Uniden MHS75 Support Question
Uniden MHS75 Support Question
Find answers below for this question about Uniden MHS75.Need a Uniden MHS75 manual? We have 1 online manual for this item!
Question posted by stafford5 on August 10th, 2013
Uniden Mhs75 Squelch Problem.
I have a lightly used Uniden mhs75 handheld marine radio with a squelch issue. Shortly after turning on the unit the squelch knob quits working. After powering down for a few minutes it workes again, but then quits. Just clicking and won't scan.
any ideas would be appreciated.
Current Answers
Related Uniden MHS75 Manual Pages
English Owners Manual - Page 4
...Limited Warranty Statement E-29
Uniden MHS75 Radio Owner's Manual E-17
...Using the radio in scan mode .... E-14 Attaching the belt clip E-14
Using Your Radio E-15 Changing the volume E-15 Setting the squelch level E-15 Changing the channel E-15 Making a transmission E-16 Boosting the transmission
power E-16 Setting the UIC channel mode... E-8 Scan mode operation E-9 Using the radio...
English Owners Manual - Page 5
Uniden MHS75 Radio Owner's Manual
E-1
Introduction
Features
The MHS75 provides the following key features:
• Submersible design Complies with JIS8/IPX8 water-resistant standards, which means the radio can be submerged in 1.5 meters of water for 30 minutes without damage.
• Memory scan mode Lets you save channels to memory and monitor them in quick succession.
•...
English Owners Manual - Page 6
E-2
Uniden MHS75 Radio Owner's Manual For information on available accessories, visit www.uniden.com.
Getting Started
What's included
MHS75 Radio
Antenna
DC Charger
Lithium Ion Battery
Belt Clip
Wrist Strap
If any pieces are missing or damaged, contact Uniden Customer Service (see back cover for contact information).
English Owners Manual - Page 7
...-power knob (Turn clockwise to talk button
16/9-Tri (16/9- Parts of the MHS75 Front view
Antenna
LCD display
WX-Alert (weather-alert)
button
Push to increase volume.)
Wrist strap anchor
UIC-Lock button
Channel up button
1/5W-2.5W button Channel down button
Microphone Speaker
Battery Battery charging Battery latch contacts
Belt clip
Uniden MHS75 Radio Owner...
English Owners Manual - Page 8
... and off.
NA
Lock the keys; press and hold to... Knob VolumePower
Squelch
Turn clockwise to...: Turn counter-clockwise to...:
Turn on and off.
DC Charger
Battery charging contacts
Power LED
12 V DC ("cigarette lighter") plug
Release tabs
E-4
Uniden MHS75 Radio Owner's Manual Raise the squelch level Lower the squelch level to hear to ... Transmit on a channel...
English Owners Manual - Page 9
... radio is stored in Scan mode. Uniden MHS75 Radio Owner's Manual
E-5 The radio is transmitting Battery status icon
Transmit power level (1, 2.5, or 5
Watts)
88
Key lock is on
UIC channel mode (USA, CANada, or
INTernational)
Triple Watch is
on . The radio is set to use US channels, CANadian channels, or INTernational channels. The current channel is turned on
The radio...
English Owners Manual - Page 10
... or Dual Watch on /off
(default mode) Press ScanDual. How It Works
The MHS75 radio has three main operation modes: normal mode, scan mode, and weather mode. Check a small group of regularly-used weather channel every 7 seconds.
Watch mode
What it does
To turn it on Weather Alert Watch.
Dual Watch
Checks channel 16 for...
English Owners Manual - Page 11
...transmit power (either 1 Watt or 5 Watts).
...used weather channel. Release the button when you are actively transmitting, the radio waits until you finish
Every 7 seconds, the radio checks wx
the last-used
weather channel
every seven seconds. Normal mode operation
• To transmit, remove the radio from your transmission before checking the weather channel.)
Uniden MHS75 Radio...
English Owners Manual - Page 12
... Dual Watch turned on
09 16
Normal mode with Triple Watch or Dual Watch If you are actively transmitting;
Triple Watch on
E-8
Uniden MHS75 Radio Owner's Manual The radio performs the Triple Watch and Weather Alert Watch checks at once (Quad Watch).
WX Alert Watch on
Every 7 seconds, the radio checks wx
the last-used weather channel...
