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Re: [TowerTalk] PL259 Insertion Loss?

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Subject: Re: [TowerTalk] PL259 Insertion Loss?
From: "Peter Voelpel" <>
Date: Mon, 16 Jan 2012 17:34:01 +0100
List-post: <">>
TLDetails calculates additional 0.77db loss with 150 Ohm at the feed point
and 0.8db at 16.67 Ohm with your example.

With Belden 8262 of the same length the program shows additional losses of

Peter, DJ7WW

-----Original Message-----
From: [mailto:towertalk- And since we're
talking numbers, consider this one -- the WORST CASE 
additional loss due to a 1.5:1 mismatch (measured at the antenna) is 
0.18dB, no matter how long the line or how much the matched loss, and 
for lines with low loss the additional loss is even smaller. Using that 
previously cited family of plotted curves in the ARRL Handbook for your 
28 MHz example, a 2 dB matched loss (about of 300 ft of LMR400 at 28 
MHz) would be increased by only 0.1dB by a 1.5:1 mismatch.


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