[Top] [All Lists]

Re: [TowerTalk] Antenna Distance From Shack

To: <>
Subject: Re: [TowerTalk] Antenna Distance From Shack
From: Robert Chudek - KØRC <>
Reply-to: Robert Chudek - KØRC <>
Date: Fri, 18 Aug 2006 12:23:06 -0500
List-post: <>
Hi Pete,

Can you elaborate on the "1750 Hz (measured at 28 MHz) of 3/4" CATV" you 
mentioned? First, I assume you meant 1750 KHz, but aside from that, I'm not 
following what you mean.

Also, measuring loss at the shack with the MFJ-259B... Unless you install a 
non-resonant 50 ohm terminator at the opposite end, your readings in the shack 
will continue to 'vary widely' (although maybe not as "widely"). If you 
installed a 50 ohm load on one port of a remote antenna switch that would 
accomplish the task, but I'm thinking this is not what you had in mind 
regarding measuring loss.

73 de Bob - KØRC in MN

Message: 2
Date: Fri, 18 Aug 2006 08:13:14 -0400
From: Pete Smith <>
Subject: Re: [TowerTalk] Antenna Distance From Shack
Message-ID: <>
Content-Type: text/plain; charset="us-ascii"

Frank and Bill make good points.  For the last 10 years, I have been using 3/4" 
CATV for most of the 190-foot run from my house to my antennas.  To be 
specific, I use RG-213 up the tower and across the roof of my house to my 
2nd-floor shack, but use multiples of a half-wave at 1750 Hz (measured at 28 
MHz) of 3/4" CATV in between. 

-- some stuff snipped here --

I want to be able to monitor loss from the shack, something that my composite 
feedline doesn't seem to let me do (the indicated loss on my MFJ-259B varies 
widely with frequency).

-- trailing text snipped  here --


TowerTalk mailing list

<Prev in Thread] Current Thread [Next in Thread>