Listen Technologies LR-400-072
72MHz Portable Display RF Receiver

OUR PART #  LR400-072


Offering the same high-performance audio and convenient recharging features as our other receivers, the LR-400-072 Portable Display RF Receiver from Listen Technologies is an affordable option for establishing or expanding your assistive listening system. Capable of receiving up to 17 wide-band or 40 narrow-band channels, the LR-400-072 features a digital LCD display, channel seeking capabilities, and compatibility with mono or stereo headphones.

The LCD display provides each user with channel selection, battery level, and signal strength information, and an LED on the top of each receiver indicates power status and low battery conditions. Approved for assistive listening use in the U.S. by the FCC, the LR-400-072 Portable Display RF Receiver is a cost-effective way to provide assistive listening to your customers, clients, or patrons. 

Listen Technologies LR-400-072 Includes:

  • One (1) LR-400 Portable Display RF Receiver
  • One (1) Quick reference card  

Listen Technologies LR-400-072 Features:

  • Cost-effective solution to beginning or expanding your RF assistive listening system
  • Can receive up to 17 wide-band or 40 narrow-band channels
  • Easy-to-read LCD display with battery status, channel information, and signal strength readings
  • Channel seek capabilities
  • 80 dB signal-to-noise ratio for industry-leading sound quality
  • Built-in Smart Charge feature prevents overcharging
  • Simple drop-in charging compatible with Listen Technologies’ charging cases and plugs
  • Compatible with mono and stereo headphones
  • Limited lifetime warranty and hassle free support from Listen Technologies 

Listen Technologies LR-400-072 Specifications:

  • Audio:
    • Frequency Response: 50 Hz - 15 kHz (±3 dB)
    • Signal-to-Noise Ratio: SQ enabled 80 dB, SQ disabled 60 dB
    • Audio Output Jacks: 3.5 mm (0.14 in.) connectors, unbalanced, 0 dBu nominal output level, 16 mW maximum, impedance 32 ohm
    • Distortion: < 2% total harmonic distortion (THD) at 80%deviation
  • Controls:
    • User Controls: Channel up/down, SEEK, volume, Alkaline/NiMH batteries, SQ enable/disable
    • Programming: Channel lock, squelch
  • Indicators:
    • LCD: Channel designation, battery level, battery charging, RF signal strength and channel lock
    • LEDs: Red, illuminated when unit is on, flashes when batteries are low or to indicate charging, flashes when locked and SEEK is pushed
  • RF:
    • Frequency Range: 72.025 - 75.950 MHz
    • Number of Channels: 17 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)
    • Squelch: Programmable in 20 steps, automatic on loss of RF signal
    • Antenna Type: Uses earphone cable
  • Power:
    • Power Supply: I/P 120 VAC; O/P 7.5 VDC 250 mA, drop in contact points for use with charging cases, power supply not included (LA-208)
    • Power Supply Connector: 0.09 in. (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 cases
    • Battery Type: Two (2) AA batteries, alkaline or NiMH
    • Battery Life: 30 hours alkaline (LA-361), 15 hours NiMH rechargeable (LA-362)
    • Battery Charging Time: Fully automatic, 13 hours
    • Compliance: RoHS, WEEE, UL, PSE, CE, CUL, TUV, CB
  • Physical:
    • Width: 2.75 in. (7.0 cm)
    • Height: 4.25 in. (10.8 cm)
    • Length: 1.50 in. (3.8 cm)
    • Unit Weight with Batteries: 5.8 oz (164 g)
    • Shipping Weight: 1.0 lbs. (0.5 kg)
    • Weight: 3.9 oz (111 g)
    • Door: Manually lockable, SEEK/channel select behind the door
  • Environmental:
    • Temperature - Operation: 14 to 104 ºF (-10 to 40 ºC)
    • Temperature - Storage: -4 to 122 °F (-20 to 50 °C)
    • Relative Humidity: 0 to 95% relative humidity, non-condensing
  • Compliance:
    • Safety: RoHS
    • RF: FCC Part 15, Part 90, Industry Canada
16-Unit Drop In Charging/Carrying Case
Listen Technologies LA311 16-Unit Drop In Charging/Carrying Case
Charge (NiMH batteries required) and store up to 16 Listen receivers and/or portable transmitters in the LA-311 16-Unit Drop In Charging/Carrying Case. This hard case incorporates automatic drop in charging (no hookup of cables to ...
Neckloop for "T" coils
Listen Technologies LA-166 Neckloop for "T" coils
The Listen Technologies LA-166 is a deceptively simple looking loop that acts as a remote connection to hearing aids equipped with a "T" coil. Listeners hook the loop into their wireless receivers, slip the loop around their neck, and the ...
Stereo Headset
Listen Technologies LA165 Stereo Headset
Dual ear, over-the-head style earphones. Sound distributed to both earpieces. Ear cushions are replaceable. Cushions sold separately (LA167). Ear pieces can be coverd with disposable sanitary covers, sold separately (LA168).Features Dual ...
Single Earbud
Listen Technologies LA161 Single Earbud
The LA-161 Single Ear Bud is placed in one ear and secures by friction fit. The cable connects to Listen's LR-300, LR-400 or LR-500 receiver for low cost, unobtrusive listening. Easy to replace if lost or broken, replacement foam is also ...

