
The National RX-F33 is a vintage portable FM-AM FM stereo radio cassette recorder manufactured by National (a brand historically associated with Panasonic, particularly in Japan and other international markets). Produced in the late 1980s—specifically around 1988—it exemplifies the era’s boombox-style audio equipment, combining radio reception, cassette playback, and recording capabilities in a compact, portable design. This model was marketed primarily in Japan under the National branding, reflecting Panasonic’s global product variations due to regional trademark considerations.

RADIO SECTION
FM : 76.0 MHz – 108 MHz (Japan-Wide Band) 76.0 MHz – 90 MHz (Standard Band)
AM : 525 kHz – 1,605 kHz
TAPE RECORDER SECTION
Track System : 4-Track, 2-Channel Stereo
Tape Speed : 4.8 cm/s
Frequency response : Normal Tape: 40 Hz – 12,000 Hz, Metal Tape: 40 Hz – 14,000 Hz
S/N Ratio : 52 dB (Dolby NR ON)
Wow and Flutter : 0.1% (WRMS)
GENERAL SECTION
Speakers : 8 cm × 2 (Full-Range)
Maximum Output Power : 3.6 W + 3.6 W (EIAJ/DC), 1.8 W + 1.8 W (AC)
Power supply :
AC: 100 V, 50/60 Hz
DC: 9 V (Six R20/D-Size Batteries)
External DC: 12 V (Car Battery Via Optional Adaptor)
Power Consumption : 12 W (AC)
Battery Life (Approximate, EIAJ Standard) Continuous Playback With Alkaline Batteries: Approx. 10 Hours
Dimensions: 403 mm (Width) x 137 mm (Height) x 113 mm
Weight: 2.6 kg (Excluding Batteries)
Accessories Included
Power Cord × 1
Instruction Manual × 1
Accessories Sold Separately
FM Wireless / Wired Microphone – RD-68, RD-78
FM Wireless / Wired Microphone with Echo – RD-150
Car Adapter – RP-917
Head Cleaning Kit – RP-919
Head Demagnetizer – RP-959
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