I am an amateur photographer. Last weekend I set up in the corner of a
gymnasium to take some portraits. I use multiple "strobe" flash units for
lighting. For the past 4 or 5 years I have been using small RF triggers to
fire the flash units. They are small, cheap, 16 channel Chinese units made
by Neewer. My camera is a Canon 60D. These units have, until now, worked
flawlessly.

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Sunday afternoon, with everything set up, I pressed the test button on the
transmitter to take a flash meter reading. Nothing happened. Not one of the
three flash units fired. Since none fired, I suspected the transmitter. The
lights worked fine but I put a new battery in anyway. No effect. After what
seemed like an eternity of frustration I realized the only other thing in
the room was a dehumidifier. It was running on the other side of the room,
at least 50 feet away. It didn't seem possible that that could jam the
signal but I turned it off anyway. Immediately, everything worked perfectly=
..

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I have a very similar, but older, 3 gallon Whirlpool dehumidifier in my
basement which has no effect whatever on these radios. I have been playing
with electricity for more than 50 years and even studied some EE in college
but I can't see how a simple motor could so completely jam these radios fro=
m
such a distance. Perhaps it used the power line as a radiator. I don't know=
..
Any ideas?

=20

Allen

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