5.0 / 5

★★★★★ Log In for price!

In Stock
16-Slot Charger (with Removable Lid)
Listen Technologies LA325 16-Slot Charger (with Removable Lid)
This drop-in charging case is designed to store and charge up to 16 portable Listen FM products (LT-700, LR-300, LR-400 or LR-500).  The case becomes a charging tray, thanks to its removable lid - simply drop the units in the case, ...

Usually ships in 7-14 business days.
Need it sooner? Call us!
8-Unit Drop In Charging/Carrying Case
Listen Technologies LA321 8-Unit Drop In Charging/Carrying Case
Charge (NiMH batteries required) and store up to 8 Listen receivers and/or portable transmitters in the LA-321 8-Unit Drop In Charging/Carrying Case. This hard case incorporates automatic drop-in charging (no hookup of cables to individual ...

Usually ships in 7-14 business days.
Need it sooner? Call us!
4-Unit Charging Case with Removable Lid
Listen Technologies LA323 4-Unit Charging Case with Removable Lid
This 4-unit drop-in charging case is designed to store and charge up to 4 portable Listen FM products (LT-700, LR-300, LR-400 or LR-500).  The case becomes a charging tray, thanks to its removable lid.  Simply drop the units in ...

Usually ships in 7-14 business days.
Need it sooner? Call us!
4-Unit Portable RF Product Charging/Carrying Case
Listen Technologies LA-317 4-Unit Portable RF Product Charging/Carrying Case
The Listen Technologies LA-317 is  4-unit drop-in charging case that is designed to store and charge up to 4 portable Listen RF products (LT-700, LR-200,LR-300, LR-400 or LR-500) Place units in the slots, connect a charging cable to ...

Usually ships in 7-14 business days.
Need it sooner? Call us!
16-Unit Carrying Case
Listen Technologies LA313 16-Unit Carrying Case
This carrying case is designed to store up to 16 portable Listen FM products (LT-700, LR-300, LR-400 or LR-500). In addition to slots for each unit, the case also has two large pockets to store earphones (prevents tangling) and other ...

Usually ships in 7-14 business days.
Need it sooner? Call us!
Configurable Carrying Case
Listen Technologies LA320 Configurable Carrying Case
This hard case features adjustable interior partitions, allowing you to store combinations of stationary transmitters, receivers, and accessories.  This sturdy locking case has durable latches and includes a shoulder strap ...

Usually ships in 7-14 business days.
Need it sooner? Call us!
8-Unit Carrying Case
Listen Technologies LA322 8-Unit Carrying Case
This carrying case is designed to store up to 8 portable Listen FM products (LT-700, LR-300, LR-400 or LR-500). In addition to slots for each unit, the case also has two large pockets to store earphones (prevents tangling) and other items. ...

