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Using Your Radio

Setting the squelch level too high may prevent you from 

hearing weaker transmissions. If you are having difficulty 

hearing a transmission, try setting the squelch level lower.

NOTE

Setting the UIC channel mode (USA/CAN/INT)

First ensure that you are in the VHF band. Press and hold BAND/MENU 

to enter the Menu settings. Press ENT/L/M/H till you get the option INT 

(default, it will flash on the LCD). Press the CHANNEL UP or CHANNEL 

DOWN to scroll through the marine channels for the USA, Canada, or 

International waters. Press ENT/L/M/H to save the setting.

Selecting a Channel

Press CHANNEL UP or CHANNEL DOWN briefly to scroll through 

the channels one channel at a time. Press and hold CHANNEL UP or 

CHANNEL DOWN to quickly scroll through the channels.

Making a Transmission

Press and hold Push to Talk.TX displays while you are transmitting. 

Release Push to Talk when you’re finished talking to let the other party 

respond.
•  To prevent stuck microphone problems or situations where Push to 

Talk is pushed accidentally, the radio limits your talk time to 5 minutes 

(VHF Marine) and 3 minutes (UHF CB) in a single transmission.

• 

For the best sound quality, hold the microphone about two inches 

away from your mouth.

•  Some channels are Receive Only. See the channel list starting on 

page 33 for a list of receive-only channels.

There is a time limit for continuous transmission. After 

the time limit, the unit goes into a PTT error condition; 

the timeout tone sounds, TX displays, and the channel 

indicators blink.

NOTE

16

UHF CB+VHF Marine Radio

UNIDEN MHS157

Summary of Contents for MHS157

Page 1: ...MHS157 Dual Band UHF CB VHF Marine Radio For more exciting new products please visit our website Australia www uniden com au...

Page 2: ...e and longitude from your GPS 7 State the nature of your distress e g are you sinking medical emergency man overboard on fire adrift etc 8 State the type of assistance you need medical towing pumps et...

Page 3: ...re well maintained and correctly fitted and the battery cover securely fastened After your radio is submerged in water you might notice that the sound is distorted This is because there is still water...

Page 4: ...Belt Clip 14 Installing optional External Speaker Mic 14 Using Your Radio 15 Turning It On 15 Setting It Up 15 Changing the Volume 15 Setting the Squelch Level 15 Selecting the UIC Channel Mode 16 Sel...

Page 5: ...h 25 Normal mode with Triple Watch 25 Scan Mode Operation 26 Using the radio in Scan Mode 26 Scan mode with Triple Watch or Dual Watch 27 Busy Channel Lockout 27 Vibrator 28 Maintenance and Troublesho...

Page 6: ...at CH01 08 CH41 48 Vibrator Common Submersible design Complies with floating JIS7 IPX7 water resistant standards Memory Scan mode Lets you save channels to memory and monitor them in quick succession...

Page 7: ...mmediately Never use damaged products Need help Get answers at our website www uniden com au for Australian model 7 UHF CB VHF Marine Radio UNIDEN MHS157 Charging Cradle AC Adaptor Lithium Ion Battery...

Page 8: ...cators MHS157 Radio 8 UHF CB VHF Marine Radio UNIDEN MHS157 Antenna LCD VOL LOCK INST WX POWER 16 67 TRI ENT L M H SCAN MEM Speaker Microphone CHANNEL UP CHANNEL DOWN Push To Talk BOOST BAND MENU Exte...

Page 9: ...channel into memory or delete a channel from memory BAND MENU Select UHF CB band or VHF Marine band Enter the Menu function PTT Push to Talk NA Talk transmit on a channel BOOST NA Transmit with a high...

Page 10: ...the channels squelch volume steps ENT L M H Select item in setting condition Select transmit power L M or H Reading the Display Charger The LCD display shows different information depending on what yo...

Page 11: ...NTernational channels TRI or DUAL TRIple Watch or DUAL Watch is turned on MEM The current channel is saved in memory SCAN The radio is in Scan mode WX The weather channels are displayed The battery is...

