General Information
digital Private Mobile Radio (dPMR) is a digital radio protocol for voice and data communications. dPMR is a narrowband (6.25 kHz channel spacing) FDMA based protocol described in the ETSI technical standards TS102 490 and TS102 658.
Usage:
§ Professional and private voice & data communications.
Mode Details
|
|
Item |
Value |
|
Standard |
Modulation |
Multi tone |
|
|
Number of tones |
4 |
|
|
Tone spacing (Hz) |
700 |
|
|
Symbol rate (Bd) |
2400 |
|
|
Coding |
FEC |
|
Demodulator Settings |
Demodulator |
FSK 2, 3, 4 discr. |
|
|
Symbol rate (Bd) |
2400 |
|
|
SR tolerance (Bd) |
1 |
|
|
Modulation order |
4 |
|
|
Shift (Hz) |
2200 |
|
|
Shift tolerance (Hz) |
0 |
|
|
Modem type |
Synchronous |
|
Features |
Demodulation |
yes |
|
|
Recognition |
yes |
|
|
Decoding, Binary Data / Voice Data |
Yes, under development |
|
|
Automatic Polarity Adjustment |
no |
|
|
Combination with other modems (modem list) |
yes |
|
Tuning |
The tuning frequency is 240 Hz below the center peak | |
Table 7: dPMR