Listen Technologies LR-500 User manual

LR-500 Page 1
Listen Technologies Corporation All rights reserved 92007
Listen Technologies Corporation • 14912 Heritagecrest Way • Bluffdale • Utah 84065-4818 U.S.A.
+1.801.233.8992 • +1.800.330.0891 North America • +1.801.233.8995 Fax
One of Listen’s most sophisticated receivers, the LR-500
Programmable Display Receiver offers the signature Look&ListenTM
LCD Display that shows programming status, channel, lock, battery
level, and RF signal strength. Channel selector buttons are easily
accessible on the front of the unit. It has channel SEEK capability and
is compatible with mono or stereo headsets. It takes AA batteries
(alkaline or NiMH rechargeable). SmartChargeTM capabilities
prevent overcharging. It’s easy to use, easy to program.
LR-500 Portable Programmable
FM Display Receiver
•Superior Audio Quality – 80 dB (70 dB with 863 MHz)
signal-to-noise ratio, setting the industry’s sound quality standard.
•A choice between 57 channels (17 channels with 863 MHz),
complete antenna and accessory options make Listen products
ideal for a wide range of applications.
•Programmability – Unneeded channels can be locked so this
receiver will access only one or more channels of your choice.
•100 % Digital – Listen receivers are digitally-tuned so transmission
won’t drift; assurance that when you select a channel, it stays
on the channel.
•Uses standard alkaline or NiMH batteries.
•Built in SmartCharge™ won’t allow batteries to overcharge.
Charging circuitry is conveniently built into Listen’s receivers;
never worry about unplugging a transformer at a certain time.
•Transformer charging plug or for the ultimate convenience
drop in charging contacts.
•Limited Lifetime Warranty with hassle-free support.
LR-500-072/216
The FM receiver shall be capable of receiving on 57 wide and
narrow band channels. The receiver shall have a SNR of 80 dB or
greater. The receiver shall be programmable to electronically lock
out unneeded channels. The receiver shall be capable of seeking
channels. The device shall have a squelch. The device shall have
an audio frequency response of 50 Hz to 15 KHz, ± 3 dB at 72 MHz
and 50 - 10 kHz (±3dB) at 216 MHz. The device shall incorporate a
stereo headset jack that allows the user to plug in either a mono
or stereo headset and listen to audio normally. The device shall
incorporate an LCD display that indicates channel, battery level,
low battery, battery charging, RF signal strength and channel lock
status. The receiver shall incorporate automatic battery charging
circuitry for recharging of NiMH batteries. The device shall have a
switch able option for the use of (2) alkaline or (2) NiMH batteries.
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LR-500-863
The FM receiver shall be capable of receiving on 17 wide band
channels with a SNR of 70dB or greater. The receiver shall be
programmable to electronically lock out unneeded channels. The
receiver shall be capable of seeking channels. The device shall
be able to be locked on a single channel. The device shall have
an adjustable squelch. The device shall have an audio frequency
response of 50 Hz to 15 KHz, ±3 dB. 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
indicates channel, battery level, low battery, battery
charging, and RF signal strength. The receiver shall be able to
function in both DX and Local mode. The unit shall operate off of
2 AA batteries. The receiver shall incorporate automatic battery
charging circuitry for recharging of NiMH batteries. The Listen
/5LVVSHFLÀHG
LA-361 - High Capacity AA Alkaline Batteries (2)
LA-362 - Rechargeable AA NiMH Batteries (2)
Highlights $UFKLWHFWXUDO6SHFLÀFDWLRQ
LR-500-072
LR-500-216
LR-500-863
&RQÀJXUDWLRQ
Requires:
LR-500 Portable Programmable Display FM Receiver
Owner’s manual (72 MHz & 216 MHz)
Quick Reference Card (863 MHz)
Limited Lifetime Warranty Program Card (863 MHz)
FM System Design Guide and Manual Card (863 MHz)
,QFOXGHV
LT-800 Stationary FM Transmitter
LT-700 Portable FM Display Transmitter
LA-161 Single Ear Bud
LA-162 Stereo Ear Bud
LA-164 Ear Speaker
LA-165 Stereo Headphones
LA-166 Neck Loop
LA-170 Behind-the-Head Stereo Headphones
8VHG:LWK

LR-500 Page 2
Listen Technologies Corporation All rights reserved 92007
Listen Technologies Corporation • 14912 Heritagecrest Way • Bluffdale • Utah 84065-4818 U.S.A.
+1.801.233.8992 • +1.800.330.0891 North America • +1.801.233.8995 Fax
1. An earphone jack (3.5 mm) that accepts either mono or stereo headsets. . Receiver antenna is built into the
earphone cord, eliminating additional wires while maximizing receiver effectiveness.
