How could this be the forerunner to the "screwdriver" mobile antenna?
His article was published circa 1986, and screwdriver mobile antennas go
back to the 1950's & 60's!
That said...
I could forsee mechanical problems mounting a "screwdriver" at the top of
the antenna, but what if it's at the bottom?
73
-----Original Message-----
From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Steve Hunt
Sent: Saturday, November 09, 2013 4:51 AM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] 160 M antenna
Rick,
That's correct!
The only published article I know of was by Tim Forrester G4WIM in
RSGB's RadCom - later included in their book "HF Antenna Collection". In
addition to the basic top-loading principle, Tim described in detail the
mechanical arrangements for the auto tuning whip: a geared motor drove a
lead screw that progressively introduced a core into the loading coil.
Tim won an RSGB award for the article - the design was in many ways a
forerunner of the "screwdriver".
73,
Steve G3TXQ
On 09/11/2013 09:13, Rick - DJ0IP / NJ0IP wrote:
> Steve,
>
> I don't understand what you are describing.
> I think you mean placing a screwdrive-tuned mobile whip on top of a metal
> lower section.
> Correct?
>
> I have never seen or read about this.
> Do you know a source where we can read more on this?
>
> 73
> Rick, DJ0IP
>
>
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