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Architectural Specifications
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 72MHz or 216MHz. The receiver shall be programmable to
electronically lock out unneeded channels. The device shall have an adjustable squelch with an LED indica-
tion. The frequency response of the device shall be within 3dB from 63Hz to 15KHz at 72MHz, or within 3dB
from 63Hz to 10kHz at 216MHz. The signal to noise ratio shall be 80dB 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.
Specifications
Specifications
Specification LR-100-072 LR-100-216
RF Frequency Range 72.025 - 75.975 MHz 216.025 - 216.987 MHz
Number of Channels 57 (17 wide, 40 narrow) 57 (19 wide, 38 narrow)
Sensitivity
Frequency Accuracy
Antenna
Flexible helical,
9.0 in (23 cm) included
Flexible helical,
5.5 in (14 cm) included
Optional Antennas
Antenna Connector
Squelch
Compliance
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
System Distortion
Auxiliary Input to Output
Balanced Auxiliary Input
Unbalanced Auxiliary Input
Balanced Output
Unbalanced Output
Headphone Output
Speaker Output
Set-up Controls,
Front Panel behind Security Cover
Set-up Controls, Back Panel
User Controls
Remote Controls
Programming
VU Meter
Power
LCD Display
Squelch
Mute
Power Supply Type
Power Supply Input
Power Supply Output
Power Supply Connector
Compliance
Optional Battery
Optional Battery Charging
Dimensions
Unit Weight
Unit Weight w/LA-201 Power Supply
Shipping Weight
Rack Mounting
Temperature - Operation
Temperature - Storage
Humidity
Trickle charge of optional 12VDC battery through terminal block
.6uV typical, 1 uV maximum for 12dB SINAD
Several available. See www.ListenTech.com for details
-10° to +40°C (14° to 104° F)
BNC
Rear panel. Two Phono connectors, unbalanced, -10dBu nominal output
level, +2dBu maximum, impedance 2k Ohms
Front panel. One 3.5mm stereo connector, unbalanced, adjustable output
level, +16dBu maximum, impedance 32 Ohms, 120mW.
15VAC, 1A
.02 in OD x .01 in ID (5.0mm x 2.5mm) ID, barrel type
** All system specifications are wireless end-to-end
Green LED illuminates when the unit is squelched
12VDC, connected via terminal block
UL Listed
In-line power supply, Listen part number LA-201
120VAC, 60 Hz, 19 watts (maximum continuous)
Unit can be programmed so that only desired channels are displayed to
the user, chaannel selection can be locked by holding the SEEK button 5
seconds.
Four LED (three green, one red)
Green LED illuminates when the unit is powered up
Channel, RF signal strength, lock status, programming
0-95% relative humidity, non-condensing
2.8 lbs (1.3kg)
5.6 lbs (2.5kg)
1/2 rack unit (RU), optional rack mount not include,
order Listen part number LA-326
-20° to +50° (-4° to 122° F)
± .005% stability 0° to 50°C (32° to 122° F)
Rear panel, One detachable terminal block, bridged, adjustable output
level, 15/10 watts (peak/RMS) continuous power with 4 Ohm load
Rear panel. Two Phono connectors, unbalanced, -10dBu nominal input
level adjustable, +7dBu maximum, impedance 10k Ohms
Rear panel. One Male XLR, balanced, 0dBu nominal output level, +16dBu
maximum, impedance 2k/10 Ohms (line/mic)
Continuously adjustable via front panel trim pot
Frequency Response: 25Hz to 20kHz (±3dB), SNR: >80dB, Distortion: <0.2%
Rear panel. One Female XLR-1/4 in combo connector, balanced, 0dBu
nominal input level adjustable, +13dBu maximum, impedance 600 Ohms
FCC Part 15, Industry Canada
<2% total harmonic distortion (THD) at 80% deviation
Environmental
RF
Audio
Indicators
Receive level, auxiliary input level, SQ on/off, squelch
Audio output select (RX Only, RX + AUX, RX or AUX),
Speaker (Output, Aux), switchable balanced output level
Controls
4.2 lbs (1.9kg)
Power
Physical
Green LED illuminates when the output audio is muted
Eight position detachable terminal block, channel up, channel down, mute
Volume, channel UP/DOWN, SEEK (all controls except volume are lockable)
8.0 in x 8.0 in x 1.75 in WxDxH (20.3cm x 20.3cm x 4.45cm)