Main features: Using Time Division Multiple Access (TDMA) Digital function Dual time slot repeater Pointtopoint dual time slots Firmware Upgradable Working alone Encryption function Compatible with Mototrbo Tier I&II Single call, group call, and full call Combination of analog and digital Remote kill/stun and activate Up to 3000 channels Transmission interruption Group call matching (mixed) record Emergency alarm VOX TOT General specifications Frequency 136-174&400-480MHz Channel 3000 Frequency stability ± 1ppm Working temperature -30 & 8451;~+60 & 8451; Working voltage 7.4V DC Size 131 x 61 x 36mm Weight 258g (including battery) Battery type Lithium ion Battery capacity 2000mAh Antenna impedance 50 Ω Audio impedance 1W@16 Ω Channel spacing 12.5KHz Vocoder AMBE+2 ™ transmitter High power ≤ 5W, low power ≤ 1W Frequency stability ± 1.0ppm Adjacent channel power ≤ -60dB Idle time slot power TDMA: ≤ 57dBm Buzzing and noise -40dB@12.5KHz Stray radiation antenna: 9KHz-1GHz ≤ -36dBm 1GHz-12.75GHz ≤-30dBm FM modulation method 11K0F3E@12.5KHz 4FSK digital mode 12.5KHz (data only): 7K60FXD 12.5KHz (data and voice): 7K60FXW Passive time slot power -57dBm Digital Protocol ETSI-TS102 361-1, -2, -3 Audio response+1~-3dB Modulation BER (bit error rate) ≤ 5% Recipient Analog sensitivity 0.2 µ V @ 12dB SINAD Digital sensitivity 0.25 µ V (BER: 5%) Adjacent channel selectivity ≤ -60dB@12.5KHz Intermodulation ≤ 60dB Stray response ≥ 70dB Audio response+1~-3dB Rated audio distortion