Sharp Optonica RT-3838H Stereo Cassette Deck, 1978-1979, made in Japan

Link: hifiengine | radiomuseum | thevintageknob

Specifications
Country: Japan
Manufacturer / Brand: Sharp; Osaka
alternative name Hayakawa Electric Co.Ltd.
Year: 1978/1979 Category: Sound/Video Recorder and/or Player
Semiconductors (the count is only for transistors) Semiconductors present.
Reception principle Audio-Amplification
Wave bands - without
Details Cassette-Recorder or -Player
Power type and voltage Alternating Current supply (AC) / 220 Volt
Loudspeaker - For headphones or amp.
Power out
Model: Optonica RT-3838H - Sharp; Osaka
Material Metal case
Shape Tablemodel, low profile (big size).
Dimensions (WHD) 422 x 142 x 328 mm (442 x 144 x 357mm) / 16.6 x 5.6 x 12.9 inch
Notes Dolby, APLD for up to 20 tape locations, 30-15000 Hz, digital clock.
Mentioned in -- Original prospect or advert ((A) Kapsch Geräteprogramm 1978/79 mit Sharp Importgeräteteil)

Weight: 9kg

Finish: black, silver

Type: 2-head, single compact cassette deck
Track System: 4-track, 2-channel stereo
Tape Speed: 4.75 cm/s
Heads: 1 x record/playback, 1 x erase
Tape Type: type I, FeCr, Cr02
Noise Reduction: B
Frequency Response: 30Hz to 16kHz (FeCr tape)
Signal to Noise Ratio: 60dB (dolby B)
Wow and Flutter: 0.15%
Input: 50mV (line), 0.2mV (mic)
Output: 0.775V (line)
Semiconductors: 5 x IC, 52 x Transistor, 29 x Diode, 2 x LED

Downloads
HA/HD service manual
HA/HD instruction/owners manual
HA/HD quick start guide
HA/HD schematic