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Technical Support and Service

Your Uniden dealer can provide you with sales assistance and
information. If your marine radio does not perform properly, follow
the troubleshooting tips in the back of this operating guide. 
For technical support contact Uniden at 1-800-586-0409. The radio
contains no user-serviceable parts.
Unauthorized adjustment will void the warranty and may cause 
illegal radio operation.
Be sure that a qualified technician services your radio equipment.

Caution:

Changes or modifications to this product not expressly
approved by Uniden, or operation of this product in any way
other than as detailed by this Operating Guide, can void your
authority to operate this product.

Maritime Radio Services Operation

This transmitter will operate on channels/frequencies that have
restricted use in the United States. The channel assignments
include frequencies assigned for exclusive use of the U.S. Coast
Guard, use in Canada, and use in international waters. Operation in
these frequencies without proper authorization is strictly forbidden.
For frequencies/channels that are currently for use in the world see
page 19~24. Please contact the FCC Call Center at 1-888-CALL-
FCC for any additional channel information.

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UT899BH (MH120)_ENG  3/15/05  4:24 PM  Page 6

Summary of Contents for MH120

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Page 2: ...www uniden com ...

Page 3: ...nnel 16 9 TRI 11 Triple Watch 12 Monitoring Weather Channels 13 Emergency Weather Alert 14 USA International and Canadian Channels 15 Programming a Channel into Memory 15 Deleting a Channel from Memory 16 Scanning 16 Transmitting 17 Lighted Keys and Display 17 Turning off and reactivating the Key Beep 17 Battery Indicator 18 Key Lock 18 Marine Channels USA 19 Marine Channels International 21 Marin...

Page 4: ... WX ALERT 8 TX Power Lock Button 1 5W LOCK 9 Microphone 10 Speaker MIC Optional Jack 11 Volume Power Knob VOL 12 Squelch Knob SQ 13 LCD Display 14 Memory Button MEM 15 Scan Button SCAN 16 Channel Up Button 17 16 9 Triple Watch Button 16 9 TRI 18 Channel Down Button 19 Speaker MH 120 WX ALERT UIC 1 5W 16 9 TRI LOCK MIC MEN SCAN 1 2 3 4 5 6 8 7 9 11 12 13 14 10 15 16 17 18 19 ...

Page 5: ...ternational Canadian US INT CAN Indicator D Channel Number Display E Memory Indicator F Scan Indicator G Battery Indicator H Triple Watch Indicator I Weather Mode Indicator J Weather Alert Indicator K Key Lock Indicator G I K B C D A E F J H LCD Display ...

Page 6: ...tors are properly terminated Do not operate the transmitter of any radio equipment near electrical blasting caps or in an explosive atmosphere Do not let children operate any transmitter equipped radio equipment without proper supervision Have your radio equipment serviced by a qualified technician Do not operate the transmitter of any radio equipment with the antenna touching or close to the eyes...

Page 7: ...st from the MH 120 s features please read this operating guide carefully before using the unit Features Waterproof meets JIS4 waterproof specifications Triple Watch Mode Priority Channel Startup Channel 16 Programmable Memory One Touch Channel 16 9 10 Weather Channels Weather Alert Memory Scan USA International and Canadian Channels Battery Save Operation Key Lock Back Lit Keys and Display Belt Cl...

Page 8: ...is product not expressly approved by Uniden or operation of this product in any way other than as detailed by this Operating Guide can void your authority to operate this product Maritime Radio Services Operation This transmitter will operate on channels frequencies that have restricted use in the United States The channel assignments include frequencies assigned for exclusive use of the U S Coast...

Page 9: ...e box contact your Uniden Dealer or the Uniden Parts Department at 800 554 3988 Beltclip Wrist Strap RETC484647Z Alkaline Battery Case attached to the MH 120 MH 120 Antenna HH9408 Reference Guide Printed Material MH 12 0 WX ALE RT UIC 1 5W 16 9 TRI LOCK MIC MEN SCAN 7 ...

Page 10: ...2 halves apart applying your fingers to the projections Install 6 AA Alkaline batteries not included into the battery case Be certain to follow the and symbols in the compartment Replace the battery case cover as follows until it clicks into place Place the battery case onto the back of the radio It will only fit in one way Snap the battery release clip until it clicks Be sure the battery case fit...

Page 11: ...ip in the direction as illustrated Apply it to the hanger piece on the back of the radio Then slide it up When you hear a click the beltclip is firmly attached To take the beltclip off the radio turn it upside down and slide it up 4 3 2 1 9 ...

