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[paddysdad]

HI. Have purchased a Futaba 6ex/2.4 ghz.With it comes a R617FS receiver on reading the instruction manual it shows a external voltage supply into channel 7/b.The diagram is for aircraft .Do i require this for my model boat if so what do i need. Regards Paddysdad

[andrewh]

On any receiver (including this one) you can feed the receiver power into any of the channel plugs as well as the one called power (if there is a seperate one).  To keep the size and cost down (and width) a lot of the manufacturers do this and make the highest number channel also the power feed point.

If you have a ESC with BEC (ie it supplies power to the receiver) you do not need to do anything at all - that is where the Rx and all the servos will get the power from
If you are driving servos only, or a ESC without BEC just plug your RX battery into the Channel 7 (or any other unused channel)

BTW - if you are using all the channels and none of them are BEC, then you plug any one of them in to the correct type of "Y" lead (one male to 2 females)  and the battery into one of the females and the servo/whatever into the other - this feeds the Rx and all the servos, etc

Does this answer your question, or help?

andrew