Robin
If you PM me I can send you a copy.
Incidently back in the 60s I used to live about 8 miles from Droitwich and with 100ft of wire as an aerial and a good earth I could get about 1v dc out of a crystal set tuned to 200kc/s (before Hertz came in).
I also visited the transmitter with the radio club from school. The LW transmitter comprised two 200kW transmitters in parallel ( A single output valve in each transmitter with 14kv HT at 14A anode current). The engineer showing us round said that when they wanted to do maintainance on one of the transmitters they just switched it off. I asked don't you lose some listeners? He replied "only a few fringe area listeners and we're not too bothered about them
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Keith