PHILIPS RH621
¥ 108,000 (around 1972)
Commentary
FM/AM tuner with preset tuning function.
Five preset tunings with varicap diodes are available for FM reception.
Reliability is improved by using an IC for the IF stage.
The FM muting mechanism enables tuning without inter-station noise.
Uses a large flywheel.
Model Rating
| Method | FM/AM Tuner |
| FM sensitivity (S/N26dB, 40 kHz deviation) |
0.7 μ V (75 Ω) 1.4 μ V (300 Ω) |
| AM sensitivity | 80 μ V (S/N 26 dB) |
| Selectivity | FM : 46 dB (at 300 kHz detuning) AM : 40/33dB (at 9 kHz detuning) |
| Intermediate frequency | FM:10.7MHz AM:452kHz |
| Band width (Intermediate Frequency Band) |
FM:185kHz AM : 4.5/7kHz Variable (B1.4) |
| Ratio detection stage band | 420kHz |
| Distortion factor | Not more than 1% (75 kHz deviation, DIN45500) |
| Pilot frequency suppression | -35dB (19, 38 kHz) |
| Crosstalk | -35dB(1kHz) |
| Frequency characteristic | 20 Hz to 15 kHz + 1-3 dB |
| Output | FM : 0.6 V (40 kHz deviation) AM : 350 mV (at 30% modulation) |
| Output impedance | 10k Ω |
| Semiconductor used | IC : 2 (TAA450) Transistor : 22 Diode : 29 units |
| Power consumption | 9W |
| External dimensions | Width 470x Height 117x Depth 280 mm |
| Weight | - |