Kenwood Original TH-K20A 144 MHz FM Amateur Transceiver 5.5 Watts, RX: 136-174 MHz (Cellular Blocked) Direct Function Keys Everyday functions are pre-programmed to 11 of the 12 keys. The additional PF key can be assigned a custom function, making it possible to tailor the TH-K20A for optimum convenience. There is no need to use a menu: one key push provides direct access. And to prevent accidental operation, three types of key lock are provided. Backlit LCD and Keypad Backlighting for the large 13-segment LCD display is a welcome feature when picking memory names or changing settings. Similarly, keypad backlighting facilitates operation in low-light situations. Internal VOX The TH-K20A offers convenient hands-free operation when using an optional headset. The internal VOX (voice-operated transmission) circuitry provides automatic PTT and a 10-level (Off/1-9) sensitivity adjustment to suit different ambient noise levels. VOX delay time is also adjustable. CTCSS & DCS Encoder/Decoder + Cross Tone Capability Thanks to the built-in CTCSS (Continuous Tone Coded Squelch System) and DCS (Digital Code Squelch) encoder/decoder, the TH-K20A can handle 42 CTCSS sub-tone frequencies plus 104 DCS codes. And one can set separate TX and RX signaling types so as to access a repeater that uses different encode/ decode signaling. Power On Message  Time-out Timer  Priority Scan  Band Scan, Program Scan, MR Scan, CALL Scan, CTCSS Scan / DCS Scan  Wide/Narrow Channel Spacing  Busy Channel Lockout  Key Lock Type Select  Battery Save  SMA Antenna Connector  Automatic Repeater Offset  1,750 Hz Tone Burst  Direct Keypad Frequency Entry  DTMF Autodial Memories (16ch, up to 16 digits)  Battery Capacity Indicator (on transmit)  Electronic Serial Number