ROTEL RT-622
¥ 49,000 (around 1973)
Commentary
FM/AM tuners incorporating the latest circuit technologies such as ICs.
The FM front-end uses a low-noise FET and used for the FM front end.
IC circuit technology is used for the IF stage and MPX stage.
Uses a ceramic filter.
Equipped with muting and MPX filter.
2 Equipped with a tuning indicating meter.
Equipped with two output terminals.
Model Rating
| Type | FM/AM Tuner |
| FM Tuner Section | |
| Antenna impedance | 300 Ω equilibrium 75 Ω unbalance |
| Sensitivity (IHF) | 1.7 μ V |
| Harmonic distortion factor | Not more than 0.5% |
| Signal-to-noise ratio | 70 dB or more |
| Image interference ratio | 100dB |
| Spurious response | 100dB |
| Intermediate frequency interference ratio | 100dB |
| Capture ratio | 1.0dB |
| Selectivity | 80dB |
| Separation | 40dB(1kHz) |
| SCA suppression ratio | 60dB |
| AM suppression ratio | 50dB |
| <AM Tuner Section> | |
| Sensitivity | 20 μ V (S/N = 20 dB) |
| Image interference ratio | 50dB(1MHz) |
| Intermediate frequency interference ratio | 70dB(1MHz) |
| Signal-to-noise ratio | 50dB |
| Selectivity | 30dB |
| <General> | |
| Semiconductor used | Transistor : 25 FET : 1 IC : 3 Diode : 14 pcs Ceramic Filter : 5 Pieces |
| Power consumption | 20VA |
| External dimensions | Width 420x Height 140x Depth 240 mm |
| Weight | 5kg |