Uniden MHS550 Radio Owner’s Manual
40
Receiver Specifications
Unit Nominal
Limit
Sensitivity for 12dB
SINAD
MRN
μV
0.3
0.4 max.
FRS
μV
0.35
0.5 max.
FM Broadcast
μV
1.0
3.0 max.
Air
μV
1.0
30 max.
AM Broadcast
μV
1.0
2.0 max.
Squelch Sensitivity
Threshold
μV
0.1
0.25 max.
Tight
μV
0.7
2.0 max.
CTCSS/DSC Opening
SINAD
FRS
dB
8
12 max.
Audio Freq. Response
1kHz Ref.
MRN @ 500 Hz
dB
6
3 to 7
MRN @ 2000 Hz
dB
-6
-9 to -5
FRS @ 500 Hz
dB
6
3 to 7
FRS @ 2000 Hz
dB
-6
-9 to -5
Adjacent Channel
Selectivity
MRN ±25 kHz
dB
72
60 min.
FRS ±12.5 kHz
dB
40
30 min.
IM Rejection
MRN
dB
63
55 min.
Image and Supurious
Rejection
MRN
75
50 min.
Conducted Spurious Emission at the
Antenna Terminal
dBm
-65
-57 max.
Hum and Noise Ratio
MRN
dB
50
35 min.
FRS
dB
37
32 min.
AM Broadcast
dB
42
32 min.
FM Broadcast
dB
53
32 min.
Air
dB
42
32 min.
THD @ Standard Output Power (MRN)
%
1.2
10 max.
Audio Output Power @10% THD (MRN)
W
0.45
0.3 min
Oscillator Dropout Voltage (MRN)
V
2.9
3.8 max.
Current Drain @ No Signal (MRN)
mA
72
85 max.
Current Drain @ Maximum Output (MRN)
mA
220
250 max.
