[NSRCA-discussion] Analog Servo RF Masking and....Thanks!

[Ken Thompson]

Dang Scott,

I sure hope you find out what it is.  Are you putting the servo's in the plane when you check them, or are they on the bench.  If they are in the plane, where are you running the antenna?  If the antenna is inside the fuse, pull it out and lay it outside the plane and range check again.

Ken
  ----- Original Message ----- 
  From: Scott Pavlock 
  To: NSRCA Discussion List 
  Sent: Tuesday, July 04, 2006 3:57 PM
  Subject: [NSRCA-discussion] Analog Servo RF Masking and....Thanks!


  First I would like to thank everyone for the great advice on these last few posts I've posted. Everyone has been a big help.

  I'd like to ask if anyone knows if an analog servo would mask glitches coming in?
  (2 - Futaba 3010's, 2 - Hitec HS77's, 1 - HS81MG) 

  When I connect my JR digital servos ( 2 - 9411sa's, 1 - 8411sa, 1 - 8417, 1 - 3421sa) I get a pretty significant, constant glitch, as if the servos are constantly trying to center, but they have no load what so ever. This is the problem I have described in previous posts. 

  When I connect analog servos in an identical set up, there is no "noise" at all. I range tested them at 100 feet with 1 antenna section up and there is no loss in speed and no sluggish behavior. I also range tested this at about 300 feet with the antenna completely down just for kicks, and I get the same results. 

  When I range test the digital servos, even at the 100 foot range with the antenna completely extended there is a significant, constant glitch. The servos, receiver, and transmitter have all just gotten back from being checked and the 9411sa's had new pots put in, the receiver had been re-tuned to the frequency, and the transmitter got a new antenna. I am very surprised with these results as I just spent a fair amount of money to have my electronics looked at and deemed well. 

  Now, my question again, are my analog servos just masking a problem, or is this solely a problem in the digital servos?

  Thanks a ton everyone!

  Scott



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