Alpinist 321 Shema Apr 2026

The Alpinist 321 was designed as a "3rd class" portable receiver, prioritizing reliable reception in the Long Wave (LW) and Medium Wave (MW) bands over high-fidelity audio.

The output power is rated at 500 mW nominal (800 mW maximum), driving a frequency range of 200–3550 Hz . This makes it suitable for speech and news broadcasts rather than music.

Detailed alignment frequencies for the heterodyne and antenna circuits include 1630 kHz (MW) and 145 kHz (LW), with IF (Intermediate Frequency) set to 165 kHz . alpinist 321 shema

The (later renamed Alpinist RP-321 under new GOST standards in 1987) is a portable Soviet-era superheterodyne radio receiver produced by the Voronezh Polus enterprise starting in 1986. Technical Review & Performance

The Alpinist 321 schematic reveals a classic superheterodyne architecture typical of late-Soviet consumer electronics: The Alpinist 321 was designed as a "3rd

It features a dual-band design covering LW (148.5–283.5 kHz) and MW (526.5–1606.5 kHz) . Using its internal magnetic antenna, it achieves a sensitivity of 1.5 mV/m on LW and 0.7 mV/m on MW, with a selectivity of 30 dB.

The unit is highly portable at 850g and can be powered by four A-343 battery elements or via an external 9V power supply. Circuitry & Schematic (Shema) Using its internal magnetic antenna, it achieves a

Портативный радиоприёмник ''Альпинист-321''.