Nady Systems Two Way Radio MRC 11X User Manual

MRC-11X  
Motorcycle Radio Communicator  
OWNER’S MANUAL  
 
ADVANCED FEATURES SUMMARY  
• FRS, GMRS, & shared FRS/GMRS (22 channels total / 462-467MHz)  
• Choice of 6 distinct Call tones for calling each of 6 other parties individually  
• 38 CTCSS privacy (lockout) tones  
• VOX (hands-free) transmission with 4-level sensitivity adjust user selectable for  
optimizing accurate triggering with varying background noise  
• Driver/Passenger Full duplex intercom (Simultaneous two-way)  
• AUX. (Stereo Audio Input)  
Two-level transmit power automatically selected:  
FRS channels: Low=0.5W, up to 2 mile range  
GMRS channels: High=3.0W, up to 7 mile range  
• Software Set key for all controls  
• Auto dual channel monitoring (receive and transmit)  
• Special noise reduction circuitry for quieter operation  
• Stopwatch  
WARNINGS  
• Potentially Explosive Atmospheres: Turn your unit OFF when in any area with a  
potentially explosive atmosphere, such as at a gasoline station filling area. Sparks  
in such areas could cause an explosion or fire, resulting in bodily injury or even  
death. Do not replace or charge batteries in a potentially explosive atmosphere.  
Contact sparking may occur while installing or removing batteries and cause an  
explosion. NOTE: Areas with potentially explosive atmospheres are often but not  
always, clearly marked. They include fueling areas such as below deck on boats,  
fuel or chemical transfer or storage facilities: areas where the air contains chemicals  
or particles, such as grain, dust, or metal powders: and any other area where you  
would normally be advised to turn off your vehicle engine.  
• Blasting Areas: To avoid possible interference with blasting operations, turn your  
unit OFF near electrical blasting caps or in a blasting area or in areas posted. Obey  
all signs and instructions.  
• Never connect this unit to more than 7.5 volts as will seriously damage the unit and  
void the warranty. Never, for example, attempt to hook up external power to the  
CHG (charger) power input from the motorcycle’s cigarette lighter or other source of  
12V. You cannot operate the unit on external power.  
• Do not open your radio to make any internal adjustments. Your radio is set up to  
transmit a regulated signal on one of the 22 assigned frequencies (FRS/GMRS). It is  
against the law to alter or adjust the setting inside the radio to exceed those  
limitations. Any adjustment to your radio must be made by a qualified technician  
using the proper test equipment. Note that such tampering will void the warranty.  
• Always save your receipt as you will need it to establish proof-of-purchase date if  
your unit ever needs service under the warranty.  
STANDARD FEATURES SUMMARY  
• Max 1.3 Minute per time for transmit (for  
Protect)  
• Page / Calling button  
• Battery power low indication on LCD  
• Six-level digital speaker volume select  
• Auto squelch  
• Monitor / Scan button  
• Internal EEPROM for automatically  
saving data entered  
• Auto save of last settings when unit is  
shut off  
• All channels can store different CTCSS  
code.  
• Auto power save (standby mode)  
• Auto Scan and Manual Monitor  
• Power on beep tone  
• Beep tone for confirmation of key  
• Key lock on/off selectable  
• Back light LCD with 18 function  
readout  
TO BE SAFE  
• Dual channel or basic channel  
selectable  
Never open your radio’s case. Modifying or tampering with the radio’s internal  
components can cause a malfunction and invalidate its warranty and void your FCC  
authorization to operate it. If your radio it not performing as it should, call the NADY  
Service department (see page 22).  
WARNINGS  
• While this unit has been designed for ruggedness, it is a precision piece of  
electronic equipment that should not be exposed to water or handled carelessly.  
Normal care should result in years of trouble-free operation.  
• Do not leave batteries installed over a long period of time as leakage may occur,  
which can destroy the unit. All batteries can cause property damage and/or bodily  
injury, such as burns, if conductive material such as jewelry, keys or beaded chains  
touch exposed terminals. The material may complete an electrical circuit (short  
circuit) and become quite hot. Exercise care in handling any charged battery,  
particularly when placing it inside a pocket, purse or other container with metal  
objects.  
Never change or replace anything in your radio except the batteries  
Your radio might cause TV or radio interference even when it is operating properly. To  
determine whether your radio is causing the interference, turn it off. If the interference  
goes away, your radio is causing it. Eliminate the interference by moving your radio  
away from the receiver.  
