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[AMPS] Re: Antenna System power ratings

To: <amps@contesting.com>
Subject: [AMPS] Re: Antenna System power ratings
From: jono@enteract.com (Jon Ogden)
Date: Tue, 20 Oct 98 09:09:15 -0000
>My feeling is that a PL259 should be good to 3Kw in low SWR system - say
><2:1. Although the Type N is rated to 1 Kw, I feel unhappy about putting
>over 4 amps through what is a BNC as far as the inside is concerned. 

Agreed on the N-connectors.  I would think that a PL-259 would have a 
higher power rating than the N due to the thickness of the conductor.  
The center conductor of the N is really quite small and is really a BNC 
as you say.

I know of a company I used to call on who makes paging transmitters.  
They had a lot of N connectors in their system that they would run at 500 
Watts at 900 MHz.  One of the engineers told me they burned up a LOT of N 
connectors literally and that it was one of the major field issues.  They 
had a bunch of Ns in their system as "blind-mate" connectors (push on - 
so they could slide modules in and out of racks. Customers don't want to 
"screw" on cables).  They redesigned the system to use the 7/16 DIN 
connectors and eliminated all of the Ns in the high power areas.

I've also heard of hams burning up N's at 1500 Watts on UHF frequencies.

IMHO, it's an overated connector power wise.

73,

Jon
KE9NA

--------------------------------------------------------------------------
Jon Ogden

jono@enteract.com
www.qsl.net/ke9na

"A life lived in fear is a life half lived."


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