144MHz ALL-MODE TRANSCEIVER INCORPORATING A MICROCOMPUTER CPU control with ICOM’s original programs provides various operating capabilities. No-backlash dial controlled by ICOM’s unique photo-chopper circuit. Band-edge detector and Endless System provides out-of-band protection. No variable capacitors or dial gear, giving problem-free use. The IC-251A/E provides FM, USB, LSB, CW coverage in the 144~146MHz (IC-251A:143.8 ~148.2MHz) frequency range. Thus the IC-251A/E can be used for mobile, DX, local calls, and satellite work.