Usually ships in 7-14 business days.
Need it sooner? Call us!
4-Unit Carrying Case
Listen Technologies LA318 4-Unit Carrying Case
This carrying case is designed to store up to 4 portable Listen FM products (LT-700, LR-300, LR-400 or LR-500). In addition to slots for each unit, the case also has two large pockets to store earphones (prevents tangling) and other items. ...

Usually ships in 7-14 business days.
Need it sooner? Call us!
Soft Case
Listen Technologies LA306 Soft Case
This durable nylon case is ideal for storing and transporting up to 3 portable units and their accompanying accessories. Includes shoulder strap and belt strap. The case secures with zipper and features a convenient handle.

Usually ships in 7-14 business days.
Need it sooner? Call us!
Protective Pouch for Body Packs
Listen Technologies LA319 Protective Pouch for Body Packs
Made of sturdy, protective nylon, this pouch is designed to be used with all Listen portable FM units. Controls, belt clip and connections are all easily accessible through openings, and a clear plastic window allows you to view LCD ...

Usually ships in 7-14 business days.
Need it sooner? Call us!
7.5 VDC Power/Charging Supply for RF Portable Products
Listen Technologies LA-208-01 7.5 VDC Power/Charging Supply for RF Portable Products
The LA-208-01 is a 7.5 VDC power supply from Listen Technologies can be used to charge Listen's portable products. This power supply has three different line cord configurations that can be selected by the user for their appropriate part ...

Usually ships in 7-14 business days.
Need it sooner? Call us!
AA Alkaline Batteries (2 pack)
Listen Technologies LA361 AA Alkaline Batteries (2 pack)
AA batteries that offer twice the life of standard alkaline batteries. Use when you don't want to worry about recharging batteries. Package of 2. Listen Technologies belt pack products require 2 batteries; the LR-600 requires 8 ...

Usually ships in 7-14 business days.
Need it sooner? Call us!

Listen Technologies LR-400-072
72MHz Portable Display RF Receiver

OUR PART #  LR400-072

Product Information:

Offering the same high-performance audio and convenient recharging features as our other receivers, the LR-400-072 Portable Display RF Receiver from Listen Technologies is an affordable option for establishing or expanding your assistive listening system. Capable of receiving up to 17 wide-band or 40 narrow-band channels, the LR-400-072 features a digital LCD display, channel seeking capabilities, and compatibility with mono or stereo headphones.

The LCD display provides each user with channel selection, battery level, and signal strength information, and an LED on the top of each receiver indicates power status and low battery conditions. Approved for assistive listening use in the U.S. by the FCC, the LR-400-072 Portable Display RF Receiver is a cost-effective way to provide assistive listening to your customers, clients, or patrons. 

Listen Technologies LR-400-072 Includes:

  • One (1) LR-400 Portable Display RF Receiver
  • One (1) Quick reference card  

Listen Technologies LR-400-072 Features:

  • Cost-effective solution to beginning or expanding your RF assistive listening system
  • Can receive up to 17 wide-band or 40 narrow-band channels
  • Easy-to-read LCD display with battery status, channel information, and signal strength readings
  • Channel seek capabilities
  • 80 dB signal-to-noise ratio for industry-leading sound quality
  • Built-in Smart Charge feature prevents overcharging
  • Simple drop-in charging compatible with Listen Technologies’ charging cases and plugs
  • Compatible with mono and stereo headphones
  • Limited lifetime warranty and hassle free support from Listen Technologies 

Listen Technologies LR-400-072 Specifications:

