In the EGE tone format, the first tone may be from tone
group A (for Individual or Group calls) or from tone group C
(for Super Group calls). The second tone may be from tone
group B (for Individual calls) or from tone group D (for
Group and Super Group calls). The EGE tone format is illus-
trated below.
For example, assume the paging number to be 123. The
first digit of the paging number is a I. Look in Table 2, and
read down the column labeled "100’s Digit" to a 1. Read
horizontally across to the column labeled "10’s Digit". The
tone group is B. The second digit of the paging number is a
2. The tone number is B2. Look in Table 3 and down the col-
umn labeled "Tone Designator" to find B2. Read horizon-
tally across to the column labeled "Tone Frequency". The
first tone frequency is 787.5 Hz.
To determine the second tone frequency look in Table 2
and as before, find the first digit of the paging number 1.
The second tone group is A. The third digit of the paging
number is a 3 and the Tone Designator is A3. In Table 3 read
down the column labeled "Tone Designator" and find A3.
Read horizontally across the column labeled "Tone Fre-
quency". The second tone frequency is 802.5 Hz.
For different paging numbers, locate the first digit in the
"100’s Digit" column and determine the tone frequencies as
described in the example. For a complete description of tone
applications see DATAFILE BULLETIN DF-5000-3A.
Tone D is the diagonal tone used (in EGE tone systems
only) when the first and second tone frequencies are the
same. The standard frequency for Tone D is 742.5 Hz, but
may be programmed with any tone frequency.
MOTOROLA FORMAT
Tone frequencies in the Motorola tone systems fall
within the range of 288.5 to 1433.4.
In the Motorola tone format, the first tone may be one of
three tones: A for Individual Call, B for Quick Call, and C for
Group Call. The second or final tone is B in all cases.
The Motorola tone format is illustrated below.
INDIVIDUAL CALL
Tables 4 and 5 may also be used to determine the tone fre-
quencies.
The first digit of the code determines the tone groups 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. 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 4 (First Digit of Code) shows that
Tone A is in Tone Group 4, and Tone B is in Tone Group 2 (See
Table 5).
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 both in Tone Group 2.
Tone number 6 is 788.5 Hz.
Tone
number
5
is
746.8
Hz.
GROUP CALL (Quick-Call Format)
ln Group Call application, the Tone Group is determined by
Table 6, while the frequency is determined by Table 5. Refer to
the following examples.
EXAMPLE 1 - Group Call Code 07 (also code 27 and 37):
The digit "0" in Table 6 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 5).
EXAMPLE 2 - Group Call Code 98 (also code 48 and 88):
The digit "9" in Table 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.
EGE FORMAT
Table 2 - TONE GROUPS
100’s
DIGIT
10’s
DIGIT
1’s
DIGIT
For 1st
Tone
For 2nd
Tone
0
1
2
3
4
5
6
7
8
9
A
B
B
A
C
C
C
A
B
Not Used
A
A
B
B
C
A
B
C
C
Table 3 - Tone Generator Frequencies
TONE
GROUP
TONE
DESIGNATOR
TONE
FREQUENCY
A
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
682.5 Hz
592.5 Hz
757.5 Hz
802.5 Hz
847.5 Hz
892.5 Hz
937.5 Hz
547.5 Hz
727.5 Hz
637.5 Hz
B
B0
B1
B2
B3
B4
B5
B6
B7
B8
B9
652.5 Hz
607.5 Hz
787.5 Hz
832.5 Hz
877.5 Hz
922.5 Hz
967.5 Hz
517.5 Hz
562.5 Hz
697.5 Hz
C
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9
667.5 Hz
712.5 Hz
772.5 Hz
817.5 Hz
862.5 Hz
907.5 Hz
952.5 Hz
532.5 Hz
577.5 Hz
622.5 Hz
The MVS radio is able to recognize the A, B, and C
tones. Individual, Group, and Quick Call formats may be
used simultaneously.
NOTE
Tone frequencies above 1000 Hz must be rounded off to
the nearest Hz when programming the tone tables. For
example, the standard tone frequency of 1153.4 Hz must
be entered as 1153 Hz. Also, the program will cause a
round-off error of
±
0.2 Hz for frequencies below 1000
Hz. These errors will not cause any decoding problems.
NOTE
Table 4 - Motorola-Type Coder Numbers
First Digit
of
Code
Group from
Which Tone A
is Selected
Group from
Which Tone B
is Selected
1
2
3
4
5
6
7
8
9
0
A
1
2
1
4
5
2
4
5
2
4
3
1
2
2
4
5
1
5
4
4
2
3
Group Call code numbers range from 00 to 99. How-
ever, there are several Group Calls with the same Tone B
frequency. This limits the total number of Group Calls to
40.
NOTE
LBI-31932
10
Summary of Contents for LBI-31932E
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