Topband
[Top] [All Lists]

Re: Topband: 1/4 wave 160M wire antenna

To: topband@contesting.com
Subject: Re: Topband: 1/4 wave 160M wire antenna
From: Jim Brown <jim@audiosystemsgroup.com>
Reply-to: jim@audiosystemsgroup.com
Date: Thu, 18 Dec 2025 15:39:00 -0800
List-post: <mailto:topband@contesting.com>
On 12/18/2025 12:48 PM, Joe Subich, W4TV wrote:
SWR is not minimum at zero reactance ... it is minimum where the
vector impedance ( (R^2 + jX^2)^.5 ) is closest to 50 Ohms (in equipment
calibrated to 50 Ohms).

SWR is established by the match of the antenna to the transmission line, NOT to the transmitter, and it that match to the antenna that determines loss in the line. Thanks to loss in the line, a MEASUREMENT of SWR at the transmitter will yield a lower value.

73, Jim K9YC



_________________
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

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