P25 and C4FM Analysis for Spike
Greetings Everyone, In regards to future upgrades for Spike; C4FM Continuous 4 level FM modulation is a special type of 4FSK modulation for digital transmissions at 4800 baud and 2 bits per symbol, yielding 9600 bits per second total channel throughput. C4FM is utilized in the International APCO P25 Digital Voice Standard, which drives about …
Posted May 25, 2015