Wa9jml, about 35 years ago I worked in a Sperry Systems Management plant/facility on North Church Street in Huntsville. A couple of blocks away was the WAAY-AM/FM radio station and tower, what they called a "50,000 watt transmitter". At least one of the electrical/radio engineers there told me they "had to put a wave guide" down the hallway alongside the laser lab on account of stray "voltages and currents" they could detect. Odd? Guess so.

In that plant we also had a .50-cal simulator project set up on the North parking lot. The simulator used some kind of explosive gas mixture (acetylene/O2?) to mimic the sound of a .50-cal firing.

At the same time, the Madison County Sheriff's Office was directly to the West of our North parking lot. The outcome was that, the first time our simulator did its rather impressive thing, in the direction of the Sheriff's offices, there was a rather rapid response from that office, and quickly.

I don't know that anyone went to jail that day. I do know that I heard the simulated shots and the sirens.

I also know that Spa Babunovich (who served in WWII in the Yugoslavian resistance and was apparently a very good sniper, also famous for answering Dick Buschs's question, "Spa, what did you do in the War?" with "I killed Germans." I'd guess that Spa also knew that Busch was a tank commander in the Wermacht on the Eastern Front...)

Such FUN!

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TANSTAAFL