Rainbow Electronics RF12 - Manual (Page 15)

RF12
Logic connections between power control bits:
3. Frequency Setting Command
bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 POR
1 0 1 0 f11 f10 f9 f8 f7 f6 f5 f4 f3 f2 f1 f0 A680h
The 12-bit parameter F (bits f11 to f0) should be in the range of 96 and 3903. When F value sent is out of
range, the previous value is kept. The synthesizer band center frequency f
0
can be calculated as:
f
0
= 10 * C1 * (C2 + F/4000) [MHz]
The constants C1 and C2 are determined by the selected band as:
Band [MHz] C1 C2
315 1 31
433 1 43
868 2 43
915 3 30
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