|
|
|
Discussion
Changes to ETSI EN 300 328 for 2.4GHz devices - impact in the EU?
In recent discussions on Futaba and FrSky threads several posters have mentioned upcoming changes to the EU standards for 2.4GHz equipment (see references below). Based on these posts I have done some research of my own, and found out the following information so far:
Aim of this thread: To discuss this change and understand the impact of the change on users of all the major 2.4GHz RC manufacturers, specifically:
|
|
Last edited by MattyB; Jan 07, 2015 at 08:37 AM.
|
|
|
||
|
Update Dec 14 - Futaba have issued a firmware update for the 14SG to ensure it complies with the new regs for 2015. As a by product it appears the FrSky FASST RXs and some Simprop RXs no longer work correctly; reason is currently unknown (even some Futaba RXs seem to have lost a degree of performance and are showing dropped frames as is logically expected). Presumably similar updates are also on their way for the other FASST TXs in the range before end Dec?
From the 14SG thread... Quote:
|
|
|
Last edited by MattyB; Jul 06, 2020 at 09:43 AM.
|
|
|
|
|
Additional resources/posts of note since this thread was started:
|
|
Last edited by MattyB; Jan 19, 2016 at 07:24 AM.
|
|
|
|
Current (Aug 2015) summary by brand...
|
|
Last edited by MattyB; Jan 19, 2016 at 07:25 AM.
|
|
|
|
Our stuff is all 'adaptive' so the new timing requirement won't apply. However the 'cease transmission' part for both adaptive and non-adaptive is very strange. They rely on successfully 'bouncing off each other' to work at all. That might have been part of Spektrum's DSM2 problem.
As for the rest, it appears to be about more testing or additional testing where none was previously required.. They may not need to change most of the stuff at all. |
|
|
|
|
|
Not all systems are adaptive, or we understand different the term.
I mean if someone come to your field and start a FPV VTx in 2.4GHz band, which will eat about 1/4 of available band, all the systems will continue to hop using channels in the VTx band, (and failing when doing this), only Hitec AFHSS will reshape his channels distribution to avoid the new "enemy" territory. This adaptability has been emphasized by Bruce in his AFHSS review, is on youtube too. |
|
|
|
||
|
Quote:
However picking these new channels will invalidate all the bind settings in all your hitec receivers. So you have to rebind all your receivers to pick these new channels up, otherwise you'll get a broken plane. To be honest, unless your flying site is suffering from terrific interference on the 2.4GHz band (which given most flying fields are in the middle of a field, not many sites), it doesn't have much use for most users. Si. |
|
|
||
|
||
|
A great post from Si on the "Futaba 10J - the end of FASST?" thread....
Quote:
|
|
|
Last edited by MattyB; Apr 02, 2014 at 12:17 PM.
|
|
|
|
|
Valid for receivers only, the Tx must be updated to not transmit on the busy channel.
The receiver will work as before, without upgrades, waiting on new channel, without knowing it is busy, will get nothing because Tx is muted, then will hop on next channel, and so on. But Tx must listen the next channel before hop, which is not done in current systems, and cut transmission if channel is busy, again not done. These must be addressed by a new firmware. |
|
|
|
|
|
I'm slightly puzzled by this, does it mean that if you have a system that transmits continuously on a channel it has to listen before using that channel and then once it's got it it can keep it and everything else has to keep off it. If thats not the case and everything has to hop, then the transmitter will check the channel before broadcasting, but by the time it broadcasts the other system may have already changed to another channel.
|
|
|
|
||
|
Quote:
|
|
|
Last edited by MattyB; Apr 03, 2014 at 03:56 AM.
|
|
|
||
|
Quote:
|
|
|
Last edited by MattyB; Apr 03, 2014 at 04:11 AM.
|
|
|
||
|
Quote:
|
|
|
||