WAVECOM Decoder W74PC, W-PCI/e, W-CODE, W-CLOUD Manual V9.1.0 Transmission Modes
161
Unlicensed: ETSI TS 102 490
446.100 - 446.200 MHz (CEPT ECC/DEC/(05)12)
149.01875 - 149.11875 MHz
Licensed: ETSI TS 102 658
Licensed PMR frequency bands
FDMA, digital voice and data system
4FSK (constant envelope FSK)
Voice codec: AMBE+2 (3600 bps)
Bit rate: 4800 bps
Supported Modes
dPMR446
dPMR Mode 1
dPMR Mode 2
TS 102 490 covers only license-free hand portable equipment operating in peer-to-peer mode. The radios
should have an integral antenna and are limited in their output power. The standard is also called as
dPMR446.
TS 102 658 uses the same air interface technology as in dPMR446 without the limitations of the license-
free counterpart. It supports different levels of functionality as listed below.
Mode 1: Peer-to-peer direct network
Mode 2: Conventional repeater network
Mode 3: Managed centralized network
The current version of the dPMR decoder supports the Modes 1 and 2 as well as the license-free dPMR446
operation.
To use the mode set Offset to the IF output of the receiver. Decoded voice will be saved in a “.wav” file in
the default Data-Output directory. Use the Mute button to mute or un-mute live voice output to the
speaker. The input bits to the vocoder are saved in Hex in a separate file alongside the .wav file. This fea-
ture is useful when the voice session is encrypted. The user can analyze and try to decrypt the bits.
In the menu “Option -> Message Type” user can set decoder output to “Data & Voice Frames” or “Bit
Transparent”. With “Bit Transparent” option the frames are just output in bits and no protocol decoding is
made. This may be useful when the frames are coded in another way than according to the ETSI standard.
DTMF
The entire call number is transmitted by consecutive tones in decade sequence.
The entire call number is transmitted by consecutive tones in decade sequence.
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