[Top] [All Lists]

Re: [TowerTalk] RE: [Antennas] loax 'sweet lenght'

To: <>, <>, <>,<>
Subject: Re: [TowerTalk] RE: [Antennas] loax 'sweet lenght'
From: "Tom Rauch" <>
Reply-to: Tom Rauch <>
Date: Mon, 11 Oct 2004 14:33:56 -0400
List-post: <>
>> Wrong, if there is a mismatch at the antenna you can get
reactance along
>> the line that varies in sign and magnitude.

> Wrong!  If there is no reactance at the antenna, there
will indeed be no
> reactance at the transmitter end regardless of line
> Jim W9TM

Actually there is a reactance change along length when a
line is mismatched. If there was no reactance change, there
would be no impedance transformation.

I can think of special situations that have exceptions, but
in the general case where a line of some certain
characteristic impedance is misterminated with a pure
resistance reactance changes along the length, peaking at
odd-1/8th wave intervals and crossing zero at any multiple
of 1/4 wl.

73 Tom


See:  for "Self Supporting Towers", "Wireless Weather 
Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with any questions 
and ask for Sherman, W2FLA.

TowerTalk mailing list

<Prev in Thread] Current Thread [Next in Thread>