Listen Technologies LR-100-072 Users Manual

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
satisfi ed. 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,
effi cient 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.

Here’s how to reach us:
+1.801.233.8992
+1.800.330.0891
+1.801.233.8995

North America
fax

[e-mail]
www.listentech.com

Thank you and enjoy your listening experience!
Best regards,

Russell Gentner and the Listen Team

• In the few instances where repairs were needed, 99% of all clients indicated that they were happy with
repair turn-around-times and 85% of the time, clients were without their product for less than 10 days!

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Assistive Listening • Language Interpretation • Soundfi eld • Tour Group • Conferencing

Tab
le

of

Con

ten
ts

Spe

cifi
cations

Set

up

Instructions

Operating

Instructions

RF
Rec

ept

ion

Information

Channel

Selection

Package Contents

Quick

Reference

Listen

SQ™

Com

pat

ibilit

y C

harts

ents

kage

Contentskage Contents

LR-100 Table of Contents

Package Contents 3
Specifi cations 4
Architectural Specifi cations 4
Specifi cations 4

Quick Reference 6
Block Diagram 8
Setup Instructions 9
Installation 11
Speaker Connection 12
Antenna Installation 12

Programming 13
Squelch Adjustment 14
Listen SQ™ 15
Channel Selection 16
RF Reception Maximization Strategies 17

Resetting After an Overload Condition 17
Coaxial Cable 18
72 MHz Frequency Compatibility Table 19
216 MHz Frequency Compatibility Table 20

Table of Contents

Table of Contents Package Contents Specifi cations Quick Reference

Package Contents
Table of Contents

Specifi cations

Quick Reference

Setup Instructions Operating Instructions

Supplementary Information 21
Troubleshooting 21
Compliance Notice 22
FCC Statement 22
Warranty 23
Contacting Listen 23
Optional Accessories 24

1

Listen SQ™

Setup Instructions Programming

RF Reception

Channel Selection

Compatibility Charts

Information

Information

Spe

cifi
cations

LR-100 Package Contents

LR-100 Contents

• LR-100-072 (72 MHz) or

• LR-100-216 (216 MHz)

• 120 VAC Power Supply

• LA-123 90 Degree Helical Antenna (72 MHz) or

• LA-124 90 Degree Helical Antenna (216 MHz)

• Allen Wrench

• Warranty Card

• User Manual

Listen Part Number

LR-100-072 (72 MHz)
LR-100-216 (216 MHz)

Optional Accessories

See page 22

Package Contents

Specifi cations

3

Rec
ept

ion

RF Reception

Specifi cations

LR-100 Specifi cations

Architectural Specifi cations

The FM stationary receiver - power amplifier (receiver) shall be capable of receiving on 57 wide and
narrow band channels in the frequency ranges of either 72 MHz or 216 MHz. The receiver shall be
programmable to electronically lock out unneeded channels. The device shall have an adjustable
squelch with an LED indication. The frequency response of the device shall be within 3dB from 63 Hz to
15K Hz at 72 MHz, or within 3dB from 63 Hz to 10 kHz at 216 MHz. The signal to noise ratio shall be 80 dB or
greater. The device will have an integrated power amplifier capable of driving an 8 ohm speaker. The
device shall be rack mountable and shall have the capability of a remote antenna. The device shall
incorporate an LCD display that indicates channel and RF signal strength. The Listen LR-100 is specified.

Specifi cations LR-100-072 LT-800-216

RF Frequency Range 72.025 - 75.950 MHz 216.025 - 216.9875 MHz
Number of Channels 57 (17 wide band, 40 narrow band) 57 (19 wide band, 38 narrow band)
Frequency Accuracy ± .005% stability +32º to +122 ºF (0º to +50 ºC)

RF

Audio

Sensitivity .6uV typical, 1 uV maximum for 12dB SINAD
Optional Antennas Various antennas available
Antenna LA-123 90° Helical Antenna (72 MHz) LA-124 90° Helical Antenna (216 MHz)
Antenna Connector BNC
Compliance FCC Part 15, Industry Canada FCC Part 90, Industry Canada

System Frequency Response 50 Hz - 15 kHz (±3 dB) 50 Hz - 10 kHz (±3 dB)
System Signal to Noise Ratio

(A-Weighted)
System Distortion <2% total harmonic distortion (THD) at 80% deviation
Auxiliary Input to Output 25 Hz to 20 kHz (±3 dB) frequency reponse, SNR 80 dB, Distortion: <0.2%

Balanced Auxiliary Input

Unbalanced Auxiliary Input

Balanced Output

Unbalanced Output

Headphone Output (Monitor)

Speaker Output

80 dB SQ enabled, 60 dB SQ disabled 80 dB SQ enabled, 50 dB SQ disabled

Rear panel, one (1) female XLR-1/4 in combo connector, balanced, 0 dBu nominal input level adjustable, +13 dBu

Rear panel, two (2) phono connectors, unbalanced, -10 dBu nominal input level adjustable, +7 dBu maximum,

