cheap dual band ham radio DMR DM-980 TDMA Digital amateur radiocheap dual band ham radio DMR DM-980 TDMA Digital amateur radio Frequency Range VHF: 136-174MHz UHF: 350-390MHz; 400-470MHz;450-520MHz Channel Capacity 1024 Channel Spacing 12.5kHz / 25kHz/ 20kHz Frequency Stability 2.5PPM Operating Temperature -25~55â?? Antenna Impedance 50 © Operating Voltage 7.4V Dimension (H W D) 12653 34mm Weight (with antenna & battery) 300g Zone Capacity 64(each with a maximum of 16 channel) Battery life (5-5-90Duty Cycle, High TX power)High-capacity 2200mah Li-ion Battery Analog: above 10.5 Hour Digital: above 14 Hours Frequency Stability ±1.0ppm Battery 2000mAh Li-Poly/Ni-MH Battery 2500mAh Li-Poly/Ni-MH Battery (optional) LCD Display 1.8TFT Transmitter RF Power (H/L) UHF:4W/1W; VHF:5W/1W Modulation Type 16k ¦F3E / 8k ¦F3E Modulation Limiting 5KHz /4KHz /2.5KHz EM Distortion 5% Residual FM -45dB / -40dB Adjacent Channel Power -70dB / -60dB Spurious and Harmonics -36dBm Audio Distortion 3% Conducted/Radiated Emission -36dBm1GHz 1GHz Digital Vocoder type AMBE3000+ + Digital ETSI-TS102 361-1.-2.-3 FM Modulation 11K¦F3E 12.5KHz/14K ¦F3E 20KHz/16K ¦F3E 25KHz 4FSK Digital Modulation 12.5KHz Data Only:7K60FXD/12.5KHz Data & voice:7K60FXW FM noise 40dB 12.5KHz/43dB 20KHz/45dB 25KHz Receiver Sensitivity(Analog) 0.22uV / 0.25uV Adjacent Channel Selectivity 70dB / 60dB Sensitivity(Digital) 0.22uV/BER5% Rated Audio Distortion 3% Intermediation Reject Radio 65dB Spurious Response Reject Ratio 70dB S / N 45dB /40dB Rated Audio Power Output 1.5W Audio Response +1~ -3dB Conducted Spurious Emission