If you cannot eliminate the interference, the FCC requires that you stop using the  
radio.  
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.  
• This device must accept any interference received, including interference that may  
cause undesired operation.  
• The antenna is permanently attached to the unit. Never attempt to remove it. Do  
not use any unit that has a damaged antenna. If a damaged antenna comes in  
contact with the skin, It may cause a minor burn.  
• For vehicles with an air bag: Do not place your unit in the area over an air bag or in  
the airbag deployment area. Air bags inflate with great force. If a unit is placed in  
the air bag deployment area and the air bag inflates, the unit may be propelled with  
great force and cause serious injury to the occupants of the vehicle.  
4
5
 
EXPOSURE TO RADIO FREQUENCY ENERGY  
INCLUDED AND OPTIONAL ACCESSORIES  
The design of your MRC-11X, which generates radio frequency (RF) electromagnetic  
energy (EME), complies with the following national and international standards and  
guidelines.  
The following is included in each package:  
• MRC-11X Motorcycle Communicator  
• MHS-11XO premium open-face helmet-mount headset with microphone for driver  
and ext. PTT button  
• FCC Report and Order FCC 96- 326 ( August, 1996)  
• American National Standards Institute ( C95- 1- 1992)  
• User Manual  
• National Council on Radiation Protection and Measurements (NCRP - 1986 )  
• International Commission on Non- lonizing Radiation Protection ( ICNRP - 1986)  
To ensure optimal unit performance and to ensure that exposure to RF energy is  
within the guidelines in the above standards, the following operating procedures  
should be observed:  
• Warranty Card  
• Optional Accessories Ordering Form  
The following are optional accessories (see also included Optional Accessories  
Ordering Form):  
• MHS-11XO premium open-face helmet-mount headset with microphone for driver  
or passenger and ext. PTT button  
• MHS-11XC premium closed-face helmet-mount headset with microphone for  
driver or passenger and ext. PTT button  
• MO-1 standard open-face helmet-mount headset with microphone for passenger  
• MC-1 standard closed-face helmet-mount headset with microphone for driver or  
passenger  
For Portable Two-Way Communicators  
• When transmitting with a handheld MRC-11X, hold the unit in a vertical position  
with its microphone 1 to 2 inches ( 2. 5 to 5.0 cm ) away from your mouth. Keep the  
antenna at least 1 inch (2.5cm) from your head and body.  
• If you wear the unit on your body, ensure that the antenna is at least one inch  
(2.5cm) from your body when transmitting.  
• BC-11X battery charger (for 100-240V ~ 50/60Hz input) for internally charging the  
MRC-11X batteries (plugs into the PSG/CHG jack)  
Electromagnetic Interference/ Compatibility  
Nearly every electronic device is susceptible to electromagnetic interference  
(EMI) of inadequately shielded, designed or otherwise configured for electromagnetic  
compatibility.  
INSTALLING BATTERIES  
Turn your unit OFF in any facilities where posted notices instruct you to do so.  
Hospitals or health care facilities may be using equipment that is sensitive to  
external RF energy.  
Your radio requires four AAA alkaline or NiCad or NiMH Rechargeable batteries for  
power. For the best performance and longest life, please note the following cautions:  
Turn your unit OFF when on board an aircraft when instructed to do so. Any use of  
the unit must be in accordance with airline regulations or crew instructions.  
• Use only fresh batteries of the  
required size and recommended  
type.  
• Do not mix old and new batteries,  
different type of batteries (alkaline  
or rechargeable), or rechargeable  
batteries of different capacity.  
• Follow these steps to install  
batteries.  
1) Turn off the radio. Remove belt  
clip and slide off the battery  
compartment cover.  
CARE AND MAINTENANCE  
To enjoy your radio for a long time:  
• Keep the radio dry. If the unit gets wet, turn it off and remove the batteries  
immediately. Dry the battery compartment with a soft cloth to minimize potential  
water damage. Leave cover off the battery compartment overnight or until  
completely dry. Do not use the unit until completely dry.  
• Use and store the radio only in normal temperature environments.  
• Handle the radio gently and carefully. Do not drop it.  
2) Install four AAA batteries  
according to the polarity symbols  
(+ and -) marked inside.  
• Keep the radio away from dust and dirt.  
• Wipe the radio with a damp cloth occasionally to keep it looking new.  
• Don’t use cleaners or solvents on the unit; they can harm the case and leak inside,  
causing permanent damage. Battery contacts may be wiped with a dry, lint- free  
cloth.  
