Hi E14, the socket on the RB is SMA, the co-ax is RG174. Garex will supply patch leads
http://www.garex.co.uk/patch%20leads/patch%20leads.htm my personal choice is to go for 300mm or 450mm rather than the 6"/150mm they refer to. I've just had a Watson Radar Extender antenna arrive, it is very well made and finished, with N-type femal connector. It will be a couple of weeks before I get the chance to have a play with it, so can't yet comment on performance.
