Re: [IRCA] connector problem?

["Craig Healy" <ng1u@xxxxxxxxxx>]

Looks like my "Bubba" account is down for maintenance, so I'll run off this
one..

It may be that the antenna connectors are soldered right to the printed
circuit board.  The constant movement of the connectors eventually breaks
the solder connection, and you end up with the intermittent you've
described.  Fortunately the fix is most times easy.  Unplug the equipment
and open the case, and simply resolder it.

If you make up a small jumper and attach your antenna to that, it may extend
the life considerably.

The Kiwa loop uses a small internal wire jumper, so it won't be a problem
with that.

Speaking of the Kiwa loop...  Anyone have a schematic for this?  I have one
on the bench to repair, and could use the value of the resistor in the back
under the Attenuator control.  It's the one closest to the back mounting
screw near the coax connectors.  The one I have to fix is burnt beyond
recognition.

Craig Healy
Providence, RI

----- Original Message ----- 
From: "Eric Floden" <eric.f99999@xxxxxxxxx>
To: "Mailing list for the International Radio Club of America"
<irca@xxxxxxxxxxxxxxxx>
Sent: Saturday, May 13, 2006 1:15 PM
Subject: [IRCA] connector problem?


greetings,

my AOR 7030+ is linked to my Kiwa loop via MFJ antenna switch (MFJ 1700B),
all using large screw-on connectors that the AOR manual refers to as
SO-239.  I have had this in place for several years now, relatively
stationery, though I have taken it apart on a few occasions.  I have noticed
of late that at least one of the connectors seems to conduct poorly; that
is, by moving the wire or screwing/un- the connection, I can find a position
that maies it conduct better.  That is, the signal will improve.

It seems that the cable(s) in question are intermittent.  Is this usual?
Is there a finite lifespan for these cables/connectors?  Is there
maintenance that can be done to extend their lives?

The local store I bought them from has closed and I have no idea where to
get these now, so routine replacement will take more effort

comments appreciated

ef
Vancouver

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