3) Replace the cover and belt clip.  
Note:  
1) Dispose of old batteries promptly and properly. Do not burn them.  
2) If you do not plan to use the unit for a month or longer, remove the batteries.  
Batteries can leak chemicals that can destroy electronic parts. The warranty does not  
cover damage caused by leaking batteries.  
6
7
 
RECHARGING NI-CAD OR NI-MH BATTERIES  
A QUICK LOOK AT YOUR RADIO  
See Low Batteries Power Indication section on page 12, for instructions for  
determining when batteries are low.  
Warning:  
• Do not attempt to charge alkaline batteries. Non-rechargeable batteries can get  
hot or explode if you try to recharge them. Never attempt to charge non-  
rechargeable batteries.  
1
• If you use rechargeable Ni-CAD or Ni-MH batteries, you can recharge them  
between uses externally in any appropriate commercially available charger or  
you can recharge them internally (in the unit) using the optional BC-11X adapter  
(see Optional Accessories Ordering Form included).  
2
3
4
5
Please note: (1) Do not attempt to use any other adapter than the optional  
BC-11X for charging the batteries as they can damage the unit. (2) You cannot  
power the unit with the optional BC-11X as the unit can only be powered for  
operation with the internal batteries.  
• Internally charging the batteries with the optional BC-11X charger:  
1) Use the PWR/SET button to turn off the MRC-11X (the unit can not be charged  
when it is on)  
2) Slide off the battery compartment cover, and install the batteries.  
3) Connect the charger’s RS (Ring-Sleeve) plug to the radio’s PSG/CHG jack and  
plug its other end to a standard AC outlet.  
15  
13  
6
14  
7
8
12  
4) A complete charge takes about 7 hours.  
(Note: do not charge for longer periods as overcharging can damage the batteries)  
10  
11  
9
1. Antenna  
2. DRV (driver headset) jack  
3. PSG/CHG (passenger headset/internal charging) jack  
4. PWR/SET (on-off/mode selected set) button (key)  
5. LCD display  
6. AUX (auxiliary music source input) jack  
7. UP/DOWN (select) buttons (keys)  
8. Internal microphone  
9. Internal speaker  
10. CALL button (key)  
11. Battery compartment (on back)  
12. MOD (mode select) button (key)  
13. SCAN (scan/monitor select) button (key)  
14. PTT (push-to-talk) button (key)  
15. TX (Transmit) LED indicator  
8
9
 
LCD DISPLAY DESCRIPTION  
CONTROLS  
• PWR/SET key  
F
H
A
E
1. Press and hold key for over 3 seconds to turn the power on/off  
2. Press momentarily to set data selected and to exit to standby after setting mode  
• DOWN key  
1. Press key momentarily to set channel when in the channel set mode  
2. Press and hold key for over 2 seconds in standby to turn VOX on/off  
3. Press key momentarily in standby to turn volume level down  
• UP key  
G
I
B
J
1. Press key momentarily to set channel when in the channel set mode  
2. Press and hold key for over 2 seconds in standby to set key lock or key unlock  
3. Press key momentarily in standby to turn volume level up  
• PTT key  
Press and hold to transmit (talk)  
• CALL key  
1. Press momentarily in standby to call other parties with preset call tone in standby  
2. Press and hold for over 2 seconds in standby to switch into stopwatch mode  
• SCAN key  
1. Press momentarily in standby to defeat autosquelch for monitoring  
2. Press and hold in standby for 2 seconds to auto scan all channels  
• MODE key  
1. Press and hold key in standby for over 2 seconds to enter set mode.  
2. Press key in set mode to select the next mode.  
• BACK-LIGHT will turn on if any keys are pressed and turn off 5 seconds after  
pressing the last key  
C
M
L
D
K
A) Channel Number. Changes from 1 to 22 as selected by user.  
B) Displays either an L (for FRS low power mode) or an H (for GMRS high  
power mode).  
C) Battery power level indicator. Displays the current battery level charge.  
D) Displays the current CTCSS code.  
E) RADIO ON indicator  
F) Key Lock ON indicator  
G) Transmit mode, Receive mode indicators  
H) CTCSS ON indicator  
I) Volume level indicator. Changes from 1 to 6 as selected by user.  
J) Dual Watch monitoring mode (dual channel)  
K) Voice level sensitivity indicator for VOX hands-free operation. Displays the current  
VOX level selected (1-4).  
