4-GANG VARIABLE CAPACITOR FRONT END The precision engineered front end utilizes a 4-gang air spaced variable capacitor and FET (field effect transistor) first stage radio frequency amplifier circuit. All characteristics affecting top performance, including selectivity, imaging and spurious rejection, signal to noise ratio and other factors, are developed to optimum levels. HIGH STABILITY FM IF SECTION Three dual element phase linear ceramic filters are employed in the intermediate frequency amplifier circuit. High density IC circuitry incorporates a 3-stage differential amplifier, diode limiter, and quadrature detector to yield effortless selectivity plus superb S/N and distortion characteristics. Capture ratio is also significantly improved. SUPERIOR FM PROGRAM RECEPTION A revolutionary phase-locked loop (PLL) circuit assures high stability in the vital stereo demodulator, Impervious to the effects of ambient temperature and aging, this innovation always allows optimum frequency response and separation. The output circuit contains built-in low pass and subsonic filters which block extraneous noise produced in the ultra high and ultra low ends of the frequency spectrum. The result is clear and stable FM stereo reproduction. ADVANCED IC AM TUNER Full performance is built into the AM tuner through IC and ceramic filter circuitry, providing improved selectivity and frequency response, together with minimized spurious interference and distortion. The balanced mixer circuit further enhances spurious characteristics to permit refreshing AM sound even in strong signal areas. DUAL FUNCTION MUTING CIRCUIT Annoying interstation noise and tuning noise are completely eliminated by the carefully designed muting circuit. The circuit incorporates a semiconductor switch and reed relay to provide comfortable station selection. VERSATILE ACCESSORY FACILITIES FM MPX NOISE Filter: Can be employed to eliminate objectionable high frequency noise from FM stereo broadcasts. 2 Sets of OUTPUT Jacks plus OUTPUT LEVEL Control: VARIABLE jacks, which feature adjustable output level, and non-variable FIXED output jacks are both provided. FM MULTIPATH Jacks: Provided for connection of an oscilloscope or stereo display. FM antenna orientation and height can then be monitored for minimum multipath interference.