Page 12: ...e and that there is no foreign matter under the seal 6 Replace the battery compartment cover Tighten the screw securely If the rubber seal appears warn nicked or dried out you must replace it If the s...

Page 13: ...r in firmly Tug on the battery wires gently to make sure you have a good connection 4 Seat the battery case in the battery compartment 5 Before replacing the battery cover check the rubber seal locate...

Page 14: ...er if your radio gets dirty or wet Charge the battery fully before using the radio When the battery is completely charged the CHARGE LED turns green Don t use the charger when the ambient temperature...

Page 15: ...lch level The MHS157 recognizes signals as transmissions if they exceed a signal strength threshold Adjusting the squelch sets this threshold level Increasing squelch requires a signal to be stronger...

Page 16: ...time Press and hold CHANNEL UP or CHANNEL DOWN to quickly scroll through the channels Making a Transmission Press and hold Push to Talk TX displays while you are transmitting Release Push to Talk when...

Page 17: ...W back to 5W 3 The display shows the new transmission power The transmit power remains at the new setting until you change it again Some channels limit the transmission power to 1W When you tune to a...

Page 18: ...t and power on off will operate Key Lock remains in memory when the radio is turned off Using the Battery Save feature The Battery Save feature automatically turns off receive power at regular interva...

Page 19: ...annel Monitor a channel or talk to another radio Press BAND MENU Scan VHF Marine and UHF CB Monitors all the channels you save into memory An error tone sounds if there are no channels saved to memory...

Page 20: ...next transmit power each time you press and hold this button In Normal mode you listen to a single channel until you change it 16 67 16 67 16 67 Every 2 seconds the radio checks channels 16 67 Triple...

Page 21: ...or the signal stops Resume scan You must have at least two channels in memory to start a scan However you cannot save marine channel 70 or Weather channels To activate Scan mode press SCAN MEM You ca...

Page 22: ...annel Triple Watch on Memory Channel Scan 08 25 24 17 15 14 13 12 11 10 20 How it Works VHF Marine Weather Mode In Weather mode the radio monitors one of the five weather channels Using the radio in W...

Page 23: ...NT L M H till DCS CTCSS setting flashes 3 Press CHANNEL UP or CHANNEL DOWN to change the selection 4 Press ENT L M H to save CTCSS Select oF to turn DCS CTCSS off for the selected channel NOTE DCS is...

Page 24: ...ructions Eg CH01 is being used in your area for repeater use 1 Select the correct channel 2 Press and hold BAND MENU to enter the Menu setting Press ENT L M H till dP setting flashes 3 Press CHANNEL U...

Page 25: ...l every two seconds Normal Mode with Dual Watch How it Works UHF CB To activate Dual Watch press and hold BAND MENU to enter the Menu setting Then press ENT L M H till DUAL or TRI flashes on the LCD P...

Page 26: ...channels in 0 5 seconds When it detects a signal the radio stays on the channel until you press the ChannelUp button or the signal stops Resume scan You must have at least two channels in memory to st...

Page 27: ...ed on the radio checks Instant channel every two seconds This feature prevents accidental transmission on a busy channel For example BCL is used when CTCSS or DCS is selected to prevent transmission w...

Page 28: ...till Vi setting flashes on the LCD Press CHANNEL UP or CHANNEL DOWN to turn the setting on or off When it is turned on icon will appear on the LCD Press ENT L M H to save 3 Press and hold BAND MENU t...

Page 29: ...tacts on the radio and charger are clean Replace the battery The radio won t transmit Make sure you are not in Weather or Scan mode Make sure you are not trying to transmit on a receive only channel o...

Page 30: ...play flashes and I don t know why The channel number on the display will flash if the radio is in a Watch mode or in Scan mode Try turning off scanning Triple Watch or Dual Watch see page 9 Where can...

Page 31: ...2V DC10 8V 15 0V Charge time to full capacity 7 5 hours typical Size without antenna 136 6 H x 62 4 W x 45 2 D mm 5 26 H x 2 46 W x 1 7 D inch Weight 266 4g 9 4oz w battery Transmitter Frequency Range...

