Radio Shack PRO-2050 Service Manual page 4

Item Unit
Nominal Limit
Sensitivity (S+N)/N=20 dB
VHF low band
40.840 MHz
f.lV
0.5 2.0
VHF high band 162.400 MHz
f.lV
0.5 3.0
UHF band
453.250 MHz
f.lV
0.4 3.0
Aircraft band 127.175 MHz
f.lV
1.5
8.0
Public service band
857.200 MHz
f.lV
0.7 4.0
Maximum sensitivity 127.175 MHz
f.lV
0.2 2.0
Threshold squelch (MANUAL)
VHF low band at 40.840 MHz
f.lV
0.4 0.8
VHF high band at 162.400 MHz
f.lV
0.5 1.2
UHF band
at 453.250 MHz
f.lV
0.4 1.8
Aircraft band
at 127.175 MHz
f.lV
0.6 2.0
Public service band at 857.200 MHz
f.lV
0.3 3.0
Tight squelch (MANUAL) (S+N)/N
VHF low band at 40.840 MHz dB 25
15
VHF high band
at 162.400 MHz
dB 25
15
UHF band at 453.250 MHz dB 25
15
Aircraft band at 127.175 MHz dB 15 1"0
Public service band at 857.200 MHz dB 25
15
Hum and noise
VHF low band at 40.840 MHz dB 39
30
VHF high band at 162.400 MHz dB 39
30
UHF band
at 453.250 MHz
dB 39
30
Aircraft band
at 127.175 MHz
dB 50
30
Public service band
at 857.200 MHz
dB 39
30
Data deviation sensitivity
Control ch data
at 851.0125 MHz kHz
±0.3
±1.5
Voice ch data at 851.0125 MHz kHz ±0.1
±10
Audio frequency response -6 dB
(at 162.400 MHz)
Low
Hz 300 200 - 450
High Hz
2300
1300 - 3000
(at 127.175 MHz)
Low
Hz 280
200 - 450
High Hz
2200
1300 - 3000
Audio output power of internal speaker
(at 162.400 MHz) Maximum
mW 1100
700
1Q%THD
mW 1000
600
(at 127.175 MHz) Maximum
mW
1100
700
10% THD
mW 1000
600
(at 162.4 MHz 32
Q
EAR.) Maximum V 0.8
0.5
- 4 -