Technics QUARTZ ST-G90 Service Manual

ORDER NO. AD8804021C9
CQUARTZ Synthesizer
AM/FM Stereo Tuner
Area
Tuner
ST-G90
(K)...Black Type
(EX)....... Continental
Europe.
(EH) ........ Holland.
(EG) ........ F.R Germany.
eeeecenee
weiabues Asia, Latin
America, Middle
Near East, Africa
and Oceania.
eee Far East PX.
ere European Military.
SPECIFICATIONS
(DIN 45 500)
@ FM TUNER SECTION
AM suppression
55dB
Frequency range
87.50~ 108.00 MHz
Stereo separation
87.525~ 108.00 MHz (+ 25kHz shift)
1kHz
60dB
Sensitivity
1.5yV (IHF, usable)
10kHz
45dB
SIN 30dB
1.3pV (75)
Carrier leak
SIN 26dB
1.2pV (750)
19kHz
—75dB (—80dB, IHF)
S/N 20dB
0.9pV (759)
38kHz
—75dB (—80dB, IHF)
IHF 46dB stereo quieting sensitivity
28yV/75Q
Channel balance (250 Hz~6,300 Hz)
+1.0dB
Total harmonic distortion
Limiting point
0.85pV
MONO (normal)
0.015% °.
Bandwidth
STEREO (normal)
0.02%
IF amplifier
180kHz
SIN
FM demodulator
1000 kHz
MONO
80dB (86 dB, IHF)
Antenna terminals
75Q (unbalanced)
STEREO
74dB (79dB, IHF)
fi AM TUNER SECTION
Frequency response
Alternate channel selectivity
normal + 400kHz
super narrow +200kHz
Capture ratio
Image rejection at 98 MHz
IF rejection at 98 MHz
Spurious response rejection at 98 MHz
Technics
4Hz~15kHz, +0.5dB~ —0.5dB
55dB
30dB
1.0dB
130dB
130dB
130dB
Frequency range
(For Others)
Sensitivity (S/N 20dB)
Matsushita Electric Industrial Co., Ltd.
Central P.O. Box 288, Osaka 530-91, Japan
(For Europe and Australla)
Selectivity at 999kHz (+ 9kHz)
522kHz~ 1611 kHz (9kHz-steps)
530kHz~1620kHz (10kHz-steps)
531 kHz~1602kHz (9kHz-steps)
530kHz~1600kHz (10kHz-steps)
20nV, 300pV/m
50dB
Panasonic Tokyo Office
Matsushita Electric Trading Co., Ltd.
6th Floor, World Trade Center Bldg.,