Realistic trc-449 Service Manual page 4

RECEIVER :
(ANL fit i Noise Blanker Switch OFF)
UNIT
NOMINAL
LIMIT
Max. Sensitivity : AM
µV 0.5
1
SSB ,uV 0.25
0.5
Sensitivity for 10 dB S/N
: AM µV 0.5
1
SSB pV
0.25
0.5
:AM dB 90
80
SSB dB 90 80
: AM dB
±3 ±5
SSB dB
±3 ±5
: AM Hz 2100
1750 — 2500
SSB Hz 3500
2500 — 5000
: AM Hz 450 300 — 650
SSB Hz
450 300 — 650
: AM dB 60
50
:AM dB 65
54
SSB dB 65
54
:AM W
4 3
SSB W
4 3
:AM
W 3 2.5
SSB W 3
2.5
AGC Figure of Merit 50 mV for
10 dB Change in Audio Output
Overload AGC Characteristics from
10 mV to 100 mV
Overall Audio Fidelity at 6 dB Down
Upper Frequency
Lower Frequency
Cross Modulation, RS Standard
Adjacent Channel Selectivity (10 kHz)
Maximum Audio Output Power
Audio Output Power at 10% THD
THD at 500 mW Audio Output
AM: 1 mV Input, 30% modulation
: AM % 3 6
80% modulation : AM
% 5
12
SSB: 1 mV Input 1 kHz Single tone
: SSB % 3
6
RF Gain Control Range at Max.
Sensitivity Level
: AM dB
40 30 — 50
SSB
dB 40
30 — 50
S/N Ratio at Input 1 mV
: AM dB 50
40
SSB dB
50
40
Squelch Sensitivity at Threshold
: AM
µV 0.5
1
SSB
/IV 0.25 0.5
S Meter Sensitivity at "S-9" (No Modulation AM) : AM
AV 100 25 — 400
SSB pV
100 25 — 400
Image Rejection Ratio. fo+(2x7.8 MHz)
: AM dB 80
70
SSB dB
80
70
1/2 IF Rejection Ratio. fo+7.8 MHz/2 : AM
dB 90
80
SSB dB 90
80
IF Rejection Ratio. 7.8 MHz
: AM dB 85 75
SSB dB 85
75
Oscillator Dropout Voltage
: AM V
9 11
SSB
V 9
11
Clarifier Range : AM
kHz ±1.25
±0.6 — ±2.5
SSB kHz
±1.25 ±0.6 — ±2.5
Spurious Rejection Ratio In band
: AM dB
65
56
SSB dB 65 56
Out of Band : AM dB 60
50
SSB dB 60
50