For those not wanting to scour through the Radiocommunications Act 1992, the Radiocommunications (Low Interference Potential Devices) Class Licence 2000 defines what frequencies can be used for particular purposes and at what power. Any transmitters that do not comply with this licence, apart from 36Mhz (covered in the Radiocommunications (Radio-Controlled Models) Class Licence 2002) are illegal.
Just for clarity however, 2.4 and 5.8 systems can be used; at surprisingly high power too! From the low interference licence:
|
26 |
Telecommand or telemetry transmitters |
1. 2400–2450 2. 5725–5795 3. 5815–5875 |
1 W |
|
27 |
Telecommand or telemetry transmitters |
5795–5815 |
2 W |
Although I'm sure the risk of getting caught is very small, the lower two channels of the HK 900Mhz system are within the range of 3G mobile networks. The upper two are very close to air collision avoidance systems (around 1030Mhz). Please think carefully about taking a risk with using illegal systems, including risks to yourselves (high penalties if you get caught), others (like causing a plane to crash) and to other FPV pilots (getting this aspect of RC banned).
For those confused about the whole 'licence' thing, you don't have to apply and you're covered merely by using the equipment.
Happy flying,
John
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