Listen Technologies Stereo System LA 140 User Manual

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Dear Valued Customer,  
Thank you for choosing Listen! All of us at Listen are dedicated to  
providing you with the highest quality products available. We take  
great pride in their outstanding performance because we care  
that you are completely satisfied. That’s why we independently  
certify them to the highest quality standards and back them with  
a limited lifetime guarantee. We stand ready to answer any  
questions you might have during installation or in the operation of  
our products. Should you experience any problems whatsoever  
with your Listen products, we are ready to help you in any way we  
can with prompt, efficient customer care. Because at Listen, it’s  
all about you! And should you have any comments on how we  
might improve our products or our service, we’re here to listen.  
801.233.8992  
800.330.0891  
801.233.8995  
North America  
fax  
Thank you... and enjoy your listening experience!  
Best regards,  
The Listen Team  
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LA-107 Package Contents  
LA-107 Contents  
1
2
Antenna base assembly  
Three ground radials  
Mounting Hardware  
3
4
50 ft. (3 m) RG 58 coaxial cable with  
PL-259 and LA-127 connectors  
Extra LA-127 connectors  
User Manual (not shown)  
5
6
3
5
1
2
2
2
4
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Table of Contents  
Specifications  
Installation  
Mounting  
Shortening Coaxial Cable  
Supplementary Information  
Warranty  
3
4
5
6
7
7
8
Contacting Listen  
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LA-107 Specifications  
Specifications  
Specification  
Frequency Range  
LA-107  
216.0125 - 216.9875 MHz  
216.5 MHz  
¼ Wave, Ground Plane  
0 db (unity)  
Center Frequency  
Antenna Type  
Unity Gain  
Beam Width  
Mounting  
360º  
Mast bracket up to 1.50 in. (4.0 cm) diameter  
Size  
13.50 in. (34.0 cm) base with 13.50 in. (34.0 cm) ground radials  
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Installation  
1
2
3
4
Screw ground radials into antenna base assembly and secure with  
tightening nuts.  
Mount your antenna in a strategic location. See “Mounting Your  
LA-107” on the following page.  
Connect the PL-259 end of coaxial cable to the base  
of the antenna  
Run coaxial cable to the LT-800 transmitter and connect the  
LA-127 to the Auxiliary Antenna connection on the back of the  
unit. Additional coaxial cable is available from Listen if you need  
a length longer than the included 50 feet (15.24 m).  
5
Listen recommends using RG8 cable for cable runs  
greater than 50 feet (15.24 m).  
LA-107 shown with coaxial  
connection to the LT-800  
Stationary Transmitter  
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Mounting Your LA-107  
Mount the antenna in a strategic location. Your antenna may be placed either  
indoors or outdoors. If mounted outside, the highest elevation should not exceed  
100 feet (30.5 m). The antenna should be placed in a location that will provide  
the best line of sight to the receivers. Keep in mind that the higher you have the  
LA-107 mounted, the more range you will get out of your receivers.  
The LA-107 includes a bracket that allows it to be mast  
mounted (vertical pole) up to 1.5 inches (4 cm) in diameter.  
This pole can be made of metal or plastic. However, if using  
a metal mast, the LA-107 should be isolated from the ground.  
It is very important that your mast does not extend above the  
mast end  
antenna radiator. This will create interference and multi-path  
to the receiver.  
mast  
Mount LA-107 away from power lines, telephone lines and  
metal surfaces.  
For maximum range, your transmitter should be set to “High”  
RF power.  
Run the coaxial cable from the antenna to your device,  
keeping the cable length as short as possible (see page 4,  
Shortening the Coaxial Cable if necessary). To optimize the  
efficiency of the LA-107, or to extend the length of your cable  
run, RG-8 can be used in place of RG-58.  
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Shortening the Coaxial Cable (optional)  
The coaxial cable from the LT-800 to the antenna  
should be kept as short as possible. Listen has  
included an extra LA-127 BNC connection to install  
if the length can be shortened.  
