Tandy Radio Shack Realistic PRO-2004 Service Manual page 4

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•
SPECIFICATIONS
•
•
"
•
DESCRIPTION
NaM INAl SPEC. LIMIT SPEC.
Frequency Range
25
to
"520 MHz
760 to 1300 MHz
Sensitivity
NFM:
AM:
WFM:
Selectivity
NFM/AM
WFM
20 dB
SIN
at 3 kHz"DEV. 1 kHz
25to 520 MHz
760 to
1100
MHz
1100
to
1300
MHz
20 dB SIN at 60% MaD. 1 kHz
25 to
520
MHz
760 to 1100 MHz
1100 to 1300 MHz
30
dB
SIN at
22.5 kHz DEV. 1 kHz
25to
520
MHz
760 to 1100 MHz
1100 to 1300 MHz
-6
dB
-SOdB
•
0.5 p.V
0.5 p.V
3.0 ,."V
2.0,."V
2.0p.V
3.0 p.V
3.0 p.V
3.0 ,."
V
10.0 p.V
±9
kHz
±15
kHz
•
2.0 p.V
2.0 p.V
10.0 p.V
5.0 p.V
5.0 p.V
10.0 p.V
10.0 IlV
10.0 p.V
20.G·IlV
±12 kHz
±18 kHz
-6
dB
-SOdB
Modulation
Acceptance: EIA R8-204·A
Spurious Rejection
at
328
MHz (NFM)
Image Ratio
at
70 MHz (NFM) "
70 MHz
+
(2x61 0
MHz)
= 1290 MHz
±150 kHz
±300
kHz
.:!:8 kHz
40 dB
35dB
±200
kHz
±4OQ kHz
±5'kHz
35
dB .
25 dB
IF Rejection
610 MHz at 70 MHz (NFM)
608 MHz at 1000 MHz (NFM)
Signal to Noise Ratio
NFM/AM
3 kHz DEV.
at
1 kHz
60% MaD. at 1 kHz
100 p. V INPUT
WFM
40dB
40 dB
30dB
"
35dB
2.0 p.V
2.0 p.V
10.0 p.V
15
dB
•
45dB
60dB
SOdB
40
dB
0.5 p.V
0.5,."
V
3.0 p.V
25 dB
•
25 to 520 MHz
760 to 1100 MHz
1100 to 1300 MHz
(S
+ N/N)
Tight
22.5
kHz DEV. at 1 kHz
Squelch Sensitivity
NFM/AM
Threshold
•
WFM
Threshold
•
Tight
Scanning Rate
•
25to 520 MHz
760 to 1100 MHz
1100 to 1300 MHz
(S
+
N/N)
Fast
Slow
3.0 p.V
3.0 p.V
10.0 p.V
40 dB
16 channel/sec.
8
channel/sec.
10.0 IlV
10.0 p.V
20.0 IlV
30dB
•
14
to 18 channel/sec.
7 to 9 channellsec.
-3-