SANSUI TU - α 507i
¥ 45,000 (around 1987)
Commentary
FM/AM tuner equipped with SLRC (Super Liner Receiving Circuit).
A newly developed super linear receiving circuit : SLRC is mounted on the front end part.
As a result, both high sensitivity reception capability at weak input and interference rejection capability at strong input are simultaneously obtained, and reception performance for receiving FM stations in excellent condition is realized.
The antenna input section uses an AGC circuit with a PIN diode and a dual gate MOS FET to minimize distortion in high-field regions.
In addition, a 75 Ω dedicated antenna input is mounted to eliminate matching loss and enable reception with high sensitivity and low distortion rate.
The IF section has a WIDE/NARROW band switching function.
In WIDE mode, a low-distortion wide-band ceramic filter with excellent phase characteristics is used, and in NARROW mode, an additional narrow-band high-performance filter is added to enhance adjacent interference rejection.
As a result, high-quality reception is possible in WIDE mode, and clear reception is possible in NARROW mode by cutting out adjacent station interference in strong electric field region.
FM/AM can be memorized for 10 stations each by 10 keys.
If you connect a timer, you can program 2 broadcasting stations with different time zone and record absence.
A newly developed board with excellent vibration damping and insulation characteristics is used.
Uses an FM antenna terminal dedicated to 75 Ω to eliminate matching loss.
TV Bus Mute, Noise Canceler, Preset Scan, Preset Memory, etc.
Model Rating
Type | FM/AM Tuner |
<FM Part> | |
Practical sensitivity | 10.8dBf |
SN50dB Sensitivity | mono:16dBf stereo:36.0dBf |
Effective selectivity | Wide:55dB Narrow:75dB |
Signal-to-noise ratio | mono:86dB stereo:80dB |
Distortion factor | mono:0.05% stereo:0.06% |
Separation | 50dB |
Image interference ratio | 80dB |
Spurious interference ratio | 100dB |
IF interference ratio | 100dB |
Antenna impedance | 75 Ω |
Preset memory | 10 stations |
<AM Department> | |
Practical sensitivity | 48dB/m |
Effective selectivity | 35dB |
Signal-to-noise ratio | 50dB |
Distortion factor | 0.5% |
Preset memory | 10 stations |
<General> | |
Rated power consumption | 9W |
External dimensions | Width 448x Height 80x Depth 292 mm |
Weight | 3.5kg |