DSM2 is known to be pretty rubbish even under the best of circumstances, and as Nerdic pointed out, regardless of the brand: its just not a resilient protocol. If orange receivers have a worse name than Spektrum, then its only because spektrum mostly stopped selling DSM2 gear some time ago in favor of DSMX and orange has only more recently began making that switch.
But the problem with those older radio protocols goes beyond the risk it (always) poses to their owner; they also increase the problems for everyone else if you have dozens of them. Frsky D8 (and even V8) have been absolutely bullet proof for me far away from large events, but they dont comply with the above linked regulations either and should therefore also be deemed a risk to everyone else in a very crowded space.
That is why I feel they should be banned at big events; additional measures could be taken to limit interference from wifi and other devices that might interfere in the 2.4 GHz band. For instance if there any wifi access points, limit them to 801.11n 5GHz and while you're at it, select channels that are furthest removed from FPV channels.
When you have that many people and radio devices, you probably cant eliminate all issues, but some steps could go a long way to minimize the risks.
But the problem with those older radio protocols goes beyond the risk it (always) poses to their owner; they also increase the problems for everyone else if you have dozens of them. Frsky D8 (and even V8) have been absolutely bullet proof for me far away from large events, but they dont comply with the above linked regulations either and should therefore also be deemed a risk to everyone else in a very crowded space.
That is why I feel they should be banned at big events; additional measures could be taken to limit interference from wifi and other devices that might interfere in the 2.4 GHz band. For instance if there any wifi access points, limit them to 801.11n 5GHz and while you're at it, select channels that are furthest removed from FPV channels.
When you have that many people and radio devices, you probably cant eliminate all issues, but some steps could go a long way to minimize the risks.
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