What are you trying to tell us Neil?  There have been a lot of discussions on here about RTK base stations and NTRIP setups.  The u-blox ZED-F9P has really created some opportunities for people.  I'm playing around with one myself from Sparkfun.  I'm considering getting a Mosiac X5 as well as it has more RTCM message options that I think might make it easier to use with Trimble.