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
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|