Junlan Electronic CABF2070 Waterproof Portable Speaker System User Manual 1
Shenzhen Junlan Electronic Ltd Waterproof Portable Speaker System 1
Users Manual

MODEL: MHT833
PLEASE READ BEFORE OPERATING THIS EQUIPMENT.
OWNER'S MANUAL
WATERPROOF
PORTABLE SPEAKER
SYSTEM 
with Decorative Color Changing Lights
and Bluetooth® Wireless Technology
Size: 148.5(W) x 210(H)mm (A5)

2
CAUTION:
THIS  DIGITAL  VIDEO  DISC  PLAYER  EMPLOYS A
LASER  SYSTEM.
TO   ENSURE   PROPER   USE   OF THIS  PRODUCT.
PLEASE READ THIS OWNER`S MANUAL CAREFULLY
AND  RETAIN  FOR  FUTURE  REFERENCE.  SHOULD 
THE  UNIT REQUIRE  MAINTENANCE,  CONT ACT AN
AUTHORIZED   SERVICE   LOCATION-SEE   SERVICE
PROCEDURE.
USE     CONTROLS, ADJUSTMENTS    OR THE
PERFORMANCE OF PROCEDURES OTHER THAN
THOSE   SPECIFIED   HEREIN   MAY   RESULT  IN
HAZARDOUS  RADIATION  EXPOSURE.
TO PREVENT DIRECT EXPOSURE TO LASER BEAM,
DO NOT TRY TO OPEN THE  ENCLOSURE. VISIBLE
LASER  RADIATION  MAY   BE PRESENT  WHEN THE
ENCLOSURE IS OPENED. DO NOT STARE INTO BEAM.
WARNING:
TO  REDUCE THE   RISK OF   FIRE OR   ELECTRIC
SHOCK, DO NOT EXPOSE THIS PRODUCT TO RAIN
OR MOISTURE.
WARNING:
TO   REDUCE THE   RISK  OF   FIRE OR   ELECTRIC
SHOCK, AND ANNOYING INTERFERENCE, USE THE
RECOMMENDED ACCESSORIES ONLY.
The lightning flash with arrowhead symbol
within an equilateral triangle is intended to alert
the user to the presence of uninsulated
dangerous voltage within the product`s
enclosure that may be of sufficient magnitude to
constitute a risk of electric shock to persons.
The exclamation point within an equilateral
triangle is intended to alert the user to the
presence of important operating and
literature accompanying the appliance.
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO  NOT
                   REMOVE COVER (OR BACK). NO USER-SERVICEABLE
                   PARTS   INSIDE.   REFER  SERVICING TO  QUALIFIED 
                   SERVICE PERSONNEL.
maintenance (servicing) instructions in the

