2.4G transmitters and their actual frequencies

[M'ck'y]

Does anyone know what different make of transmitters are actually using in mhz?

Spektrum -
Futaba -
etc

Cheers

[M'ck'y]

http://www.helifreak.com/showthread.php?t=56620&page=3]Hi[/url],

I just received my TM-14 module and successfully plugged in in my 14MZ. I cheched the frequencies with a scanner and I can confirm that when positionned to "France" the module transmits only between 2400 and 2450 MHz, so Futaba did a bandwith limitation, not a power limitation (there's no output at all between 2450 and 2483 MHz).

BTW I had to change my radio to Europe version (module is europe one, bought in France). One important thing I noticed is when reverting to encoder 1.1 - 1.31 to use the calibration utility for the 14MZ, when I set the region to Europe, at reboot I loose all text in the display !! (bug seems to appear only when the radio is set to Europe, I tried America and it works well). But no panic, I just had to uprgade again to 1.21 - 1.38 and display gets back as normal for Europe zone.

A+

Sam

Quoted from another site, What scanner do you think that was?

[ScooterInVegas]

For 2.4, 250mw is the max without a license. Ive read that the DX7 was 195mw when tested.

[Trappy]

I've heard it's 100mW in Europe, but I'm not 100% certain. EU transmitters broadcast in the lower end of the 2.4GHz spectrum, usually around 2.1GHz - 2.45GHz. Again, I'm not 100% certain of this as the last time I checked this was quite some time ago. For all those concerned with disturbing fellow R/C pilots (or getting disturbed by them), avoid channels 1-4 on lawmate devices.

[ZobZibZab]

its 100mW for digital transmissions 10mW for analog (those are not the technical terms, but the tl;dr version) in most EU countries I know of
also its usually effective radiated power thing (aka EIRP or Effective Isotropic Radiated Power) so having a digital tx at, say, 100mW and a XX dbi antenna breaks the law of course
im not even sure a lot of the standard wifi equipement follow the rules to the letter as many seem to emit 100mW and then have of course an antenna

pretty sure some HAM are more informed on this. if i remember .. its like 1W in the US without license (?)

[GLEvideo]

Some info here. There is also a link in this thread to the FCC site where you can read the all the legal speak.
http://www.rcgroups.com/forums/showthread.php?t=1290013

[volto]

FrSky jumps between about 50 different frequencies. That's why I use it.