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Heathkit AJ-12

FM Stereo Tuner (1962)

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Heathkit AJ-12


The Heathkit Model AJ-12 FM Stereo Tuner is designed for high quality FM, and FM stereo reception.

The Tuner has a pre aligned, pre assembled front end, an FM circuit board, and an FM multiplex circuit board for ease of assembly.

Its many features include a tuning indicator tube, a neon lamp to indicate when a FM stereo signal is being received, and a between-station squelch circuit. The squelch circuit eliminates between-station noise when tuning from one station to another.

A heavy die-cast flywheel is used on the tuning control for smooth tuning action.

The Tuner incorporates cathode follower outputs to minimize hum and high frequency losses due to long connecting cables.

The Volume controls for the left and right channels are ganged for ease of operation.

Its many quality features make this FM Stereo Tuner a desirable addition to your hi-fi system.


Type: Mono/Stereo Tuner

Tuning Bands: FM

Tuning Scale: Analogue

FM Tuning Range: 88 to 108 MHz

Sensitivity: 2.5uV (FM)

Signal to Noise Ratio: 55dB (FM)

Distortion: 1% (FM)

Frequency response: 50Hz to 15kHz (FM)

Output: 500mV

Valve complement: 1 x 6C9, 3 x 6AU6, 1 x 12AT7, 2 x 12AU7, 1 x 12BH7, 1 x 6BN8, 1 x 6FG6

Dimensions: 5.25 x 15.5 x 10.25 inches

Weight: 14lbs

Year: 1962


assembly manual (partial)  English - bellarmine

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