L) Basic Channel Mode indicator  
M) Displays “INT” when in intercom mode  
Note: If you already have experience in operating such radios, after familiarizing  
yourself with the controls of the MRC-11X you may wish to just go directly to the  
Navigation Menu on page 23.  
DISPLAY  
DESCRIPTION  
Key lock ON  
Receive mode  
Transmit mode  
Battery power level indicator  
Intercom  
Basic channel mode  
Voice level for VOX hand-free  
Dual channel mode  
CTCSS on  
RADIO mode  
Stopwatch mode:  
for minute of clock  
for mil-second  
for second of clock,  
FRS mode:  
for channel number  
for CTCSS number  
10  
11  
 
LOW BATTERIES POWER INDICATION  
OPERATIONMANUAL
As you use the unit, the battery icon’s elements will disappear  
one by one to show the remaining power. When only one  
element remains, replace alkaline batteries or recharge NiCad or  
Ni-MH batteries as soon as possible.  
Turning On with the PWR/SET Key  
Press and hold the PWR/SET key for over 3 seconds to turn the unit on/off. The unit  
will “beep” when turning the unit on/off and the LCD screen will light when unit is on.  
Setting Volume level with the UP and DOWN Keys  
USING THE BELT CLIP  
Press either the UP or DOWN keys once momentarily to enter volume setting mode.  
Press the UP key or DOWN key again to increase or decrease volume level from 1 to  
6 as shown on the volume icon of the LCD display. Press the PWR/SET key  
momentarily to set or it will automatically set in 15 seconds. A beep will sound to  
confirm this setting.  
To use the supplied belt clip, insert the clip fully  
into the slot at the back of the radio unit. To  
remove the clip, press the top of the clip and slide  
it out. The belt clip needs to be removed before  
changing/installing the batteries for full access to  
the battery compartment.  
Receiving an Incoming Call (Standby Mode)  
In standby mode (not programming or selecting functions), the unit automatically will  
receive incoming calls from any other unit on the same channel and CTCSS code  
whenever you are not talking/transmitting. When you receive a signal, the ( ) icon  
appears on the display.  
USING EXTERNAL MICROPHONE/SPEAKER  
HEADSETS  
The MRC-11X is supplied with an MHS-11XO headset for the driver. If the unit will  
also be used for driver/passenger communications, an optional second headset can  
be purchased for the passenger (see the Optional Accessories Ordering Form  
enclosed for more info re the choice of the premium MHS-11XC/O or the standard  
MO-1/MC-1 headsets). When the driver headset is plugged into the DRV jack on the  
unit’s top panel, it automatically disables the MRC-11X’s built-in Mic and speaker,  
and the headset must be used for all communication.  
Transmitting a Signal Using the PTT Key  
Check the channel activity by pressing and holding the SCAN button. You will hear  
static if the channel is unoccupied. Do not TRANSMIT if someone is talking on the  
channel. Press and hold the PTT button to TRANSMIT. The ( ) icon is displayed. The  
TX LED indicator will light up in red. Hold the unit in a vertical position with the  
MICROPHONE 1 to 2 inches from the mouth. While holding the PTT button, speak  
into the unit using a normal tone of voice. Release the PTT button when you have  
finished transmitting. The automatic end-of-message “Roger” tone will sound and  
you can then listen for another party’s response.  
(Note: Always make sure the unit is off or the volume at minimum before plugging in  
the headsets and placing them on the head.)  
NOTE: In order for other people to receive your transmission, they must also be on  
the same channel you are currently using. Refer to the Changing Channels section for  
more information.  
After you hold down the TALK key continuously for about 80 seconds, the unit will  
automatically stop your transmission to save power. If necessary to continue  
transmitting, wait a few seconds before proceeding.  
Calling Another Party with the CALL Key  
Use the CALL key to alert another party you wish to communicate with them. Both  
units must be set to the same channel and CTCSS code. Momentarily press and  
release the CALL key to call the other party with a 3-second calling alert tone. Wait  
for the party’s response or proceed to “Talking to Another Party using the PTT Key”.  
See pg. 17 for instructions on how to select one of 6 different call tones for individual  
paging when using your unit with a group. You can also use the CALL Tones to signal  
the beginning or the end of a transmission.  
