¥ 69,800 (around 1975)
The IF stage employs three 6-pole phase linear filters with flat group delay characteristics over the 400 kHz band, and is driven by an 8-stage differential amplifier.
These filters are expected to outperform linear-phase ceramic filters, achieve a low distortion rate close to that of an audio amplifier, and have improved stereo separation and other features that are important for improving tuner sound quality.
In addition, a newly developed low-noise transistor and a ripple-free low-voltage circuit are employed to achieve low noise.
A low-noise dual-gate MOS FET is used for the RF stage and mixer stage, and the applied voltage is 14 V, so it is designed to be resistant to strong electric fields.
The wide linear range of the FET and the high selectivity of the RF amplifier stage greatly improve the interference rejection capability such as spurious response and intermodulation interference (three signal) characteristics.
A PLL demodulation IC is used for the multi-circuit.
Uses 3-pole Chebyshev type carrier leak filter.
|FM Tuner Section|
|Antenna||300 Ω balanced, 75 Ω unbalanced|
|Practical sensitivity||1.6 μ V (IHF)|
|Image interference ratio||90dB|
|IF interference ratio||100dB|
|Spurious interference ratio||100dB|
|AM suppression ratio||55dB|
|Harmonic distortion factor (100% modulation)||mono:0.08%
|MPX Noise Filter||2-stage switching|
|<AM Tuner Section>|
|Antenna||Ferrite bar antenna|
|Practical sensitivity (IHF, bar antenna)||50dB/m|
|Selectivity||30 dB (± 10 kHz)|
|Image interference ratio||70dB|
VARIABLE : 0 ~ 700 mV
|External dimensions||Width 425x Height 148x Depth 386 mm|