Eea - Wavecom W40PC Manual

If errors are received the two last 32 bit blocks are retransmitted when the radio channel rate is
125 Baud and three blocks when working at 250 Baud.
Like DUP-ARQ-2, DUP-FEC-2 has many special blocks for IDLE and RQ.

EEA

Parameter
Frequency range
System
Modulation
Receiver settings
Signal source
Selective call systems are an efficient supplement to voice traffic.
The entire call number is transmitted by consecutive tones in decade sequence. When two
identical digits are to be transmitted consecutively, then an eleventh frequency is used as a
repetition identifier. If there more than two identical digits are to be transmitted the repetition
tone is appended to the digit tone (e.g. 22222 is transmitted as f2 fw f2 fw f2, where f2 is the
tone for "2" and fw is the repetition tone).
In most systems the accuracy of the single frequencies has to be within +1/-1.5% of the
nominal value.
Decoding the selective calls is started by clicking on a system. If transmission and system
selection conform, the call sign is displayed on the monitor. In the "Options" menu a "Time
stamp" function can be enabled to add date and time to each call.
Tone Allocation
DIGIT
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
TONE DURATION
140 • Transmission Modes
Value
VHF/UHF
SELCAL Analog
INDIRECT-FM
FM 12 kHz, narrow
AF (only)
EEA
1981
1124
1197
1275
1358
1446
1540
1640
1747
1860
1055
930
2246.9
991
2110
40 ms
WAVECOM Decoders v6.15 W40PC, W41PC, W51PC