HITACHI/Lo-D FT-400
¥ 49,000 (around 1974)
Commentary
AM/FM stereo tuner for color-free sound.
A 4-pole MOS FET is used in the front end of the FM tuner to achieve high sensitivity and low noise characteristics.
In addition, mechanical filters and monolithic ICs are used in the IF section to improve various characteristics.
The FM multi-circuit uses a monolithic IC to improve low distortion characteristics and separation.
Equipped with an FM muting circuit, noise between stations can be reduced.
Equipped with an adapter terminal for FM4ch broadcasting.
Model Rating
| Type | FM/AM Tuner |
| FM Tuner Section | |
| Receiving frequency | 76 MHz to 90 MHz |
| Practical sensitivity | 2 μ V (IHF) |
| Image rejection | 56dB |
| IF Rejection | 90dB |
| Total harmonic distortion factor | mono:0.25% stereo:0.6% |
| Signal-to-noise ratio | 65dB |
| Capture ratio | 1.5dB |
| Effective selectivity | 46dB |
| Stereo separation | 40dB |
| AM suppression ratio | 50dB |
| Antenna input impedance | 300 Ω Balanced Type 75 Ω Unbalanced Type |
| <AM Tuner Section> | |
| Receiving frequency | 530 kHz to 1,605 kHz |
| Practical sensitivity | 18 μ V |
| Image rejection | 50dB |
| IF Rejection | 38dB |
| Effective selectivity | 35dB |
| Signal-to-noise ratio | 46dB |
| <General> | |
| Accessory function | FM muting Output level control Antenna attenuator Discrete 4 ch output terminal Signal strength meter Center tuning meter |
| Output voltage | 0 ~ 0.5 V |
| Output impedance | 1k Ω |
| Semiconductor used | Transistor : 13 FET : 1 IC : 3 Diode : 16 pcs |
| Power supply voltage | 100 VAC, 50Hz/60Hz |
| Power consumption | 15W |
| External dimensions | Width 418x Height 137x Depth 313 mm |
| Weight | 6.5kg |