Topband
[Top] [All Lists]

Re: Topband: Topband Tower Antenna With Two meter Vertical

To: topband@contesting.com
Subject: Re: Topband: Topband Tower Antenna With Two meter Vertical
From: Jim Brown <jim@audiosystemsgroup.com>
Reply-to: jim@audiosystemsgroup.com
Date: Sun, 15 Apr 2012 12:04:44 -0700
List-post: <topband@contesting.com">mailto:topband@contesting.com>
On 4/15/2012 11:38 AM, Herb Schoenbohm wrote:
> Remember if you run a three or four wire cage to the top of the tower it
> is the cage, not the tower, that does most of the radiation.

Right.

> This I
> would think makes running cable inside the tower not important.

My tower climbers feel that inside the tower also makes it safer to 
climb -- they're taped to a leg all the way up.

> Additionally, with crank ups running cables inside a tower can be a real
> mess.  On crank up cables need some sort of offset.  OK, just make a
> cage that is space much farther away from the tower than the drop wires
> and coax.  This should be better than having  your coax and rotor cables
> chewed up when you do the crank down procedures at night with an
> approaching storm.

Obviously crankups are a very different kettle of fish mechanically.  
Like anything else, it's a compromise.

73, Jim K9YC

_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK

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