XBee-PRO 900HP Available Frequencies

USA/Canada
Part numbers ending in 001/002
AF = 0xFFFFFFFFFFFFFFFF
Channels: 0 - 63
Frequency: 902.4 - 927.6 MHz

Bit (Channel)   0 – 902.400    Bit (Channel) 32 – 915.200
Bit (Channel)   1 – 902.800    Bit (Channel) 33 – 915.600
Bit (Channel)   2 – 903.200    Bit (Channel) 34 – 916.000
Bit (Channel)   3 – 903.600    Bit (Channel) 35 – 916.400
Bit (Channel)   4 – 904.000    Bit (Channel) 36 – 916.800
Bit (Channel)   5 – 904.400    Bit (Channel) 37 – 917.200
Bit (Channel)   6 – 904.800    Bit (Channel) 38 – 917.600
Bit (Channel)   7 – 905.200    Bit (Channel) 39 – 918.000
Bit (Channel)   8 – 905.600    Bit (Channel) 40 – 918.400
Bit (Channel)   9 – 906.000    Bit (Channel) 41 – 918.800
Bit (Channel) 10 – 906.400    Bit (Channel) 42 – 919.200
Bit (Channel) 11 – 906.800    Bit (Channel) 43 – 919.600
Bit (Channel) 12 – 907.200    Bit (Channel) 44 – 920.000
Bit (Channel) 13 – 907.600    Bit (Channel) 45 – 920.400
Bit (Channel) 14 – 908.000    Bit (Channel) 46 – 920.800
Bit (Channel) 15 – 908.400    Bit (Channel) 47 – 921.200
Bit (Channel) 16 – 908.800    Bit (Channel) 48 – 921.600
Bit (Channel) 17 – 909.200    Bit (Channel) 49 – 922.000
Bit (Channel) 18 – 909.600    Bit (Channel) 50 – 922.400
Bit (Channel) 19 – 910.000    Bit (Channel) 51 – 922.800
Bit (Channel) 20 – 910.400    Bit (Channel) 52 – 923.200
Bit (Channel) 21 – 910.800    Bit (Channel) 53 – 923.600
Bit (Channel) 22 – 911.200    Bit (Channel) 54 – 924.000
Bit (Channel) 23 – 911.600    Bit (Channel) 55 – 924.400
Bit (Channel) 24 – 912.000    Bit (Channel) 56 – 924.800
Bit (Channel) 25 – 912.400    Bit (Channel) 57 – 925.200
Bit (Channel) 26 – 912.800    Bit (Channel) 58 – 925.600
Bit (Channel) 27 – 913.200    Bit (Channel) 59 – 926.000
Bit (Channel) 28 – 913.600    Bit (Channel) 60 – 926.400
Bit (Channel) 29 – 914.000    Bit (Channel) 61 – 926.800
Bit (Channel) 30 – 914.400    Bit (Channel) 62 – 927.200
Bit (Channel) 31 – 914.800    Bit (Channel) 63 – 927.600

Australia
Part numbers ending in 021/022
AF = 0xFFFFFFFE00000000
Channels: 33 - 63
Frequency: 915.6 - 927.6 MHz

Bit (Channel) 33 – 915.600    Bit (Channel) 49 – 922.000
Bit (Channel) 34 – 916.000    Bit (Channel) 50 – 922.400
Bit (Channel) 35 – 916.400    Bit (Channel) 51 – 922.800
Bit (Channel) 36 – 916.800    Bit (Channel) 52 – 923.200
Bit (Channel) 37 – 917.200    Bit (Channel) 53 – 923.600
Bit (Channel) 38 – 917.600    Bit (Channel) 54 – 924.000
Bit (Channel) 39 – 918.000    Bit (Channel) 55 – 924.400
Bit (Channel) 40 – 918.400    Bit (Channel) 56 – 924.800
Bit (Channel) 41 – 918.800    Bit (Channel) 57 – 925.200
Bit (Channel) 42 – 919.200    Bit (Channel) 58 – 925.600
Bit (Channel) 43 – 919.600    Bit (Channel) 59 – 926.000
Bit (Channel) 44 – 920.000    Bit (Channel) 60 – 926.400
Bit (Channel) 45 – 920.400    Bit (Channel) 61 – 926.800
Bit (Channel) 46 – 920.800    Bit (Channel) 62 – 927.200
Bit (Channel) 47 – 921.200    Bit (Channel) 63 – 927.600
Bit (Channel) 48 – 921.600    

