Audio Database

WL515
Commentary

FM/AM tuner incorporating FET and IC.

The front end is composed of a cascode amplifier circuit with FET to ensure high sensitivity and good SN.
An FET is also used for the frequency conversion stage, and the intermediate frequency amplification has five stages.

Equipped with a muting circuit.

Model Rating
Type FM/AM Tuner
Circuit system FM tuner section : FET cascode amplification, FET frequency conversion IF5-stage
Muting circuit
AM Tuner Section : High-frequency one stage amplification, Intermediate-frequency one stage amplification
Receiving frequency FM : 76 MHz to 90 MHz
AM : 525 kHz to 1605 kHz
Sensitivity FM : 2 μ V (IHF practical sensitivity)
AM : 51dB/m (with built-in antenna)
Image ratio FM : 50 dB or more
AM : 60 dB or more
Signal-to-noise ratio FM : 60 dB or more
AM : 38 dB or more
Frequency characteristic FM : 30 Hz to 15 kHz
AM : 50 Hz to 4000 Hz -3dB
Channel separation 38 dB or More (1 kHz)
26dB(10kHz)
Distortion factor FM : 1% or less
Leak carrier -40dB or less
Antenna input impedance FM : 300 Ω balanced, 75 Ω unbalanced
Output voltage 1V
Noise filter High-cut system
Semiconductor used Silicon transistor : 21 units
FET : 3
IC : 3
Diode : 21
SCR : 1
Power supply voltage 100 VAC ~ 117 VAC
Power consumption 15VA
External dimensions Width 450x Height 147.5x Depth 268 mm
Weight 7.6kg