Page 12: ...clockwise until you hear a hissing sound Turn the SQ knob clockwise just until the hissing sound stops Use the knob to adjust to the desired squelch level Think of the squelch control as a frequency gate which controls access to weak or strong signals depending on its setting To listen to a weak or distant station turn the knob counterclockwise If reception is poor turn it clockwise to cut out wea...

Page 13: ...s and hold the or button for more than 1 second One touch Channel 16 9 TRI Example While you are monitoring channel 20 you want to check channel 16 or channel 9 You are now on channel 20 To monitor channel 16 press the 16 9 TRI button To monitor channel 9 press the 16 9 TRI button again To return to channel 20 press the 16 9 TRI button again 4 3 2 1 3 2 1 11 UP DOWN ...

Page 14: ...onfirmation tone sounds and TRIPLE appears on the display To exit from Triple Watch press and hold the 16 9 TRI button for 2 seconds A double confirmation tone sounds and TRIPLE disappears While in Triple Watch mode you can change the currently selected channel using the or button A momentary press of the 16 9 TRI button interrupts Triple Watch mode and remains on 16 or on channel 9 if you press o...

Page 15: ...sten to the emergency weather channels in your area press the WX ALERT button WX appears on the display To move up press the button To move down press the button To exit press the WX ALERT button WX disappears from the display To change the channel continuously press and hold the or button for more than 1 second 4 3 2 1 13 UP DOWN ...

Page 16: ...in your area Press and hold the WX ALERT button for 2 seconds A double confirmation tone sounds When the unit receives a warning signal it beeps for 5 seconds WX ALERT and the channel number blinks To turn Off Emergency Weather Alert press and hold the WX ALERT button for 2 seconds A double confirmation tone sounds When Emergency Weather Alert is activated the highest priority is given this functi...

Page 17: ...again CAN appears on the display The radio will keep the last mode setting that was selected when turned back On For USA international and Canadian marine channels and functions refer to the tables starting on page 19 Programming a Channel into Memory Before using the scanning feature you have to program channels into memory Select the channel to enter into memory by pressing the or button Press t...

Page 18: ... SCAN button once more SCAN and TRIPLE disappear from the display Scanning starts from the lowest to highest channel and stops when it finds an active channel It remains on that channel until the transmission ends then resumes scanning after a 2 second delay period When in the scan mode the unit automatically activates the Triple Watch feature To deactivate Triple Watch from the scanning mode pres...

Page 19: ...the battery indicator drops to the blinking 1 mark level on the display and the PTT key is pressed the radio will not transmit and the TX icon starts blinking Refer to the description of the Battery Indicator on the next page Lighted Keys and Display To light the display press any key excluding the PTT key If you press any button other than the PTT key while the display and keypad are illuminated ...

Page 20: ... blinking 1 mark level on the display the radio will receive but will not transmit Key Lock To prevent accidental entries you can lock the keypad Press and hold the 1 5W LOCK button for 2 seconds A double confirmation tone sounds LOCK appears on the display To unlock the keypad press and hold the 1 5W LOCK button again for 2 seconds A double confirmation tone sounds LOCK disappears from the displa...

Page 21: ...50 156 150 Com l Port Ops VTS Yes Yes 04 INH 05 156 250 156 250 Port Ops VTS Yes Yes 06 156 300 156 300 Safety Yes No 07 156 350 156 350 Com l Yes Yes 08 156 400 156 400 Com l Yes No 09 156 450 156 450 Com l Non Com l Yes Yes 10 156 500 156 500 Com l Yes Yes 11 156 550 156 550 Com l VTS SMS Yes Yes 12 156 600 156 600 Port Ops VTS SMS Yes Yes 13 156 650 156 650 Navigational 1W Yes No 14 156 700 156...

Page 22: ... 156 425 Non Com l Yes Yes 69 156 475 156 475 Non Com l Yes Yes 70 RX Only 156 525 71 156 575 156 575 Non Com l Yes Yes 72 156 625 156 625 Non Com l Yes No 73 156 675 156 675 Port Ops Yes Yes 74 156 725 156 725 Port Ops Yes Yes 77 156 875 156 875 Port Ops Yes No 78 156 925 156 925 Non Com l Yes Yes 79 156 975 156 975 Com l Yes Yes 80 157 025 157 025 Com l Yes Yes 81 157 075 157 075 U S Govt Only Y...

