TRIO KT-7000
¥ 61,000 (around 1970)
Commentary
FM/AM tuner equipped with crystal filter and IC.
The IF amplifier, which determines the selectivity characteristics, is equipped with two crystal filters and four high-gain ICs to reduce distortion caused by Tsutomu Oire and improve stereo separation caused by Tsutomu Dainyu.
The front-end uses high-frequency two stage amplification and the mixer stage uses three FETs to improve sensitivity and S / N ratio.
2-meter tuning system allows more accurate tuning.
Model Rating
| Type | FM/AM Tuner |
| FM Tuner Section | |
| Receiving frequency | 76 MHz to 90 MHz |
| Sensitivity (IHF) | 1.5 μ V |
| Selectivity | 60 dB or more |
| Distortion factor | 0.3% or Less (400 Hz, 100% Modulation) |
| SN ratio (100% modulation, 100 μ V input) | 70 dB or more |
| Frequency characteristic | 20 Hz to 20 kHz ± 0.5 dB |
| Frequency drift | Not more than 0.015% |
| Antenna input impedance | 300 Ω equilibrium 75 Ω unbalance |
| Capture ratio | 1.5 dB or less |
| Image ratio | 90 dB or More (80 MHz) |
| Spurious response | 100 dB or more |
| IF Rejection | 100 dB or more |
| AM suppression | 60 dB or more |
| Stereo separation | 40 dB or More (400 Hz) |
| Rated output (400 Hz, 100% modulation) | 1.5V |
| <AM Tuner Section> | |
| Receiving frequency | 520 kHz to 1610 kHz |
| Sensitivity | 15 μ V (IHF) |
| Image ratio | 80 dB or more |
| IF interference ratio | 70 dB or more |
| Signal-to-noise ratio (30% modulation, 1 mv input) | 45 dB or more |
| Selectivity | 60 dB or more |
| Rated output (400 Hz, 30% modulation) | 0.4V |
| Output impedance | 7k Ω |
| <General> | |
| Attachment mechanism | FM mono to stereo automatic switching device FM stereo indicator FM muting FM center tuning meter SCA Filters FM stereo noise filter Low-impedance output circuit Tape recording terminal Mono output terminal AM bar antenna Signal meter Multi-path output terminal Level adjustment volume |
| Semiconductor used | Transistor : 29 FET : 3 IC : 4 Diode : 28 pcs |
| Power supply voltage | 100 VAC / 117 V, 50Hz/60Hz |
| Power consumption | 20W |
| External dimensions | Width 408x Height 134x Depth 280 mm |
| Weight | 8.2kg |