Page 32: ...0 25 V for 12dB SINAD nominal Audio Frequency Response 6 0 dB 500 Hz 7 0 dB 2kHz Adjacent Channel Selectivity UHF 65dB VHF 75dB Inter Modulation 69dB nominal Audio Output Power 900mW MAX Volume nomina...

Page 33: ...m 15 156 750 Inhibit Receive only Environmental 16 156 800 156 800 Simplex Distress safety and calling 17 156 850 156 850 Simplex 1W Govt maritime control 18A 156 900 156 900 Simplex Commercial 19A 15...

Page 34: ...Coast Guard 82A 157 125 157 125 Simplex Coast Guard 83A 157 175 157 175 Simplex Government 84 161 825 157 225 Duplex Marine Operator 85 161 875 157 275 Duplex Marine Operator 86 161 925 157 325 Duplex...

Page 35: ...Traffic System 15 156 750 156 750 Simplex 1W Environmental 16 156 800 156 800 Simplex Distress safety calling 17 156 850 156 850 Simplex 1W State Control 18A 156 900 156 900 Simplex Commercial 19A 156...

Page 36: ...Port Operation 78A 156 925 156 925 Simplex Inter Ship 79A 156 975 156 975 Simplex Inter Ship 80A 157 025 157 025 Simplex Inter Ship 81A 157 075 157 075 Simplex Canadian Coast Guard 82A 157 125 157 12...

Page 37: ...raffic system 15 156 750 156 750 Simplex 1W Environmental 16 156 800 156 800 Simplex Distress safety calling 17 156 850 156 850 Simplex 1W Govt maritime control 18 161 500 156 900 Duplex Port operatio...

Page 38: ...6 875 156 875 Simplex Port operation ship ship 78 161 525 156 925 Duplex Port operation 79 161 575 156 975 Duplex Port operation 80 161 625 157 025 Duplex Port operation 81 161 675 157 075 Duplex Port...

Page 39: ...arrowband channel use This allows for additional channels to be added up to 80 Channels This simply means that the new narrowband radio you have purchased will have more channels than older radios Ple...

Page 40: ...131 8 1 67 0 21 136 5 2 71 9 22 141 3 3 74 4 23 146 2 4 77 0 24 151 4 5 79 7 25 156 7 6 82 5 26 162 2 7 85 4 27 167 9 8 88 5 28 173 8 9 91 5 29 179 9 10 94 8 30 186 2 11 97 4 31 192 8 12 100 0 32 203...

Page 41: ...3 11 054 46 261 81 506 12 065 47 263 82 516 13 071 48 265 83 523 14 072 49 266 84 526 15 073 50 271 85 532 16 074 51 274 86 546 17 114 52 306 87 565 18 115 53 311 88 606 19 116 54 315 89 612 20 122 55...

Page 42: ...only 3 476 475 477 225 CH33 23 476 975 RX only 4 476 500 477 250 CH34 24 477 000 5 476 525 477 275 CH35 25 477 025 6 476 550 477 300 CH36 26 477 050 7 476 575 477 325 CH37 27 477 075 8 476 600 477 350...

Page 43: ...125 477 2625 CH 74 64 477 0125 45 476 5375 477 2875 CH 75 65 477 0375 46 476 5625 477 3125 CH 76 66 477 0625 47 476 5875 477 3375 CH 77 67 477 0875 48 476 6125 477 3625 CH 78 68 477 1125 49 476 6375 6...

Page 44: ...s manual Using another charger may damage the battery or cause the battery to explode NOTE Li Ion Polymer batteries must be recycled or disposed of properly Avoid exposing the battery whether attache...

Page 45: ...e 3 years from the date of the original retail sale If a warranty claim is made this warranty will not apply if the Product is found by Uniden to be A Damaged or not maintained in a reasonable manner...

Page 46: ...is in addition to and sits alongside your rights under either the COMPETITION AND CONSUMER ACT 2010 Australia or the CONSUMER GUARANTEES ACT New Zealand as the case may be none of which can be exclud...

Page 47: ......

Page 48: ...2022 Uniden Australia Pty Limited Printed in Vietnam U01UT650DZZ 0...

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