MHS-11XC  
MO-1  
Dual Channels Receiver and Transmit (Dual Watch Mode)  
Dual channels reception: If the dual channels setting is OFF, the (  
) icon  
appears on the display and you only have the basic single channel reception. If the  
MHS-11XO  
MC-1  
12  
13  
 
OPERATION MANUAL  
OPERATIONMANUAL
CTCSS code set  
dual channels setting is selected ON, the (  
) icon appears on the display and the  
You can select any one of the 38 available CTCSS privacy (lockout) codes for each of  
the 22 channels while the CTCSS icon is flashing. See pg. 16, “ Setting Functions” for  
instructions for how to enter CTCSS Select mode to get CTCSS icon to flash. Press  
the UP or DOWN key to select the desired code number for that channel. Press the  
MOD key again to save the CTCSS number selected. Press the PWR/SET key  
momentarily to exit.  
unit will receive one either of the dual channel selected (basic channel and second  
channel). This Dual Watch monitor mode is especially useful when the signal you  
want to hear is consistently weak  
Dual channels transmission: If the dual channels in on, the ( ) icon appears on the  
display and the unit can transmit on either of dual channels (basic channel and  
second channel). Hold down the TALK key to the transmit on the basic channel, and  
press and release the MODE key and then hold down the TALK key to transmit on the  
second channel (the second channel number will then appear on the display).  
Auto Squelch  
This unit is equipped with an auto squelch that we’ll automatically shut off weak  
transmissions and unwanted noise due to terrain conditions or if you reach the  
operating range limit. It can be defeated (turned off) by pressing the SCAN key. See  
also “Scan (Auto Monitoring) pg 14.  
Radio & Intercom / Intercom  
Intercom only: In the Intercom mode ( ) icon, insert the driver and passenger  
headsets into the appropriate jacks on the top panel as marked on the rubber cover  
plug. The driver and the passenger can then communicate with each other  
simultaneously (full duplex).  
Stopwatch  
To enter the stopwatch mode, press and hold the CALL key for over 2 seconds.  
In stopwatch mode, press the TALK key to start count, and press the TALK key again  
to stop. While the watch is stopped, press the CALL key to reset the counter, press  
the TALK key to restart the watch. To freeze the LCD display while counting, press the  
CALL key once momentarily. To pick up the current count, press the CALL key once  
again momentarily. Press any of the other keys to exit stopwatch mode at any time  
and set the unit into standby mode.  
Radio & intercom: In the Radio & Intercom mode (  
) icon, when the driver and  
the passenger headsets are connected, the unit will automatically also be in the  
Intercom mode. Both headsets will hear any received audio and both of the  
microphones are able to transmit audio and trigger the VOX.  
VOX (voice-activated hands-free operation)  
In standby mode, press and hold the DOWN key for over 2 seconds to turn the VOX  
on/off. The VOX (  
) icon appears on the display whenever the VOX mode is  
AUX (Stereo Auxiliary Audio Input) Jack  
turned on. To optimize the VOX operation, you can select 1 of 4 different input volume  
levels for triggering the VOX, depending on the background ambient noise and your  
speaking level. See “ Setting Functions”, pg. 16, for instructions for choosing the  
VOX level desired.  
A tape player, radio or CD (or any other external music source) can be connected to  
the AUX (Auxiliary In) stereo jack to allow both the driver and passenger (if any) to  
also hear music while either conversing with each other or with other bikes. This  
function works in any mode, and the AUX audio will not be transmitted or heard by  
the other parties you are communicating with. The audio level heard needs to be  
adjusted with the volume adjust knob of the music source.  
Key Lock  
The purpose of the Lock function is to lock most keys to avoid accidental operation.  
In standby mode, press and hold the UP key for over 2 seconds to turn on the key  
Driver / Passenger + charger jacks with external PTT  
lock. The (  
) icon appears on the display. Press and hold the UP key again to turn  
The MRC-11X is specially designed with DRV/PSG+CHG jacks with external PTT  
(push-to-talk) capability. Both the DRV and PSG jacks accept the MHS-11X (C or O)  
headset/microphone for motorcycle, with external PTT mounting on the handlebar  
(one headset is supplied with the unit). If the unit will also be used for driver/  
passenger communications, an optional MO-1 or MC-1 headset for the PSG jack is  
needed (see the enclosed Optional Ordering Form for Accessories). When the driver  
headset is plugged into the DRV jack on the unit’s top panel, it automatically disables  
the MRC-11X’s built-in Mic and speaker, and the headset must be used for all  
communication. The PSG jack also accepts the external optional BC-11X battery  
charger to charge the Ni-CAD or Ni-MH rechargeable batteries internally. For charging  
instruction see pg. 8, “Recharging Ni-CAD or Ni-MH Batteries”.  
off the key lock. While the unit is set to the key lock status, only the TALK, UP and  
SCAN keys will have any response.  
