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Old 04-10-2017 | 05:25 AM
  #83  
jescardin
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From: Talamanca de JaramaMadrid, SPAIN
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Originally Posted by tassos p
Thanks Jesus,

Really informative. So as captain Tarr mentions:
FCC Part 15 limits RC 2.4GHz to 247mW and CE conformity limits it to 100mW (perhaps some of you guys can confirm and elaborate on this).


and considering what you say above, even if theoretically 100 people show up in the field with FASST radios, 50 people with FCC regs and 50 people with CE regs, the ones with lower transmission power could suffer?

What happens in international gatherings when radios come from all over the world to one place? Never heard of an incident like that before.....

Tassos
Well one thing is FCC allows up to 247mW and other what really is the power from different brands transmitters. I shouldn´t be surprised FUTABA equipment also transmit at 100mW EIRP in USA also.

Anyway I am pretty sure than more than RF power (do not forget receivers obey only to its linked transmitter and RF power dissipates a lot with distance) it is more dangerous to coincide transmitters with LBT (they search free 2.4GHz channels before jumping) with others which do not comply with LBT (they are freely jumping from one channel to other).

In that situation the LBT transmitter may get in difficulty as to find a free channel and then the possibilities of going into fail safe grew dangerously. An important point for consideration to events organizers.

Of course this is only important in very crowded flying clubs and events with many fliers where organizers do not ask pilots for transmitters.

Best Regards.

Last edited by jescardin; 04-10-2017 at 05:46 AM.