The RD (read RD ) as in Romeo Delta not DR as in Delta Romeo... 8000 vs the DR 8000.. the RD8000 is a fine radio. It is equally as good as any of the futaba's in it's category, so quit downing the Airtronics systems. I have both the RD6000 and the RD8000 radios and they give me great service.
I also have a Spektrum DX7 radio system and it too gives me good service. There are many people out there that swear by any of the big radio systems, and the truth be know, they are basically all the same.
Jeech, futaba fanatics..
The best way to get information on the error codes is to call Airtronics Service and see what they have to say about it. They may ask you to return the TX to them for service. The phone number is available at their web site which is
http://www.airtronics.net