Scan (Auto Monitor)  
Auto Monitor: When the signal you want to hear is consistently weak, you may place  
the radio in monitor mode, which will defeat the auto squelch, and thus prevent the  
muting of weak signals. However, between receptions you will then also hear the  
normal loud radio hiss, since the auto squelch is off. Press the SCAN key  
momentarily to enter monitor mode. To return to normal operation, press any key. See  
also “ Auto Squelch”.  
Scan: Press and hold SCAN key for over 2 seconds to start scanning all the channels  
in the up direction. To exit the scan mode and select the channel being displayed at  
any point to be the basic channel, press any other key.  
14  
15  
 
OPERATION MANUAL  
OPERATION MANUAL  
Setting Calling Tone Type  
Setting Functions  
When the unit is off, press and hold the PWR/SET key and the SCAN key  
simultaneously till the unit beeps. The unit’s full LCD display, showing all icons, will  
light up. You can now select the call tone type.  
For all the function set modes:  
• Press the MODE key to save the set number selected and enter the next set mode.  
Press the PWR/SET key to save the set number and exit the set mode. Press the UP  
key or DOWN key to change the set number or status. Press any other keys to exit  
the set mode.  
• While the unit is in standby mode, press the MOD key for 2 seconds (till unit beeps)  
to enter the set mode. This allows a choice of seven different sequential modes to  
set: (1) Basic channel select, (2) Basic CTCSS code number selected, (3) VOX level  
select, (4) Dual channel scan, (5) Second channel select, (6) Second CTCSS code  
number select, (7) Radio/Intercom or Intercom select. Press PWR/SET key anytime to  
set selection and return to standby mode.  
Press the CALL key to sound the first choice of 6 different call tones available. You  
can either press the CALL button again in sequence to select and sound the other  
available tones or scroll through them all with the UP and DOWN buttons. When you  
have the call you wish to transmit selected, press either the MOD or the SET key to  
save. This tone will now be transmitted whenever you press the CALL button in  
standby mode until you select another tone. Press SET key again to turn the power  
off.  
See also the section Call Tone Setting in the Navigating Menu, page 23  
• (1) Basic channel select: While the unit in set mode, press the UP key to increase  
the channel, press the DOWN key to decrease the channel. Press the MODE key  
momentarily (unit will beep) to save the selected basic channel and to set the CTCSS  
code for the basic channel selected.  
• (2) Basic CTCSS code number selected: Press the DOWN key or the UP key to  
change the CTCSS code. Press the MODE key again to save the CTCSS number  
selected and to set the VOX level.  
Optimizing Range  
Your MRC-11X radio has a range of up to 2 miles for 0.5 watts, up to 7 miles for 3.0  
watts under the most ideal conditions such as wide, open flat terrain. This effective  
range can be shortened by signal attenuation caused by buildings, vehicles, and  
other obstructions such as dense foliage and hilly terrain.  
• UHF operation allows the MRC-11X to provide communication that is virtually free  
of the atmospheric interference that is often common with lower frequency bands.  
Additionally, higher power and an antenna system that is very efficient as compared  
to other unlicensed radio bands (such as 49MHz) often used for motorcycle  
communicators, further enable the farther operating range of the MRC-11X.  
• Often the limits to maximum possible range are environment factors such as  
blockage caused by trees, buildings, hills or other obstructions. Sometimes you may  
find communication suddenly not possible (localized dropout zone), and this can  
almost always be overcome by moving only a few feet to a new location. Be aware  
that the range may be greatly reduced while operating in a vehicle or metal building.  
• Battery condition also effects range, with fresher batteries providing greater  
transmitted output power. The MRC-11X operates on rechargeable Ni-CAD or Ni-MH  
batteries or ordinary alkaline batteries.  
• Since the body absorbs some radiated energy, thus reducing range, note that  
holding the unit in your hand, or mounting it on your bike’s handlebars (so the unit is  
away from your body) will ultimately maximize range under all conditions. However,  
normal mounting on your belt or clothing is often more convenient and should  
provide sufficient range for most bike-to-bike communications. If maximum range is  
needed, experiment with the unit placement for best performance.  
• (3) VOX level select: Press the UP key or the DOWN key to select one of the 4  
different VOX sensitivity levels. Press the MODE key to save the VOX level selected  
and to set the dual channel mode on or off.  
