For a stepper motor check
http://www.herbach.com/Merchant2/mer..._Cod e=H2-553
and for the controller check
http://www.alliedelec.com/Search/Pro...p?SKU=316-0061

"Bob Bob" wrote in message
...
Hi Lee

Two thoughts

Re stepper motors. You can often find them in old junked scanners. A nice
cheap source. If you are feeling really cheap the interface can intially
be a simple TTL counter cct and some pass transistors. I once used one off
my PC parallel port for an EzAl antenna system.

Also look at the possibility of using a piston capacitor and driving that
with a threaded bar connected to your motor. This may still be a little
fast though. You might also get away with a long lever and threaded bar
arrangement if turning a standard rotary capacitor. Kind of limits you to
something less than 180 degrees tho.

A car windscreen wiper motor is another possibility also through a
threaded bar. (Overkill on the torque tho)

Cheers Bob Vk2YQA

Lee wrote:
"Richard Clark" wrote in message
...

On Sat, 08 Oct 2005 06:26:31 GMT, "Lee"
wrote:

Seriously, any ideas to slow the tuning rate will be most welcome .