Rear panel, two (2) phono connectors, unbalanced, -10 dBu nominal output level, +2 dBu maximum, impedance

Front Panel, one (1) 3.5mm stereo connector, unbalanced, adjustable output level, +7 dBu maximum, impedance

Rear panel, one (1) detachable terminal block, bridged, adjustable output level, 15/10 watts (peak/RMS) continuous

** All system specifi cations are wireless end-to-end

maximum, impedance 600 ohm

impedance 10k ohm

Rear panel, one (1) male XLR, balanced, 0 dBu nominal output level, +16 dBu maximum, impedance

2k/10 Ohms (line/mic)

2k ohm

10 ohm

power with 4 ohm load

Controls

Indicators

Power

Set-up Controls Front Panel
(Behind Security Cover)

User Contols Volume, channel UP/DOWN, SEEK (all controls except volume are lockable)
Set-up Contors Rear Panel
Remote Controls Eight (8) position detachable terminal block, channel up, channel down, mute
Programming

VU Meter Four (4) LED (three green, one red)
Power Indicated by a green LED when on (front panel)
RF Power Indicated on the LCD (low, mid, high)
LCD Display Channel designation, lock status, RF power level, programming (front panel)
Squelch Green LED illuminates when the unit is squelched
Mute Green LED illuminates when the output audio is muted

Power Supply Type In line power supply, Listen part number LA-201
Power Supply Input Input: 120 VAC, 60 Hz, 19 Watts
Power Supply Output Output: 15 VAC, 1 Amp
Power Supply Connector Output Connector: .02 in (5.0 mm) OD, .01 in. (2.5 mm) ID, barrel type
Power Supply Compliance UL Listed
Optional Battery 12VDC, connected via terminal block
Optional Battery Charging Trickle charge of optional 12VDC battery through terminal block connection

Power, test tone on/off, channel up/down, input levels, mix level, contour, monitor volume control

“Audio output select (RX Only, RX + AUX, RX or AUX),

Speaker (Output, Aux), switchable balanced output level”

Unit can be programmed so that only desired channels are displayed to the user, channel selection can be locked by

holding the SEEK button 5 seconds.

4

Physical

Environmental

Dimensions (H x W x D) 1.75 x 8.50 x 9.13 in. (4.5 x 21.5 x 23 cm)
Color Dark Grey with white silk screening
Unit Weight 2.8 lbs. (1.3 kg)
Unit Weight with LA-201

Power Supply
Shipping Weight 5.6 lbs. (2.5 kg)

Rack Mounting

Temperature - Operation -10 ºC (14 ºF) to +40 ºC (104 ºF)
Temperature - Storage -20 ºC (-4 ºF) to +50 ºC (122 ºF)
Humidity 0 to 95% Relative Humidity, non condensing

One (1) rack space height, 1/2 rack space wide, one (1) or two (2) receivers can be mounted in one rack space, optional

Specifi cations are subject to change without notifi cation

4.2 lbs. (1.9 kg)

rack mount (LA-326)

Specifi cations

5

Instructions

LR-100 Quick Reference

LR-100 Front Panel

VU METER: Set Receive and
Auxiliary levels so that the
red LED (at right) does not
illuminate.

POWER SWITCH:
If operated on battery,
switch is inoperative.

Quick Reference

Operating Instructions

LR-100

Power

MUTE: When lit, the OUTPUT
audio is muted. MUTE is
activated and deactivated
by a momentary closure to
ground on the rear
detachable terminal block
(see next page).

Output Level

ACCESS PANEL:
Remove to make set-up
adjustments.

Mute

Squelch

UP and DOWN:
Channel tuning
buttons.

SQUELCH: Adjustable
squelch LED indicator
for signal capture
control.

Up

Down

RF Power

Look & Listen™
Display: See details
below

SEEK: Press to find the next
strong signal. Also used to
lock and unlock channel
selection; press and hold for
5 seconds. A padlock will
appear on the display when
locked. Press and hold again
to unlock.

Channel

Seek

Headphone

HEADPHONE:
Connect a mono or
stereo headphone
here - 3.5 mm plug
(mini).

Speaker

SPEAKER CONTROL:
Adjusts the volume
of your loudspeaker
connected to the
LR-100, and/or the
headphone.

LR-100 Behind Front Access Panel LR-100 LCD Panel Details

SQUELCH: Adjust so that when

RECEIVE AUDIO LEVEL
ADJUSTMENT

AUXILIARY
AUDIO LEVEL
ADJUSTMENT

your transmit audio is off, the
Squelch LED is illuminated. When
squelched, audio is muted (this
keeps you from hearing hiss in your
speakers).

SQ™: To activate, move
switch to ON position.
This switch should be
turned OFF if any of your
equipment does not have
SQ capability. See “Listen
SQ™” on page 15 for more
information.

RF SIGNAL STRENGTH

PGM: When showing,
the unit is in Program
mode to lock out
unwanted channels
from user access.

When the padlock is
visible, the channel is
locked. Press and hold
SEEK for 5 seconds to
unlock or lock.

Indicates the currently
tuned channel

I/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.

6