Radio frequencies

Typically SkyProwler is connected to the operator/ground station by 3 separate radiolinks:

  • Radio control signal
  • Video signal
  • Telemetry radio signal

In addition SkyProwler (like many modern UAVs) also has a satellite link to the Global Position System (GPS) which utilizes frequencies of around 1.2 GHz and 1.6 Ghz.

These radio signal operate (and have to operate) on different frequencies. The chosen frequency is a compromise between 3 factors:

  • Achieving the best range and signal stability
  • Avoiding interference between the different radio signals
  • Legal requirements, which depend on the country/area the UAV is operated in

Typically the radio control signal is on 2.4 Ghz. The video signal typically is on 5.8 GHz (1.3 GHz is also common but may interfere with GPS signals). The telemetry radio signal typically is on either 433 Mhz or on 915 Mhz. The telemetry radio frequency shows the most difference between different countries/areas. Below is a table (without guarantee) of permitted telemetry radio signal frequencies:

Country/Area

USA

Continental Europe

UK

Canada

Australia (433)

Australia (915)

New Zealand (433)

New Zealand (915)

Brazil (433)

Brazil (915)

Argentina

South Africa

 

 

Frequency

915

433

433

915

433

915

433

915

433

915

915

433

Regulatory Standard

FCC 15.247

ETSI EN300 220 7.2.3

IR2030/1/10

RSS-210 Annex 8.1

LIPD-2000 item 17

LIPD-2000 item 52

Notice 2007, Schedule 1

Notice 2007, Schedule 1

ANATEL – Resolução nº 506/2008

ANATEL – Resolução nº 506/2008

Comisión Nacional de Comunicaciones

2008 RR 5.138, Government Gazette No 31127,Notice No 713 of 2008 and Government Gazette No 31290,Notice No 926 of 2008 refer