Uniden MHS550 manual Receiver Items Unit Nominal Limit

Page 59

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

Image 59

Contents Page FCC/Industry Canada Information Maritime Radio Services OperationTable of Contents USA/CAN/INT U.I.C Selecting and Using Follow these steps to get going Marine Band Quick Start Guide for the MHS550FRS Band AM Band Weather BandAircraft Band FM BandNormal Scanning IntroductionTripleWatch FCC RF Exposure Information Lithium Ion Battery Pack Warning What’s Included Introduction FeaturesPage 17 18 MHS550 ControlsPage Page Radio Charger Cradle VHF Marine Band Family Radio Service FRS BandLCD Displays Indicator Meanings Page Batteries Indicator SoundsUsing the Alkaline Battery Pack Installing the Lithium Ion Battery PackBattery Life and Indication Mounting on a Wall Mounting the Charging CradleAlkaline Batteries and Radio Performance To Mount the Cradle on a Counter TopAttaching the Belt Clip Operation Marine and Weather Bands Basic Operation, Controls Settup OptionsSelecting a Channel Setting the Transmitting Power LevelTo transmit, follow the steps below TransmittingOperation AM Band Operation Family Radio Service BandOperation Aircraft Band Operation FM BandMarine Band FRS Band Using the Radio Menu OptionsUSA/CAN/INT U.I.C. Marine Band Only Accessing the MenusLamp Backlight Adjust For All Bands Adjusting Display Contrast For All Bands Contrast AdjustAdding Fips Codes For Marine/Weather Band Only Setting the Key Beep For All BandsI t 03A CG Only Changing Channel Names For Marine Band OnlyCode Setting Ctcss Codes FRS Band OnlyPage Tuning Steps. Press Enter Setting Frequency Steps AM, FM OnlyOther Options Setting FM Muting FM Band OnlySetting the Key Lock For All Bands Manually Selecting Coast Guard/Distress/Hailing Channels Storing a Channel or Frequency in Memory For All Bands Alert Selecting and Using Weather Channel and Weather Alert WXSec Immediate Scanning The Basics and Beyond TripleWatch Scanning as above, but also monitors Channel Normal Scanning TripleWatch and DualWatch Scanning VHF FRS Both Watches and Weather Channel VHF-FRS Page Accessory Options Using the External Speaker/Mic Jack Examples of Mode ApplicationsTroubleshooting Care and MaintenanceSymptom Cause Remedy Reference Section SpecificationsReceiver Items Unit Nominal Limit Status Full Name Char Name USA Channel FrequenciesMarine Operator Canadian Channel Frequencies Inhiber International Channel Frequencies Port Operation DCS Codes Noaa Channels and FrequenciesCtcss Channels and Frequencies FRS Channels FrequenciesWarrantor Uniden America Corporation Uniden Three Year Limited Warranty