430MHz ALL-MODE TRANSCEIVER INCORPORATING A MICROCOMPUTER CPU control with ICOM's original programs provides various operating capabilities. A no-backlash dial controls by ICOM's unique rotary encoder circuit. The Band-edge detector and the Endless System provides out-of-band protection. Variable capacitors and dial gear are not utilized and therefore provide problem-free use. The IC-471 A/E provides FM, USB, LSB, CW coverage in the 430 ~ 440MHz (IC-471 A: 430 ~ 450MHz) frequency range. Thus the IC-471A/E can be used for mobile, DX, local calls, satellite work, and moonbounce. MULTI-PURPOSE SCANNING Memory Scan allows you to monitor all different memory channels or only those stored with a particular mode. Program Scan provides scanning between two programmed frequencies. Auto-stop scanning when a signal is received, in any mode. DUAL VFO'S AND 32 MEMORY CHANNELS Two separate VFO's can be used either independently or together for simplex operation, and any desired frequency split in duplex operation. The IC-471A/E has 32 memory channels and each channel stores the operating frequency as well as the mode, duplex/ simplex and subaudible tone frequency (IC-471 E provides provides tones only when an optional unit is installed). CONTINUOUS TUNING SYSTEM ICOM's new continuous tuning system features a luminescent display that follows the tuning knob movement and provides an extremely accurate readout. Frequencies are displayed in 7 digits representing 100MHz to 100Hz digits. Automatic recycling restarts tuning at the top of the band, i.e., the high edge when the dial goes below the low edge. Recycling changes the high edge to the low edge as well. Quick tuning in 1KHz steps is available, and fine tuning in 10Hz steps in the SSB and CW modes, and 5KHz steps and 1 KHz steps in the FM mode, is provided for trouble-free QSO. EASY-TO-READ DISOLAY The IC-471 A/E employs an easy-to-read large luminescent display. This displays the operating frequency as well as the VFO in use, operating mode, RIT snift frequency, duplex mode, scan mode, etc. EASIER OPERATION AND LIGHTER WEIGHT The IC-471 A/E is the most compact, lightest weight all-mode 430MHz transceiver. It is the first to use a pulse power supply (option) in communication equipment, for lightweight. A 50mm-diameter large tuning control knob is provided for smooth and easy tuning. Easy to use control knobs are provided for both receiving and transmitting. An LED indicates the transmit or receive mode. SUITABLE FOR BOTH FIXED AND PORTABLE STATIONS The transceiver can be operated with a self-contained 117/240V AC (option) or 12V DC power supplies. A convenient Dial Lock switch is included for mobile operation as well as an easy-carry handle. An effective Noise Blanker reduces pulse noise. The IC-SM6, high quality stand microphone (option), is suitable for fixed station operation. A powerful audio output, 2.0 watts at 8 ohm, provides easy listening even in noisy surroundings. OUTSTANDING PERFORMANCE The RF amplifier and the first mixer circuit incorporate FET's, and other circuits provide excellent Cross Modulation and Two-Signal Selectivity characteristics. The IC-471 A/E has excellent sensitivity demanded especially for mobile operation, high stability, and utilizes Crystal Filters having high shape factors and exceptional selectivity. The transmitter uses a balanced mixer in a double conversion system, a band-pass filter and a high-performance low-pass filter. This system provides distortion-free signals with a minimum spurious radiation level.