DETAILED TYPE 99 OPERATION
AND PROGRAMMING
The original Type 99 programming provides individual,
group and super group call decode. The Motorola format two-
tone sequential signaling schemes can also be decoded.
The MDS Conventional radio can be PC programmed with
up to two separate tables of tones. Either the GE Type 99 format
or the Motorola format can be assigned to each tone table. The
tone decoder (Individual, Group and Super Group for the GE
format or Individual, Group and Quick Call for the Motorola
format) can be enabled individually for each channel. Once
enabled, one of the two tone tables can be selected for each
channel.
The Group Call format allows communication with all
radios within a subgroup. The Super Group Call (in GE tone
systems) or Quick-Call (in Motorola tone systems) allows com-
munications between all radios in a system.
GE TYPE 99 FORMAT
Tone frequencies in the GE tone system fall within the range
of 517-5 to 997.5 Hz.
In the GE 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 GE tone format is illustrated below and on the following
page:
INDIVIDUAL CALL FORMAT
1.0 SEC
±
20%
Tone A
NONE
±
25%
GAP
3.0 SEC
300%, -0%
Tone D
GROUP CALL FORMAT
1.0 SEC
±
20%
Tone A
200 MS
±
25%
GAP
3.0 SEC
300%, -0%
Tone D
SUPER GROUP CALL FORMAT
1.0 SEC
±
20%
Tone A
NONE
±
25%
GAP
3.0 SEC
300%, -0%
Tone D
For example, assume the paging number to be 123. The first
digit of the paging number is a 1. Look in Table 3 and read down
the column labeled "100’s Digit" to a 1. Read horizontally
across 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 4 and down the column labeled "Tone Designa-
tor" to find B2. Read horizontally across the column labeled
"Tone Frequency". The first tone frequency is 787.5 Hz.
To determine the second tone frequency look in Table 3 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 4 read down the column
labeled "Tone Designator" and find A3. Read horizontally
across the column labeled "Tone Frequency". 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.
Table 3 - Tone Groups
100’s
Digit
10’s
Digit
1’s
Digit
For First
Tone
For Second
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 4 - 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
DIAGONAL TONE
742.5 Hz
Tone D is a diagonal tone used (in GE 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 system are within
the range of 288.5 to 1433.4 Hz. 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 as follows:
INDIVIDUAL CALL FORMAT
1.0 SEC
(Minimum)
Tone A
NONE
GAP
3.0 SEC
(Minimum)
Tone B
GROUP CALL FORMAT
1.0 SEC
(Minimum)
Tone A
NONE
GAP
3.0 SEC
(Minimum)
Tone D
SUPER GROUP CALL FORMAT
8 SEC
TONE B
Individual Call
Tables 5 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 5). Then Table 6 is used to
determine the actual tone frequencies. For a code of 124, the
tone groups used are shown in Table 5. Tone A and Tone B are
both located in tone group 1 and Tone B is a tone number 4.
Refer to the following examples for additional information.
Example 1 - Code 098:
The digit "0" in Table 5 (First Digit of Code) shows that
Tone A is in Tone Group and Tone B is in Tone Group 2 (see
Table 6).
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 5 shows that both Tone A and Tone
B are in Tone Group 2.
Tone number 6 is 788.5 Hz.
Tone number 5 is 746.8 Hz.
The MDS radio is able to recognize the A,B, and C
tones. Individual, Group and Quick Call formas may
be used simultaneously.
NOTE
LBI-38653
LBI-38653
5
