Technical Data
System Bandwidth
(MHz)
Number of
channels
Boundary
channels
FVC
Transmitter frequencies
Mobile (MHz) Base (MHz)
Not used 1 990 824.010 869.010
A’’ 1 33 991 824.040 869.040
1023 825.000 870.000
A 10 333 1 825.030 870.030
333 834.990 879.990
B 10 333 334 835.020 880.020
666 844.980 889.980
A’ 1.5 50 667 845.010 890.010
716 846.480 891.480
B’ 2.5 83 717 846.510 891.510
799 848.970 893.970
Control channels FOCC System A 333 to 313
System B 334 to 354
Frequency calculation Mobile 1≤N≤799 f = 0.03×N+825.000
990≤N≤1023 f = 0.03×(N–1023)+825.000
Base 1≤N≤799 f = 0.03×N+870.000
990≤N≤1023 f = 0.03×(N–1023)+870.000
Channel spacing 30 kHz
Duplex offset 45 MHz
Signaling rate 10 kbit/s
Deviation Signaling: ±8 kHz, Speech ±2.9 kHz
POWER
LEVEL
Class 1 Class 2 Class 3 Class 4
only allowed
in digital mode
0 +36 dBm +32 dBm +28 dBm +28 dBm
1 +32 dBm +32 dBm +28 dBm +28 dBm
2 +28 dBm +28 dBm +28 dBm +28 dBm
3 +24 dBm +24 dBm +24 dBm +24 dBm
4 +20 dBm +20 dBm +20 dBm +20 dBm
5 +16 dBm +16 dBm +16 dBm +16 dBm
6 +12 dBm +12 dBm +12 dBm +12 dBm
7 +8 dBm +8 dBm +8 dBm +8 dBm
8 +8 dBm +8 dBm +8 dBm +4 dBm ±3 dB
9 +8 dBm +8 dBm +8 dBm 0 dBm ±6 dB
A +8 dBm +8 dBm +8 dBm –4 dBm ±9 dB
Unless stated otherwise, tolerance limits +2 dB and –4 dB
Output power levels (ERP) of mobiles refered to mobile class and power level
controlled by base station
IS-136 MS Technical Data
10-52