ListenRF 72 MHz receiver
Man smiling wearing an Intelligent DSP RF Receiver with a neckloop and earbud
Side view of the LR4200 72 MHz radio frequency receiver showing the 3.5 mm standard headset jack and the belt clip on the back
Back of the LR4200 iDSP 72 MHz receiver

Meeting House Receiver

Item:MH-4200-072 Price:$227.00MSRP

The MH-4200-072 receiver is an LR-4200-072 with customized programming that incorporates Listen Technologies’ new generation of personal listening products, iDSP or Intelligent Digital Signal Processing.

With Listen’s unique DSP audio processing technology, users experience crystal clear audio that is pleasing to any user, with or without hearing loss. Advanced green battery technology dramatically reduces costs of ownership and hassles while reducing the number of batteries in landfills. A field replaceable Lithium-ion battery is included with the unit. The integrated neck loop / lanyard with DSP loop driver, improves the listening experience for T-coil users. iDSP is the smallest device of its kind, making it easier to wear and easier for venues to dispense, store and maintain.

The MH-4200-072 has an OLED display to program channel names, monitor battery status, channel status, and charge activation. Connect the iDSP neck loop/lanyard or ear phones via two 3.5 mm output jacks (receivers can be shared).  The Micro USB connection is used for charging and with the iDSP software suite for programming changes, inventory management and firmware updates.

The result is an exceptional listening experience in your meeting house chapel.

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Includes

One (1) MH-4200-072 Meeting House Receiver (LR-4200-072 with customized settings)*
One (1) Quick Start Guide

*The MH-4200-072 comes with a non-proprietary, field replaceable Lithium-ion battery.

Highlights

  • Integrated neck loop / lanyard with DSP loop driver improves the listening experience for T-coil users
  • Smallest device of its kind makes it easier to wear and for venues to dispense, store and maintain
  • Can be worn around the neck, with the belt clip, or concealed in a pocket, making it the most discreet listening device on the market
  • Advanced green battery technology dramatically reduces costs of ownership and hassles while reducing the number of batteries in the landfill
  • Use for single channel applications

Also Needed

Product image of a single ear bud.

Single Ear Bud

SKU: LA-161
One earbud with standard headphone jack.

Ear Speaker

SKU: LA-164
A picture of Stereo Headphones.

Stereo Headphones

SKU: LA-165
A picture of Universal Ear Speaker.

Universal Ear Speaker

SKU: LA-401
A picture of Universal Stereo Headphones.

Universal Stereo Headphones

SKU: LA-402
A picture of Universal Behind-the-Head Stereo Headphones.

Universal Behind-the-Head Stereo Headphones

SKU: LA-403
Universal single ear bud with extension cord

Universal Single Ear Bud

SKU: LA-404
Aux cord shown with earbuds

Universal Stereo Ear Buds

SKU: LA-405
A picture of the Intelligent 12-Unit Charging Tray.

Intelligent 12-Unit Charging Tray

SKU: LA-381
A picture of an Intelligent 12-Unit Charging/Carrying Case.

Intelligent 12-Unit Charging/Carrying Case

SKU: LA-380
One port USB charger

1-Port USB Charger

SKU: LA-421
A picture of a 4-Port USB Charger

4-Port USB Charger

SKU: LA-423
A picture of an Intelligent Ear Phone/Neck Loop Lanyard.

Intelligent Ear Phone/Neck Loop Lanyard

SKU: LA-430

Specs

+Audio

System Distortion< 2% total harmonic distortion (THD) at 80% deviation
Output/sTwo (2) 3.5 mm (0.14 in.) connectors, unbalanced, 0 dBu nominal output level, 16 mW maximum, impedance 32 ohm
System Frequency Response50 Hz - 15 kHz (±3 dB)
System Signal to Noise RatioSQ enabled 80 dB, SQ disabled 60 dB

+Controls

User ControlsPower, up/down volume
ProgrammingVia software and USB port
Set-up ControlsPress and hold up/down volume buttons for 5 seconds to enter channel adjust, use up/down to select channel

+Indicators

LEDsFlashes when batteries are low or to indicate charging, solid when fully charged
DisplayChannel designation,battery level, unit number, charging status

+RF

Frequency Range72.0250 - 75.9500 MHz
Number of Channels17 wide band, 40 narrow band
Sensitivity.6uV typical, 1 uV maximum for 12 dB sinad
Frequency Accuracy± .005% stability 32 to 122 ºF (0 to 50 ºC)
SquelchProgrammable in 20 steps, automatic on loss of RF signal
Antenna TypeUses ear phone/neck loop lanyard and short ear phone cable or standard earphone cable

+Power

Power SupplyMicro USB connector, 5 V, 500 mA
Battery TypeLithium Ion 3.7 Vdc, 1200 mAh
Battery Life8 Hours of continuous use
Battery Charging TimeFully charged in 2.5 Hours

+Physical

ColorBlack
Unit Weight with Batteries2.40 oz. (68 g)
Shipping Weight3.20 oz. (91 g) with 1.0 lbs. (454 g) minimum
Dimensions (H x W x D)3.75 x 2.00 x 0.64 in. (9.6 x 5 x 1.7 cm)
Unit Weight1.60 oz. (45 g)
Dimensions with Belt Clip3.75 x 2.00 x 0.80 in. (9.6 x 5.0 x 2.1 cm)

+Environmental

Temperature - Operation14 to 104 ºF (-10 to 40 ºC)
Temperature - Storage(-)4 to 122 °F (-20 to 50 °C)
Relative Humidity0 to 95% relative humidity, non-condensing

+Compliance

StandardsFCC Part 15, Part 90, Industry Canada, RoHS

FAQs

+What is the difference between the LR-4200 and the LR-5200?

The main difference is that the LR-5200 is programmable with a multi-function Listen button. It gives the user an opportunity to program only the desired channels and lockout the unused channels. This makes it simple to operate for end users that need to select between multiple active channels. The Listen Button can also be used to search for an active channel and lock the receiver on a specific channel.

+What is the purpose of Squelch?

The purpose of squelch is to mute the audio output of your receiver when the signal from the transmitter is turned off or is too weak to be received. Without squelch you would hear radio noise in your earphone. The squelch function can be programmed to the desired setting.

+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.

+What type of battery technology does the LR-4200 use?

The LR-4200 uses a non-proprietary field replaceable Lithium Ion battery.

+How long does it take to fully charge the LR-4200?

It varies dependent on the depletion of the battery. A fully depleted battery will charge in 2.5 hours or less.

+How many LR-4200 receivers can I use in a system?

As many as you need, the number is endless.

+How long will the LR-4200 run on a fully charged battery?

The LR-4200 will run continuously for 8 hours on a fully charged battery