Digital Mobile Radio (DMR), Model LCR of STUAM, is a open Digital Mobile Radio standard defined in the European Telecommunications Standards Institute (ETSI) Standard TS 102 361 parts 1–4 and used in public safety and commercial solutions around the world.
Digital Mobile Radio (DMR), Model LCR of STUAM, is a open Digital Mobile Radio standard defined in the European Telecommunications Standards Institute (ETSI) Standard TS 102 361 parts 1–4 and used in public safety and commercial solutions around the world. DMR, uses proprietary AMBE+2 vocoder and two-slot TDMA in a 12.5 kHz channel. It offers both voice and data communications and interfacing to external networks. Voice communications offer features as call alert, emergency call, remote monitoring, silent worker, Push-to-Talk ID, radio check, all call, stunning etc. It also offers Greater call capacity, More reliability, Security features, Better call quality, Privacy features, Longer battery life, increased spectrum efficiency. DMR are offered in VHF and UHF bands meets MIL-STD-810F/G spec .
| Frequency Band | VHF & UHF |
| Frequency Range | VHF 136-174 MHz UHF 400-470 MHz, 800-890MHz |
| Type | Duplex/Semi duplex |
| TDMA | 2- slot |
| Type of modulation | DMR ETSI- standards with capability of Analog channels |
| Channel Spacing/Channel Separation | 12.5/25 kHz |
| No. Of contacts ( individual/group call ) | 1000 or better |
| Channel Capacity/ No. of Channels | 1000 or better |
| Antenna Impedance | 50 ohm |
| Display | Alphanumeric |
| VSWR | Better than 1.5 |
| Interoperability with minimum 2 vendors | Required |
| Dimensions (H x W x D) | (200 x 80 x 40) mm or better |
| Weight (with Antenna & Battery) | ≤ 400 g |
| Emission | 11K0F3E, 7K60FXE,7K60FXD, 7K60FXW |
| Digital / Analog Battery Life, High Capacity Battery | 2600 mAh and will charge within 2-4 hrs |
| Power Supply (Nominal) | - |
| Standards Supported | IEEE 802.11b, 802.11g, 802.11n |
| Security Protocol Supported | WPA, WPA-2, WEP |
| Maximum Number of SSIDs | 128 |
| Version | 4 |
| Range | 10 m |
| Simultaneous Connections | 1 x audio accessory and 1 x data device |
| Permanent Discoverable Mode | Optional |
| Constellation Support | IRNSS/GPS/AGPS/GLONASS/BEIDOU |
| Time To First Fix, Cold Start | < 32 s |
| Time To First Fix, Hot Start | < 1.5 s |
| Horizontal Accuracy | < 1.5 m |
| 4FSK Digital Modulation | 12.5 kHz Data: 7K60F1D and 7K60FXD, 12.5 kHz Voice: 7K60F1E and 7K60FXE, Combination of 12.5 kHz Voice and Data: 7K60F1W |
| Modulation Deviation | ± 2.5 kHz at 12.5 kHz |
| Digital Vocoder | AMBE+2 |
| Digital Protocol | ETSI TS/DMR open standard |
| Conducted/Radiated Emissions (TIA603D) | -36 dBm < 1GHz, -30 dBm > 1GHz |
| Adjacent Channel Power | 60 dB (12.5 kHz channel), 70 dB (25 kHz channel) |
| FM Hum and Noise | -34 dB @ 12.5 kHz |
| Frequency Stability | ± 0.5 ppm |
| Power output at antenna port | 5 Watt programmable to 1 Watt |
| Modulation Sensitivity | 1 to 10 mV at 1 kHz at mic. Input for (+/-)1.5 kHz (for 12.5 kHz channel spacing) standard deviation |
| Modulation Distortion | Less than 3% at 1 kHz reference for (+/-) 1.5 kHz (for 12.5 kHz channel spacing) standard deviation |
| Modulation Fidelity / Audio Response | (+) 1, (-) 3 dB for 6 dB/Octave Pre-emphasis characteristic from 350 Hz to 2700 Hz with 1 kHz as reference |
| Spurious emission | Better than 70 dB |
| Transmitter Output impedance | 50 Ω |
| Frequency Generation | Frequency Synthesized Oscillator |
| VSWR | Better than 1.5 |
| Analog Sensitivity (12 dB SINAD) | Better than 0.25 µV for 12 dB SINAD |
| Digital Sensitivity (5% BER) | 0.18 µV with BER<5% |
| Intermodulation (TIA603D) | Better than 60 dB |
| Adjacent Channel Selectivity, (TIA603A)-1T | 1 W |
| Adjacent Channel Selectivity, (TIA603D)-2T | Better than 60dB for 12.5 kHz channel separation |
| Spurious Rejection (TIA603D) | 65 dB or better |
| Hum and Noise | -34 dB @ 12.5 kHz, -40 dB @ 25 |
| Squelch Sensitivity | 0.18 µV |
| Operating Temperature | MIL STD 810 C/DE/F/G Pro I & II |
| Thermal Shock | MIL STD 810 C/DE/F/G Pro I & II |
| Humidity | MIL STD 810 C/DE/F/G Pro I |
| Dust and Water Intrusion | IP 67 or better |
| Salt Fog | MIL STD 810 C/DE/F/G Pro I |
| Shock test transit drop | MIL STD 810 C/DE/F/G Pro I & IV |
| Vibration (Minimum integrity)/ Vibration Test | MIL STD 810 C/DE/F/G Pro I & II |
| Sand dust blowing | MIL STD 810 C/DE/F/G Pro I & III |
| Rain (blowing rain) Test | MIL STD 810 C/DE/F/G Pro I, II & III |
| Solar radiation test | MIL STD 810 C/DE/F/G Pro I |
| Packaging Test | MIL-STD 810D and E |