Listen Technologies Satellite Radio LR 500 User Manual

User’s Manual  
LR-500 Programmable Display Receiver  
LR-400 Display Receiver  
LR-300 Receiver  
Listen Technologies Corporation  
8535 South 700 West, Suite A  
Sandy, Utah 84070-2515 USA  
Telephone: +1.801.233.8992  
Toll Free (North America): 1.800.330.0891  
Fax: +1.801.233.8995  
Don’t miss a single sound. Listen.  
E-mail: info@ListenTech.com  
 
Listen® and the Listen logo are registered trademarks of Listen Technologies Corporation  
Receivers Table of Contents  
LR-500 User’s Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3  
LR-500 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5  
LR-400 User’s Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23  
LR-400 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25  
LR-300 User’s Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41  
LR-300 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43  
Supplementary Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55  
Channel Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56  
Listen SQ™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58  
RF Reception Maximization Strategies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59  
72 MHz Frequency Compatibility Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60  
216 MHz Frequency Compatibility Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62  
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64  
Compliance Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67  
FCC Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68  
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69  
Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70  
 
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User’s Manual  
LR-500 Programmable Display Receiver  
Don’t miss a single sound. Listen.  
Listen Technologies Corporation  
8535 South 700 West, Suite A  
Sandy, Utah 84070-2515 USA  
Telephone: +1.801.233.8992  
Toll Free (North America): 1.800.330.0891  
Fax: +1.801.233.8995  
 
3
LR-500 Package Contents  
Listen Part Number  
·
·
·
LR-500 (72MHz or 216MHz)  
Warranty Card  
Receiver User Manual  
72 MHz: LR-500-072  
216 MHz: LR-500-216  
Optional Accessories  
See pages 70-71.  
 
4
LR-500 Table of Contents  
Architectural Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6  
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6  
Quick Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8  
Setup Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11  
Operation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14  
Programming Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16  
Squelch Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17  
Squelch Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18  
Charging Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19  
Wall Transformer Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21  
Supplementary Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55  
Channel Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56  
Listen SQ™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58  
RF Reception Maximization Strategies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59  
72 MHz Frequency Compatibility Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60  
216 MHz Frequency Compatibility Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62  
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64  
Compliance Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67  
FCC Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68  
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69  
Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70  
 
5
LR-500 Specifications  
Architectural Specifications  
The FM receiver shall be capable of receiving on 57 wide and narrow band channels with a SNR of 80dB or greater.  
The receiver shall be programmable to electronically lock out unneeded channels. The receiver shall be capable of seek-  
ing channels. The device shall have an adjustable squelch. The device shall have an audio frequency response of 63Hz  
to 15KHz, 3dB at 72MHz, or of 63Hz to 10kHz, 3dB at 216MHz. The device will incorporate a stereo headset jack  
that allows the user to plug in either a mono or stereo headset. The device shall incorporate an LCD display that indi-  
cates channel, channel lock or lock status, battery level, low battery, battery charging, and RF signal strength. The  
receiver shall incorporate automatic battery charging circuitry for recharging of NiMH batteries. The Listen LR-500 is  
specified.  
Specifications  
Specification  
RF Frequency Range  
Number of Channels  
Sensitivity  
LR-500-072  
72.025 - 75.950 MHz  
57 (17 wide, 40 narrow)  
LR-500-216  
216.025 - 216.975 MHz  
57 (19 wide, 38 narrow)  
.6uV typical, 1 uV maximum for 12dB SINAD  
.005% stability 0° to 50°C (32° to 122° F)  
Uses earphone cable  
Frequency Accuracy  
Antenna  
RF  
3.5mm connector  
Antenna Connector  
Squelch  
Programmable in 20 steps  
FCC Part 15, Industry Canada  
Compliance  
** All system specifications are wireless end-to-end  
System Frequency Response  
63Hz - 15kHz ( 3dB)  
63Hz - 10kHz ( 3dB)  
System Signal to Noise Ratio  
(A-weighted)  
SQ enabled: 80dB; SQ disabled 60dB  
SQ enabled: 80dB; SQ disabled 50dB  
Audio  
<2% total harmonic distortion (THD) at 80% deviation  
System Distortion  
3.5mm connectors, unbalanced, 0dBu nominal output level,  
16mW maximum, impedance 32 Ohms  
Output  
continued on next page  
 
