[Boom]

I've been up to Battlesbury Hill a few times now Caroline hunting. Even when I can't hear Caroline at home each time I have gone to the hill which is only some three miles away from me I have been met with a good solid signal at all times of day and night. (Battlesbury Hill is on Salisbury Plain next to the garrison). This works out at some 185 miles from the Caroline transmitter and I assume the signal must be arriving via ground wave. Some ground wave! The ASL is about 500 feet.

There is another hill next to it - Cradle Hill - famous for its UFO activities. This hill has just one telephone cable running the full length of the hill on poles carrying the comms' signals for the entire tower and carries data hash which totally wipes out the whole medium wave.