jimbo wrote:
Thanks for the replies. The ladder line would be used when the other
lines were not being used. Does the proximity of other unpowered lines
affect the ladder line operation for receive and transmit?

Especially transmit. You will lose a lot of your transmitted
power to the conductors surrounding the ladder-line. Ladder-
line should be run a few inches away from anything.
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73, Cecil http://www.qsl.net/w5dxp