OK, pretty sure I found them... there was a reference on a Cayenne board... you can order connectors from www.crutchfield.com

Link to website

The ones you want are Euro Antenna Adaptor #12040EU20 and #12040EU10. They're $20 a piece.

I think the actual connectors are MCX connectors, which you can get for about $5 a piece, so if you want to save $30, that might be the way to go.