Re: LF: Interesting reading

[Jean-Pierre Méré <jpm.f1afj@online.fr>]

Hello J B and all ,
look at :  
http://patft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/PTO/srchnum.htm&r=1&f=G&l=50&s1=3984839.PN.&OS=PN/3984839&RS=PN/3984839
73 qro J-P f1afj


J. B. Weazle McCreath a écrit :
> 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
>
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--
Website : http://jpmere.online.fr/