Technics ST-7200
¥ 29,800 (around 1975)
Commentary
An FM/AM tuner developed with sound quality as the first point at a low price.
The IF stage is designed with an emphasis on county delay characteristics.
The MPX circuit is a highly stable circuit using a PLL.
It uses a center tuning method that makes it easy to tune the channel when it comes to the center of the indicator meter.
It is equipped with a soft muting switch to eliminate noise between stations.
There was a wood case sold separately.
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Model Rating
| Type | FM/AM Tuner |
| FM Tuner Section | |
| Receiving frequency | 76 MHz to 90 MHz |
| Sensitivity | 0.9 μ V (75 Ω) |
| Harmonic distortion factor | mono:0.2% stereo:0.4% |
| SN ratio (400 Hz, 100% modulation) | 75dB |
| Frequency characteristic | 20 Hz to 15 kHz + 0.2 -1.0 dB |
| Selectivity | 70dB |
| Capture ratio | 1.0dB |
| Image Interference Ratio (83 mhz) | 55dB |
| IF Interference Ratio (83 MHz) | 80dB |
| Spurious interference ratio (83 MHz) | 85dB |
| AM suppression ratio | 55dB |
| Stereo separation | 45dB(1kHz) 35dB(10kHz) |
| Leak Carrier (19 khz / 38 khz) | -65dB |
| Antenna terminal | Unbalanced : 75 Ω |
| <AM Tuner Section> | |
| Receiving frequency | 525 kHz to 1605 kHz |
| Sensitivity (S/N ratio 20 dB) | 30 μ V |
| Selectivity | 25dB |
| Image interference ratio (1000 kHz) | 45dB |
| IF Disturbance Ratio (1000 kHz) | 40dB |
| <General> | |
| Semiconductor used | IC : 2 FET : 1 Transistor : 10 Diode : 11 units |
| Output voltage | 0.7V(Fixed) |
| Pwer | 100 VAC, 50Hz/60Hz |
| Power consumption | 9W |
| External dimensions | Width 410x Height 140x Depth 352 mm |
| Weight | 4.8kg |
| Sold Separately | Wood Case SH-770 (¥ 3,000) |