futaba 4yf tx + futaba r168df rx = whatrxcrystal? how do you know?

Well, first, is that a 72 MHz system? If so, what channel is it? The receiver frequency (channel) must match the transmitter.

Second, if 72 Mhz, it doesn't have a crystal that came with it?

CGr

this is for a friend. I fly 2.4

yes his is 72 mhz

its a used rx he wants to use with his transmitter which is on channel 53.

Get a futaba channel 53 receiver crystal.

I don't think that receiver is PCM either so you should be alright

Ok. Channel 53. That's 72.85 MHz. That's a start.

Is it a Futaba? Airtronics? JR? Who makes the radio receiver? You cannot mix-and-match receiver crystals. We really have to have all the specifics about this.

This hi band one is for your R168DF order it in channel 53:

http://www3.towerhobbies.com/cgi-bin...=LXBFK8**&P=RF

John

John has it right, you need a Futaba Dual Conversion FM on Ch 52

(DF= D dual conversion, F FM)

BTW, PCM is FM, there's no difference.