  • Audio:
    • Frequency Response: 50 Hz - 15 kHz (±3 dB)
    • Signal-to-Noise Ratio: SQ enabled 80 dB, SQ disabled 60 dB
    • Audio Output Jacks: 3.5 mm (0.14 in.) connectors, unbalanced, 0 dBu nominal output level, 16 mW maximum, impedance 32 ohm
    • Distortion: < 2% total harmonic distortion (THD) at 80%deviation
  • Controls:
    • User Controls: Channel up/down, SEEK, volume, Alkaline/NiMH batteries, SQ enable/disable
    • Programming: Channel lock, squelch
  • Indicators:
    • LCD: Channel designation, battery level, battery charging, RF signal strength and channel lock
    • LEDs: Red, illuminated when unit is on, flashes when batteries are low or to indicate charging, flashes when locked and SEEK is pushed
  • RF:
    • Frequency Range: 72.025 - 75.950 MHz
    • Number of Channels: 17 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)
    • Squelch: Programmable in 20 steps, automatic on loss of RF signal
    • Antenna Type: Uses earphone cable
  • Power:
    • Power Supply: I/P 120 VAC; O/P 7.5 VDC 250 mA, drop in contact points for use with charging cases, power supply not included (LA-208)
    • Power Supply Connector: 0.09 in. (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 cases
    • Battery Type: Two (2) AA batteries, alkaline or NiMH
    • Battery Life: 30 hours alkaline (LA-361), 15 hours NiMH rechargeable (LA-362)
    • Battery Charging Time: Fully automatic, 13 hours
    • Compliance: RoHS, WEEE, UL, PSE, CE, CUL, TUV, CB
  • Physical:
    • Width: 2.75 in. (7.0 cm)
    • Height: 4.25 in. (10.8 cm)
    • Length: 1.50 in. (3.8 cm)
    • Unit Weight with Batteries: 5.8 oz (164 g)
    • Shipping Weight: 1.0 lbs. (0.5 kg)
    • Weight: 3.9 oz (111 g)
    • Door: Manually lockable, SEEK/channel select behind the door
  • Environmental:
    • Temperature - Operation: 14 to 104 ºF (-10 to 40 ºC)
    • Temperature - Storage: -4 to 122 °F (-20 to 50 °C)
    • Relative Humidity: 0 to 95% relative humidity, non-condensing
  • Compliance:
    • Safety: RoHS
    • RF: FCC Part 15, Part 90, Industry Canada
16-Unit Drop In Charging/Carrying Case
Listen Technologies LA311 16-Unit Drop In Charging/Carrying Case
Charge (NiMH batteries required) and store up to 16 Listen receivers and/or portable transmitters in the LA-311 16-Unit Drop In Charging/Carrying Case. This hard case incorporates automatic drop in charging (no hookup of cables to ...
Neckloop for "T" coils
Listen Technologies LA-166 Neckloop for "T" coils
The Listen Technologies LA-166 is a deceptively simple looking loop that acts as a remote connection to hearing aids equipped with a "T" coil. Listeners hook the loop into their wireless receivers, slip the loop around their neck, and the ...
Stereo Headset
Listen Technologies LA165 Stereo Headset
Dual ear, over-the-head style earphones. Sound distributed to both earpieces. Ear cushions are replaceable. Cushions sold separately (LA167). Ear pieces can be coverd with disposable sanitary covers, sold separately (LA168).Features Dual ...
Single Earbud
Listen Technologies LA161 Single Earbud
The LA-161 Single Ear Bud is placed in one ear and secures by friction fit. The cable connects to Listen's LR-300, LR-400 or LR-500 receiver for low cost, unobtrusive listening. Easy to replace if lost or broken, replacement foam is also ...

5.0 / 5

★★★★★ Log In for price!

In Stock
16-Slot Charger (with Removable Lid)
Listen Technologies LA325 16-Slot Charger (with Removable Lid)
This drop-in charging case is designed to store and charge up to 16 portable Listen FM products (LT-700, LR-300, LR-400 or LR-500).  The case becomes a charging tray, thanks to its removable lid - simply drop the units in the case, ...

Usually ships in 7-14 business days.
Need it sooner? Call us!
8-Unit Drop In Charging/Carrying Case
Listen Technologies LA321 8-Unit Drop In Charging/Carrying Case
Charge (NiMH batteries required) and store up to 8 Listen receivers and/or portable transmitters in the LA-321 8-Unit Drop In Charging/Carrying Case. This hard case incorporates automatic drop-in charging (no hookup of cables to individual ...

