ONKYO T-443FX
¥ 24,800 (around 1990)
Commentary
FM/AM tuner for multi-channel FM and high-quality broadcasting programs.
The front end uses a twin varactor diode and MOS FET to improve high sensitivity and stable reception performance. The IF circuit uses a ceramic filter with excellent delay characteristics to ensure low distortion and high selectivity.
Uses MPX-PLL and IC.
It has a built-in auto-tuning mechanism that scans automatically by pressing the UP/DOWN keys and stops automatically at the station receiving position.
Up to a total of 20 FM and AM broadcasting stations can be stored in memory at random. If you preset 1 ℃, you can easily call up and tune from 10 keys.
It also has a built-in backup function that does not erase the memory even in case of power failure.
The AM section uses a low-impedance AM loop antenna, and the IF stage is composed of a 3-terminal ceramic filter and coil.
Model Rating
Method | FM/AM Tuner |
FM Tuner Section | |
Receiving frequency | 76.1 mhz to 89.9 mhz |
Practical sensitivity | 1.0 μ V (75 Ω) 11.2dBf(IHF) |
S/N50dB sensitivity | 2.4 μ V (75 Ω) 18.8dBf(IHF) |
Image interference ratio | 60dB(83MHz) |
IF interference ratio | 100dB(83MHz) |
Spurious interference ratio | 85dB |
Two signal selectivity | 60dB |
Strain Rate (400 Hz) | mono:0.1% stereo:0.2% |
Stereo separation | 50dB(1kHz) 38 dB (100 Hz to 10 kHz) |
AM suppression ratio | 60dB |
Capture ratio | 1.0dB |
Signal-to-noise ratio | mono:82dB stereo:76dB |
Frequency characteristic | 20 Hz to 15 kHz, + 0 -1dB |
Carrier leak | -65dB |
Antenna impedance | 75 Ω unbalance |
Output Voltage (400 Hz) | 500mV(100%) |
Output impedance | 4k Ω |
<AM Tuner Section> | |
Practical sensitivity | 200 μ V/m (attached loop antenna) |
Image Interference Ratio (999 Hz) | 35dB |
IF interference ratio (999 Hz) | 50dB |
Selectivity (+ / - 10k) | 35dB |
SN ratio (100mV/m) | 50dB |
Strain Rate (400 Hz) | 0.3% |
Output Voltage (400 Hz) | 0.3% |
Output impedance | 4k Ω |
<General> | |
Pwer | 100 VAC, 50/60Hz |
Power consumption (Electrical Appliance and Material Control Law) | 10W |
External dimensions | Width 435x Height 72x Depth 265 mm |
Weight | 2.6kg |