... 4. Brand: HYT 5. Model: TC510 HYT TC510 handheld portable two way radio/walkie talkie/interphone Descriptions1.CTCSS / CDCSS 2 ... lockout6.Monitor 7.Time-out timer (TOT).8.Computer programming Frequency rangeVHF: 136-174MHz; UHF:350-390MHz, 400-470MHz, 450 ... Impedance50ΩOther featuresHigh Efficency Li-Ion Battery, compact design,easy portable, High/Low power adjustable, Auto battery save, busy channel ...