Audio Database

The

Lo-D FT-200
33,000yen(around the 1974 time)

Description
 
The AM/FM stereo tuner which realized high cost performance while aiming at the low noise design.

The radio interference is reduced while decreasing a noise by using FET for the front end of FM tuner part.
Moreover, a ceramics filter is adopted as the IF section and selectivity and a distorted property are improved.

The low pass filter is carried in preparation for the carrier leakage leading to a tone-quality failure.

FM muting circuit is built in and an inter-office noise can be reduced.

The stabilized power source is adopted.


Rating of a mode
Form FM/AM tuner
<FM tuner part>
Practical speed 2.5 microvolts (IHF)
SN ratio 60dB
Capture ratio 2dB
Effective selectivity 30dB
Antenna input impedance 300-ohm balance type
Output voltage 0.3V (400Hz, 30% modulation)
<AM tuner part>
Practical speed 50dB/m(S/N20dB)
Effective selectivity 25dB
SN ratio 45dB
Output voltage 0.3V (400Hz, 30% modulation)
<Synthesis>
An attached functionality Signal meter
FM stereo indicator
FM muting switch
Stereo monophonic automatic switching
AM bar antenna
The semiconductor used Transistor: Ten pieces
FET: One piece
IC: One piece
Diode: 18 pieces
Supply voltage AC100V, 50Hz/60Hz
Power consumption 10W
Dimensions Width 312x height 105x depth of 270mm
Weight 3.3kg