TYT MD-446 UHF VHF Portable Digital Walkie-Talkie DMR 1000CHS


TYT MD-446 UHF VHF Portable Digital Walkie-Talkie DMR 1000CHS


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TYT MD-446 DMR Walkie Talkie


  1. Frequency band UHF: 400-480MHz Or  VHF: 136-174MHz
  2. 1000 channels
  3. Battery Capacity:2000mAh
  4. Dual antenna
  5. Remote kill/stun/activate
  6. Clock
  7. Talkaround
  8. Emergency Call
  9. Manual Dial
  10. Remote monitor
  11. Remote check
  12. Voice protection
  13. Lone Worker
  14. Programming password
  15. Power-on protection
  16. Color LCD display
  17. Text messages in digital mode
  18. Encryption function
  19. Built-in CTCSS/DCS
  20. Up to 1000 channels
  21. Priority scan
  22. Complying with digital protocol ETSI TS 102 361-1,-2,-3
  23. Compatible with Mototrbo Tier 1 2
  24. DTMF decoding and encoding
  25. Updated software available for new features
  26. Private call, group call, all call in digital mode.
  27. Operate in both Digital & Analogue mode ,allows easily migrate from analog to digital
  28. Provide clearer voice communications in digital mode ,throughout the coverage area


General Specifications
Frequency range UHF:400-480MHz Or  VHF: 136-174MHz
Channel 1000 Channels
Channel Spacing 12.5KHz
Operating Voltage 7.4V
Battery Capacity Li-ion 2000mAh
Operating Temperature -30C+60C
Store Temperature -40C+85C
Antenna Impedance 50 ohm
Audio Output Power <=1000mW 16ohm
Dimension(H*W*D) 131*61*36mm(Not Including Antenna)
Weight 258g


Output power High<=5W(HI) Low<=1W(Low)
Frequency Stability 1.0PPM
Adjacent Channel Power <=-60dB
Free Time Slot Power TDMA<=57dBm
Hum and Noise -40dB 12.5KHz
Spurious Radiation Atenna:9KHz-1GHz <=-36dBm
1GHz-12.75GHz <=-30dBm
FM Modulation Mode 12.5KHz:11K0F3E
4FSK Digital Mode 12.5KHz(data only):7K60FXD
12.5KHz(data +voice):7K60FXE
Modulation Maximum Deviation 2.5KHz 12.5KHz
Nonactive Slot Power -57dBm
Digital Protocol ETSI TS 102 361-1 -2 -3
Vocoder Type AMBE+2TM
Audio Response +1dB~-3dB
Modulation BER(Bit Error Rate) <=5%


Analog sensibility 0.35µV/-116dBm(20dB SINDA)
Digital sensibility 0.3µV/-117.4dBm (BER 5%)
0.22µV/-110dBm (BER 1%)
Co-channel Rejection >=-12dB
Adjacent Channel Selectivity TIA603C:65dB ETSI:60dB
Spurious Response TIA603C:75dB ETSI:70dB
Rated audio power 1W
Audio response +1dB –3dB
Rated audio distortion 3%(Type)
Spurious Radiation Antenna:9KHz-1GHz <=-57dBm
1GHz-12.75GHz <=-47dBm

Package Include:

    1 x TYT MD-446 Digital 2-ways Radio (DMR)
    2 x Antenna
    1 x Li-ion Battery
    1 x Belt Clip
    1 x Charger EU/US
    1 x Adapter
    1 x User’s Manual
Weight 1 kg
Dimensions 280 × 200 × 80 cm
Frequency Range

VHF 136-174MHz, UHF 400-480MHz


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