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Unread 06-05-2007, 22:30
boyntonstu boyntonstu is offline
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Question Re: Using a VEX Receiver with Non-Vex Equipment

Quote:
Originally Posted by 1885.Blake View Post
Maybe.

You say you are only considering PWM receivers. That is one correct criterion. Good.

But there are at least the other three criteria that I mentioned.
  • The transmitter's change in frequency around the center freq as it switches states during it's FM broadcasting needs to match what the receiver expects (this is probably the least of your worries, but it could theoretically bite you)
  • The polarity of the FM signals needs to match what the receiver expects (Is the high freq a "pulse" or is it a "rest"?).
  • The ordering of the channels will be an annoyance , but not fatal if that is the only incompatability with a non-vex receiver.
These are the thngs that come to mind as a result of studying this sort of Tx/Rx system for the last few days. There may be others.

Then you need to move to determining whether the receiver's output wiring/signals matches the wiring/signals of the equipment you want to connect to it....

The subject is a bit tangled, but research and/or careful trial and error testing can get you the answer. Without specifics, you are stuck in the land of "Maybe".

Blake
Blake,

Maybe is better than not possible.

Crystal: The channel 89 VEX RX crystal which comes with the add-on kit, is 'standard' sized and it apparantly fits Futabas, Bergs, and others. (Not so the TX crystal). (3 sets of VEX crystals (6) available for $10 on Ebay)

That leaves the polarity issue. TBD.

The TX takes 8 AA cells. Rechargeable NiCads in my fridge.



BoyntonStu
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