AnyTone AT-779UV Mobile Radio VHF UHF Dual Band 200CH 25W FM Mobile Car Radio Walkie Talkie 1. Frequency Range: VHF: 144-146MHz (136-174MHz), UHF: 430-440MHz (400-490MHz), FM: 86.7-108MHz 2. Number of Channels: 200 3. Channel spacing: 25KHz(Wide Band), 12.5KHz (Narrow Band) 5. Phrase-lock step: 2.5KHz, 5Khz, 6.25KHz, 10KHz, 12.5KHz, 15KHz, 20KHz, 25KHz, 30KHz, 50KHz 6. Operating voltage (ordinary): DC 13.8V+-15% 7. Operating voltage (wide voltage): DC 12-28V 8. Squelch method: CarrierCTCSSDCS5tone2toneDTMF 9. Frequency stability: +-2.5ppm 10. Operating Temperature: -20~+60 degree C 11. Dimensions: 124 (W) x 101(D) x 36 (H)mm 12. Weight: About 0.45Kg Transmitter Part 1. Power Output: (UHFVHF)Wide Band Narrow Band: 25W10W5W 2. Modulation: Wide Band: 16K x F3E, Narrow Band: 11K x F3E 3. Adjacent Channel Power: Wide Band: >=70dB, Narrow Band: >=60dB 4. Hum & Noise: Wide Band: >=40dB,Narrow Band: >=36dB 5. Spurious Emission: Wide Band: >=60dB, Narrow Band: >=60dB 6. Wide Band: Audio Response: +1~-3dB (0.3~3KHz), Narrow Band: +1~-3dB (0.3~3KHz) 7. Audio Distortion: ==45dB, Wide Band: >=40dB 5. Audio distortion: 3% 6. Audio power output: >2W@10%