Hello All,

Was there ever an RAF Great Baddow, nr Chelmsford? This was the WW2 home of the Inter-Service Ionospheric Research Station housed in the old Marconi Research Labs.

If so, did it render any ORBs? If not, was it likely that any RAF personnel there would have been on Detachment from one of Communications/Electronic Group HQs?

I am looking for any information/reports on WW2 H/F frequency forecasting as seen from the research end, rather than the RAF airborne wireless operatorís end! TNA is not very forthcoming!

Peter Davies