Will a Spektrum (air) receiver work on (surface) radios? - RC Groups
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Jan 12, 2011, 01:53 AM
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cannondale1974's Avatar
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Will a Spektrum (air) receiver work on (surface) radios?


For instance, I have a few AR6100 park flyer receivers. Will they bind up with say a Spektrum DX3S car radio?

Thanks!
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Jan 12, 2011, 10:00 AM
AndyKunz's Avatar
No. Surface receivers (SRxxxx) only work with Surface transmitters.

Marine receivers (MRxxxx) work with Marine-compatible surface transmitters (they'll have a boat logo on them), plus they'll work with aircraft transmitters.

Aircraft receivers (ARxxxx) work only with air transmitters.

Andy
Jan 12, 2011, 10:12 AM
Don't lie to my dog.
Gregg28's Avatar
Quote:
Originally Posted by AndyKunz
No. Surface receivers (SRxxxx) only work with Surface transmitters.

Marine receivers (MRxxxx) work with Marine-compatible surface transmitters (they'll have a boat logo on them), plus they'll work with aircraft transmitters.

Aircraft receivers (ARxxxx) work only with air transmitters.

Andy
Why?
Jan 12, 2011, 10:25 AM
Surface, Air & Water Rc Toys..
freechip's Avatar
Because HH wants you to buy more stuff and it works. Its not just them but other and not just in the hobby.
Jan 12, 2011, 10:50 AM
AndyKunz's Avatar
Quote:
Originally Posted by Gregg28
Why?
At the lowest level, the communication is done differently for each.

Surface radios need to be able to have a super-low response time - we have surface radios with a 5.5ms refresh rate. The communication was optimized to be able to do that.

The aircraft radios need to be able to support up to 12 channels (JR 12X). You can't have high-channel-count and low-refresh-rate both, so they are optimized appropriately.

Marine is different still. It needs the diversity of the aircraft radios but not a high channel count.

Andy
Jan 12, 2011, 11:30 AM
Don't lie to my dog.
Gregg28's Avatar
Quote:
Originally Posted by AndyKunz
At the lowest level, the communication is done differently for each.

Surface radios need to be able to have a super-low response time - we have surface radios with a 5.5ms refresh rate. The communication was optimized to be able to do that.

The aircraft radios need to be able to support up to 12 channels (JR 12X). You can't have high-channel-count and low-refresh-rate both, so they are optimized appropriately.

Marine is different still. It needs the diversity of the aircraft radios but not a high channel count.

Andy
Makes sense, Thanks.

But there is no real or legal issue with using a Dx6i on a boat, correct?
Jan 12, 2011, 02:07 PM
AndyKunz's Avatar
Correct, that was only with 72/75MHz.

Andy
Jan 22, 2011, 05:10 PM
Don't lie to my dog.
Gregg28's Avatar
I know that this is off topic, but another Spektrum question:

I have an old Ace radio. I would like to convert it to 2.4mHz. Can I use any Spektrum module and plug it into the Ace encoder board? Is the difference between modules mostly just the plug and case or are there other differences? Probably need a Hitec/Futaba for the correct shift, I am guessing.
Jan 22, 2011, 09:13 PM
60 years of RC flying
Daedalus66's Avatar
Quote:
Originally Posted by Gregg28
I know that this is off topic, but another Spektrum question:

I have an old Ace radio. I would like to convert it to 2.4mHz. Can I use any Spektrum module and plug it into the Ace encoder board? Is the difference between modules mostly just the plug and case or are there other differences? Probably need a Hitec/Futaba for the correct shift, I am guessing.
You probably can adapt a module to the Ace encoder, but it's not as simple as plugging it in. First, it depends what Ace radio. Second, you have to find the PPM signal and make sure it has suitable level. You may also need to determine the polarity (shift has nothing to do with this, as it's an FM concept). You also need to determine whether you should use a JR-type of Futaba-type Spektrum module. And, of course, you'll have to do some soldering and adapting. So you need to know what you are doing.

You need to get exact information about your transmitter and ask a specific question. You should start a new thread when you have an unrelated topic like this and give it a clear title that will attract people who might know. Something like "How to adapt an Ace XXXX to Spektrum 2.4?"
Jan 23, 2011, 05:04 PM
AndyKunz's Avatar
The DIY Electronics forum is definitely a better place to ask. There are several who have done similar conversions there.

Andy


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