TRIO FX-46/FX-46K
FX-46 : ¥ 23,900 (around 1966?)
FX-46K : ¥ 17,900 (around 1966?)
Commentary
This FM multi-stereo tuner was developed using Trio's outstanding technologies such as the FM mono-stereo automatic switching device.
FX-46K was also sold as a kit model of FX-46.
The use of printed circuit boards ensures stable quality and long life.
A 3-row varicon is used for the front end section, and the intermediate frequency circuit is also a double limiter (two stage noise elimination circuit) for higher sensitivity.
Noise is suppressed by an FM multi-stereo noise filter.
Equipped with an automatic switching circuit between FM mono and stereo, it is automatically switched by electronic circuit.
For the FX-46K, the front end and FM multi / Adapter part are all assembled, wired and adjusted. The intermediate frequency section is a printed wiring board on which components are inserted into one printed circuit board and soldered.
Model Rating
| Type | FM multi-stereo tuner |
| Tuner Section | |
| Receiving frequency | 76 MHz to 90 MHz |
| Sensitivity (30% modulation) | 1.9 μ V/84MHz at S/N 20 dB |
| Practical sensitivity (30% modulation) | 2.5 μ V/84MHz at S/N 30 dB |
| Image ratio | 45 dB or more |
| Frequency characteristic | 20 Hz to 20 kHz ± 1 dB or less |
| SN ratio (100% modulation) | 65 dB or More (100 μ V Input) |
| Distortion factor | 1% or Less (400 Hz, 100% Modulation, 100 μ V Input) |
| Multi-Part | |
| Separation | 36 dB or More (400 Hz) |
| Distortion factor | Not more than 1% |
| Noise filter | Method of cutting only the noise |
| Carrier leak | -50dB or less (100% modulation) |
| <General> | |
| Accessory circuit | FM stereo / mono automatic switching device FM stereo display lamp New type noise filter |
| Used vacuum tubes and diodes | 8 vacuum tubes 6AQ8:2 6BA6:4 6AW8A:1 6AN8:1 8 Diodes FRIK:2 IN60:2 OA90:4 |
| Pwer | 100V/117V, 50Hz/60Hz |
| Power consumption | 20W |
| External dimensions | Width 380x Height 150x Depth 300 mm |
| Weight | 6.6kg |