Page 23: ...r WX9 161 775 Can Weather RX Only RX Only Weather 01 156 050 160 650 Duplex Yes Yes 02 156 100 160 700 Duplex Yes Yes 03 156 150 160 750 Duplex Yes Yes 04 156 200 160 800 Duplex Yes Yes 05 156 250 160 850 Duplex Yes Yes 06 156 300 156 300 Yes No 07 156 350 160 950 Duplex Yes Yes 08 156 400 156 400 Yes No 09 156 450 156 450 Yes Yes Fish 10 156 500 156 500 Yes Yes 11 156 550 156 550 Yes Yes 12 156 6...

Page 24: ...ex Yes Yes 67 156 375 156 375 Yes No 68 156 425 156 425 Yes Yes Fish 69 156 475 156 475 Yes Yes Fish 70 RX Only 156 525 71 156 575 156 575 Yes Yes Fish 72 156 625 156 625 Yes No Fish 73 156 675 156 675 Yes Yes 74 156 725 156 725 Yes Yes 77 156 875 156 875 Yes No 78 156 925 161 525 Duplex Yes Yes 79 156 975 161 575 Duplex Yes Yes 80 157 025 161 625 Duplex Yes Yes 81 157 075 161 675 Duplex Yes Yes C...

Page 25: ... Weather RX Only RX Only 01 156 050 160 650 Duplex Yes Yes 02 156 100 160 700 Duplex Yes Yes 03 156 150 160 750 Duplex Yes Yes 04 156 200 156 200 Yes Yes 05 156 250 156 250 Yes Yes 06 156 300 156 300 Yes No 07 156 350 156 350 Yes Yes 08 156 400 156 400 Yes No 09 156 450 156 450 Yes Yes Fish 10 156 500 156 500 Yes Yes 11 156 550 156 550 Yes Yes 12 156 600 156 600 Yes Yes 13 156 650 156 650 1W Yes Y...

Page 26: ... Yes 67 156 375 156 375 Yes No 68 156 425 156 425 Yes Yes Fish 69 156 475 156 475 Yes Yes Fish 70 RX Only 156 525 71 156 575 156 575 Yes Yes Fish 72 156 625 156 625 Yes No Fish 73 156 675 156 675 Yes Yes 74 156 725 156 725 Yes Yes 77 156 875 156 875 Yes No 78 156 925 156 925 Yes Yes 79 156 975 156 975 Yes Yes 80 157 025 157 025 Yes Yes 81 157 075 157 075 Yes Yes Coast Guard 82 157 125 157 125 Yes ...

Page 27: ...nt 800 554 3988 Hours M F 8 00AM to 5 00PM CST We can also be reached on the web at www uniden com Cradle Ni MH Battery BP 250 Reference Guide Mounting Screws AC Adapter BADY0510001 DC Adapter Antenna HH9408 Wrist Strap RETC484647Z Beltclip Alkaline Battery Case 25 ...

Page 28: ...2 D mm Weight w antenna 6 3 oz 180g Transmitter w Ni MH battery Frequency Range 156 158 MHz Frequency Stability 10 PPM Power Output 1 0 W 5W Spurious Emissions 60 dBc 5W Current Drain 900mA 1W 1500mA 5W Receiver w Ni MH battery Receiver Type Double Conversion Super Heterodyne Phase Locked Loop system for Local Oscillator Frequency Range 156 164 MHz Sensitivity 0 35µV for 12dB SINAD Squelch Sensiti...

Page 29: ...Troubleshooting Not enough range Cause Line of sight blocked Increase antenna height Will not transmit on 5 watt range but will transmit on the 1 watt range Cause Low voltage Install new batteries 27 ...

Page 30: ...na Unauthorized antennas modifications or attachments could impair call quality damage the radio or result in violation of FCC regulations Do not use the radio with a damaged antenna If a damaged antenna comes into contact with the skin a minor burn may result Please contact your local dealer for a replacement antenna Body worn Operation This device was tested for typical body worn operations usin...

Page 31: ...d return it to you without charge for parts service or any other cost except shipping and handling incurred by warrantor or its representatives in connection with the performance of this warranty Warrantor at its option may replace the unit with a new or refurbished unit THE LIMITED WARRANTY SET FORTH ABOVE IS THE SOLE AND ENTIRE WARRANTY PERTAINING TO THE PRODUCT AND IS IN LIEU OF AND EXCLUDES AL...

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