3
Before using the unit, be sure to read all operating instructions carefully. Please note that these
are general precautions and may not pertain to your unit. 
1) Read these instructions.
   All the safety and operating instructions should be read before the product is operated.
2) Keep these instructions.
    The safety and operating instructions should be retained for future reference.
3) Heed all warnings.
   All warnings on the product and in the operating instructions should be adhered to.
4) Follow all instructions.
   All operating and use instructions should be followed.
5) Do not use this apparatus near water.
   Do not use this product near water and moisture, for example: near a bathtub, washbowl, kitchen
   sink or laundry tub; in a wet basement; or near a swimming pool.
6) Clean only with dry cloth.
   Unplug this product from the wall outlet before cleaning. Do not use liquid cleaners or aerosol
   cleaners. Use a dry cloth for cleaning.
7) Do not block any ventilation openings. Install in accordance with the manufacturer's
   instructions.
   Slots and openings in the cabinet and in the back or bottom are provided for ventilation, to ensure
   reliable operation of the product and to protect it from overheating. These openings must not be
   blocked or covered. The openings should never be blocked by placing the product on a bed, sofa,
   rug or other similar surface. This product should never be placed near or over a radiator or heat
   source. This product should not be placed in a built-in installation such as a bookcase or rack
   unless proper ventilation is provided or the manufacturer's instructions have been adhered to.
8) Do not install near any heat sources such as radiators, heat registers, stoves, or other
   apparatus(including amplifiers) that produce heat.
9) Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug
   has two blades with one wider than the other. A grounding type plug has two blades and a
   third grounding prong. The wide blade or the third prong are provided for your safety. If the
    provided plug does not fit into your outlet, consult an electrician for replacement of the
    obsolete  outlet .
10)Protect the power cord from being walked on or pinched particularly at plugs, convenience
    receptacles, and the point where they exit from the apparatus.
11)Only use attachments/accessories specified by the manufacturer.
12)Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold
   with the apparatus. When a cart is used, use caution when moving the cart/apparatus
   combination to avoid injury from tip-over.
   An appliance and cart combination should be moved with care.
   Quick stop, excessive force and uneven surfaces may cause the
   appliance and cart combination to overturn.
13) Unplug this apparatus during lightning storms or when unused for long periods of time.
    To protect your product from a lightning storm, or when it is left unattended and unused for long
    periods of time, unplug it from the wall outlet and disconnect the antenna or cable system. This
    will prevent damage to the product due to lightning and power-line surges.
14) Refer all servicing to qualified service personnel. Servicing is required when the apparatus
    has been damaged in any way, such as power-supply cord or plug is damaged, liquid has
    been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain
    or moisture does not operate normally, or has been dropped.
15) Power source
This product should be operated only from the type of power source indicated on the marking label.
If you are not sure of the type of power supply to your home, consult your appliance dealer or local
power company. For products intended to operate from battery power, or other source, refer to the
operation instructions.
16) Power lines 
An outside antenna system should not be located in the vicinity of overhead power lines or other
electric light or power circuits, or where it can fall into such power lines or circuits. When
installing an outside antenna system, extreme care should be taken to keep from touching such
power lines or circuits as contact with them might be fatal.
For  example,  this  unit  may  not  have  the  capability  to  be  connected  to  an  outdoor  antenna.
Portable Cart Warning

4
17) Overloading
Do not overload wall outlets and extension cords as this can result in a risk of fire or electric shock.
18) Object and liquid entry
Never push objects of any kind into the product through openings as they may touch dangerous
voltage points or short out parts that could result in fire or electric shock. Never spill or spray any
type of liquid on the product.
19) Outdoor antenna grounding
If an outside antenna is connected to the product,be sure the antenna system is grounded so as to
Provide some protection against voltage surges and built up static charges.Section 810 of the
National Electric Code ANSI/NFPA 70 provides information with respect to proper to grounding
of the mast and supporting structure, grounding of the lead-in wire to an antenna discharge product,
size of grounding conductors,location of antenna-discharge product,connection to grounding
electrodes and requirements for the grounding electrodes.
Do not attempt to service this product yourself as opening or removing covers may expose you to
dangerous voltage or other hazards.Refer all servicing to qualified service personnel.
When replacement parts are required,be sure the service technician uses replacement parts
specified by the manufacturer or those that have the same characteristics as the original parts.
Unauthorized substitutions may result in fire or electric shock or other hazards.
Upon completion of any service or repairs to this product,ask the service technician to perform
safety checks to determine that the product is in proper operational condition.
The product should be mounted to a wall or ceiling only as recommended by the manufacturer.
Unplug this product from the wall outlet and refer service to qualified service personnel under the
following conditions.
a)When the power-supply cord or plug is damaged.
b)If liquid has been spilled or objects have fallen into the product.
c)If the product has been exposed to rain or water.
d)If the product does not operate normally by following the operating instructions.Adjust only
those controls that are covered by the operating instructions,as an adjustment of other
controls may result in damage and will and require extensive work by a qualified technician
to restore in the product to its normal operation.
e)If the product has been dropped or the cabinet has been damaged.
f)When the product exhibits a distinct change in performance-this indicates a need for service.
This reminder is provided to call the CATV system installer's attention to Article 820-40 of the
NEC that provides guidelines for proper grounding and,in particular,specifies that the cable
ground shall be connected to the grounding system of the building,as close to the point of cable
entry as practical.
NOTE: Refer all servicing to qualified service personnel Servicing is required when
the unit has been damaged in any way such as the following: the power-supply cord
or plug has been damaged, liquid has been spilled into unit, the unit has been
exposed to rain or moisture, the unit has been dropped or the unit does not operate normally.
25) Note to CATV system installer
24) Damage requiring service
23) Wall or ceiling mounting
22) Safety check
21) Replacement parts
20) Service

