¥ 48,000 (around 1974)
FM/AM tuner capable of stable reception from weak electric field to strong electric field.
The front-end section uses a 2-chip high-frequency amplifier stage and a 1-chip dual-gate MOS FET for the mixer stage to improve interference rejection capability.
In the IF stage, monolithic ICs with high limiter limiter effect is used abundantly, and various characteristics important for the tuner are greatly improved.
In the MPX section, an IC of double balanced differential demodulation system and a mold type transformer are adopted, and excellent separation and excellent distortion factor are obtained over a wide band.
In preparation for the FM multi-station era, a stereo only circuit is also provided.
Uses a Chebyshev type carrier leak filter to cut out carrier leaks that affect sound quality.
Uses F-type connector for 75 Ω coaxial cable.
There was a wood case sold separately.
|FM Tuner Section|
|Antenna||300 Ω balanced, 75 Ω unbalanced|
|Practical sensitivity||1.6 μ V (IHF)|
|Image interference ratio||85dB|
|IF interference ratio||100dB|
|1/2 IF interference ratio||95dB|
|AM suppression ratio||55dB|
|Harmonic distortion factor (100% modulation)||mono:0.2%
|MPX Noise Filter||ON/OFF enabled|
|<AM Tuner Section>|
|Antenna||Ferrite bar antenna|
|Practical sensitivity (S/N 30 dB, bar antenna)||55dB|
|Selectivity||35 dB (± 10 kHz)|
|Image interference ratio||40dB|
VARIABLE : 0 ~ 700 mV
|External dimensions||Width 400x Height 138x Depth 311 mm|
|Separately Sold : Wood Case CA-650 (¥ 7,500) for 650 Series|
|External dimensions||Width 465x Height 170x Depth 307 mm|