• (4) Dual channel scan: Press either the UP or the DOWN key to turn the dual  
channel scan on or off. Press the MODE key to save channel status and enter next  
mode. When the dual channel mode is set to on, and the ( ) icon is displayed, you  
can set the second channel. When the dual channel scan is set to off, proceed to (7)  
Radio/Intercom mode.  
• (5) Second channel select: Press the UP or DOWN key to select the channel and  
the MODE key again to save the second channel and to set the second channel  
CTCSS code.  
• (6) Second CTCSS code number select: Press the UP or DOWN key to select the  
CTCSS code and the MODE key again to save second channel CTCSS code and to  
set the Radio/Intercom on/off.  
• (7) Radio/Intercom or Intercom select: Press either the UP or DOWN key to  
select between Radio/Intercom (both  
and  
icons displayed) or intercom (  
icon) only. Press either the MODE or PWR/SET key again to save all status and exit  
set mode back to standby.  
Note: This unit cannot ensure privacy in communications.  
16  
17  
 
GENERAL SPECIFICATIONS  
TROUBLESHOOTING  
SYMPTOM — No Power  
Operating Frequency Range ............................................... 462.563MHz-467.713MHz  
Number of Channels ........................................................... 22 total/GMRS + FRS  
Effective Radiated Power ................................................... GMRS channels: 3W @ 6.0VDC  
FRS channels: 500mW @ 6.0VDC  
SOLUTION  
• Check batteries. Ensure that the batteries are installed correctly  
• The batteries may be weak.  
• Replace old batteries with four (4) new AAA alkaline or fully charged Ni- MH or  
NiCad rechargeable batteries.  
(power automatically selected for  
channels as required by FCC)  
Range.................................................................................. Up to 7 miles (11Km) line-of-sight,  
3/4 to 2 miles typical  
SYMPTOM — Weak Reception  
SOLUTION  
Modulation .......................................................................... FM, +/-1.5kHz  
Carrier Frequency stability .................................................. +/- 2PPM  
Harmonic Suppression ....................................................... >50dB  
Carrier Attack Time ............................................................. 30ms  
Receiver I.F. Frequencies .................................................... 1st: 21.6MHz, 2nd: 455KHz  
Receiver Sensitivity (12 dB Sinad) ...................................... 0.4uV  
Receiver Selectivity............................................................. 50dB  
Max S/N ratio @-60dBm RF input ...................................... 50dB  
Squelch sensitivity .............................................................. -118dBm  
Attack time .......................................................................... 120ms  
Closing time ........................................................................ 200ms  
Nominal Audio Output ........................................................ 200mW  
Audio Frequency Response ................................................ 300-3000Hz  
Audio distortion .................................................................. <1% (@1KHz deviation and 1mV RF input)  
Max. Audio Output @10% THD .......................................... 350mW  
Internal Speaker (deactivated when using headset) ........... 8 ohm/0.25W  
Internal Microphone (deactivated when using headset) ..... Electret condenser  
Microphone Sensitivity ....................................................... 10mV @ 1.5KHz deviation  
Low Battery Display Threshold ........................................... 4.3-4.6VDC  
Transmit Current (4.6VDC High Power) .............................. <0.8A (TX); <30mA (STBY); <100mA (RX)  
Current Drain (Intercom) ..................................................... <100mA  
Standby Current (4.6VDC) .................................................. <30mA  
Power Required .................................................................. 4 Ni-Cad, NiMH  
or Alkaline AAA batteries (4.6-6.0 VDC)  
• Press the UP button to increase VOLUME.  
• The receiving signal may be weak and/ or out of range. If this happens press the  
SCAN button to defeat the AutoSquelch .  
SYMPTOM — Can Not Change Channels  
SOLUTION  
To change channels, press the MOD button until the Channel number flashes on the  
LCD Screen. Press the UP or DOWN button to change channels.  
• Batteries may be weak and need replacement. Replace with new batteries if the  
BATTERY CHARGE LEVEL indicator is low.  
SYMPTOM — Limited Range  
SOLUTION  
• Batteries may be weak and need replacement. Replace with new batteries if the  
BATTERY CHARGE LEVEL indicator is low.  
• The maximum range will vary depending on terrain and environment. Open fields  
provide the maximum range, while structures, heavy foliage and use in buildings  
and in vehicles may limit the range significantly.  
• Wearing the radio close to the body, such as in a pocket or on a belt, will decrease  
range. Change the location of the radio away from the body for optimum range  
under any conditions.  