TO DC IN JACK
To Wall Outlet
Notes: 
POWER SOURCE
SIDE PANEL
MI C GT
US B 
PO WE R
ON O FF
5
The unit has a built in Sealed Lead Acid rechargeable battery, recharge it before use or when it is drained as follows:
1A  OUT
DC  IN
2.Connect the small plug from the supplied AC/DC Adaptor to the DC IN Jack on the right of unit as the illustrated below.
3.Plug the AC/DC Adaptor to the AC wall outlet having AC 100-240V~, 50/60Hz as illustrated below.
5.During charging, you can also play and listening music at the same time.
1.Make sure the unit is in Standby or Power on mode. Otherwise, press the POWER ON-OFF Switch to ON position to 
power on the unit to standby mode. 
4.During charging, the Indicators on the Battery Meter will illuminate and blink to show the charging status. When finished
 charging, all indicators on it will illuminate and stop blinking. 
Your battery will last longer if you're following these simple guidelines for charging and storing.
A. Before first time use, charge it approximately 10 hours until the unit is fully charged.
B. Recharge and store the unit within the temperature range of 5°C~35°C (40°F~95°F).
D. Battery life naturally shortens slowly over time.
E. The rechargeable battery incorporated in this product is not user replaceable.
F. If long period of time will not use, unplug the Adapter from wall outlet.
C. Do not charge longer than 24 hours. Excessive charging or running the unit until the battery fully drains will 
damage battery. Battery life will be extended if you keep the battery fully charged.

3. GT VOLUME (Guitar Volume) Control Knob
1. MIC VOLUME (Microphone Volume) Control Knob
2. MIC ECHO (Microphone Echo) Control Knob
9. BATTERY METER Button
12. VOLUME Knob
5. POWER Indicator 
10.        Button    
4.      (Play/Pause) Button
14.        Button 
13. LIGHT Button
22. AUX IN Jack
24. POWER ON-OFF Switch
23. DC IN Jack ( DC          15V, 2A,              )
15. Retractable Handle
PO WER
010
MIC VOLUME
010
MI C ECH O
010
GT VOLUME
VO LUM E
LI GHT
MO DE
MIC G T
USB 
POW ER
ON OF F
1
2 3 4 5 6
7 9 10 11 12 13
15
24
18 19
20 21
23
TOP PANEL
FRONT VIEW SIDE PANEL
22
19. GT (Guitar Input) Jack
20. USB Port
21. 1A OUT (USB charging) Jack
18. MIC (Microphone Input) Jack
11. M (Memory) Button    
6. MODE/    (Mode selection/Power) Button    
7. LED Display  
16
17
16. Decorative LED Lights
17. Wheels
6
1A  OUT
DC  IN
8
8. Indicators of Battery Meter
14

 General Operation:
OPERATIONS:
7
1.
Recharged the built in
battery as previously instructed.
2.
Press the Power ON/OFF Switch to ON position on the right of unit to turn
the unit to standby mode.
The POWER Indicator on the top of unit will illuminate.
3.
Press and hold the /MODE Button on the top of unit approximated 1
second until “ON” appear on the LED
Display to turn on the unit from standby mode. The LED Display will illuminate.
4.
Press the /MODE Button repeatedly to switch to desired playback mode.
The correspondent indicator will
appear on the display with your selection (see list below):
Playback Mode: Indicators:
BT (Bluetooth) “bt” will appear on the display
USB (If USB Device inserted) “USb” will appear on display
Radio FM Band Radio frequency “XX.X” or “XXX.X”
will appear on the display
A
UX IN “AUX” will appear on the display
5.
During playback,
A. Turn the Volume Control Knob on the top of unit to adjust volume
level as desired.
B. Press the LIGHT Button repeatedly to
change the blinking mode of
the Decorative
LED Lights
C. Press the BATTERY METER
to read the power of the built-in battery.
6.
When finished listening, press the /MODE Button to turn the unit to
Standby Mode.
7.
If you will not use the unit for an extended period of time, power off the unit
by press the Power ON/OFF
Switch to OFF position. The POWER Indicator will not light.
IMPORTANT:
The unit is for Water and Dusts Ingress Protective; always make sure all the covers were completely
closed tightly and firmly.
ON/OFF
turn
o
r
.
B
u
t
t
o
n