2. Multifunction LED indicates power on, if batteries are low, if the unit is locked on a channel when SEEK is
pressed and charging status.
3. Easy on/off volume control.
4. Look&Listen™ LCD Display shows channel selection, channel lock and battery level.
6HHNVWRÀQGEHVWDYDLODEOHEURDGFDVW$OVRXVHGWRDGMXVWVTXHOFKLQVWHSVZKLFKPXWHVDXGLRRQORVVRI 
RF signal.
6. When enabled, SQ provides highest audio quality available in its product category. SQ can be disabled for
compatibility with other assistive listening equipment.
7. Uses two AA batteries. Selectable to use either alkaline or Listen’s advanced NiMH Rechargeable AA
%DWWHULHV6PDUW&KDUJHLQFRUSRUDWHGLQWRUHFHLYHUPDNHVVXUHHDFKXQLWUHFHLYHVWKHPRVWEHQHÀFLDO 
charge.
8. Digitally tuned with UP, DOWN, and SEEK buttons behind manually lockable door. Electronically lock on
channel by holding the SEEK button down 5 seconds to prevent tampering.
9. Manually lockable battery compartment door.
10. Charging plug port.
11. Contact points for Listen’s drop in charging cases.
12. Exclusive belt clip “loop” prevents unit from slipping off belt or strap.
3URGXFW)HDWXUHV/5
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LR-500 Page 3
Listen Technologies Corporation All rights reserved 92007
Listen Technologies Corporation • 14912 Heritagecrest Way • Bluffdale • Utah 84065-4818 U.S.A.
+1.801.233.8992 • +1.800.330.0891 North America • +1.801.233.8995 Fax
1. An earphone jack (3.5 mm) accepts either mono or stereo headsets. Receiver antenna is built into the
earphone cord, eliminating additional wires while maximizing receiver effectiveness.
2. Multifunction LED indicates power on, if batteries are low, if the unit is locked on a channel when SEEK is
pressed and charging status.
3. Easy on/off volume control.
4. Look&Listen™ LCD Display shows channel selection, channel lock and battery level.
6HHNVWRÀQGEHVWDYDLODEOHEURDGFDVW$OVRXVHGWRDGMXVWDEOHVTXHOFKLQVWHSVPXWHVDXGLRRQORVVRI5)
signal.
6. Uses two AA batteries. Selectable to use either alkaline or Listen’s advanced NiMH rechargeable AA
batteries. SmartCharge™ incorporated into receiver makes sure each unit receives the most
EHQHÀFLDOFKDUJH
7. Digitally tuned with UP, DOWN, and SEEK buttons behind manually lockable door. Electronically lock on
channel by holding the SEEK button down 5 seconds to prevent tampering.
8. Manually lockable battery compartment door.
9. Charging plug port.
10. Contact points for Listen’s drop in charging cases.
11. Exclusive belt clip “loop” prevents unit from slipping off belt or strap.
3URGXFW)HDWXUHV/5
5
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LR-500 Page 4
Listen Technologies Corporation All rights reserved 92007
Listen Technologies Corporation • 14912 Heritagecrest Way • Bluffdale • Utah 84065-4818 U.S.A.
+1.801.233.8992 • +1.800.330.0891 North America • +1.801.233.8995 Fax
v$FFHVVRULHV
&KDUJLQJ&DUU\LQJ&DVHVZLWK5HPRYDEOH/LG
LA-323-01 4-Unit Portable FM Product Charging/Carrying Case w/Removable Lid (N. America)
LA-323-02 4-Unit Portable FM Product Charging/Carrying Case w/Removable Lid (Asia, UK)
LA-323-03 4-Unit Portable FM Product Charging/Carrying Case w/Removable Lid (Euro)
LA-324-01 8-Unit Portable FM Product Charging/Carrying Case w/Removable Lid (N. America)
LA-324-02 8-Unit Portable FM Product Charging/Carrying Case w/Removable Lid (Asia, UK)
LA-324-03 8-Unit Portable FM Product Charging/Carrying Case w/Removable Lid (Euro)
LA-325-01 16-Unit Portable FM Product Charging/Carrying Case w/Removable Lid (N. America)
LA-325-02 16-Unit Portable FM Product Charging/Carrying Case w/Removable Lid (Asia, UK)
LA-325-03 16-Unit Portable FM Product Charging/Carrying Case w/Removable Lid (Euro)
&KDUJLQJ&DUU\LQJ&DVHV
LA-311-01 16-Unit Portable FM Product Charging/Carrying Case (North America)
LA-311-02 16-Unit Portable FM Product Charging/Carrying Case (Asia, UK)
