[Moon-net] TVRO Accuator noise

[F1TE]

I confirm that this solution is OK.
Here my realization with an AC  filter recovered on a old  PC Power supply 
and a non polarized capacitor 47uF 100V.

http://www.f1te.org/Verin/DSCF0166.JPG
http://www.f1te.org/Verin/DSCF0165.JPG

I did not dare to dismount the motor to assemble the capacitors  directly on 
the brushes.

73, Lucien F1TE



----- Original Message ----- 
From: "Darrell" <ve1alq at nbnet.nb.ca>
To: "Wilt Barnum" <n0ipl at psouth.net>; <Moon-net at list-serv.davidv.net>
Sent: Tuesday, January 30, 2007 12:26 AM
Subject: Re: [Moon-net] TVRO Accuator noise


> Hi Wilt and Group;
>
> All Actuator RF noise is generated at the Commutator & Brush's it the
> Actuator Motor DC which are usually 36VDC Motors drawing a couple of
> Amps at full voltage.
>
> I have been able to totally eliminate the noise here from HF to
> 23cm......not quite that simple, but not difficult either.
>
> Get as close the Brush Holders as possible and attach a 100pF , 10pF
> and a 1uF in parallel from each Brush holder to Motor Housing (Ground).
>
> If possible and your Motor is inclosed in a Hood Housing obtain an of
> AC Receptacle Feed through Filter and mount it in the Box, or clamp
> it to the outside as close to the Input as possible.
> It done wonders for me here and not as difficult as it may sound.........
>
> Unless you are in the Air on a Tower a couple of hundred feet with no
> Safety Belt or Ladder, hi hi
>
> Regards &  GL, Darrell
>
> At 10:53 AM 1/29/2007, Wilt Barnum wrote:
>
>>Hello all!!  Would any of you have any input on this issue? Can it
>>be reduced or eliminated?
>>
>>Best regards, Wilt W1IPL FN53 Maine
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