Uniden MHS550 manual Reference Section, Specifications

		Reference Section
Specifications
	General
	Item	Description
	Channels	All USA, Canadian, and International
	Frequency	Marine-Weather:156.05 ~ 163.275MHz, 25kHz Step
	Range/Step	Family Radio Service: 462.5625 ~ 467.7125MHz, 12.5kHz Step
		AM Broadcast: 500.00 ~ 1800kHz, 10 or 9kHz Step
		FM Broadcast: 87.5 ~108.0MHz, 100 or 200MHz Step
		Aircraft: 108.00 ~ 137.00MHz, 25kHz Step
	Antenna	Fixed Mount type
	Connectors	External MIC/SPEAKER, 2.5mm Diam. 3-contact Stereo type
	Controls and	Volume, Squelch with Power On/Off, Up, Down Keys,Ch16/TRI, Menu, Enter, WX Alert, Scan/Mem,
	Switches	Band/1,2.5/5W, Push to Talk, Light/Lock
	Display	LCD 128 x 64 Full Dot Matrix
	Backlight	LCD Front Key -yellow-green color
	Cabinet Size	4.21H x 2.55W x 1.38D inches (107 x 65 x 35mm)
	Weight	9.5 oz (270 g.)
	Speaker	Built-in 32mm diam. Dynamic type (8ȍ, 0.7W)
	Microphone	Built-in Electret type
	Supplied	Li-Ion Battery Pack (7.4VDC, 1400mA/hr min) AC Adapter, Drop-In Charger, CLA DC Cord, Alkaline
	Accessories	Battery Tray (4xAAA), Belt Clip, Hand Strap
	Operating	-30° C to 50° C. (Battery charge: 0° C to 45° C.)
	Temperature
	Storage	-30° C to 60° C
	Temperature
	AC Adapter	Input: 100VAC ~ 240VAC, 50/60Hz Output: 12VDC, 1A
	Regulation	FCC, IC
	Battery Life	10 Hours, Min.
	(Li-Ion)
	Waterproof Grade	Compliant to JIS7/IPX7 Immersion Protection Standards. Submersible in one meter of water for 30
		minutes without damage.

Transmitter
Items		Unit	Nominal
Frequency Tolerance @ 25° C to 50° C		PPM	±0.5
Frequency Stability -20° C to 50° C		PPM
Carrier Power	(MRN, 5W)	W	5
	(MRN 2.5W)	W	2.5
	(MRN 1W)	W	1
	(FRS/MRN 0.5W)	W	0.5
Spurious Emission	(MRN 5W)	dBc	53
	(MRN 2.5W/1W)	dBc	58
Modulation Frequency Response	500Hz	dB	-6
	2000Hz	dB	+6
Microphone Sensitivity	(MRN for ± 3kHz Deviation)	mV	6
	(FRS for ± 1.5kHz Deviation)	mV	6
Maximum Deviation@100mV Input	(MRN)	±kHz	4.5
	(FRS with Subaudio)	±kHz	2.3
Modulation Distortion 750 μS		%	0.6
De-emphas 0.3 to 3kHz BPF
Hum and Noise 750 μS	(MRN)	dB	38
De-emphas 0.3 to 3kHz PF	(FRS)	dB	35
Current Drain @ High Power 5W	(MRN)	mA	1500
	(FRS)	mA	650

58 Uniden MHS550 Radio Owner’s Manual