Quelle-frequence

(extrait de [7 ANFR])

169,4 à 169,475 MHz

500 mW p.a.r.

Canalisation : 12,5 kHz

Radiometrix NTX2: 434.075MHz, 434.650MHz and 458.700MHz

Available for licence-exempt operation in the 433MHz (EU) and 458MHz (UK)

And the winner is: APRS

• Frequency 144.800 MHz (Europe) => license needed
• Narrow FM modulation, coding either:
  • AFSK 1200 (1200 + 2200Hz bits coding)
  • FSK 9600