BT (Bluetooth) pairing:
3.  If pairing is complete you may now play music and answer calls with your external BT Device.
●  Press the       Button on the unit to pause, press again to resume normal playback. 
●  Press the       or      Buttons repeatedly to skip tracks.
Normal operation after pairing:
3.  After pairing is complete you may now play music with your external BT Device.
8
1.  Power on the unit and enter to BT mode as previously instructed. “bt” will appear on the display 
and blink. 
2.  Power on the external BT Device and enter to BT searching mode. Start pairing following the 
on screen instructions from the external BT Device. After paired, the “bt” Indicator on the display 
will stop blinking.
4.  During playback:
Notes:
●  
●  If while pairing you are asked for a code please try “ 0000 ” or “ 1234 ”. 
When the external BT Device searched the unit, our model number “ MM833 ” will appear 
on the display of external BT Device.
1.  Power on the unit and enter to BT mode as previously instructed. “ bt ” will appear on the display
and blink. 
2.  Wait a few seconds until the unit is automatically paired to the external BT Device. The "
BT MODE:
First time use or re-pairing the unit to a new BT Device, pair as follows:
“ bt ” indicator
 on the display will stop blinking.

AUX IN:
1. Insert one of the plug from the Audio connection cable with 3.5mm stereo mini plugs to the Phone
   Jack; Line Out Jack or AUX Out Jack on external audio device such like the iPhones; iPad; iPod;
   MP3 Player; Discman … etc.
2. Insert the other plug to the AUX IN Jack as the figure below:
3. Power on the unit as previously procedures.
4. Press the MODE/     Button repeatedly until the  AUX  appears on display.
5. Plays the music in the connected external Audio device as usual. (Make sure the volume level of 
   the external device in high level. Otherwise, sound from this unit is weak).
FM Antenna:
The unit had a built-in FM antenna. If reception is weak; turn or relocate the unit to improve the 
 radio reception.
FM (Radio):
1. Power on the unit as previous procedures.
 In first time use (or replaced the unit in a new location), press and hold the           Button to search
2. Press the MODE/     Button on top of the unit repeatedly until the   FM frequency   appears on display. 
repeatedly to select and play the desired stored FM station.
and store the available FM station automatically. After searching and storage, press the 
Store the FM station automatically:
Store the FM station manually:
3. Press the         or        Button to search and play the desired station manually.
or press and hold the         or        Button to search the available station, when a station searched, the
unit will stop seraching and play the station.
Search and play the FM station:
Press the         or         Button to search the available desired station, then press the 
       Button to select the storage location, press the       Button again to confirm storage. 
Repeat the above operations to store up to 20 stations.
"       "
MI C GT
US B 
PO WER
ON O FF
Mobile Phone
Connect to the Phones; AUX Out;
 (Such like MP3 Player; cell phones; 
 iPod/iPad ... etc)
MP3 Player
Line Out Jack of the 
external devices
SIDE FUNCTION PANEL
Audio connection cable NOT included
"                       "
9
Button
Button
 on top of the unit, CHXX will appear on display (here XX stand for 01 to 20), press the         or
1A  OUT
DC  IN

