Uniden MHS550 manual Receiver Items Unit Nominal Limit

Specifications (cont.)

Receiver
Items		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/DCS Opening SINAD	(FRS)	dB	8	12 max.
Audio Freq. Response 1kHz Ref.		dB	6	3 to 7
(MRN) @ 500Hz
(MRN) @ 2000Hz		dB	-6	-9 to -5
(FRS) @ 500Hz		dB	6	3 to 7
(FRS) @ 2000Hz		dB	-6	-9 to -5
Adjacent Channel Selectivity	(MRN ±25kHz)	dB	72	60 min.
	(FRS ±12.5kHz)	dB	40	30 min.
IM Rejection(MRN)		dB	63	55 min.
Image and Spurious Rejection	(MRN)	dB	75	50 min.
Conducted Spurious Emission		dBm	-65	-57 max.
at the antenna terminal
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.

Uniden MHS550 Radio Owner’s Manual 59