LA-311-03 16-Unit Portable FM Product Charging/Carrying Case (Euro)
LA-317-01 4-Unit Portable FM Product Charging/Carrying Case (North America)
LA-317-02 4-Unit Portable FM Product Charging/Carrying Case (Asia, UK)
LA-317-03 4-Unit Portable FM Product Charging/Carrying Case (Euro)
LA-321-01 8-Unit Portable FM Product Charging/Carrying Case (North America)
LA-321-02 8-Unit Portable FM Product Charging/Carrying Case (Asia, UK)
LA-321-03 8-Unit Portable FM Product Charging/Carrying Case (Euro)
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LA-202 Power/Charging Supply for FM Portable Products
LA-208-01 7.5 VDC Power/Charging Supply for FM Portable Products (North America)
LA-208-02 7.5 VDC Power/Charging Supply for FM Portable Products (Asia, UK)
LA-208-03 7.5 VDC Power/Charging Supply for FM Portable Products (Euro)
&DEOHV
LA-265 Consumer Camcorder Cable
LA-266 Professional Camcorder Cable
/$6DFULÀFLDO&DEOH
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LA-306 Soft Case (72 MHz & 216 MHz only)
LA-319 Protective Pouch for Portable FM Products
/$&RQÀJXUDEOH&DUU\LQJ&DVH
LA-330 Portable Unit Lanyard
LA-202
LA-266
LA-321
LA-324
LA-330

LR-500 Page 5
Listen Technologies Corporation All rights reserved 92007
Listen Technologies Corporation • 14912 Heritagecrest Way • Bluffdale • Utah 84065-4818 U.S.A.
+1.801.233.8992 • +1.800.330.0891 North America • +1.801.233.8995 Fax
6SHFLÀFDWLRQV LR-500-072 LR-500-216
RF
RF Frequency Range 72.025 - 75.950 MHz 216.0125 - 216.9875 MHz
Number of Channels 17 wide band, 40 narrow band 19 wide band, 38 narrow band
Sensitivity .6 uV typical, 1 uV maximum for 12dB sinad
Frequency Accuracy VWDELOLW\ÝWRÝ)ÝÝ&
Antenna Uses earphone cable
Squelch Programmable in 20 steps, automatic on loss of RF signal
Compliance FCC Part 15, Industry Canada FCC Part 90, Industry Canada
$OOV\VWHPVSHFLÀFDWLRQVDUHZLUHOHVVHQGWRHQG
Audio
System Frequency Response 50 Hz - 15 kHz (+/-3db) 72 MHz 50 - 10 kHz (+/-3db) 216 MHz
System Signal to Noise Ratio
(A-Weighted) SQ enabled: 80dB; SQ disabled 60dB
System Distortion <2% total harmonic distortion (THD) at 80% deviation
Output 3.5 mm connectors, unbalanced, 0dBu nominal output level,
16 mW maximum, impedance 32 Ohms
Controls
User Controls Channel up/down, SEEK, volume
Set up Controls
(battery compartment) Alkaline/NiMH batteries, SQ enable/disable
Programming Channel lock, squelch, Channel Lock Out
Indicators LED Red, illuminated when unit is on. Flashes when batteries are low, or to indicate
charging, Flashes when locked and SEEK is pushed
Display Channel Designation, lock status, signal strength indication, Programming
Power
Battery Type Two AA batteries, alkaline or NiMH
Battery Life (Listen Batteries) 30 hours alkaline (LA-361), 15 hours NiMH rechargeable (LA-362)
Battery Charging (NiMH only) Fully automatic, 14 hours
Power Supply I/P 120VAC; O/P 7.5VDC 250 mA; Drop in contact points for use with charging
cases. Power supply not included (LA-202)
Power Supply Connector 2.3 mm OD by 0.7 mm ID, barrel type connector, 7.5 VDC, center positive <250
mA. Drop in contact points for use with Listen charging/carrying cases.
Power Supply Compliance RoHS, WEEE, UL, PSE, CE, CUL, TUV, CB compliant
Physical
Dimensions (H x W x D) 5.0 x 3.0 x 1.0 in. (13.0 x 7.6 x 2.5 cm)
Color Dark Grey with white silk screening
Unit Weight 3.9 oz. (111 g)
Unit Weight with batteries 5.8 oz. (164 g)
Shipping Weight 1.0 lb. (0.45 kg)
Door Manually lockable. UP, DOWN, and SEEK through door, other controls behind door
(see Controls above)
Environmental Temperature - Operation ÝWRÝ)ÝWRÝ&
Temperature - Storage ÝWRÝ)ÝWRÝ&
Humidity 0 to 95% relative humidity, non-condensing
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LR-500 Page 6
Listen Technologies Corporation All rights reserved 92007
Listen Technologies Corporation • 14912 Heritagecrest Way • Bluffdale • Utah 84065-4818 U.S.A.
