Hi everyone,
Is there a good path to 5.8GHz UAV telemetry or a commercial combo?
I'm in Australia so 900MHz is illegal.
The only 5.8 GHz combos I've found being from blip and they are about 3 x as pricey as the Xbee 2.4 GHz telemetry from DiyDrones.
I'm just starting out in this UAV game (AP only so far) so I'd prefer to start on the quality but lower end till I know what quality I need etc.
FYI: I use a Spektrum 2.4 GHz set for the plane. I have some electronics skills (soldering, rewiring, building from kits) but not redesign skills (latter probably illegit anyways and I want to 'play safe' with the laws).
thanks in advance,
Brett
Replies
Checkout Iftron online,http://www.iftrontech.com/5.8GHz-Diversity-Pro-Receivers/c48/index.... they make a 5.8GHz diversity Pro receiver, this produces very good results.
Matching TX's range from 25mW to 500mW.
The 2.4GHz band is a bit too busy for my liking for a reliable downink. 900Mhz & 1.2GHz band are better, but, illegal in many countries.
Steve
www.bevrc.com
I just found out that the Xbee rf tx would be a no go (unless modified) due to it overlapping with GSM mobile phone network.
From ACMA in Aus:
Please note: the Australian 900 MHz ISM band is strictly limited to 915 MHz – 928 MHz. Australian mobile telephone carriers operate their GSM mobile telephone networks between 890 MHz and 915 MHz so operating at or below 915 MHz will almost certainly interfere with these services. Severe criminal and civil penalties exist for interfering with licensed services.
From Xbee datasheet:
Frequency band: 902 - 928 MHz
and no C-tick (Aus certification)
Maybe someone here knows how to modify????
I mean, think about it, if you keep them 12" away and hope to that the signal will be weak enought to not interfere then how do you expect it to reach the ground where you're standing :)
http://diydrones.com/forum/topics/score-xbee-pro-2-receivers
especially if you use high power telemetry link.
I you must use it then I suggest using Futaba FASST instead of JR/Spektrum because Futaba FASST does true freq. hopping and so will your 2.4ghz telemetry link thus they will less likely to step on each other.
I however know that Futaba gears/services in Australian is sh*t - nobody seem to carry them in the shops which is unfortunate but Toy Trader (the importer) is not doing a very good job.