Ericsson GE PCS 136-174 MHz, Руководство по техническому обслуживанию

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Individual Call
Tables 4 and 6 may also be used to determine the tone
frequencies. The first digit of the code determines the tone
group used in the code (see Table 4). Then Table 5 is used
to determine the actual tone frequencies. For a code of 124,
the tone groups used are shown in Table 4. Tone A and
Tone B are both located in Tone Group 1 and Tone B is tone
number 4. Refer to the following examples for additional
information.
Example 1 - Code 098:
The digit "0" in Table 3 (First Digit of Code) shows the
Tone A is in Tone Group 4 and Tone B is in Tone Group 2
(see Table 4).
Tone number 9 in Tone Group 4 is 524.6 Hz.
Tone number 8 in Tone Group 2 is 879.0 Hz.
Example 2 - Code 265:
The digit "2" in Table 4 shows that both Tone A and
Tone B are in Tone Group 2.
Tone number 6 in Tone Group 2 is 788.5 Hz.
Tone number 5 in Tone Group 2 is 746.8 Hz.
Group Call (Quick Call Format)
In Group Call applications, the tone group is determined
by Table 5, while the frequency is determined by Table 4.
Refer to the following examples.
Example1- Group Call Code 07 (also code 27 and 37):
The digit "0" in Table 5 shows that Tone B is in Tone
Group 2 along with 20 to 29 and 30 to 39. Tone number 7
in Tone Group 2 is 832.5 Hz (see Table 4).
Example 2 - Group Call 98 (also 48 and 88):
The digit "9" in Table 5 shows that Tone B is in Tone
Group 4 along with 40 to 49 and 80 to 89. Tone number 8
in Tone Group 4 is 496.8 Hz.
Table 3 - GE Tone Generator Frequencies
TONE
GROUP
TONE
DESIGNATOR
TONE
FREQUENCY
(Hz)
A
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9 682.5
592.5
757.5
802.5
847.5
892.5
937.5
547.5
727.5
637.5
B
B0
B1
B2
B3
B4
B5
B6
B7
B8
B9 652.5
607.5
787.5
832.5
877.5
922.5
967.5
517.5
562.5
697.5
C
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9
667.5
712.5
772.5
817.5
862.5
907.5
952.5
532.5
577.5
622.5
DIAGONAL TONE 742.5
Group Call code numbers range from 00 to 99.
However, there are several Group Calls with the
same Tone B frequency. This limits the total number
of Group Calls to 40.
NOTE
LBI-38956
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