Eea; Efr - Wavecom W74PC Manual

EEA

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.
Parameter
Frequency range
Operation modes
Modulation
Receiver settings
Input format(s)
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 con-
form, the call sign is displayed on the monitor. In the Options menu a Time stamp function can be ena-
bled to add date and time to each call.
Tone Allocation
Digit
0
1
2
3
4
5
6
7
Tone duration: 40 ms.

EFR

A German company operates a radio broadcast load balancing and ripple control system for electrical
power distribution networks. Short telegrams are used to control street lights, heaters, tariff switching etc.
Parameter
Frequency range
Operation modes
Modulation
Shift/Bandwidth
Symbol rate
Receiver settings
Input format(s)
WAVECOM Decoder W74PC, W-PCI/e, W-CODE, W-CLOUD Manual V9.1.0
Value
VHF/UHF
Analogue Selcal
FM, SUB Tones
FM, BW = 12 kHz
AF, IF
Hz
1981
1124
1197
1275
1358
1446
1540
1640
Value
HF
Broadcast asynchronous ASCII
FSK
340 Hz
200.0 Bd
DATA, CW, LSB or USB
AF, IF
Digit
8
9
A
B
C
D
E (REPETITION)
Hz
1747
1860
1055
930
2400
991
2110
Transmission Modes  165