the "output" side of the 600 Ohm audio output of the R-390?
If so then the level of the sidetone is controlled by the cathode resistor
independ from the R-390?

Second.

ANTENNA INPUT MODIFICATIONS 1/23/2004

On my R-390 someone removed the twinaxial socket on the balanced input and
replaced it with an SO-239. The center conductor of the new connector passes
thru to the high side of the transformer while the other side is now
grounded. Was this a common mod? why wouldn't you just replace the connector
on the unbalanced input with the SO-239?

Thanks and sorry if I shouted!! In the past I've gotten great answers from
the group but it seemed like no one was listening... You know how it is when
you have the rig open on the bench and you're waiting for info...

K3PID

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