AIWA TPR-150
¥ 39,800 (around 1975)
Commentary
3-band compatible radio cassette.
Tuner section
The tuner section supports 3 bands of FM/SW/MW, and is designed with high sensitivity and high selectivity.
A 3-row varicon is used for the circuit, the FM high-frequency section is a 2-stage tuning system, the IF circuit is a 4-stage amplification system, and a ceramic filter and a large ferrite bar antenna (160 mm) are used.
Equipped with AFC switch.
Turning this function on prevents the FM tuning from being out of sync due to temperature and voltage fluctuations, enabling stable reception. When receiving weak radio waves between stations with strong radio waves, turn the switch off.
Equipped with a tuning indicator, it is designed so that the same vertex can be easily recognized.
When tuning the radio in a dark place, press the dial button to increase the brightness of the dial plate and improve visibility.
Recording / Playback / Speaker section
A BTL circuit using two ICs is adopted for the amplifier section, and the performance is improved by adopting the ITL-OTL system.
The amplifier output is a maximum practical output of 3,000 mW (EIAJ/DC).
A 2-way speaker system is used for the speaker section.
It features a 5.2 cm cone tweeter in the high range, a 13x18cm elliptical cone woofer in the low range, and an LC-type crossover network in the interior to bring out the effects of a speaker system.
Bass treble With independent tone control, you can freely adjust it to your preference.
It has a built-in loudness, so you can increase the impact at low volume.
Equipped with a tape selector for chrome tapes.
Equipped with a variable sound monitor function, you can freely change the volume and sound quality during recording and listen to it with built-in speakers or earphones.
The recording circuit and sound circuit are separate, so they do not affect the recording level.
Equipped with a 2-way meter, battery check and recording level check can be checked.
Equipped with a mixing mechanism.
Mechanical part
It has a memory replay mechanism.
The combination of the memory counter and memory mechanism enables one touch automatic cue and automatic playback. Also, if this mechanism is activated while the radio is recording, the selector switch from the radio to the tape recorder can be performed automatically and accurately, enabling one touch playback.
A mechanical full auto-stop mechanism is adopted, and the tape stops automatically when the tape finishes winding in both recording / playback / fast forward / rewind, and the power is turned off.
This prevents tape damage and unnecessary battery consumption.
Low torque during FWD has been realized, and excellent wow flutter has been realized.
With review & Queue, you can easily fast-forward a song or start a previous song.
Equipped with a mechanical pose.
Equipped with a 3-digit tape counter.
Equipped with a sleep timer switch.
When the sleep switch is ON and the tape is inserted, the power is turned on. And at the end of the winding, the auto stop operates and the power is turned off.
It is a 3-power system and supports battery, AC power source and car battery.
There was a carrying case as an optional item sold separately.
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Model Rating
| Type | Cassette recorder with 3-band (FM/SW/MW) radio |
| Tape Recorder Unit | |
| Built-in microphone | Electret condenser microphone |
| Tape speed | 4.8cm/sec. |
| Recording system | AC bias |
| Erasing method | AC Erase |
| Frequency characteristic | 50 Hz ~ 12 kHz (Normal Tape) 50 Hz ~ 13 kHz (CrO2 Tape) |
| Signal-to-noise ratio | 55dB |
| Wow flutter | 0.14%(WRMS) |
| Radio Club | |
| Receiving frequency | FM : 76 MHz to 90 MHz SW : 3.9 MHz to 12 MHz MW : 525 kHz to 1,605 kHz |
| Antenna | FM : Whip Antenna MW : ferrite bar antenna SW : Whip / Ferrite Bar Antenna Combination |
| <Common Part> | |
| Maximum practical power | 3,000mW(EIAJ/DC) |
| Spekers | Low Band : 18.4x12.7 cm Oval Cone For high pass : 5.2 cm cone type |
| Semiconductor used | IC : 4 Transistor : 18 Diode : 13 pcs |
| Pwer | AC Power : 100 VAC, 50Hz/60Hz Battery Power Source : 9 VDC (UM-1x6) Car battery (combined with car adapter) |
| External dimensions | Width 350x Height 210x Depth 97 mm |
| Weight | 3.95 kg (excluding battery) |
| Attachment | AC power cord |
| Sold Separately | Carrying Case LC-150 (¥ 2,800) |