Memorex Two Way Radio MK1800 User Manual

MK1800 O/M.QXD 9/10/01 7:43 AM Page 12  
14 CHANNEL FRS BASE STATION  
MODEL: MK1800  
BEFORE OPERATING THIS PRODUCT,  
PLEASE READ THESE INSTRUCTIONS COMPLETELY.  
OPERATING INSTRUCTIONS  
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MK1800 O/M.QXD 9/10/01 7:43 AM Page 2  
SAFETY PRECAUTIONS (CONTINUED)  
FCC WARNINGS:  
This device complies with part 15 of the FCC rules. Operation is  
subject to the condition that this device does not cause harmful  
interference.  
PRECAUTIONS:  
• Do not modify or attempt to adjust the transceiver for any reason.  
• Avoid extremes in exposure to water, heat and cold.  
• Do not expose the transceiver to long periods of direct  
sunlight, nor should the transceiver be placed close to  
heating appliances.  
• Do not place the transceiver in excessively dusty areas,  
humid areas, wet areas, or on unstable surfaces.  
• If smoke is coming from the transceiver, immediately turn off  
the power and remove the batteries or unplug the unit.  
Contact your dealer.  
2
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MK1800 O/M.QXD 9/10/01 7:43 AM Page 3  
LOCATION OF CONTROLS  
1
2
3 4  
5
6
7
8 9 101112 13 14 15  
16  
1. Antenna  
2. CHANNEL/VOLUME  
Up/Down Buttons  
11. MIC (Microphone)  
12. AUTO Button  
13. MONITOR Button  
3. Transmit Indicator  
4. Display  
14. Power/VOX Indicator  
15. ENTER/LOCK Button  
5. Battery Compartment  
(Bottom of Unit)  
6. POWER Button  
7. MIC/EARPHONE Jack  
(Side of Unit)  
+
16. DC6V Jack  
of Unit)  
(Side  
8. MENU Button  
9. TALK Button  
10. CALL Button  
3
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MK1800 O/M.QXD 9/10/01 7:43 AM Page 4  
POWER SOURCES  
BATTERY INSTALLATION  
Open the battery compartment and insert four (4) "AA" size  
batteries (not included) following the polarity diagram. Put the  
battery compartment cover back into place. When the battery is  
low, the display will show “L” and blink.  
+
+
+
+
BATTERY PRECAUTIONS  
Follow these precautions when using batteries in this device:  
1. Use only the size and type of batteries specified.  
2. Be sure to follow the correct polarity when installing the batteries as indicated in the  
battery compartment. Reversed batteries may cause damage to the device.  
3. Do not mix different types of batteries together (e.g. Alkaline and Carbon-zinc) or  
old batteries with fresh ones.  
4. If the device is not to be used for a long period of time, remove the batteries to prevent  
damage or injury from possible battery leakage.  
5. Do not try to recharge batteries not intended to be recharged; they can overheat and  
rupture. (Follow battery manufacturer’s directions.)  
+
DC JACK  
To use this unit with the provided AC adapter having 6V and a  
positive center pin, insert the AC  
adapter’s plug into the DC6V jack  
on the unit and the other end into  
an AC outlet. The batteries will be  
AC Outlet  
disconnected when the AC adapter  
is connected.  
AC Adapter's Plug  
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MK1800 O/M.QXD 9/10/01 7:43 AM Page 5  
OPERATION  
TO TURN THE UNIT ON/OFF  
ANTENNA  
1
1
ON: Press and hold the POWER  
button for 1 second; the unit will  
beep and the Power/VOX  
indicator will light green.  
SIDE OF UNIT  
OFF: Press and hold the POWER  
button for 1 second; the unit will  
beep and the Power/VOX  
indicator will turn off.  
For best results, rotate the  
antenna angle to 90° to 180° as  
shown in the figure above.  
If there are no transmissions for 2 seconds, the unit will automatically switch  
to standby mode (display will turn off), which will save batteries (if used).  
When a transmission is received or if you attempt to send a transmission,  
the display will turn back on.  
TO ADJUST THE VOLUME  
TO SELECT A CHANNEL  
1
1
1
3
2
2
To select a channel, press the  
MENU button once and the  
display will blink. Within 7 seconds,  
press the CHANNEL/ VOLUME Up  
or Down buttonuntil the desired  
channel (1 to 14) appears in the  
display. Press the ENTER/LOCK  
button when done.  
To adjust the volume, press the  
CHANNEL/VOLUME Up or Down  
button until the desired level (1 to  
16) appears in the display.  
5
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MK1800 O/M.QXD 9/10/01 7:43 AM Page 6  
OPERATION (CONTINUED)  
TO SET THE BEEP  
TO TRANSMIT  
1
1
1
3
2
2
This option will determine whether To transmit, press and hold the  
or not a beep is heard after each TALK button and speak into the  
button press. Press the MENU built-in microphone (or the external  
button twice and the display will microphone, if connected). When  
the TALK button is pressed, the  
Transmit indicator will light and the  
speaker will be muted. When the  
TALK button is released, the  
listener will hear a beep to confirm  
you are done speaking.  
either show “b” or “-”. Within 7  
seconds, press the CHANNEL/  
VOLUME Up or Down button to  
turn the beep on (“b” will appear in  
the display), or off (“-” will appear).  
Press the ENTER/LOCK button ❸  
when done.  
