Re: Simple signal transmission using long steel pipe

sorry for the delay in replying - this is my first chance to check the
group. The steel pipe is one continuous length of 2" diameter with a
bore of 1-1/2" and will usually contain sea-water. There are no
supports required as the pipe is suspended (almost) vertically in a
well-bore. Sending pressure pulses is a possiblity but oe Legris's idea
of transmitting a sound wave is interesting.

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