TYT Walkie Talkie TH-7800 50W 136-174/400-480MHz Mobile FM Transceiver TH7800 Features: V+U Full Duplex Operation Cross-band Repeater Function Ultra-size LCD Screen Dual Display 800+Memory Channels A+B dual band Operation 50 CTCSS Tones /1024 DCS Codes 8 Group;s scrambler option Detachable Front Panel 50W output power for 144MHz 35W output power for 430MHz Specifications: Item Number TH-7800 General Frequency Range Dual band:TX: 134-174MHZ and 400-480MHZ RX(AM and FM):108-180mhz, 134-174MHZ and 350-520mhz Channel Capacity 809 Channels Channel Spacing 2.5 /5 /6.25 /10 / 12.5 /15 /20 /25 /50 kHz Modes of emission F3 Antenna Impedance 50 Ohms,unbalanced (Antenna Duplexer built-in) Frequency Stability ±5PPM@-140℉~+140℉(-10℃～+60℃) Operating Voltage -4℉~+140℉(-20℃～+60℃) Operating Temperature Range 13.8VDC (±15%),Negative ground Current Consumption(Approx) RX:0.5A(Squelched) TX:8.0A(50/430MHZ),8.5A(29/144MHZ) Case size（W×H×D） 140*41.5*168 mm (w/o knobs & connectors) Weight 1000g Transmitter output power 50/20/10/5W( 144MHZ),40/20/10/5W(430MHZ) Modulation Type Variable Reactance Maximum Deviation Better than -60dB(29MHZ: Better than -50dB) Modulation Distortion Less than 3% Microphone Impedance 2kΩ Receiver Circuit Type Double-conversion super-heterodyne Intermediate Frequency 49.95MHz/450KHz (left band) 38.85MHz/450KHz (right band) Sensitivity (for 12dB SINAD) Better than 0.2μV Squelch Sensitivity Better than 0.16μV Selectivity(-6dB/-60dB) 12KHz/30 KHz Maximum AF output 2W@8Ω for 5% THD AF output Impedance 4-16Ω Standard Package: 1 x Mobile Radio 1 x Speaker Mic With Keyboard. 1 x Power Cable set 1 x Installation Bracket 1 x Installation Kits (Screws .etc) 1 x User Manual in English