[TowerTalk] RE : Remote Tuning of Shunt-Fed Tower

[hermans]

Try to find some old 8" floppy drivers  "Sugar" . There is a nice
stepper inside.

Jos on4kj


-----Message d'origine-----
De : towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] De la part de Pat Chiles
Envoyé : jeudi 6 octobre 2005 17:16
À : towertalk at contesting.com
Objet : Re: [TowerTalk] Remote Tuning of Shunt-Fed Tower


Dan,

The best answer I can give you is I am looking for something "precise"
if it 
is cost effective.  I am currently turning a gamma vacuum variable with
a 
cheap 8 RPM gearhead 12V DC motor from AllElectronics.  I used momentary

switches, leds, and some "junk-box gears" to give me the capacitor's
"end of 
rotation" warning.  I want to go with an omega match if the prototype
will 
give me effective dual band operation.  The steppers are more compact,
more 
precise, and more eloquent.  That being said they are not worth $220 to
me. Pat, K8PC



> Pat
>
> why are you going with a stepper ?? you could just use
> a DC motor and switch the polarity to reverse the
> motor... yes you lack the 'preset' ability but its
> going to be much cheaper...
>
> just a thought
>
> Dan N8DCJ


_______________________________________________

See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with
any questions and ask for Sherman, W2FLA.

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