NATIONAL RQ-520 FM/AM Radio Cassette Recorder

Power Source: AC 100V 50/60Hz DC 6V (Uses 4 D Batteries)
Car Battery 12V (Uses Optional Car Adapter RP-915)
Power Consumption: Approximately 6 W
Practical Maximum Output
1,300mW (EIAJ Distortion Rate 10%)
Battery Life: Continuous Recording Time: Approx. 6 Hours (Using National Hi-Top)
Transistor Used Audio Amplifier Section:(17 Stones) 2SC644(2), 2SC828(6), 2SB324 (3)
(Radio Tuner Section: 2SC1047 (2), 2SC1359(4)
Diodes Used (11 Diodes): (Audio Amplifier Section) 1S2473(1), MA26(1), SR1K-2(2)
Semiconductor Used
(Barrier Tight) (1 Stone)
Head Used: Recording/Playback Head (1), Erasing Head (1)
Speaker Used: 12 cm Round Dynamic Speaker 8 Ω
Motor Used: DC Mechanical Governor Motor (1)
Recording Method: AC Bias Method 35 kHz
Elimination Method AC Elimination Method
Recording Track Method: 2 Track Mono
Level Display: 1 standalone unit (recording level, battery check tuning)
Tape Speed 4.8 cm/sec
Wow And Flutter: 0.3% Or Less
Frequency Response: 60 ~ 10,000 Hz
Signal To Noise (S/N) Ratio: 40 dB Or More
Recording/Playback Time: 1 Hour Round Trip (Using C-60 Tape)
Fast Forward And Rewind Times: 100 Seconds Or Less (Using C-60 Tape)
Mixing Function: Radio And Microphone, AUX And Microphone… (When Recording Microphone And Tape, Microphone And AUX… (Playback)
Input Terminal: Microphone Terminal (MIC) 1 circuit, 8 kΩ, -70 dB, 0.3 mV
Recommended Microphone (Unidirectional): RP-3410
(Omnidirectional) RP-3300, RP-3400, RP-3440E
Auxiliary Input Terminal (AUX) 1 Circuit, 75 kΩ, -20 dB 100 mV
Output Terminal: Monitor Terminal (EXT.SP) 1 Circuit, 8 Ω
RADIO SECTION
Receiving Frequency Band: FM 76 ~ 90 MHz, AM 525 ~ 1605 kHz
Intermediate Frequency: FM 10.7 MHz, AM 455 kHz
Reception Sensitivity: FM1 µV/50mW (Max) AM 50μV/m/50mW (Max)
External Dimensions: Width 331 mm x Depth 88 mm x Height 195 mm
Weight: About 3.1kg (Including Batteries)
ASSESORIES
Product Listening Cassette Tape (QFT6VCCNBGZ) x 1
Earphones (EAE1SB) x 1
Power Cord (QFC1064K) x 1
Erasing Plug (QJP0959K1) x 1
D Battery (SUM1D) x 4
Fanback type (QFF0017) x 1