Is that mod online somewhere? I'd like to see it. Thanks, Barry - N4BUQ
On Thu, Oct 10, 2024 at 5:20 AM Larry Haney <[email protected]> wrote: > > Hi again Barry, You need a little more information about the twinax balanced > ant connector mod. Usually the antenna relay is disabled inside. This is > due to the construction of the original relay - some of the relay contacts > are supported and connected directly to the contacts on the original female > twinax connector that was removed. This normally disables the relay from > functioning, This may not be a problem for you, but you should know how it is > working. Repairing the relay once modified like this is nearly impossible. > > Regards, Larry > > On Wed, Oct 9, 2024 at 11:53 PM Larry Haney <[email protected]> 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 <[email protected]> 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 <[email protected]> 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 <[email protected]> >>> > 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 >>> >> ______________________________________________________________ >>> >> R-390 mailing list >>> >> Home: http://mailman.qth.net/mailman/listinfo/r-390 >>> >> Help: http://mailman.qth.net/mmfaq.htm >>> >> Post: mailto:[email protected] >>> >> >>> >> This list hosted by: http://www.qsl.net >>> >> Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ R-390 mailing list Home: http://mailman.qth.net/mailman/listinfo/r-390 Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