English Owners Manual - Page 13
...Scan mode operation
You can save a channel into memory and then use scan mode to monitor those channels from memory, set the radio to that channel and resume scanning.
• To end the ...radio remains on a channel, press Channel Up to leave that channel, then press the Mem button. Uniden MHS75 Radio Owner's Manual
E-9
The Mem icon no longer shows on the display.
• When the radio...
English Owners Manual - Page 14
with Dual Watch turned on to scan the next channel; Triple
09 16
Watch on
Both Weather Alert and Triple/Dual Watch in scan mode
You can activate Weather Alert Watch and Triple/Dual Watch at their scheduled time:
E-10
Uniden MHS75 Radio Owner's Manual
Scan mode with Weather Alert Watch
If you activate Triple...
English Owners Manual - Page 15
... radio
checks the last-used
weather channel, then
scans the next channel.
Weather mode with the FCC to alert you don't need Weather Alert Watch to check the weather channel every seven seconds. If any button.
• To cancel weather mode and return to keep informed of the ten NOAA weather channels. Uniden MHS75 Radio...
English Owners Manual - Page 16
...the hook on it tightly onto the anchor post at the factory.
1.
E-12
Uniden MHS75 Radio Owner's Manual Rubber
Note: Each
seal
time you activate Triple Watch while operating
Monitoring...seal around the
battery compartment.
with Dual Watch turned on, the radio only checks
09 16 09 16 09 16
Every 2 seconds, the radio checks channel 9, then channel 16
with a rechargeable Lithium Ion ...
English Owners Manual - Page 17
... turn orange and remain lit. Using a different charger or battery can 't transmit, even if it rests flat in the compartment.
3.
Charging the battery
Connecting the charger Align the charger with this radio. Uniden MHS75 Radio Owner's Manual
E-13
CAUTION: Use only the battery and charger supplied with the battery (on the top of the charger to power. The power...
English Owners Manual - Page 19
... any channel noise.
At the lowest squelch level, the speaker plays all signals, including any background channel noise. If you from hearing weaker transmissions. turn the Volume-Power knob clockwise; Changing the channel
Press the Channel Up and Channel Down buttons briefly to scroll through the channels. Using Your Radio
Changing the volume
To increase the...
English Owners Manual - Page 20
...problems or situations where the Push to Talk button is all you need to boost the transmission power ...from 1 Watt to 2.5 Watts or 5 Watts:
• Press the 1/5W-2.5W button to switch from your talk time to 5 minutes...power channel, the radio automatically switches to 1 Watt or 5 Watts (whichever you were on page 19 for a list of receive-only channels. E-16
Uniden MHS75 Radio Owner's ...
English Owners Manual - Page 21
... transmit except in weather or scan
mode.
--
Common questions
Problem
Things to Try
The radio won't turn on a
receive-only channel or transmit at the wrong
The radio won't
power level for a replacement fuse and
charger doesn't turn on. Uniden MHS75 Radio Owner's Manual
E-17 If your current area uses Canadian or international channel assignments, press the UIC-Lock key...
English Owners Manual - Page 22
...use different channel assignments? battery compartment.
you are in scan mode. Where can I don't know why. Control Freq. Oper. Problem...
E-18
Uniden MHS75 Radio Owner's Manual Noise comes out of the speaker all the time
Adjust the squelch level; I can hear me.
Try turning off scanning... Speaker Power Source
Size (without antenna) Weight
All US/International/Canada marine channels ...
English Owners Manual - Page 23
...@ 2000Hz
Adjacent Channel Selectivity 75 dB @ ±25 kHz
Audio Output Power
0.4 W @10% THD
Current Drain
Squelched: 55 mA; Audio: 210 mA
Channels and Frequencies
US channel frequencies and names
US Marine Channels
Ch RX Freq TX Freq Status
Name
1A 156.050 156.050 ... Vessel traffic system
13 156.650 156.650 Simplex, 1W Bridge to bridge
Uniden MHS75 Radio Owner's Manual
E-19 Max.
English Owners Manual - Page 30
...; If you must maintain a watch on your boat. E-26
Uniden MHS75 Radio Owner's Manual See pages 19 through 25 for exclusive use in the United States. Coast Guard, use in Canada, and use of which channels to communicate.
If you must respond to the distress call , wait a few minutes to your boat, you are a few guidelines that have...
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