Hi look at the sma-uhf so-230 uhf kit on Amazon to see if this is what you need. SMA-UHF RF PL250 SO239 adapter around $7.68.
Just in case you may want to connect to SW Receiver the Eightwood UHA also on Amazon for about $8.49 Female so 239 to 3.5 mono 1/8 antenna which goes into the antenna slot on receiver.
Hope this helps.