[Antennas] inverted L question

2002年9月11日 20:43:30 -0500

An inverted L is usually a 1/4wave bent into an L shape...
sooo if you have it resonant on 160, chances are its 135 ft or so
in overall length and a 1/4wl on 160...making it a 1/2wl on 80
and VERY high Z on the feedpoint...
You COULD use a relay to open half of the antenna length to make
it a 1/4wl on 80....OR you could use a LC network to match it to
the feedline on 80...and merely have the relay bypass that on 160.
Chris
WB5ITT
FireBrick wrote:
>> I want to use my Inverted L on 160 and also 80.
> It seems to be quite resonant on 160 as it is.
> But 80 requires a tuner.
>> So if I run one short piece of coax out the wall the 4 feet to the antenna
> base and use it with a coax switch for 160...
> can I...
> put another piece of coax on the switch and connect that to a coil/cap
> matching unit?
> The two coaxes, one direct and other to antenna base matching system would
> be in parallel.
>> This way I wouldn't have to go outside to switch clip leads.