Microphone:
2. Power on the unit and play the music as usual.
3. Slide the ON/OFF Switch on the Microphone to ON position to turn on the Microphone.
4. Turn the MIC Volume (Microphone Volume) Knob on the top of unit to adjust the sound level from 
    connected microphone.
   NOTE: If feedback noise (high audio frequency noise) is hearing from the speakers, turn the 
   MIC Volume (Microphone Volume) Knob counterclockwise to reduce the microphone volume  
   level or keep the Microphone away from the speakers.
5. Turn the MIC ECHO (Microphone ECHO) Knob on the top of unit to adjust the effect of echo as desired.
6. When finished, slide the ON/OFF Switch on the Microphone to OFF position to shut off the 
    Microphone. And/or unplug the Microphone from the unit.
Guitar (Electric):
as the figure below:
2. Power on the unit as usual.
3. Turn the GT Volume (Guitar Volume) Knob on the top of unit to adjust the sound level from
    connected guitar.
    NOTE: If feedback noise (high audio frequency noise) is hearing from the speakers, turn the 
                GT Volume (Guitar Volume) Knob counterclockwise to reduce the volume level or 
                 keep the guitar away from the speakers.
4. When finished, unplug the guitar from the unit.
Dynamic Microphone Included
Electric Guitar (not supplied)
MI C GT
US B 
PO WE R
ON O FF
1.Connect the supplied Microphone to the MIC Jack as the figure below: 
MI C GT
US B 
PO WE R
ON O FF
1.Connect the connection plug from the Electric Guitar
to the GT (guitar input) Jack 
SIDE FUNCTION PANEL
SIDE FUNCTION PANEL
10
1A  OUT
DC  IN
1A  OUT
DC  IN

USB:
2. Power on the unit and play the music as usual.
USB Device NOT Included
MI C GT
US B 
PO WE R
ON O FF
1. Insert the USB Device into the USB port  as the figure below: 
USB
3. Press the MODE/     Button on top of the unit repeatedly until the   USb  appears on display. 
"       "
4. The unit will play the music in the connected USB device automatically. (Make sure the volume level of 
   the external device in high level. Otherwise, sound from this unit is weak).
5. During playback:
●  Press the       Button to pause; press and release again to resume normal playback.
●  Press the        or        Button to skip tracks.
●  Press and hold the        or        Button to fast backward or fast forward.
6. When finished, unplug the USB device.
 NOTE: When the USB device inserted, USB mode will be selected automatically.
SIDE PANEL
USB CHARGING:
11
To charging the external USD Device:
1. Make sure the unit is in power on or standby mode.
2. Connect the full size USB Plug from the external USB Device to the 1A
USB Port on the right on unit.
3. The charging will auto start.
4. When finished charge, disconnect the external USB Device from the 1A
USB Port.
Notes:
A. Before charge the external USB Device, check the power of the built-in
battery. If the power of the battery
is too low, it cannot be charge the External USB Device.
B. The unit has a built-in overload/overheats protector. If the output of the
unit is overload (or short circuit).
The charger will auto shut off. Unplug the external USB Device from the 1A USB Port.
The charge will auto reset.
1A  OUT
DC  IN

TROUBLESHOOTING GUIDE
Check the follows before requesting service:
SYMPTOM POSSIBLE CAUSE  
No power Power Switch is in OFF
position
Press the POWER ON-OFF Switch
on the right of unit to ON position
No Sound Volume in minimum position
Rise volume level by turning 
th clockwise
e
The
is not in playback mode
Rise the volume level of the
connected /paired device
Play mode incorrect
Sound distortion Volume level too high
BT not function The external BT device too
far from the unit
POSSIBLE SOULTION
 VOLUME Control Knob
Built-in battery cannot 
be recharge.
The unit is not powered on 
Built-in rechargable battery 
drained
Recharge the built-in battery 
Place the external BT device close 
to the unit
Reduce the volume and/or bass level
of the connected /paired device
Volume level of the connected
/paired device too high
Reduce the volume level by turning 
the VOLUME Control Knob 
counterclockwise
Press the MODE/ 
play mode as the connection
Plays the audio/video files in the
connected/paired device as usual
Retractable Handle:
Press the button on the top of the handle to release the lock then pull it out or
Button 
repeatedly to set or reset the 
12
back as the illustrated figure 
below:
connected/paired device 
or standby mode
Press the POWER ON-OFF Switch to
ON position, or put the unit to standby 
mode
Sound output of the
connected /paired device

