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Description
Listen Technologies LR-500-072 Overview
The LR-500-72 Portable Programmable Display RF Receiver from Listen Technologies is a 72 MHz digital audio receiver for use with assistive listening systems. The unit works with the LT-700 and LT-800 transmitters and can supply audio to mono or stereo headphones (headphones and transmitters available separately).
This multichannel receiver has a Look & Listen LCD screen that shows programming status, channel, lock, battery level, and RF signal strength. Channel selector buttons are located on the front of the unit. It has channel seek capability and is powered by AA batteries. The LR-500 will run for up to 30 hours on alkaline batteries and 15 hours on NiMH rechargeable batteries.
Listen Technologies LR-500-072 Specs
| RF Frequency Range | 72.025 to 75.95 MHz |
| Number of Channels | 17 Wideband, 40 Narrowband |
| Sensitivity | 0.6 uV Typical, 1 uV Maximum for 12 dB SINAD |
| Frequency Accuracy | ±0.005% Stability (32 to 122°F / 0 to 50°C) |
| Antenna Type | Uses Earphone Cable |
| Squelch | Programmable in 20 Steps, Automatic on Loss of RF Signal |
| Frequency Response | System: 50 Hz to 15 kHz (±3 dB) |
| Signal to Noise Ratio | SQ Enabled: 80 dB SQ Disabled: 60 dB |
| System Distortion | <2% Total Harmonic Distortion (THD) at 80% Deviation |
| Audio Output Jack | 3.5 mm Female, Unbalanced, 0 dBu Nominal Output Level, 16 mW Maximum, 32 Ohms |
| User Controls | Channel Up/Down, SEEK, Volume, SQ Enable/Disable |
| Programming | Channel Lock, Squelch, Channel Lock Out |
| LEDs | Red, Illuminated When Unit Is On, Flashes When Batteries Are Low or to Indicate Charging, Flashes When Locked and SEEK Is Pushed |
| LCD | Channel Designation, Lock Status, Signal Strength Indication, Programming |
| