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Re: [TowerTalk] [Bulk] Re: Cutting a FT-240 type 33...in half ??

To: Ian White <gm3sek@ifwtech.co.uk>, 'Jim Thomson' <jim.thom@telus.net>, towertalk@contesting.com
Subject: Re: [TowerTalk] [Bulk] Re: Cutting a FT-240 type 33...in half ??
From: Grant Saviers <grants2@pacbell.net>
Date: Tue, 10 Feb 2015 09:08:43 -0800
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Boxless is one way to go if the coax fits the cores, but as previously posted I use RG142 TFE coax for the choke windings.

My latest design (in process) to avoid connectors going from the rotator loop to the choke is to use watertight cable entry grips for that cable directly into the plastic choke box. These are available in sizes to fit most any coax and have an o-ring to seal the box hole. All connections in the box are soldered and glyptol'd. Likewise if #10 wire is used for the driven element connection, there are grips that go small enough to clamp on it. In the end, I've never had a totally watertight box so do drill a 1/8" hole for drainage at the low point in the box as mounted. Note that stranded wire is not watertight, the water will wick down the strands. Adhesive filled ring lugs help prevent that.

Grant KZ1W
it doesn't rain much here in Redmond, WA,  just all the time.

http://www.mcmaster.com/#catalog/121/876/=vum4yl

On 2/10/2015 3:35 AM, Ian White wrote:
But why use a box with bulkhead connectors anyway? That seems to be the root 
cause of all the problems.

I never use bulkhead sockets on anything outdoors, because they require 
stripping the coax which creates opportunities for water leakage, bad solder 
joints and corrosion - all of which can be avoided by using inline connectors. 
If you don't need someplace to fix bulkhead connectors, then you don't actually 
need a box either.

Would there be any problem about using inline connectors and no box at all? 
That would cure your space limitations :-)



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