Sony ST-80F

Repair

Japan 1969

FM tuner
Balanced 300 Ohms antenna
Frequency 87 - 108 MHz
Sensitivity 2.4 µV S/N 30 dB 400 Hz
Signal to noise ratio 65 dB
2 dB capture ratio
Selectivity 50 dB IHF
Image rejection 50 dB
IF rejection 90 dB
Spurious rejection 80 dB
AM suppression 50 dB
Frequency response 30 Hz – 15 kHz
Mono harmonic distortion 0.5%
Stereo harmonic distortion 0.8%
Stereo separation 36 dB at 1 kHz
10 µV stereo activation
Stereo subcarrier suppression 50 dB

AM tuner
Iron and external antenna
Frequency 530 – 1605 kHz
Sensitivity 48 dBm internal antenna 10 µV external antenna
IF rejection 36 dB 1000 kHz
Harmonic distortion 0.8% at 5 mV output

Audio output
High level 2 V
Low level 700 mV