Probably 95% of the problems with Spektrum/JR 2.4GHz radios are power system related.
This certanly sounds power related. Since 1992 I have been running dual battery/switches plugged into 2 ports on the receiver. With no power problems since, I've been glitch free.
So the battery pack supplied with the radios are not powerful enough? The DX7 comes with a 4.8v 1200MAh battery. The Futaba 7C comes with a 4.8v 600MAh battery. Why aren't Futaba systems falling out of the sky like crazy?
Are you saying that those Spektrum receivers that are "not as expensive" as Futaba receivers require the purchase of an additional $30+ battery pack? Where did those savings go?
I've yet to see more than a very, very rare occurence of a documented failure that wasn't user initiated.
Spektrum die-hards seem to put the blame for equipment malfunction on the user: YOU didn't have enough power. Let's see... 4.8v @ 1200MAh isn't enough to power a 4.8v, 6-channel radio?
What would they say if they bought a new refrigerator and it kept blowing circuit breakers, so they call the company and the rep told them, "Well, you can put a container of milk in there, and maybe a cup of yogurt or two, but if you put a turkey in there, you'll have to re-wire your house for 220 volts!"
I think you need to do a bit more digging.
yea, dig a hole and put your Spektrum radio in it! Or keep your Spektrum radio and let your airplane dig the hole for you.