Using equations for FM bandwidth provided by Industry Canada's TRC-43 page, the expected bandwidth for the radio communications is calculated.
Data rate: R = 9600 bps
Frequency deviation: Fdev = 3.2 kHz
For 2FSK
Bandwidth: Bn = 3.86*Fdev + 0.27*R = ~15 kHz
Doppler Shift: Fd = +/- 10 kHz (from STK)
Total expected bandwidth: B = 35 kHz