Page 18 of 33
A1101R09x – User’s Manual
Release Date 05/08/12
2.3.1. USA & Canada
Within the USA and Canada, the modules have been approved for use as digitally modulated
transmitters, for which they must have a minimum occupied bandwidth (6dB bandwidth) of
500kHz. In addition, the spectral density may not exceed 8dBm/3kHz and the total output power
including antenna gain may not exceed 1W.
Table 3
shows configurations that are compliant with
this use and the expected performance.
Table 3 FCC Approved configurations with max. allowed output power
In order to meet the band edge requirements, the center frequency of the operating channel has
to be chosen between
F
o
min
and
F
o
max
. Also, the power levels provided in
Table 3
are the max
allowed power levels for each configuration, however, the user is encouraged to use minimum
power required to establish a link in order to minimize interference. For available power levels
from the module, please refer to
Table 4
.
It is encouraged to use a medium access technique which should include addressing of
individual transceiver nodes; and should include a combination of a clear channel assessment,
transmit and detect, or a frequency hopping method. This ensures that the un-licensed band
can be shared with other systems/applications.
Table 4 Output Power vs. PA Table Value
Modulation Datarate (kB) 6-dB BW (kHz) PSD (dBm) Power Table (Hex) F
o
min (MHz) F
o
max (MHz)
2-FSK
1.2
530
6.84
0xCB
902.49985
927.58578
2-FSK
38
535
6.88
0xCA
902.49985
927.58578
2-FSK
250
540
3.68
0xC0
902.49985
927.58578
MSK
425
515
1.26
0xC0
902.8093
927.28586
MSK
500
585
1.35
0xC0
902.8093
927.28586
Power (dBm) PA_TABLE (Hex) Power (dBm) PA_TABLE (Hex)
Power (dBm) PA_TABLE (Hex)
12.5
0xC0
7
0xCE
-3
0x64
12
0xC1
5
0x80
-4
0x56
11.5
0XC3
4.5
0x81
-5
0x67
11
0xC4
4
0x85
-6
0x8F
10.5
0xC5
3.5
0x87
-7
0x38
10
0xC7
3
0x88
-8
0x2A
9.5
0xC8
2
0x8B
-9
0x29
9
0xC9
1
0x8C
-10
0x35
8.5
0xCB
0
0x70
-15
0x24
8
0xCC
-1
0x61
-20
0x19
7.5
0xCD
-2
0x5B
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