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Front view of Stationary RF Receiver/Power Amplifier (72 MHz)
Stationary RF Receiver/Power Amplifier (72 MHz) (Discontinued)
Discontinued product Stationary RF Power Amplifier (72 MHz)

Stationary RF Receiver/Power Amplifier (72 MHz)

Item:LR-100-072b Price: Original price was: $723.60.Current price is: $578.88.B-STOCK

Used in conjunction with your Listen Technologies transmitter, the LR-100 RF Receiver/Power Amplifier delivers clear, high-quality audio performance ideal for multiple locations and applications.

Multiple input options make the LR-100 flexible to fit your specific venue and system needs, including wireless audio distribution. Our signature Look & Listen (TM) LCD display provides at-a-glance information about channel, lock, and battery status, and an integrated security cover prevents unauthorized changes to volume, squelch, and trim adjusments.

The LR-100 can be powered by either a 15 VAC/1000mA power input or 12 VDC battery, and requires only an antenna for proper reception.

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In stock

Includes

One (1) LR-100-072 Stationary RF Receiver/Power Amplifier (72 MHz)
One (1) LR-100 manual
One (1) LA-201 15 VAC Power Supply
One (1) LA-123 90° Helical Antenna (72 MHz)
One (1) Hex Wrench

 

Highlights

  • 100% digital signal for accurate channel locking and reliable reception
  • Programmable for locking in one or several of the 57 compatible channels
  • Superior audio quality thanks to an 80 dB signal-to-noise ratio (SNR)
  • Look & Listen (TM) LCD display clearly shows battery status, signal strength, and programming information
  • Built-in Smart Charge prevent battery overcharging and maximizes battery life
  • Drop-in charging contacts for use with Listen Technologies charging cases
  • Multiple input options and selectable output for added flexibility
  • Compatible with standard alkaline and NiMH rechargeable batteries
  • Optional 12 VDC power input available
  • Backed by Listen Technologies’ limited lifetime warranty and hassle-free support

 

Specs

+Audio

Frequency ResponseSystem: 50 Hz - 15 kHz (±3 dB)Input to Output: 25 Hz to 20 kHz (±3 dB)
Signal-to-Noise Ratio80 dB SQ enabled, 60 dB SQ disabled (A Weighted)
Distortion< 2% total harmonic distortion (THD) at 80% deviation
Input/sOne (1) female XLR-1/4 in combo connector, balanced, 0 dBu nominal input level adjustable, +13 dBu maximum, impedance 600 ohmTwo (2) phono connectors, unbalanced, -10 dBu nominal input level adjustable, +7 dBu maximum, impedance 10k ohm band, 40 narrow band

+Controls

User ControlsFront: Power, test tone on/off, channel up/down, input levels, mix level, contour, monitor volume controlRear: Audio output select (RX Only, RX + AUX, RX or AUX),Speaker (Output, Aux), switchable balanced output levelRemote Controls: Eight (8) position detachable terminal block, channel up, channel down, mute
ProgrammingUnit 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.

+Indicators

LCDChannel designation, lock status, RF power level, programming (front panel)
Power LEDIndicated by a green LED when on (front panel)
VU MeterFour (4) LED (three green, one red)
RF PowerIndicated on the LCD (low, mid, high)
SquelchGreen LED illuminates when the unit is squelched
MuteGreen LED illuminates when the output audio is muted

+RF

Frequency Range72.025 - 75.950 MHz
Output/sOne (1) male XLR, balanced, 0 dBu nominal output level, +16 dBu maximum, impedance 2k/10 Ohms (line/mic)Two (2) phono connectors, unbalanced, -10 dBu nominal output level, +2 dBu maximum, impedance 2k ohmOne (1) 3.5mm stereo connector, unbalanced, adjustable output level, +7 dBu maximum, impedance 10 ohmOne (1) detachable terminal block, bridged, adjustable output level, 15/10 watts (peak/RMS) continuous power with 4 ohm load
Number of Channels17 wide band, 40 narrow band
Sensitivity.6uV typical, 1 uV maximum for 12 dB SINAD
Frequency Accuracy± .005% stability +32 ºF to +122 ºF (0 ºC to +50 ºC)
Antenna TypeLA-123 90° Helical Antenna (72 MHz)
Antenna ConnectorBNC

+Power

Power Supply Input120 VAC, 60 Hz, 19 Watts
Power Supply Output15 VAC, 1 Amp
Power Supply Connector.02 in (5.0 mm) OD, .01 in. (2.5 mm) ID, barrel type
Optional Battery12VDC, connected via terminal block
Optional Battery ChargingTrickle charge of optional 12VDC battery through terminal block connection
Power Supply TypeIn line power supply, Listen part number LA-201

+Physical

ColorDark Grey with white silk screening
Unit Weight with Power Supply4.2 lbs. (1.9 kg)
Shipping Weight7.0 lbs. (3.2 kg)
Rack MountingOne (1) rack space height, 1/2 rack space wide, one (1) or two (2) receivers can be mounted in one rack space, optional rack mount (LA-326)
Dimensions (H x W x D)1.75 x 8.50 x 9.13 in. (4.5 x 21.5 x 23 cm)
Weight2.8 lbs. (1.3 kg)

+Environmental

Temperature - Operation-10 ºC (14 ºF) to +40 ºC (104 ºF)
Temperature - Storage-20 ºC (-4 ºF) to +50 ºC (122 ºF)
Relative Humidity0 to 95% Relative Humidity, non condensing

+Compliance

Power Supply ComplianceUL Listed
RFFCC Part 15, Part 90, Industry Canada

Accessories

Helical Top Mounted Antenna 72 MHz

Helical Top Mounted Antenna (72 MHz)

SKU: LA-101
Long, thin, black telescoping top mounted antenna

Telescoping Top Mounted Antenna (72 MHz)

SKU: LA-106
RG-58 50 Ohm Coaxial Cable measured and cut by the foot

RG-58 50 Ohm Coaxial Cable (500 ft)

SKU: LA-112-500
Photo of coaxial cable rolled up around a wooden case

RG-8 50 Ohm Low-Loss Coaxial Cable (500 ft)

SKU: LA-113-500
Product photo of coaxial cable rolled up with a remote antenna attached

Coaxial Dipole Remote Antenna (72 MHz)

SKU: LA-116
Universal RF Antenna for 72 MHz and 216 MHz

Universal Antenna Kit (72 and 216 MHz)

SKU: LA-122
A picture of a 90 Degree Helical Antenna (72 MHz)

90 Degree Helical Antenna (72 MHz)

SKU: LA-123
Remote Antenna (72MHz)

Antenna Kit for Rack Mount (72 MHz)

SKU: LA-125
Single LT-800 Configuration front Universal Rack Mounting Kit

Universal Rack Mounting Kit

SKU: LA-326
Coupler

BNC Coupler

SKU: LA-115

FAQs

+What is the function of SQ?

To reduce noise of the systems, Listen offers a noise reduction technology called ListenSQ™. 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.

+How many LR-100's can I use in a system?

As many as you need, the number is endless.

+Can I interface this to an amplifier or powered speaker?

Yes, both.

+Do I run the speakers in series or parallel?

It's your choice. However minimum impedance attached to LR-100 speaker amplifier must be greater than 4 ohms.