[R-390] Balances Antenna Connector

[Tom Frobase]

Here is a link to some 4:1 Baluns.  I use them to make Balance antenna
adaptors.  The 4 side to the two twinax pins, the 1 side to a BNC input.  I
drill out the back of the Twinax Connector to fit a 3/8" chassis mount BNC
socket.  I fasten it in place with a small allen set screw.  The Baun is
glued insideThey work very well.

https://www.ebay.com/itm/265016480357

 ... tom, N3LLL