What are you using for a signal generator? Some generators leak a lot of
signal and might have more than .35 uV of signal radiated on the outside of the
coax. When you break the shield path, this higher signal level might get to
the radio.
Another post mentioned that the RCA connector uses a short pin. I use a BNC to
RCA connector with the center pin cut back to match the radio internal
connectors to avoid problems in this area.
734 - Jim W5ZIT
--- On Thu, 5/28/09, wb8art <wb8...@netzero.net> wrote:
From: wb8art <wb8...@netzero.net>
Subject: [Repeater-Builder] Exec II input problem
To: Repeater-Builder@yahoogroups.com
Date: Thursday, May 28, 2009, 4:02 PM
Wonder if anyone has had this problem and know what the problem is.
I am working on a GE Exec II repeater (converted mobile) which has no Comb no.
I any case the issue is that if I move around the cable feeding it with a
generator I was seeing a change in the recieve.
I went directly to the RCA jack, and then found that just making
connection with the center pin, I have about 10 to 20db stronger recieved
signal than when I push it all the way in making the ground connection.
This is a mobile and the RF deck is no. is 19D417075G14 rev A covered by
LBI30032E. This shows a option of either non floating ground or floating ground
input. This one is a non floating ground one. Might have been changed but I
have know knowledge of its history.
The RCA jack center pin connects directly with a wire thru a hole to the
first helical and I have looked and can see no connection issues and measures a
short with an ohm meter. I even reheated the solder joints and no change.
Anythoughts would be appreciated.
Randy
