RELM RPV599A Plus Field Programmable Two Way Portable 148-174 MHz Includes Alphanumeric Display The RELM RPV599A PLUS high band two way portable operates in the 148-174 MHz frequency range. Standard features include two-tone sequential decode, sixteen digit automatic number identification (ANI), DTMF encode/decode and field programmable keyboard programming. The included wireless cloning feature allows the copying of information from one RPV599A PLUS to another, or to several at once, without the need for external equipment. Other built in features of the RPV599A PLUS include priority, home channel and talkback scanning operation, CTCSS/DCS, busy channel lockout, 99 programmable channels included, alphanumeric display, and transmit timeout timer.re