HITACHI/Lo-D FT-200
¥ 33,000 (around 1974)
Commentary
AM/FM stereo tuner with low noise design and high cost performance.
By using an FET in the front end of the FM tuner section, noise and interference are reduced.
A ceramic filter is used in the IF section to improve selectivity and distortion characteristics.
It is equipped with a low-pass filter in preparation for carrier leakage, which causes sound quality degradation.
Built-in FM muting circuit reduces inter-station noise.
A stabilized power supply circuit is adopted.
Model Rating
Type | FM/AM Tuner |
FM Tuner Section | |
Receiving frequency | 76 MHz to 90 MHz |
Practical sensitivity | 2.5 μ V (IHF) |
Image rejection | 50dB |
IF Rejection | 88dB |
Total harmonic distortion factor | mono:0.4% stereo:0.8% |
Signal-to-noise ratio | 60dB |
Capture ratio | 2dB |
Effective selectivity | 30dB |
Stereo separation | 38dB |
Antenna input impedance | 300 Ω Balanced Type |
<AM Tuner Section> | |
Receiving frequency | 530 kHz to 1,605 kHz |
Practical sensitivity | 20 μ V |
Effective selectivity | 25dB |
Signal-to-noise ratio | 45dB |
Image rejection | 45dB |
IF Rejection | 35dB |
<General> | |
Accessory function | Signal meter FM stereo indicator FM muting switch Stereo / monaural automatic switching AM bar antenna |
Output voltage | 0.3 V (400 Hz, 30% modulation) |
Semiconductor used | Transistor : 10 FET : 1 IC : 1 Diode : 18 pcs |
Power supply voltage | 100 VAC, 50Hz/60Hz |
Power consumption | 10W |
External dimensions | Width 312x Height 105x Depth 270 mm |
Weight | 3.3kg |