Spread spectrum
The advent of 2.4Ghz RC radios, popularized by Spektrum in the early 2000's, brought notions about efficient wireless communication from WiFi to radio control. One of those is being capable of using a large number of adjacent bands, transmitting redundant signals on several at a time and intelligently switching between them to deal with interference on some of them. Spread spectrum technology, in particular 'frequency hopping spread spectrum', has become a very common characteristic in RC radios, but the methods by which it is performed do generate some interoperability problems.
For operation using a non-spread spectrum radio, all users in the area have to reach agreement on which channels to use, and one user not subject to this agreement can cause control failure in someone else's radio - sometimes this used to occur when two groups were not aware of each other's presence. Spread spectrum intelligently allocates channels to a certain degree, and does not require this level of organization, so it has become a standard technology, with 2.4Ghz having a very large share of simple RC flyers in 2012 (albeit somewhat lower in specialized FPV/telemetry users).
This is a short list of spread spectrum technologies approved by the Australian MAAA.
- Align S-FHSS
- ASSAN - V2 Mini / Micro series
- ESCALE - System 242
- Fly-Dream - V3
- Frsky - V8 ACCST
- Frsky - TF series rx (Futaba FASST compatible)
- Futaba - FASST
- Futaba - S-FHSS
- Hitec - AFHSS
- Jeti - Duplex
- JR - Spektrum DSM2
- JR - DMSS
- Multiplex - M-Link
- OrangeRX by Hextronik - OrangeRx Spektrum DSM2 compatible
- Sanwa - FHSS
- Spektrum - DSM
- Spektrum - DSM2
- Spektrum - DSMX
- Thunder Tiger/ACE - IFH SS Frequency Hopping
- WFLY - Wfly 2.4Ghz System
- Xtreme Power Systems - XtremeLink
Additionally:
- FlySky AFHDS
[edit] Links
- 2.4GHz Radio Control Explained - RCModelReviews
