JENSEN JHD910 2 Channel Amplified Audio Digital AM FM Tuner Owner’s Manual
- June 16, 2024
- Jensen
Table of Contents
JENSEN JHD910 2 Channel Amplified Audio Digital AM FM Tuner
Thank You!
Thank you for choosing a Jensen product. We hope you will find the
instructions in this owner’s manual clear and easy to follow. If you take a
few minutes to look through it, you’ll learn how to use all the features of
your new Jensen receiver for maximum enjoyment.
Features
Features of the Jensen JHD910 mobile audio system include:
- Waterproof
- UV and Corrosion-resistant
- Electronic US/Euro AM/FM Tuner
- 30 Programmable Presets (12 AM, 18 FM)
- Non-volatile memory for User Settings and Preset Memories
- 7-Channel NOAA Weather Band
- Weather Alert
- Auxiliary Audio Input
- Headphone Output
- 2-Channel Amplified Audio Output
- Backlit Controls with Selectable Illumination Color
- Daylight Readable Display
- Clock with 30-day Backup Power
- Work Timer
- Audible Beep confirmation tone
Package Contents
- JHD910 Radio
- Radio Mounting Bracket
- Headphone Mounting Bracket
- Five (5) 10-16 x 3/4” Stainless Steel PPH Screws
- Five (5) 10-32 x 5/8” Stainless Steel PPH Screws
- Five (5) 10-32 Stainless Steel Hex Nuts
- Five (5) #10 Stainless Steel Washers
- Four (4) M4 x .7 x 8MM Stainless Steel Hex Screws with Captivated Washers
- Wiring Harness
- Auxiliary Input Patch Cord
- Owner’s Manual
Installation
Mounting the Bracket
Two options are provided for mounting the bracket (self-tapping screws or machine screws with nuts) to ensure a mounting option ideal for your mounting location. Avoid obstructing airflow to the rear cooling fins on the radio.
Note: Mounting holes should be drilled to 7/32”. Before drilling the mounting holes, make sure the area behind the panel where the holes are desired is clear of wires and fuel, vacuum and or brake lines.
Attaching the Radio
Once the bracket is securely mounted, use the four included M4 machine screws
to fasten the bracket to the back of the radio. Alternately, the radio can be
mounted directly to the instrument panel if access to the rear of the
instrument panel is available.
CAUTION! Do not over tighten the 4 mounting screws. Hand tighten only.
Mounting the Headphone Bracket
Three options are provided for mounting the bracket (self-tapping screws,
machine screws with nuts or double-sided tape) to ensure a mounting option
ideal for your mounting location. Alternatively, the headphones can be mounted
directly to the instrument panel if access to the rear of the instrument panel
is available.
Note: Mounting holes should be drilled to 7/32”. Before drilling the mounting holes, make sure the area behind the panel where the holes are desired is clear of wires and fuel, vacuum and or brake lines.
Mounting Stack
Wiring
The wiring diagram depicts all the wiring connections required for the proper operation of the unit.
Basic Operation
Power
Press the power button (1) momentarily to turn the unit on or off. This button
is also used to access the version number of the software. To briefly display
the software version on the LCD, press and hold the power button for more than
five seconds.
Mute
Press MUTE (2) to silence the audio output in the tuner, weather band or
auxiliary input mode. When the audio output is silenced, “MUTE” will appear in
the display. If the mute feature is activated when the unit is turned off, the
volume will default to the programmed turn-on level when the unit is turned
back on.
Display
Press DISP (3) momentarily to toggle the LCD between function mode (showing
tuner, auxiliary input or weather band information, depending on which mode is
currently activated) and clock mode (showing the time).
Liquid Crystal Display
The Liquid Crystal Display (LCD) panel (4) displays the frequency, time and
activated functions.
Auxiliary Input Function
To connect a portable audio device (MP3 player, iPOD, etc.) to the JHD910, connect the headphone or line level output of the device to the 1/8″ auxiliary input jack of the JHD910 (5b) using the audio patch cord (included). Pres AUX (5a) to select auxiliary input mode.
Timer
Press TIMER (6) momentarily to directly access timer mode. Briefly press TIMER
to start the timer function, and the “TIMER” icon will flash in the display.
Press TIMER again to stop the timer, and the “TIMER” icon will remain in the
display (without flashing). Press the button again briefly to resume the
timer, or press and hold it for three seconds to reset it to zero and to
remove the “Timer” icon from the display.
Volume
Briefly press VOL+ (7a) or VOL- (7b) to adjust the volume up or down one step.
Press and hold VOL+ or VOL- for more than one second to continuously adjust
the volume level until the button is released. The current volume level (0 to
40) will appear in the display when the volume is adjusted, returning to the
default display three seconds after the adjustment is complete.
Setting the Clock
To set the clock to display the current time, press DISP for more than three
seconds to enter clock setting mode, and the time will flash in the display.
Press TUN- (8a) to adjust the hours or TUN+ (8b) to adjust the minutes. When
no adjustment is made for ten seconds, the time will be set and normal
operation will resume.
Audio and Menu Adjustment
Audio Adjustment
Press AUDIO/MENU (9) momentarily to step through the following audio
adjustment options: Bass, Treble and Balance (left to right). When the desired
option appears in the display, press VOL+ (7a) or VOL- (7b) to adjust that
audio feature. When no adjustments have been made for three seconds, the unit
will resume normal operation.
Menu Adjustment
Press AUDIO/MENU for more than three seconds to enter menu adjustment mode and
adjust any of the menu options: When the desired option appears in the
display, press VOL+ or VOL- to adjust that menu option. When no adjustments
have been made for three seconds, the unit will resume normal operation. The
following menu options may be adjusted using this feature:
- Beep Confirm (On or Off) – Determines if a beep will be heard each time a button is pressed.
