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Re: [TowerTalk] Triplexer

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Triplexer
From: "john@kk9a.com" <john@kk9a.com>
Date: Tue, 19 Apr 2016 10:36:52 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
A single op can only transmit one signal at a time so the combined wattage
would only be an issue for multi-ops. This is a good question, can the
triplexer could handle three H.P. stations on simultaneously.

Many contest stations have multiple tribanders pointing in different
directions. For maximum flexibility you may need a triplexer on each beam?

John KK9A


To:     <towertalk@contesting.com>
Subject:        [TowerTalk] Triplexer
From:   "Jim Thomson" <jim.thom@telus.net>
Date:   Tue, 19 Apr 2016 06:19:38 -0700




&&&  No, what I meant was say 3 amps, all running 1.5 kw RTTY..
simultaneously
= 4.5 kw average power.   Per Eimac, that would be the same as a 3 tone
signal,
with each tone having an average power of 1.5 kw.
(Number of tones) squared,  X 1.5 kw  =    13.5 kw pep out.
13.5 kw pep out =  825V rms = 1166 V peak.

&&&  4.5 kw average, would be max worse case.  Still, on CW,  with all
3 on TX, it would still be aprx 2 ? 2.25 kw average.  So it may still work.

&&&  The other issue would be the tribander would be pointed in 1 direction,
so all  3 bands would also be in one direction, which may not be what you
want.
But folks with rotating towers face the same dilemma.

Jim   VE7RF

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