Dale,
While you could put a bias Tee in each side of the balanced line to make
it work, you need to be aware of the impedance at the points in the
feedline where the DC is taken off. The isolating inductance should
have 5 time (or greater) impedance at all frequencies of interest.
I assume you are running a multiband antenna, so it may be easier and
simpler just to 'bite the bullet' and run separate wire for the relay
control.
73,
Don W3FPR
On 2/11/2014 7:23 PM, Dale Putnam wrote:
With a pair of KAT100s and a pair of K2s, I need to send 12v up the openline feeder to
control a latching relay at the top of the tower. The easiest way would be to run the dc
on the feedline.and it would be even easier.. if the isolator would stop the dc from
continuing on through the antenna.. that is also a dc short, inone of its configurations.
I can insert the dc in the shack.. with a coax "T"... but there isn't a coax
place at the top of the tower.Thoughts or ideas?
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