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So you can imaging that eventually your 2.4ghz video Tx. will step on your 2 Spektrum channels.
Futaba FASST system actually continously hop between all the channels in the spectrum.
I use Futaba FASST with 2.4ghz video Tx without any issue full stop!
I think it's still best to use a different freq. for video especially if it's high power Tx. because can still degrade the signal quality of your 2.4ghz RC gears.
Please don't start the Spektrum vs. Futaba war - I just want to let you know what works.
One of the other things that came up was this article:
http://www.rcmodelreviews.com/dsm2flaw.shtml
This suggests that I may work without problems sometimes (when DSM2 picks two well-seperated frequencies) but can fail at other times when the frequencies are too close together.
UFO-MAN
I fly RC Helicopters at a club every weekend and we all pretty much use 2.4GHz radios (predominantly Spektrum DX7's) and have never had a problem with frequency interference. There can be up to six people all flying at the same time and no one has any problems even with camera gear strapped in.
There are a couple of things that the Spektrum hates however. These are low batteries and bad binding. It is best to buy a regulator and use a 15V 2000maH LiPo that is regulated down to 5V/6V depending on your servos/gyro if you are using one.
With Binding all the lights on the receiver etc.. must be solid! If they are not then it means that something is wrong or the radio has not been bound properly (bind plugs don't forget them). Once the radio is bound correctly the receiver will only accept signals from that transmitter, this is the magic of digital radios. So if all that was done correctly then there should be no problem with anything even if it is on the same frequency.
There is one guy at the club who is building a camera carrier and is sending down HD footage with a 2.4GHz transmitter and no interference.
Having a transmitter on board the airplane with the same freq, is not at all like having the same freq on the flight line.
The receiver can easily be overwhelmed by a transmitter that close.
The effect is a square of distance effect, so just a few inches will make a huge difference.
You can probably find ways to move the transmitter away from the receiver - especially if your frequencies will remain close. You can also have interference by frequencies which are harmonically related. So separating them on the plane is never a bad idea.
I just got a DX7. And i will get a range video too. Is there no way the 2.4ghz transmitter live peacefully with the ar7100 receiver? i understand how it could be a problem, but there are no DSS 1.3ghz or 900mhz transmitters for video.
What would be the best choice. I have the dx7 but I have not bought the video yet, so any recomendations greatly appreciated.
Best
Receiver: AR7000 DSM2 7Ch Spektrum RX
TX: DX7.
I don't know if the AR7000 should be powered with more than that, but when moving 2 or 3 servos simultaneously, the extra load powered down the receiver and lost control (Rx lights off). A couple of seconds after (10 secs or so) it powered itself again, contol again... waited and everything worked until i moved the servos to produce enough load to power it down right away.
IMHO, I would say you had battery problems. Of course, I can't be sure. Hope this helps.
-dave