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2.4 Ghz Spread Spectrum Technology Discuss Spektrum, Futaba FASST, and all of the exciting 2.4 transmitter/receiver technology here!

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Old 01-06-2007, 02:48 PM   #13 (permalink)
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Default Re: Can a Spektrum radio shoot down another Spektrum radio?

Those "problem 125sport" servos are favorites of mine I ran 5 of them for 9 months on the Funtana with a Evolution 26 on a pipe - worked great - No looseness -excellent 3D plane--- then put 2 (from the Funtana) in elevators of my 33% Edge with ZDZ80 piped- again work perfectly
put two of the last three in my new Bling on the elevators -with the DX7 radio - best tracking yet and instant response-
BTW there is still no slop in these servos --
I found most problems with those servos was directly related to wiring used - Y harness etc..
I also run em exlusively on 5 cell NiMh packs
for shucks, I piled two 7000rx and servos n batts in a pile - did bind on each one - both sets ran perfectly together-no jitters
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Old 01-06-2007, 05:07 PM   #14 (permalink)
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Default Re: Can a Spektrum radio shoot down another Spektrum radio?

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From what I have seen the new ones will shoot down themselves.
Please explain.
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Old 01-06-2007, 08:45 PM   #15 (permalink)
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Default Re: Can a Spektrum radio shoot down another Spektrum radio?

I was just talking to a guy today and i think my statement maybe a little off. It is my understanding that you have to bind the transmitter and receiver together therefore making it even more unlikely that a shoot down be possible. He even showed me where he changed models and he was unable to control his model on the deck with the transmitter. IE: he had raptor 90 as the selected model and his e-cell 90 was sitting on the table. There was not controlling the xcell when he had the raptor selected. He did have to power cycle the transmitter after selecting the xcell, not sure if this his choice or a necessity. Although i mainly stick with my original post that it is possible it is becoming more and more unlikely. This is a great step for RC....
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Old 01-06-2007, 08:46 PM   #16 (permalink)
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Default Re: Can a Spektrum radio shoot down another Spektrum radio?

very correct
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Old 01-06-2007, 10:05 PM   #17 (permalink)
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Default Re: Can a Spektrum radio shoot down another Spektrum radio?

My friend just got the DX7 and I'm liking it a bunch - he's got the micro RX in a T-rex 450 & it's nice. No messing with a ferrite ring or other worries. We are having some gyro "hits", but it's in the front, so the wires go from the RX - by the ESC and motor - to the gyro in the front - and then back by the ESC and motor to the tail servo. Maybe the gyro is getting some noise in the signal line?

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Old 01-07-2007, 03:11 AM   #18 (permalink)
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Default Re: Can a Spektrum radio shoot down another Spektrum radio?

With the DX7, it's practically impossible to shoot somebody down, or get shot down. Each DX7 Tx has it's own unique code that it binds to a reciever. It also binds that reciever to a specific model number. Model number 1 won't respond if the radio is on model 2. Once binded, that reciever will only listen to that particular transmitter on that particular model number. I know they frequency hop too, but they also operate on a digital signal. That means that two radios can tell each other apart, even if they are on the same frequency. It's like having four people in a room with two pairs having seperate conversations. Even though they are all speaking in English, they can tell each other apart.
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Old 01-08-2007, 06:30 AM   #19 (permalink)
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Default Re: Can a Spektrum radio shoot down another Spektrum radio?

Lets try this simile:
My TRANSMITTER was designed at Spektrum to only emit signals in vanilla. (Owner cannot change this programming)
When I bind my receivers to the transmitter they will only 'hear' vanilla signals.
Plane one is bound (binded) as vanilla coffee. It will only can 'hear' vanilla coffee signals.
Plane two is bound to only hear vanilla ice cream.
Plane three - vanilla shampoo.
I can have a plane with two receivers hearing the same "vanilla coffee" signals simultaneously as a dual receiver system-for redundancy.

You bring your transmitter to the field - it was designed at Spektrum to only emit signals in clove.
Though your #1 plane could be looking for similar coffee or ice cream signals, it only will only recognize signals in clove coffee.

Or we could use; the Mama penguin passes on her particular musky-sweet pungent odor...

Insert the binding plug into the vanilla coffee system - turn on the clove transmitter - push bind button, and it now will only hear clove coffee signals.

I'm by no means an expert, but I have stayed at Holiday Inn Express before. I believe the above to be crudely accurate - and hopefully helpful.
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Old 01-09-2007, 01:24 AM   #20 (permalink)
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Default Re: Can a Spektrum radio shoot down another Spektrum radio?

Quote:
Quote:
From what I have seen the new ones will shoot down themselves.
Please explain.
A friend of mine has one and has nothing but problems with it. Th eraido has been sent back twice and still they have not found a problem with the radio. My friend (who will remain nameless ) has the first version of the Spectrum radio and has been using it exclusively on his foamies, but with this new system it will not pass a range check. I'm sure in principal the system works but I believe there will be some growing pains.
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Old 04-18-2007, 02:13 AM   #21 (permalink)
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Default Re: Can a Spektrum radio shoot down another Spektrum radio?

Quote: Originally Posted by Huckeneer
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What he said but he beat me to it.

NO, the rx and the transmitter is constantly changing "channels" within the 2.4ghz system, and it searches for that open channels that it changes to. So unless some other radio just happens to search the same channels (2channels) and switches over at the same time, it won't happen. you have a better chance winning the lottery.BUT if you fly behind an opstackle the spectrum will go into fail safe, because the transmitter is on such a high resolution the messege sent will not go around obstackles. I don't know if you will be having that problem or not.

Hope that helps.

My understanding is that it only searches for two open channel when the tx first connects to the rx. Once this is done, those are the two channels it will operate on. It does not "constantly change" like stated.
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