Power Source:....….........................…...............Built-in rechargeable DC      12V, 4000mAh 
BT Version: …………………...............................................................................................................2.1
13
General Specifications:
Accessories:
1 x User’s Manual
1 x AC/DC Adapter
1 x Microphone
SPECIFICATIONS AND ACCESSORIES ARE SUBJECT TO CHANGE WITHOUT NOTICE
Radio FM Band Coverage: ………………….....................................……...........................87.5-108MHz
BT Effective Range: …………………………..................................................Up to 32 Feet in open area
Audio Power: …………………………………………….................................................…..……........20W
Cleaning:
1. To prevent fire or shock hazard, disconnect your unit from the AC/DC Adapter when cleaning.
2. The finish on your unit may be cleaned with a dust cloth and cared for as other furniture. 
    Use caution when cleaning and wiping the plastic parts.
3. Mild soap and a damp cloth may be used.
Impedance of Speakers:
Loud Speaker………………….................................................................... 4 Ohms, 35W x 1 
Water and Dust Ingress Protection Level:....…..........................................................................…...IP44
(39.6 WH)
 Sealed Lead Acid battery; (Recharge by DC       15V, 2A)
Tweeter.........…………………..................................................................... 8 Ohms, 12W x 1
Input: AC 100-240~; 50/60Hz; 0.8A Max.
Output: DC       15V, 2A

Craig warrants this product to be free from manufacturing defects in material and
workmanship under normal use for a period of 180 days from date of purchase. If service
is required, please return the product to the store where it was purchased for exchange;
or, pack the unit in the original packing material with all accessories if applicable, a copy
of your sales receipt and a Cashier’s check or Money Order for $20 (to cover shipping
and handling costs) payable to Craig Electronics Inc. For consumers in Canada, please
make sure that the cashier check or money order is redeemable through a U.S. bank.
Ship your product freight pre-paid. Your unit will be repaired, replaced or if the unit can
not be repaired or replaced, a refund will be forwarded to you within four weeks of receipt
of your unit. Please ship your unit to:
Craig Electronics Inc.
1160 NW 163 Drive
Miami, Fl 33169
This warranty is void if the product has been: a) Used in a commercial application or 
rental. b) Damaged through misuse, negligence, or abuse. c) Modified or repaired by 
anyone other than an authorized Craig service center. d) Damaged because it is 
improperly connected to any other equipment.
Note: This warranty does not cover: a) Ordinary adjustments as outlined in the Owner’s 
Manual which can be performed by the customer. b) Damage to equipment not properly 
connected to the product. c) Any cost incurred in shipping the product for repair. d) 
Damage to the product not used in the USA.
This warranty is not transferable and only applies to the original purchase. Any implied 
warranties, including the warranty of merchantability, are limited in duration to the period 
of this expressed warranty and no warranty whether expressed or implied shall apply to 
the product thereafter.
Under no circumstance shall Craig be liable for any loss or consequential damage arising 
out of the use of this product. This warranty gives specific legal rights. However, you may 
have other rights which may vary from state to state. Some states do not allow limitations 
on implied warranties or exclusion of consequential damage. Therefore, these 
restrictions may not apply to you.
This product has been manufactured by and is sold under the responsibility of Craig 
Electronics Inc, and Craig Electronics Inc  is the warrantor in relation to this product. 
MAGNAVOX and SMART. VERY SMART are registered trademarks of Koninklijke Philips 
N.V. and are used under license from Koninklijke Philips N.V.
To Obtain Service on your Product
email:service@craigelectronics.com
Printed in China  MHT833_WC_E0CL1_B0WU
LIMITED WARRANTY

FCC NOTICE:
This equipment has been tested and found to comply with the limits for a Class
B digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and
on, the user is encouraged to try to correct the interference by one or more of
the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
FCC STATEMENT:
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 may cause undesired operation.
FCC WARNING:
To assure continued operation, follow the attached installation instructions and
use only shield cables when connecting to other devices. Changes or
modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate the equipment.
FCC Radiation Exposure Statement:  
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment .
This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.