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Re: [A/S] TV Antenna
Don,
Your original antenna is a Braund Skyliner. It is a collapsible version of a
home antenna. In an addition to the signal collected by the antenna there is
a TV signal amplifier at the point you plug in the antenna lead to your TV.
They are connected through the wall using a high grade of wire referred to as
300 ohm lead. Meaning the wire has a predictable resistance per foot.
The current single wing style is made by Winegard. It works as a very simple
signal collector with an amplifier mounted in the head of the antenna. The TV
connection point inside is not an amplifier, rather it is a power supply that
feeds 12V up to the amplifier in the head and splits the TV signal off the
same wire to feed to the TV. In order to get a decent signal the power supply
switch must be on. The antenna kit includes 75 ohm coax cable to connect the
antenna and power supply.
Had these two been installed at the same time the signal from the Braund
would be better and under many circumstances could be used without turning on
the amplifier.
The challenge will be to replace both the antenna and the inside unit and
connect them together. The existing 300 ohm wire is anchored in the walls and
can not be easily replace. The radio antenna feed is done at a junction in
the wall behind the power supply and is also 300 ohm wire.
Suggestion to consider: Refurbish the Braund antenna and replace the exposed
300 ohm wire exposed on the roof. The point were the 300 ohm wire enters the
roof is typically a small square plate that is screwed or riveted in to place
and heavily sealed with Vulkem. One can clean up and open up the entry point,
replace the wire and put it all back together. In the event you can't find 300
ohm wire, a length of 75 ohm with two transformers also does the job. One
transformer at the antenna and the second sealed in the roof
Charlie