Brazil
Part numbers ending in 011/012
AF = 0xFFFFFFFE00000FFF
Channels: 0 - 11, 33 - 63
Frequency: 902.4 - 906.8 MHz, 915.6 - 927.6 MHz

Bit (Channel)   0 – 902.400    Bit (Channel) 43 – 919.600
Bit (Channel)   1 – 902.800    Bit (Channel) 44 – 920.000
Bit (Channel)   2 – 903.200    Bit (Channel) 45 – 920.400
Bit (Channel)   3 – 903.600    Bit (Channel) 46 – 920.800
Bit (Channel)   4 – 904.000    Bit (Channel) 47 – 921.200
Bit (Channel)   5 – 904.400    Bit (Channel) 48 – 921.600
Bit (Channel)   6 – 904.800    Bit (Channel) 49 – 922.000
Bit (Channel)   7 – 905.200    Bit (Channel) 50 – 922.400
Bit (Channel)   8 – 905.600    Bit (Channel) 51 – 922.800
Bit (Channel)   9 – 906.000    Bit (Channel) 52 – 923.200
Bit (Channel) 10 – 906.400    Bit (Channel) 53 – 923.600
Bit (Channel) 11 – 906.800    Bit (Channel) 54 – 924.000
Bit (Channel) 33 – 915.600    Bit (Channel) 55 – 924.400
Bit (Channel) 34 – 916.000    Bit (Channel) 56 – 924.800
Bit (Channel) 35 – 916.400    Bit (Channel) 57 – 925.200
Bit (Channel) 36 – 916.800    Bit (Channel) 58 – 925.600
Bit (Channel) 37 – 917.200    Bit (Channel) 59 – 926.000
Bit (Channel) 38 – 917.600    Bit (Channel) 60 – 926.400
Bit (Channel) 39 – 918.000    Bit (Channel) 61 – 926.800
Bit (Channel) 40 – 918.400    Bit (Channel) 62 – 927.200
Bit (Channel) 41 – 918.800    Bit (Channel) 63 – 927.600
Bit (Channel) 42 – 919.200    

Singapore
Part numbers ending in 041/042
AF = 0x00FFE00000000000
Channels: 45 - 55
Frequency: 920.4 - 924.4 MHz

Bit (Channel) 45 – 920.400
Bit (Channel) 46 – 920.800
Bit (Channel) 47 – 921.200
Bit (Channel) 48 – 921.600
Bit (Channel) 49 – 922.000
Bit (Channel) 50 – 922.400
Bit (Channel) 51 – 922.800
Bit (Channel) 52 – 923.200
Bit (Channel) 53 – 923.600
Bit (Channel) 54 – 924.000
Bit (Channel) 55 – 924.400

Note: Channel 19 (910.000MHZ) is disabled by default in the CM (Channel Mask Parameter). ?This channel has approximately 2 dBm worse receiver sensitivity than other channels.
It is suggested that this channel not be used if possible.
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As an example, to maximize separation between 4 different networks you could set each network with the following Channel Mask (CM parameter):
 
Network 1:  Lowest 25 channels  CM=0X0000000081FFFFFF
Network 2:  Middle 25 channels  CM=0X00001FFFFFF00000
Network 3:  Highest 25 channels  CM=0xFFFFFF8000000000
Network 4:  Every other channel (low end, high end) CM=0x1555555555555 or 2AAAAAAAAAAAA

The mask for a network with the 25 channels spread (as evenly as possible) across the entire spectrum: CM=4545455545454545
You can minimize collisions by using unicast and retries.
Hops do not happen during the transmission of a packet.  Each new packet will be on a different channel.
Here is a link to a Channel Mask Calculator