I need something like this

http://www.avshop.com/catalog/product.html?productid=4269

Actually, exactly like that.  Avshop is out.  Know of anywhere else I can get one?  I am panel mounting a Trafficscope VRX and need an extension.  Not sure if any coax extension should work or not.  Even if it will, I need to know where to get one.  Thanks.

Steve Reeves
Glasair 343ND