6
LR-500 Specifications continued  
Specification  
LR-500-072  
LR-500-216  
Programmable channel selection (see below), alkaline/NiMH batteries  
and squelch, SQ enable/disable  
Set Up Controls  
Volume, channel UP/DOWN, SEEK. All controls except volume are electronically lockable.  
User Controls  
Programming  
Controls  
Unit can be programmed so that only desired channels are displayed. Squelch can be  
adjusted for sensitivity and signal capture control. Channel selection can be locked by  
holding the SEEK button 5 seconds.  
Indicates channel, RF signal strength, lock status, squelch, battey power level and channel  
programming.  
Red, illuminates when unit is on. Flashes when batteries are low. Flashes when charging.  
LCD Display  
LED  
Indicators  
Flashes when locked and user attempts to seek to another channel  
Two AA batteries, alkaline or NiMH  
30 hours alkaline (LA-361), 15 hours NiMH rechargeable (LA-362)  
Fully automatic, 14 hours  
Battery Type  
Battery Life (Listen batteries)  
Battery Charging (NiMH only)  
Power  
2.3mm OD by 0.7mm ID, barrel type connector. 7.5VDC, center positive <250mA. Drop in  
contact points for use with Listen charging cases.  
Power Supply Connector  
Compliance  
UL Listed  
3.0 in x 1.0 in x 5 in WxDxH (7.6cm x 2.5cm x 13.cm)  
Dimensions  
3.9oz (111g)  
5.8 oz (164.4g)  
1.0 lbs (453.6kg)  
Unit Weight  
Unit Weight with batteries  
Shipping Weight  
Physical  
Manually lockable. UP, DOWN and SEEK through door, other  
controls behind door (see Controls above).  
Door  
-10° to 40°C (14° to 104° F)  
-20° to 50°C (-4° to 122° F)  
Temperature - Operation  
Temperature - Storage  
Humidity  
Environmental  
0 to 95% relative humidity, non-condensing  
 
7
Quick Reference  
LR-500 Front  
LED - when lit, indicates  
unit has power.  
3.5mm Input Jack  
A Listen earpiece or headset  
connects here.  
ON/OFF & VOLUME control dial  
Look & Listen™ display shows receive  
level, channel, battery status, PROGRAM  
mode, whether a channel is locked, and  
whether a channel is locked out from  
selection (PROGRAM mode). See close-  
up on page 10.  
Adjustable Squelch:  
The default factory preset for squelch  
is 03.(See page 18 for Squelch  
programming information)  
Use UP and DOWN buttons to select a  
channel.  
SEEK button allows the user  
to change channels or to  
lock on a channel  
Press and hold both buttons for 5 seconds  
to enter PROGRAM mode. The PGM icon  
will appear in the display. To exit PROGRAM,  
let unit sit idle for 5 seconds.  
 
8
Quick Reference  
LR-500 Inside Access Door  
LR-500 Top of Unit  
SQ Switch  
Battery Select  
Switch  
LED indicators  
·
·
·
Steady Red: Normal operation  
Slow Flashing: Battery is low  
Slow Flashing while charging: Unit is charging  
Battery Select Switch - place in NiMH position ONLY if you  
are using Nickel Metal Hydride batteries, otherwise, leave it  
in the Alkaline position.  
ON/OFF and VOLUME control dial -  
rotate the dial counter-clockwise to  
turn unit on and increase volume.  
3.5mm Input Jack  
A Listen earpiece or headset  
connects here.  
SQ Switch: shipped in the ON position, use a screwdriver  
or pen to slide to the OFF position if needed. You should  
turn SQ off if any of your receivers do not have SQ.  
 
9
Quick Reference  
LR-500 Look & Listen™ Display  
Dots indicate the relative RF  
signal strength.  
Indicates the currently  
tuned channel  
Battery level indicator. The indi-  
cator flashes, along with the red  
LED on top of the unit, to alert  
you when the battery is low and  
needs to be charged or  
changed.  
Indicates the unit is in PROGRAM mode.  
To enter PROGRAM mode, press and hold  
the UP and DOWN keys until the PGM icon  
appears in the display. To exit PROGRAM  
mode let unit sit idle for 5 seconds. See  
page 16 for complete instructions.  
L/O: while in Program mode, this symbol  
indicates that a channel is locked out and  
will not be available to the user. Press  
SEEK to toggle channels between Locked  
Out and non-Locked Out modes.  
When the padlock is visible the unit is  
locked on channel currently displayed.  
Press and hold SEEK for 5 seconds to  
unlock or lock.  
LR-500 Battery Indicator  
Two segments showing:  
The batteries are at 25-49%  
capacity.  
All three segments showing:  
The batteries are at 50% or  
greater capacity.  
One segment showing:  
Your batteries less than 25% capacity. When  
this segment begins flashing along with the  
LED on top of the unit, you should immedi-  
ately change your batteries or recharge them  
(if using NiMH batteries).  
 