1
Cut Coaxial cable to desired length leaving  
PL-259 connection.  
2
Strip back cable jacket 0.6 inches (15 mm).  
Strip back cable braid 0.25 inches (6.4 mm).  
Strip back cable dielectric 0.15 inches (4 mm).  
Slide outer ferrule onto cable.  
3
4
5
6
Slide male contact on cable center conductor so that it  
butts against dielectric.  
Crimp male contact in place using crimp tool. Do not  
7
overcrimp.  
8
Fold braid back to allow the plug body assembly to slide  
under braid.  
9
Push plug body on cable until center pin is flush with end  
of plug body.  
10  
Slide outer ferrule over the braid and up against  
LA-127 Connection  
PL259 Connection  
connector body.  
11  
12  
Crimp outer ferrule using crimp tool.  
Check continuity of cable center conductor and sleeve to verify proper installation.  
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Warranty  
Warranty  
Listen Technologies Corporation (Listen) warrants its transmitters and receivers (LT-82, LT-700, LT-800, LR-100,  
LR-42, LR-44, LR-300, LR-400, LR-500, LR-600) to be free from defects in workmanship and material under normal  
use and conditions for the useful lifetime of the product from date of purchase.  
Listen warrants its Stationary IR Radiators (LA-140) to be free from defects in workmanship and material under  
normal use and conditions for three years from the date of purchase.  
Listen warrants its Noise Canceling Microphone (LA-270) to be free from defects in workmanship and material  
under normal use and conditions for one year from date of purchase.  
All other products and accessories are warranted for 90 days from date of purchase.  
This warranty is only available to the original end purchaser of the product and cannot be transferred.  
Warranty is only valid if warranty card has been returned within 90 days of purchase. This warranty is void if  
damage occurred because of misuse or if the product has been repaired or modified by anyone other than  
a factory authorized service technician. Warranty does not cover normal wear and tear on the product or  
any other physical damage unless the damage was the result of a manufacturing defect. Listen is not liable  
for consequential damages due to any failure of equipment to perform as intended. Listen shall bear no  
responsibility or obligation with respect to the manner of use of any equipment sold by it. Listen specifically  
disclaims and negates any warranty of merchantability or fitness of use of such equipment including, without  
limitation, any warranty that the use of such equipment for any purpose will comply with applicable laws and  
regulations. The terms of the warranty are governed by the laws of the state of Utah.  
In the first ninety days after purchase, any defective product will be replaced with a new unit. After ninety  
days, Listen will, at its own discretion either repair or replace transmitters and receivers with a new unit or a unit  
of similar type and condition. Product that is not covered under warranty shall be repaired or replaced with a  
unit of similar type and condition based on a flat fee. Contact Listen for details.  
This limited warranty, prices and the specifications of products are subject to change without notice.  
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Contacting Listen  
Contacting Listen  
If technical service is needed, please contact Listen. Pre-authorization is required before returning  
Listen products. If products were damaged in shipment, please contact the carrier, then contact  
Listen for replacement or repair requirements payable by the carrier.  
Listen’s corporate headquarters are located in Salt Lake City, Utah U.S.A. and are open Monday  
through Friday, 8am to 5pm Mountain Time.  
14912 Heritagecrest Way  
Salt Lake City, Utah 84065-4818  
801.233.8992  
North America  
800.330.0891  
801.233.8995  
fax  
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Listen Technologies Corporation  
1ꢁ912 Heritagecrest Way  
Salt Lake City, Utah ꢅꢁ0ꢃꢂ-ꢁꢅ1ꢅ U.S.A.  
ꢅ01.2ꢀꢀ.ꢅ992  
North America  
ꢅ00.ꢀꢀ0.0ꢅ91  
ꢅ01.2ꢀꢀ.ꢅ99ꢂ  
fax  
www.listentech.com  
Printed in the United States of America  
®
© 200ꢃ Listen Technologies Corporation All Rights Reserved 200ꢃ 200ꢄ010ꢀ  
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