I now see this almost exactly parallels on both main points a suggestion of
Dave's from 3 days ago :-).


On 24 October 2016 at 15:38, RussellMc <apptechnz@gmail.com> wrote:

> You could use a few taps of binary selected caps and then a smaller numbe=
r
> of the higher ratio variable caps.
> Every stage of dinary selection allows a halving of varicaps needed.
>
> Or a mechanically variable unit :-).
> Piezo, memory wire, linear actuator, motor driving fine thread, stepper,
>  ... .  :-)
>
>
--=20
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.