[TowerTalk] 1 5/8" hardline to N female?

[Keith Dutson]

Here's what I would try.  Obtain a small aluminum clamshell-style box, about
the size of the connector flange.  Mount an N female bulkhead connector on
one half.  Mount the other half directly to the flange using bolts and nuts
through existing holes in flange.  Solder a short piece of solid 10 gauge
copper wire to the copper pipe and the other end to the N connector.  I
would cut the wire just long enough to allow soldering to the N connector,
then bend the wire slightly to close the box halves together.  Once bolted
together the flange should have a good electrical connection to the N
connector.

73, Keith NM5G

-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of billmilosz at aol.com
Sent: Wednesday, April 20, 2005 12:24 PM
To: towertalk at contesting.com
Subject: Re: [TowerTalk] 1 5/8" hardline to N female?

Sorry, I guess I didn't give enough info.
 
This antenna is a Harris Skytiller SKH tuned to 106.7 MHz donated to a
nonprofit group for use in LPFM service.  This is a commerical
circularly-polarized VHF antenna. Installation details of the 10-watt
xmitter reqires use of very flexible cable, hence some kind of RG-8X must be
employed.  (Besides it's not really necessary to use 1 5/8 hardline at 10
watts.... though I'm sure the loss would be low, LOL) Hence, the need for
N-to-1 5/8 adapter, and the volunteer / nonprofit nature of the project
prohibits spending $200 for a commerical adpater.
 
SWR measurements were made with an MFJ-259B at the resonant frequency of
106.7, in addition I swept up and down and indeed it does reach a minima
around 106.7- although the slope to the minima is a gentle one.  I also
tried the transmitter and a decent quality directional power meter just in
case my MFJ-259B was malfunctioning, but the results agreed between the two
methods-  SWR greater than 5:1
_______________________________________________

See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with any
questions and ask for Sherman, W2FLA.

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