- Operation Region (USA or Euro) – Select the appropriate operating region.
- Clock Display (12 or 24) – Select a 12-hour or 24-hour clock display.
- Display Brightness (Low, Mid or High) – Determines the brightness level of the display.
- Backlight Color (Amber or Green) – Determines the backlight colour of the unit.
- P-VOL [Power on Volume] (On or Off) – Determines if preset Turn On Volume will be set.
- Turn On Volume (0-40) – Select the desired volume level for the unit to assume when turned on.
- WB Alert (On or Off) – Determines if the weather band alert feature is activated.
- Default – Select to return to factory default settings.
NOTE: The underlined option denotes the default setting.
Tuner Operation
Select a Band
Press AM/FM (10) momentarily to directly access tuner mode from any other
function mode. When the unit is already in tuner mode, briefly press AM/FM to
change between two AM bands (AM1 and AM2) and three FM bands (FM1, FM2 and
FM3).
Note: If the unit is programmed for European operation, the sequence will be MW1, MW2, FM1, FM2 and FM3.
Manual Tuning
Press TUN- (11a) or TUN+ (11b) momentarily to tune the frequency one step
higher or lower. Press and hold TUN+ or TUN- for more than one second to tune
continuously in the selected direction until the button is released.
Seek Tuning
Press SEEK- (12a) or SEEK+ (12b) momentarily to automatically tune the
frequency down or up to the next strong station.
Preset Stations
Six numbered preset buttons (13) store and recall stations for each AM and FM band. To store a station, select a band (if needed), then select a station. Hold a preset button for three seconds. The current station will be stored, and the corresponding preset number will appear on the display. To recall a station, select a band (if needed). Press a preset button momentarily, and the unit will tune to the corresponding stored station.
Note: Preset buttons recall channels 1-6 on the weather band and cannot be set by the user.
Weather Band Operation
Accessing the Weather Band
Press WB (14) to directly access the weather band mode from any other function
mode.
What is the NOAA Weather Radio?
This is a nationwide system that broadcasts local weather emergency
information 24 hours a day. The U.S. network has more than 530 stations
covering the 50 states as well as the adjacent costal waters, Puerto Rico, the
U.S. Virgin Islands and the U.S. Pacific Territories. Each local area has its
transmitting station and there are a total of seven broadcasting frequencies
used: 162.400MHz (CH1), 162.425MHz (CH2), 162.450MHz (CH3), 162.475MHz (CH4),
162.500MHz (CH5), 162.525MHz (CH6) and 162.550MHz (CH7).
How many stations can I expect to receive?
Since the broadcasts are local weather and information, the transmission power
is usually very low (much less than AM or FM stations) so you will usually
receive only one station unless you are on the edge of two or more broadcast
signals. The most you will receive will be two or three, and that is rare.
Is it possible I won’t receive any stations?
Depending on location, you may receive a very weak signal or none at all.
Also, similar to AM and FM signals, weather band signals are subject to
surrounding conditions, weather, obstructions of the signal by hills or
mountains, etc. If no NOAA signals are found/received, the “NO SIG” icon will
flash in the display and the tuner will scan all seven NOAA frequencies every
30 seconds.
How will I know I am tuned to the weather band?
When you select the weather band, the “WB” icon will appear on the display
panel, along with the current channel indication. Press TUN+ or TUN- to tune
to each of the seven channels until you find the weather band station
broadcasting in your area.
NOAA Weather Alert
The Weather Alert function adds level of user safety by automatically
switching from the current function mode to weather band mode for a minimum of
60 seconds if a NOAA warning tone (1050 Hz) is received/detected. If no
additional warning tone is received for 60 seconds, the unit will switch back
to the last known function mode. The Weather Alert function can be turned “on”
or “off” by the Audio/Menu key, as described on page three. When “ON”
(default), the Weather Alert icon appears in the display and the weather tuner
remains active, even when the radio is turned off (as long as the power is
still applied to the radio). If a weather alert is issued, the radio will turn
on and play the announcement. for 60 seconds, then turn back off and revert to
weather alert monitor mode. If the Weather Alert function is set to “OFF”, no
Weather Alert icon appears in the display. The radio will not respond to any
weather alerts when it is off and will not automatically switch to the weather
band if an alert is issued.
Note: If the unit is programmed for European operation, the WB function will be disabled.
Troubleshooting
Note: Proper care and cleaning is essential to optimal operation. The JHD910 may be cleaned with mild detergent/water mixture and a soft cloth to remove grease and grime. Do not pressure wash directly on the radio.
Specifications
General
- Power Supply Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DC 12 Volts, Negative Ground
- Chassis Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131.6 (W) x 47.5 (D) x 86 (H)
- Loading Impedance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 -8 ohms per channel
- Tone Controls . . . . . . . . . . . . . . . . . . . . . . . . Bass (at 100 Hz), ±10 dB; Treble (at 10 kHz), ±10 dB
- Current Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 Ampere (max)
FM Tuner
- Tuning range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87.5-108.0
- FM mono sensitivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5uV
- Stereo separation @ 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >25dB
AM Tuner
- Tuning range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .522-1710
- Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <30uV
Weather Band
- Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <1uV
Amplifier
- Total system power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Watts Maximum
- Signal to Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >70dB
Specifications subject to change without notice.
Note: The manufacturer is not responsible for any radio or TV interference caused by unauthorized modifications to this equipment. Such modifications could void the User’s authority to operate the equipment.
This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions:
- This device may not cause harmful interference, and
- This device must accept any interference received, including interference that may cause undesired operation.
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