SYMPTOM — Sound Distortion Problems  
SOLUTION  
• If you are transmitting, speak in a normal tone of voice, 1 to 2 inches away from the  
MICROPHONE.  
• If you are receiving, lower the VOLUME to a comfortable level.  
• Radios may be too close. Radios must be at least 5 feet apart. Increase your  
separation distance.  
Battery Life 4.6VDC (4xAAA)............................................... >48 HR (RX)  
Max. Audio output @ 10% THD Current ............................. <200mA  
Dimensions/Weight ............................................................. 2.5" X 4.0" X 1.0" (63.4 X 101.6 X 25.4mm)  
5.1oz / 143g (without batteries)  
• Radios too far apart. Obstacles may be interfering with transmission. Shorten your  
operating distance.  
18  
19  
 
CTCSS CODES  
CHANNEL CROSS REFERENCE CHART  
ASSIGNMENT  
CODE NO.  
ASSIGNMENT  
FREQ (HZ)  
ASSIGNMENT  
FREQ (HZ)  
CODE NO.  
CODE NO.  
15 CHANNEL GMRS  
22 CHANNEL FRS/GMRS  
14 CHANNEL FRS  
FREQ (HZ)  
1
2
3
4
5
6
7
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
0
1
2
3
4
5
6
7
8
No Code  
67.0  
71.9  
74.4  
77.0  
79.7  
82.5  
85.4  
88.5  
91.5  
94.8  
97.4  
100.0  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
103.5  
107.2  
110.9  
114.8  
118.8  
123.0  
127.0  
131.8  
136.5  
141.3  
146.2  
151.4  
156.7  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
162.2  
167.9  
173.8  
179.9  
186.2  
192.8  
203.5  
210.7  
218.1  
225.7  
233.6  
241.8  
250.3  
9
CHANNEL NOT  
AVAILABLE  
10  
11  
12  
11  
8
12  
9
13  
10  
14  
15  
FRS / GMRS 22 CHANNEL CHART  
CHANNEL NOT  
AVAILABLE  
NO.  
FREQ (HZ)  
NO.  
FREQ (HZ)  
NO.  
FREQ (HZ)  
1
2
3
4
5
6
7
8
462.563  
462.588  
462.613  
462.638  
462.663  
462.688  
462.713  
467.563  
9
467.588  
467.613  
467.638  
467.663  
467.688  
467.713  
462.550  
462.575  
17  
18  
19  
20  
21  
22  
462.600  
462.625  
462.650  
462.675  
462.700  
462.725  
10  
11  
12  
13  
14  
15  
16  
20  
21  
 
LICENSING INFORMATION  
NAVIGATING MENU  
FRS (Family Radio Service) channels operation-none required.  
GMRS (General Mobile Radio Service) channels operation-requires operator  
MONITOR/  
SCAN  
SET  
MENU  
BACKLIGHT  
1-22 CH  
GMRS Licensing Eligibility: An individual 18 years of age or older, who is not a  
representative of a foreign government, is eligible to apply for a GMRS system  
license. Individual family members are all ages are subsequently eligible to operate  
GMRS stations and units within the licensed system.  
VOLUME  
UP/DOWN  
CHANNEL  
CTCSS  
VOX  
This device complies with Part 15 of the FCC rules. Operation is subject to the  
following two conditions: (1) this device may not cause harmful interference, and (2)  
this device must accept any interference received, including interference that mat  
cause undesired operation.  
CALL  
0-38 CODE  
1-4 LEVEL  
DW  
MONITOR/  
SCAN  
SERVICE  
KEY LOCK  
ON/OFF  
(U.S.) Should your unit require service, please contact the Nady Service Department  
via phone at (510) 652-2411 or E-mail at [email protected]  
B.SCAN  
Any installation or operating questions should be directed to our service department.  
Do not return the unit to the store before calling us. We can probably help you with  
one short phone call or E-mail.  
VOX  
CHANNEL  
CTCSS  
1-22 CH  
ON/OFF  
(International) For service or questions, please contact the Nady MRC-11X  
motorcycle accessories distributor in your country through the dealer from whom  
you purchased this product.  
PTT  
0-38 CODE  
POWER  
OFF  
RADIO  
INTERCOM  
CALL TONE SETTING  
TEST  
SET + SCAN  
SCREEN  
CALL  
1-6 TONE  
SET  
POWER  
OFF  
SET  
22  
23  
 
NADY SYSTEMS, INC.  
nady.com  
 

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