Usually ships in 7-14 business days.
Need it sooner? Call us!
4-Unit Charging Case with Removable Lid
Listen Technologies LA323 4-Unit Charging Case with Removable Lid
This 4-unit drop-in charging case is designed to store and charge up to 4 portable Listen FM products (LT-700, LR-300, LR-400 or LR-500).  The case becomes a charging tray, thanks to its removable lid.  Simply drop the units in ...

Usually ships in 7-14 business days.
Need it sooner? Call us!
4-Unit Portable RF Product Charging/Carrying Case
Listen Technologies LA-317 4-Unit Portable RF Product Charging/Carrying Case
The Listen Technologies LA-317 is  4-unit drop-in charging case that is designed to store and charge up to 4 portable Listen RF products (LT-700, LR-200,LR-300, LR-400 or LR-500) Place units in the slots, connect a charging cable to ...

Usually ships in 7-14 business days.
Need it sooner? Call us!
16-Unit Carrying Case
Listen Technologies LA313 16-Unit Carrying Case
This carrying case is designed to store up to 16 portable Listen FM products (LT-700, LR-300, LR-400 or LR-500). In addition to slots for each unit, the case also has two large pockets to store earphones (prevents tangling) and other ...

Usually ships in 7-14 business days.
Need it sooner? Call us!
Configurable Carrying Case
Listen Technologies LA320 Configurable Carrying Case
This hard case features adjustable interior partitions, allowing you to store combinations of stationary transmitters, receivers, and accessories.  This sturdy locking case has durable latches and includes a shoulder strap ...

Usually ships in 7-14 business days.
Need it sooner? Call us!
8-Unit Carrying Case
Listen Technologies LA322 8-Unit Carrying Case
This carrying case is designed to store up to 8 portable Listen FM products (LT-700, LR-300, LR-400 or LR-500). In addition to slots for each unit, the case also has two large pockets to store earphones (prevents tangling) and other items. ...

Usually ships in 7-14 business days.
Need it sooner? Call us!
4-Unit Carrying Case
Listen Technologies LA318 4-Unit Carrying Case
This carrying case is designed to store up to 4 portable Listen FM products (LT-700, LR-300, LR-400 or LR-500). In addition to slots for each unit, the case also has two large pockets to store earphones (prevents tangling) and other items. ...

Usually ships in 7-14 business days.
Need it sooner? Call us!
Soft Case
Listen Technologies LA306 Soft Case
This durable nylon case is ideal for storing and transporting up to 3 portable units and their accompanying accessories. Includes shoulder strap and belt strap. The case secures with zipper and features a convenient handle.

Usually ships in 7-14 business days.
Need it sooner? Call us!
Protective Pouch for Body Packs
Listen Technologies LA319 Protective Pouch for Body Packs
Made of sturdy, protective nylon, this pouch is designed to be used with all Listen portable FM units. Controls, belt clip and connections are all easily accessible through openings, and a clear plastic window allows you to view LCD ...

Usually ships in 7-14 business days.
Need it sooner? Call us!
7.5 VDC Power/Charging Supply for RF Portable Products
Listen Technologies LA-208-01 7.5 VDC Power/Charging Supply for RF Portable Products
The LA-208-01 is a 7.5 VDC power supply from Listen Technologies can be used to charge Listen's portable products. This power supply has three different line cord configurations that can be selected by the user for their appropriate part ...

Usually ships in 7-14 business days.
Need it sooner? Call us!
AA Alkaline Batteries (2 pack)
Listen Technologies LA361 AA Alkaline Batteries (2 pack)
AA batteries that offer twice the life of standard alkaline batteries. Use when you don't want to worry about recharging batteries. Package of 2. Listen Technologies belt pack products require 2 batteries; the LR-600 requires 8 ...

Usually ships in 7-14 business days.
Need it sooner? Call us!
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