[Icom] IC- 706 MK IIG Antenna Connector Problem

Sat, 05 Oct 2002 17:52:01 -0400

Hi Dave,

Well, I just did an experiment. There was a station reading a 5 or 6 signal 
strength and when I turned the shield as far as it can go,  both the noise 
level and station disappeared. I heard absolutely nothing -- almost like a 
squelch was on. So the only way I could copy the station is to have the 
shield partially connected to the SO-239.

I'm using a homebred 20 meter dipole fed by coax. The frequency was 14.240.

Do you think it's safe to transmit with the shield only partially connected?

73,

Dennis KA3QOT

At 02:23 PM 10/5/2002 -0700, you wrote:
>What happens when you're listing to a station when you do your test? The
>same thing happens on my rig(s), but I find that all that's happening is I'm
>picking up more static without the shield connected. Tune in a QSO and see
>what happens when you disconnect the shield.
>
>Also, what frequency and antenna are you using?
>
>73,
>-- Dave, WA0TTN
>
> > -----Original Message-----
> > From: [email protected] [mailto:[email protected]]On
> > Behalf Of Dennis DeMarco
> > Sent: Saturday, October 05, 2002 2:00 PM
> > To: [email protected]
> > Subject: [Icom] IC- 706 MK IIG Antenna Connector Problem
> >
> >
> > Hello All,
> >
> > I have a new (less than three months old) IC-706 MK IIG. When
> > I attach a
> > new Radio Shack PL-259 cable (with crimped connectors) from
> > my SWR meter to
> > the SO-239 on the back of the rig, as soon as I insert the
> > center piece and
> > start screwing on the shield, the signal drops appreciably
> > and I can barely
> > hear anything at all. As soon as I loosen the shield and
> > barely have it
> > connected to the rig, the signal reappears at the proper
> > volume. The cable
> > has no shorts.
> >
> > When I tried an older cable with soldered-on connectors, the
> > signal stays
> > loud until the very last turn of the shield when the signal
> > drops similarly
> > to the new cable which has crimped connectors. It has no
> > shorts as well.
> >
> > Any ideas on what may be causing this?  One guess is that the
> > center pin of
> > the connectors may not be thick enough when making the
> > connection. Could
> > the SO-239 be bad? Is it safe to operate with the shield not fully
> > connected? I have a low SWR with it < 1.25:1.
> >
> > 73,
> >
> > Dennis KA3QOT
> >
> >
> > ----
> > Your Moderator: Dick Flanagan W6OLD, [email protected]
> > Icom FAQ: http://www.qsl.net/icom/
> >
>
>----
>Your Moderator: Dick Flanagan W6OLD, [email protected]
>Icom FAQ: http://www.qsl.net/icom/