10  
LR-500 Setup Instructions  
Remove the product  
Remove outer packaging and plastic cover. Inspect for physical damage. If damage is aparent,  
please contact Listen Technologies Corporation technical sup-  
port for assistance. See page 69 for contact information.  
Open the front access door  
If locked, use a pocketknife or small screwdriver to unlock the  
door locks on both sides of the unit. To unlock the door, rotate  
the lock ¼ turn counterclockwise.  
Grip the two tabs with your thumb and index finger and pull  
the door downward. Do NOT place batteries in the unit yet.  
Select Battery Type  
See diagram on page 9. You have two choices: NiMH and  
Alkaline. The unit is shipped with the switch in the Alkaline  
position. Use a pen or small screwdriver to select the battery  
type.  
Unlocked  
Locked  
CAUTION: If you are using any battery type other than  
rechargeable Nickel Metal Hydride (NiMH) batteries, make sure the BATTERY selection  
switch is in the alkaline position.  
WARNING: Do not place the BATTERY switch in the NiMH position if you are not using  
Nickel Metal Hydride Batteries. The NiMH position will attempt to charge any batteries  
in the unit, even if they are not the proper type. Charging non-Nickel Metal Hydride  
(NiMH) batteries will result in physical harm, destruction of property and/or fire.  
 
11  
LR-500 Setup Instructions continued  
Set SQ switch  
The SQ switch is inside the battery compartment next to the Battery Select switch. The unit  
is shipped with SQ in the ON position. To turn it off, use a small screwdriver or pen to slide  
the switch to the OFF position (to the right). See page 58 for more information on SQ.  
Battery  
Select Switch  
SQ Select  
Switch  
Place Batteries in Unit  
Place two AA batteries in the compartment, making note of the battery polarity  
shown in the battery compartment, and again verifying that the BATTERY  
SELECT switch is in the correct position for the batteries you are using. (ALK  
should be selected for all battery types other than NiMH).  
NOTE: Listen uses 1800mAh (milli-Amp-hour) constant current NiMH  
(Nickel Metal Hydride) batteries. These may be purchased from your Listen  
dealer (ask for part number LA-362).  
 
12  
LR-500 Setup Instructions continued  
Connect an Earphone or Headset  
Your headset or earphone will connect to the jack on the top of the unit. Either mono or  
stereo connectors may be used with a Listen receiver. Make certain you push the plug all the  
way into the jack.  
Red LED will illuminate  
when on  
Turn the Unit On  
Earphone/Headset jack  
Receivers are turned on by rotating the volume  
dial counterclockwise. The red LED on top of  
the unit should activate and the LCD display  
should illuminate. If they do not, make sure you  
have installed the batteries correctly and that  
you are using fully charged batteries.  
Turn volume knob  
counterclockwise  
to turn on  
LCD display will  
activate when on  
Select Channel(s)  
See page 56 for complete channel selection information.  
Set Squelch  
See pages 17 and 18 for squelch and programming information.  
Program Channels  
see page 16.  
 
13  
LR-500 Operation Instructions  
Make Sure the Unit is On  
Rotate the volume knob counterclockwise with an earphone or headset connected to the unit.  
Listen receivers use the cable of the earphone or headset as a receiving antenna.  
Be careful when turning the unit on - if you turn the knob too far you might get too much vol-  
ume in your earphone!  
Select a Channel  
Select the channel to match the transmission channel by pressing the UP and DOWN buttons  
on the receiver.  
At 72MHz:  
72MHz receivers operate on 17 wide band channels and 40 narrow band channels. Channels  
represented by letters on the display (i.e. A) are wideband channels ; channels represented by  
numbers are narrowband channels.  
At 216MHz:  
216MHz receivers operate on 19 wide band channels and 38 narrow band channels. Channel  
numbers starting with a “2” are wide band; channels beginning with a “1” or “3” are narrow  
band channels.  
NOTE: Listen  
recommends the  
use of wide band  
transmitters.  
Refer to the Frequency Compatibility Tables (pages 60-63) for specific frequencies and com-  
patibility with other manufacturers.  
Test the audio  
If a transmitter is broadcasting on that channel, you will be able to hear the audio. If the sig-  
nal is too weak, the audio will be muted (squelched).  
 
14