WTB: Radio Aerial Cable

[RET]

Hopefully someone can help me.  I'm after an aerial cable to connect my original-style aerial to my FE Air-Chief Radio.  I've spoke to Nostalgic Wireless, who weren't able to assist, and couldn't suggest where I might be able to buy one.  They replace the socket on the radio and use a modern aerial when they do their restorations on these radios. So I'm now looking for a second-hand unit if necessary.

The aerial end is female, with a connector like a CB aerial cable with the long lug cut off.  The radio end is male, and is the size of a seat-belt bolt (in terms of thread size and diameter - a seat-belt bolt actually screws into the fitting OK.)

Appreciate any assistance with a new or second-hand unit that forum members can provide.

cheers
RET