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Old Nov 09, 2010, 04:31 AM
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Joined Jul 2010
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Difference between heli and areo versions of txrx

Hi all,

I've moved this thread after a suggestion from a poster. Sorry for any duplicates.

I'm looking to build my own quadcopter from scratch and have come across two potential transmitter and receivers that I think may be suitable for my needs.

Firstly, I'm interested to know whether or not I need some form of license for operating a radio controlled quadcopter for use outdoors? I'm from the UK and from what i've seen everything is fine as long as I use something in the 2.4ghz range but I'm not entirely sure on this.

The two lots i've found so far are RadioLink txrx in both a aeroplane and helicopter version. I'm a little confused as to why there are different versions, is there any major difference between the two? From what i've gathered so far, the only difference in the manuals is the setup of the servos. Does this have any impact on by build for a quadcopter? Which would be more preferable for such a project?

Finally, I see that the two use differing types of modulation. I intend to interface the receiver with an Arduino to intercept and mix the signals to allow for autonomous flight as well as controlled flight using the transmitter. The two differing types are FM(PPM) and FHSS. Does anyone know if these have any impact upon the processing of such signals or are they relatively similar?

I've started a thread on the Arduino forums which you can read here for further clarification but thought it best to ask here too. If anyone can shed some light on this form me, I would be most grateful.

Thanks for reading!
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