[amsat-bb] AlphaSpid Green Heron rotor controller PstRotator

[Burns Fisher]

Is the Alfa-Spid stepper motor based?  Certainly the feedback is digital.
But I could certainly imagine a bunch of fast steps sounds like a beep.

My G5500 actually makes a slightly odd noise too. I sounds almost like a
clock being wound.  I'm guessing it has something to do with the brake??
Does the A-S have one?

Maybe sound insulation is going to be your best bet.

On Thu, Mar 26, 2020 at 9:10 PM Kevin via AMSAT-BB <amsat-bb at amsat.org>
wrote:

> I do not own one but looking at the documentation for the controller I
> noticed this,
> "gradual startup and shutdown of rotor power to reduce stress on towers,
> antennas and rotors. This is achieved by pulse-width-modulating the
> operating voltage for the rotor."
>
> That could very well be the source of the "beeping"  with the windings
> in the motor singing.
>
> 73
> Kevin WA7FWF
>
> On 3/26/2020 17:47, Jeff via AMSAT-BB wrote:
> > Green Heron R-21 controller
>
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