Tecsun S-8800 - Trouble Shooting

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SELECTIVITY
LW / MW: > 50dB (BW = 6 kHz)
SW: > 50dB (BW = 6 kHz)
FM: > 60dB (150 kHz)
S/N RATIO
LW / MW: better than 40dB
SW: better than 45dB
FM: better than 65dB
IF FREQUENCY
AM: 1st IF frequency: 55.845 MHz
2nd IF frequency: 10.7 MHz
3rd IF frequency (DSP): 45 kHz
FM: 128 kHz
FM STEREO SEPARATION: better than 35dB
STATION MEMORIES:
FM: 100 stations
LW: 100 stations
MW: 100 stations
SW: 250 stations
SSB: 100 stations
OUTPUT POWER (distortion 10%): ≥900mW
QUIESCENT CURRENT
Off mode: <130μA
FM: <46mA
LW / MW:
<86mA
SW: <97mA
SSB: <97mA
S/N SENSITIVTY
LW: (S / N = 26dB) better than 3mV / m
MW: (S / N = 26dB) better than 1mV / m
SW: (S / N = 26dB) better than 20μV
SSB: (S / N = 10dB) better than 1μV
FM: (S / N = 30dB) better than 3μV