[R-390] Balanced Antenna Connector

[Larry Haney]

Hi Barry,  Attached is a pic showing the 3 sections to the connector.  The
coax center conductor would be stripped about 3/4" and inserted into 1 of
the 2 pins on the left section and soldered on the end.  The coax shield
connects to the center section and to the other pin in the left section.

Regards, Larry

On Fri, Oct 11, 2024 at 9:30 AM Barry Scott <72volkswagon at gmail.com> wrote:

> Regarding those connectors (ug-102, pl-284, Amphenol 83-22sp and
> 83-821), I'm not finding a picture or drawing of those that shows how
> the cable connects to the pins.  A picture of the inside (back) of the
> part of the connector where the pins project from the front would be
> helpful but a description might work as well.  I'd like to make sure
> how these are connected to the cable before ordering one.
>
> Thanks,
> Barry - N4BUQ
>
> On Thu, Oct 10, 2024 at 1:53 AM Larry Haney <larry41gm2 at gmail.com> wrote:
> >
> > Hi Barry,  The connector in your picture is the old original twinax
> connector.  Somebody modified your 390 and changed the new twinax to it.
> It was used on the early sp-600s.  The male plug is available online and is
> known by the name ug-102, pl-284, Amphenol 83-22sp and 83-821.  Sorry I
> don't have any at the moment.
> >
> > Regards, Larry
> >
> > On Wed, Oct 9, 2024 at 2:00 PM Barry Scott <72volkswagon at gmail.com>
> wrote:
> >>
> >> Hi Larry,
> >>
> >> Those are the standard twin-ax connectors ("IBM"?).  I have one of
> >> those but this connector is different.  See the pictures below.  Those
> >> sockets appear to take a pin that's about 0.090" in diameter.  I just
> >> don't recognize it.
> >>
> >> Thanks,
> >> Barry - N4BUQ
> >>
> >> On Wed, Oct 9, 2024 at 3:04 PM Larry Haney <larry41gm2 at gmail.com>
> wrote:
> >> >
> >> > Hi Barry,  There are many manufacturers making the twinax male
> straight plug today for the balanced jack on the 390s.  There's Pasternack
> PE4104, PE-S330; ARC - 8-299, AMPHENOL - 82-5589-RFX, 162100; SPC
> Technology / SAMAR - SPC21084; Connex 162100; Pan Pacific TWX-3501; Aim
> Cambridge 27-9087, AIM 27-9080; AVA 403000 and others.
> >> >
> >> > If anyone would like one, I'll sell them an AVA 403000 for $3 +
> postage.
> >> >
> >> > Regards, Larry
> >> >
> >> > On Wed, Oct 9, 2024 at 11:21 AM Barry Scott <72volkswagon at gmail.com>
> wrote:
> >> >>
> >> >> What is the correct designation for the two-pin antenna connector
> >> >> (balanced) in the R-390/URR (likely the same for the R-390A/URR but I
> >> >> want to be specific just in case).
> >> >>
> >> >> Also, I think Chuck Rippel had a connection contraption that used a
> >> >> resistor (or two) so that 50-ohm unbalanced would match just a bit
> >> >> better using the balanced connection.  He had a website that depicted
> >> >> that but I don't know if that still exists.  Anyone know?
> >> >>
> >> >> Thanks,
> >> >> Barry - N4BUQ
> >> >> ______________________________________________________________
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