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Re: [TowerTalk] How many connectors?

To: "towertalk@contesting.com" <towertalk@contesting.com>
Subject: Re: [TowerTalk] How many connectors?
From: Grant Saviers <grants2@pacbell.net>
Date: Tue, 30 Oct 2018 07:52:23 -0700
List-post: <mailto:towertalk@contesting.com>
"A db here and a db there and pretty soon you lose 3db"  to paraphrase Everett Dirksen for those old enough to remember.  I built a spread sheet of cable loss by band, amp out to antenna terminals, every foot of every cable.  It seemed to me that good coax db's were cheap vs amp + tower + antenna db's.  One size doesn't fit all, I use LDF5, LDF4, Buryflex, and RG400.  Most every band has 3 of these 4.  Depends on band and lengths and purpose.  My result < 1db loss every band for the monobanders 80 > 10.   Connectors (good ones) hardly matter except for weather proofing and mechanical strength.  I use DINs for hardline for several reasons other than lower loss.

Grant KZ1W

On 10/30/2018 7:21 AM, Wayne Kline wrote:
My old gray matter is not  100% recall on an article  in QST or CQ regarding 
connector loss.  The tester uses a spectrum analyzer and a TDR  with other lab 
equptement.

He had  up to 20  barrels ,T. and Pl259’s  with short lengths of coax  .

And the findings were that @ HF and insertion loss was minimal and the BIGEST 
issue was lossy CABLE



Wayne W3EA



Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10



________________________________
From: TowerTalk <towertalk-bounces@contesting.com> on behalf of john@kk9a.com 
<john@kk9a.com>
Sent: Tuesday, October 30, 2018 7:34:09 AM
To: towertalk@contesting.com
Cc: wa6ibu@earthlink.net
Subject: Re: [TowerTalk] How many connectors?

I have a lot more connectors than that and my station is quite loud.  Use
a quality connector such as Amphenol or Andrew/Commscope and don't believe
the old wives tale of PL-259 loss. Also use the best feedline that you can
afford.

John KK9A


To:     <towertalk@contesting.com>
From:   "Paul Booth" wa6ibu
Date:   Mon, 29 Oct 2018 22:43:16 -0700


This may have been asked before, but I am cleaning up my system from
temporary to permanent installation and I was thinking about putting in a
patch panel.   My question is what is a reasonable number of connectors and
barrel connectors to have between antenna and amplifier.  For now the
antennas go directly to the amp but I'm adding antennas and was going to
neaten things up with a patch panel so that I would have;

1.       Connector at antenna

2.       In/out connectors through lightning protection in junction box
outside the house

3.       Patch panel inside house on other side of wall which would have
1-barrel through panel, connect on backside and on frontside

4.       Then a connector to the amp or possible a switch (which would add
two additional connectors)



Is there a rule of thumb for any of this?  Thanks.



73s, Paul, W6IBU

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