Well, you learn something every day. But I 'spect my first Elmer, Old Hardman,
would have a good belly laugh about twisting the line to keep it balanced. Back
in '47 we were told that the two halves of a doublet antenna could not be
exactly identical in length and siting so doublets were inherently unbalanced.
And of course, since the load must be unbalanced the transmission must also be
unbalanced.
According to then established doctrine, open wire line, and later TV twinlead,
was to be twisted to reduce automobile ignition noise and other impulse noise
pickup. Radio Craft had a big illustrated writeup showing Kukla, Fran, and
Ollie eaten up with ignition noise that went away when the twinlead was twisted
at a one turn in three feet rate.
Of ocurse, at that time the closest TV station was in Chicago so that didn't
make much of an impression on us. Later, when the idiot boxes became common I
found twisting the line sometimes made a difference - but not when the source
of the noise was close to the transmission line.
73 Pete Allen AC5E
--
Never squat with your spurs on
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