Hi Guys I saw David at the weekend at a Microwave event If you cant find the gen drop him an email at G0MRF(at)aol(dot)com. There has been some updating information due to Jim Moritz M0BMU on the RSGB reflector. I am sure that is on a web site somewhere. Gary G3WGT certainly has it, so it may be on his site. Alan G3NYK