PHILIPS AH180
¥ 100,000 (around 1980?)
Commentary
A synthesizer tuner of the slimline component series.
For the tuning circuit, a C-MOS LSI with low power consumption and a CPU LSI with 6000 built-in elements are used carefully. Together with the adoption of a crystal oscillator, accurate tuning accuracy without tuning distortion is realized.
The front-end section consists of six electronic tuners using dual MOS-FETs.
It is equipped with a direct preset function, and you can memorize the 10 stations you want to preset by simply key-in.
Equipped with a standby function, memory is always kept.
Memory is maintained for 48 hours even when power is turned off.
Equipped with muting circuit by reed switch.
The FM IF circuit consists of 11-stage differential amplifiers.
A 14-pole filter and computer analysis provide high gain and optimal limiter performance, which makes it possible to achieve both high selectivity and low distortion rate reproduction.
You can check the strength of the radio wave by the LED display.
By using an excellent group delay characteristic element, both low distortion factor and high selectivity are achieved.
As a separately sold option, there was a wood case with mahogany finish.
Model Rating
| Method | FM/AM Tuner |
| FM Tuner Section | |
| Configuration | Front end part : 6 series, RF amplification by MOS-FET varactor diode IF Stage : 14 Pole Linear Phase |
| Practical sensitivity | 0.9 μ V (75 Ω) |
| Capture ratio | 1.5dB |
| Effective selectivity | 70dB |
| Signal-to-noise ratio | 70dB |
| Spurious interference ratio | 100dB |
| Harmonic distortion factor (400 Hz, 100% modulation) | mono:0.10% stereo:0.15% |
| Frequency characteristic | 20 Hz to 15 kHz -1dB |
| Stereo separation | 55dB(1kHz) |
| <AM Tuner Section> | |
| Practical sensitivity | 150 μ V |
| Selectivity | 40 dB (± 9 kHz) |
| IF interference ratio | 60dB |
| <General> | |
| External dimensions | Width 482x Height 68x Depth 340 mm |
| Weight | - |
| Sold Separately | Wood Case AH180 (¥ 16,000) |