RETEVIS HD1 136-174&400-480MHz&76-107.95MHz 3000CHS Dual Band DMR Digital Waterproof Two Way Radio Handheld Walkie Talkie,

1. Use the digital mobile radio (DMR) layer 2 standard protocol. It is compatible with other brands and models of popular MOTO TRBO series Tier I and II that use standard encryption and other DMR-enabled radios. It is also compatible with any existing analog two-way radios operating on supported UHF and VHF frequencies and can be easily ported to digital technology. Almost all operations can be done through the wireless keyboard
2. It also has many functions, such as send/receive interrupt, CTCSS&DCS, VOX, surveillance, emergency alert, scan, key lock, TOT, password lock, power saving, remote kill/stun/activate, analog and digital combination, LED Indicator lights, voice prompts, etc.
3. Frequency: 136-174&400-480MHz&76-107.95MHz (receive only)
4. Channel: 3000
5. Working voltage: 7.4V DC
6. Battery capacity: 3200mAh
7. Antenna impedance: 50 ohms
8. Size: 150 x 64x 40mm
9. Weight: 360g (including battery)

Transmitter:
1. Power: UHF: 8w: 4w: 1w, VHF: 10w: 5w: 1w
2. Frequency stability: +/-1.0ppm
3. FM modulation mode: 12.5KHz@11K0F3E 25KHz @ 16K0F3E
4. Modulation distortion: less than 5%
5. Vocoder: AMBE + 2TM
6. Adjacent channel power: 60dBm@12.5KHz 65dBm @ 25KHz
7. Audio response: +1 to -3dB
8. Digital protocol: ETSI-TS102 361-1, -2, -3

Receiver:
1. Digital sensitivity: 0.30uV / -117dBm (BER 5%), 0.70uV / -110dBm (bit error rate 1%)
2. Adjacent channel selectivity: TIA603C: 65dB ETSI: 60dB
3. Spurious response: TIA603C: 75dB ETSI: 70dB
4. Audio response: +1 to -3dB
5. Rated audio distortion: less than or equal to 3% (type)
6. Audio power: greater than or equal to 500mW