[R-390] Balanced Antenna Connector

[Barry]

That may very well be what I'm thinking of.  This is what I remember doing for one of my R-390As.  I think winding a toroidal transformer may work better.  I used to have a box that connected to the balanced jack and had a BNC connector for the unbalanced coax line to the antenna.  I think it wasn't an exact match - something like 65 ohms - but it worked.  I don't think I'd be able to use it, though, with this jack.  I'm still unsure what it is.

Thanks,
Barry - N4BUQ

> I am aware of a cap/resistor combo Chuck recommended for outputting the diode
> load to an outboard preamp/amp combination. Perhaps that was what you’re
> thinking of?
> 
> 
> 
> Dan - WB4GRA
> 
> 
> 
> 
> Sent from my iPhone
> 
>> On Oct 9, 2024, at 2:25 PM, 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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