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Specification Frequency Range: Dual band: TX: 134-174MHz and 400-480MHz; AM/FM RX: 108-180MHz,134-174MHz and 350-520MHz Channel Capacity: 809 channels Channel Spacing: 2.5/5/6.25/10/12.5/15/20/25/50KHz Modes of Emission: F3 Antenna Impendence: 50 Ohms, unbalanced(Antenna Duplexer bulit-in) Frequency Stability: ±5 PPM@-140°F~+140°F(-10℃-+60℃) Operating Voltage: -4°F~+140°F(-20℃-+60℃) Operating Temperature Range: 13.8VDC (±15%). Negative ground Current Cunsumption(Approx): RX: 0.5A (Squelched) TX: 8.0A (50/430MHz), 8.5A(29/144MHz) Case Size(WXHXD): 140x41.5x168mm (w/0 knobs & connectors) Weight(Approx): 2.2lb(1Kg) Transmitter Output Power: 50/20/10/5W(144MHz), 35/20/10/5W(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/30KHz Maximum AF Output: 2W @ 8Ω for 5% THD AF Output Impedance: 4-16Ω Package contents 1 x TYT TH-7800 Radio unit 1 x Keypad DTMF microphone 1 x Radio body mounting bracket 1 x DC power cable with fuse holder 1 x Front controller separation cable 1 x Front controller mounting bracket 1 x Screw packs & Protection fuses 1 x User manual