+1.801.233.8992 • +1.800.330.0891 North America • +1.801.233.8995 Fax
Indicators LED Red, illuminated when unit is on. Flashes when
batteries are low, or charging. Flashes when locked and
SEEK is pushed.
LCD Display Channel Designation, lock status, signal strength
indication, programming
Power
Battery Type Type: 2 AA batteries, Alkaline or NiMH
Battery Life (Listen Batteries) 20 hours alkaline (LA-361),
10 hours NiMH rechargeable (LA-362)
Battery Charging (NiMH only) Fully automatic, 13 hours maximum
Power Supply (LA-208-03) 7.5VDC, center positive 300mA. Drop in contact points for use with charging cases. Power supply not included
(LA-208-03).
Power Supply Connector 2.3 mm OD by .7 mm ID, barrel type
Power Supply Compliance RoHS, WEEE, UL, PSE, CE, CUL, TUV, CB compliant
Physical
Dimensions (H x W x D) 5.0 x 3.0 x 1.0 in (13.0 x 7.6 x 2.5 cm)
Color Dark Grey with white silk screening
Unit Weight 3.9 oz. (111 g)
Unit Weight with batteries 5.8 oz.. (164 g)
Shipping Weight 1.0 lbs. (0.45 kg)
Door Manually lockable. Up, down, and power buttons through door. Other controls behind door
(see controls)
Environmental Temperature - Operation 14Ý- 104Ý) (-10ÝÝ& Temperature - Storage -4 - 122Ý) (-20Ý- 50Ý&
Humidity 0 to 95% Relative Humidity, non condensing
6SHFLÀFDWLRQV LR-500-863
RF
RF Frequency Range 863.050 - 864.950 MHz
Number of Channels 17 Wideband
Sensitivity .6uV typical, 1 uV maximum for 12 dB sinad
Frequency Accuracy +/-.005% stability 32 to 122ÝF (0- 50ÝC)
Antenna Integrated External Antenna
Squelch Programmable in 20 steps, automatic on loss of RF signal
Compliance CE, ETSI, RoHS
$OOV\VWHPVSHFLÀFDWLRQVDUHZLUHOHVVHQGWRHQG
Audio
System Frequency Response 50Hz - 15kHz (+/-3db)
System Signal to Noise Ratio 70db (A-Weighted)
System Distortion <2% total harmonic distortion (THD) at 80% deviation
Output 3.5 mm connector, unbalanced, 0dBu nominal output
level, 16 mW maximum, impedance 32 Ohms
Controls User Controls Channel up/down, SEEK, volume Set up Controls (battery compartment) Alkaline/NiMH battery switch
Programming Channel Lock Out, Channel Lock, DX/Local, squelch

LR-500 Page 7
Listen Technologies Corporation All rights reserved 92007
Listen Technologies Corporation • 14912 Heritagecrest Way • Bluffdale • Utah 84065-4818 U.S.A.
+1.801.233.8992 • +1.800.330.0891 North America • +1.801.233.8995 Fax
QWhat is the difference between the LR-400 and the LR-500?
AThe LR-500 gives the user an opportunity to lockout unused channels.
QCan the LR-500 be used with multiple transmitters?
QHow many channels can I program into the LR-500?
A1 to 57 (17 channels with 863 MHz). The receiver has 57 (17 channels with 863 MHz) channels and
you can program it to have just the channels you want to access. It can be a two channel
receiver, a 12 channel receiver, or use all channels.
AYes. We recommend the LR-500 for use with multiple transmitters. The LR-500 is programmable and can be
set to just those channels you need.
QHow many receivers can I have in a system?
AAs many as you need, the number is endless.
)UHTXHQWO\$VNHG4XHVWLRQV
QWhat is the function of SQ?
ATo reduce noise of its systems, Listen now offers a noise reduction technology called ListenSQ™ (on
72 MHz and 216 MHz only). Both the transmitter and receiver must have SQ on to achieve the desired
results. If you are planning to use this product with older Listen systems or equipment not manufactured
by Listen, you should disable SQ.
QWhat is the warranty of Listen receivers?
ALimited lifetime warranty. The following cases will void the warranty:
• Misuse, dropping, or any other noticeable cosmetic damage.
• Charging Alkaline batteries instead of NiMH.
• Overheating the charging process by closing the lid on the charging case.
AAlkaline batteries last 30 hours. NiMH rechargeable batteries last 15 hours (72 MHz and 216 MHz). With 863 MHz,
Alkaline batteries last 20 hours and NiMH rechargeable batteries last 10 hours.
QHow long do the batteries last on the LR-500 receiver?