LF: Re: Interesting reading

["K2ORS" <k2ors@comcast.net>]

J.B.,

   I believe that the GAP line of amateur verticals does something very 
similar.
73 Warren K2ORS

----- Original Message ----- 
From: "J. B. Weazle McCreath" <weazle@hurontel.on.ca>
To: <lowfer@mailman.qth.net>
Cc: <rsgb_lf_group@blacksheep.org>
Sent: Friday, January 04, 2008 10:10 PM
Subject: LF: Interesting reading


> Hello Lowfers & LFers,
>
> My good wife gave me Volume 7 of the ARRL Antenna Compendium
> as one of my Christmas gifts.  On page 3 is an article which describes a
> very clever way of placing inductive loading at the top of a tower which
> is part of a top loaded monopole. The author is John Belrose, VE2CV.
>
> It's done by placing an insulated conductor inside the upper portion of
> the tower.  The top of the conductor extends above the tower slightly
> and has the top loading attached to it.  The lower end of the conductor
> is connected to the tower to form an air-insulated coaxial line.  Moving
> the position of this lower connection varies the length of the coaxial 
> line
> which in turn varies the inductance.
>
> Has anyone here heard of this previously and/or tried it?
>
> 73, J.B., VE3EAR - VE3WZL
> Solar and wind powered
> Lowfer " EAR"  188.830
> EN93dr
>
> http://www.hurontel.on.ca/~weazle