Pioneer TX-50A
¥ 25,500 (around 1972)
Commentary
This is an AM/FM stereo tuner with a reasonable price that is designed for enthusiasts.
The front-end section employs a FET and a 3-row varicon to improve not only the sensitivity but also the interference rejection characteristics such as image interference ratio and spurious interference ratio.
An FM muting circuit is installed to suppress inter-station noise during FM channel selection.
The FM muting circuit can be turned on and off.
A large dial scale is adopted, and the FM scale is a linear type with equal spacing.
You can adjust the output level.
It also has a tape recording terminal that can be directly connected to the tape deck.
Model Rating
Type | AM/FM stereo tuner |
FM Tuner Section | |
Practical sensitivity | 2.3 μ V (IHF) |
Capture ratio | 3.5dB(IHF) |
Image interference ratio | 55 dB or More (82 MHz) |
IF interference ratio | 80 dB or More (78 MHz) |
Spurious response | 70 dB or More (82 MHz) |
AM suppression ratio | 45 dB or more |
S/N | 70 dB or more |
Harmonic distortion factor (100% modulation) | Mono : not more than 0.6% Stereo : 0.8% or less |
Tuning indicator | Signal meter |
Muting | ON-OFF enabled |
Stereo separation | 40 dB or More (1 kHz) |
Residual carrier level | 35 dB or more |
Antenna | 300 Ω Balanced Type 75 Ω Unbalanced Type |
Accessory circuit | Automatic switching between FM mono and stereo |
<AM Tuner Section> | |
Practical sensitivity | 15 μ V (IHF) |
Image interference ratio | 45dB(1MHz) |
IF interference ratio | 35 dB or more |
S/N | 50 dB or more (30% modulation) |
Antenna | Ferrite bar antenna |
Tuning indicator | Signal meter |
<General> | |
Output voltage (100% modulation) | Maximum 1.8 v ~ Minimum 60 mv |
Recorded output | FM : 600 mV (1 kHz, 100% modulation) AM : 600 mV (400 Hz, 100% modulation) |
Accessory circuit | Output level control (FM, AM) |
Power consumption | Rating : 12W |
External dimensions | Width 330x Height 118x Depth 338 mm |
Weight | 4.6kg |