TO MONITOR  
TO SEND A CALL TONE  
1
1
This function will unmute the This function will send  
a
speaker/disable Auto Squelch as distinctive tone to users who are  
long as it is pressed. This is useful tuned to the same channel as  
to hear signals that are too weak your unit. The users you are  
to be recognized or to adjust the trying to reach will recognize your  
volume to background noise. To distinctive call tone. To send a call  
monitor, simply press and hold the tone, simply press the CALL  
MONITOR button.  
button once.  
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MK1800 O/M.QXD 9/10/01 7:43 AM Page 7  
OPERATION (CONTINUED)  
TO LOCK CONTROL KEYS  
LISTENING TO TRANSMISSIONS  
1
1
2
3
1
1
This function will lock the  
CHANNEL/VOLUME Up/Down ❶  
and the MENU buttons.  
When the unit is on, it will  
automatically broadcast the  
incoming signal when a strong  
incoming signal is received on the  
selected channel.  
To activate, press and hold the  
ENTER/LOCK button  
for  
2
seconds; the unit will beep and “L”  
will briefly appear in the display.  
To deactivate, press and hold the  
ENTER/LOCK button  
for  
2
seconds; the unit will beep and “–”  
will briefly appear in the display.  
AUTO SQUELCH  
VOX (VOICE ACTIVATION)  
1
1
Voice activation will allow you to  
listen/transmit while freeing your hands  
for other tasks. Press the AUTO button;  
the Power/VOX indicator will light red.  
Then whenever the unit detects a  
sound or voice, it will automatically  
transmit. To shut this function off, press  
the AUTO button again; the  
Power/VOX indicator will light green.  
This unit is equipped with Auto  
Squelch, which will automatically  
mute weak transmissions and  
unwanted noise. Auto Squelch  
can be temporarily turned off  
using the MONITOR button (see  
TO MONITOR section on the  
previous page.)  
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MK1800 O/M.QXD 9/10/01 7:43 AM Page 8  
OPERATION (CONTINUED)  
CONNECTING EARPHONE/HEADPHONES:  
For private listening, you can connect an earphone or  
headphones with a 1/8-inch plug to the MIC/EARPHONE jack  
on the side of the unit. This automatically disconnects the  
internal speaker. Adjust to a desired volume level, but do not  
adjust the volume too high to avoid damage to your hearing.  
CONNECTING A MICROPHONE:  
Connect a microphone with a 1/8-inch plug to the MIC/  
EARPHONE jack on the side of the unit. This automatically  
disconnects the internal microphone.  
FREQUENCY RANGE:  
FRS CHANNEL  
CHANNEL FREQUENCY (MHZ)  
462.5625  
1
2
462.5875  
3
462.6125  
4
462.6375  
5
462.6625  
6
462.6875  
7
462.7125  
8
467.5625  
9
467.5875  
10  
11  
12  
13  
14  
467.6125  
467.6375  
467.6625  
467.6875  
467.7125  
8
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MK1800 O/M.QXD 9/10/01 7:43 AM Page 9  
SPECIFICATIONS  
FREQUENCY:  
Frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 462 ~ 467 MHz  
RECEIVER:  
Sensitivity (12 db signal). . . . . . . . . . . . . . . . . . . . . . . . 0.25 uV  
Max audio output @10THD . . . . . . . . . . . . . . . . . . . . . 300 mW  
Max S/N ratio @ 1mV RF input . . . . . . . . . . . . . . . . . . . . 40 dB  
Squelch sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.2 uV  
Audio frequency response (300Hz/3000Hz) . . . . . . . . . ±10 dB  
Signal displacement BW . . . . . . . . . . . . . . . . . . . . . . . . ± 5 Hz  
Adjacent channel rejection. . . . . . . . . . . . . . . . . . . . . . . . 50 dB  
Intermodulation rejection . . . . . . . . . . . . . . . . . . . . . . . . . 50 dB  
Spurious response rejection . . . . . . . . . . . . . . . . . . . . . . 50 dB  
TRANSMITTER:  
Effective radiated power . . . . . . . . . . . . . . . . . . . . . . . 300 mW  
Carrier frequency stability . . . . . . . . . . . . . . . . . . . . . . . ±1 KHz  
Modulation limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5 KHz  
Carrier attack time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 mS  
Audio frequency response (300Hz/3000Hz) . . . . . . . . . ±10 dB  
Audio distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3%  
Hum and noise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 dB  
POWER SUPPLY  
Battery life ( 1:1:8 Ratio ). . . . . . . . . . . . . . . . . . . . . . . . . 30 hrs  
Batteries (4 X 1.5V “AA” . . . . . . . . . . . . . . . . . . . . . . 4.8 – 6.0V  
Specifications are subject to change without notice.  
9
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MK1800 O/M.QXD 9/10/01 7:43 AM Page 10  
FOR ADDITIONAL SET-UP OR OPERATING ASSISTANCE,  
PLEASE VISIT OUR WEBSITE AT  
WWW.MEMCORPINC.COM  
OR CONTACT CUSTOMER SERVICE AT 1-800-919-3647  
PLEASE KEEP ALL PACKAGING MATERIAL FOR AT  
LEAST 90 DAYS IN CASE YOU NEED TO RETURN THIS  
PRODUCT TO YOUR PLACE OF PURCHASE OR  
MEMOREX.  
FOR PARTS AND ACCESSORIES, CONTACT FOX INT’L  
AT 1-800-321-6993.  
10  
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MK1800 O/M.QXD 9/10/01 7:43 AM Page 11  
Memcorp, Inc.  
Weston, FL  
Printed in Hong Kong  
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