How would I tell the difference between the Futaba R127DF FM 72MHz Low and the Futaba R127DF FM 72MHz High.

I'm trying to rule this factor out on one of my planes I'm having radio interference on my Futaba R127DF FM 72MHz Low on channel 34. All my planes are on 34 and no other bird is having this problem. The reciever and crystal are both new and never been flown. I realize that does not rule out that there is a problem.

I wondered if there was a way to tell the difference between high or low?

Thanks, Ken

Hi Ken,

The newer receivers are coming with a sticker that designates whether they are hi or low band, but if you have some that are not brand new, the only way to tell is to get two crystals, and test them out.
You may want to get a channel 11 or 12 crystal and a channel 59 or 60 crystal, use one in the receiver, do a range test and see how well it does, if you are not getting good range, try the high band crystal, you should then be getting a good range test.
Also you might want to consider sending these into the service center to be checked over and tested.

I hope you find this information helpful. You can also reach our Futaba support technical team at 217-398-8970, or via fax at 217-398-7721.

Sincerely,
Krysta
Lead Futaba Customer Service and Programming Technician
Also you may want to check our Website at (http://www.futaba-rc.com)

Hey Krysta,

Thanks for getting back to me on this.

My local hobby shop will take the crystal and reciever back and get me new ones so that is not a problem. I'm trying to rule out all possibilities before hand.

All of my recievers are marked low except for this one.
and it is the newest one I have. Thats why I was suspecting that it could be a high band reciever.

Thanks for the info. and If me and my LHS cannot resolve this I will send the reciever and crystal in for a look-see.

Thanks, Ken

Ken,

Its nice to know that you have such great support from your local hobby shop, let me know if you need anything else.

Krysta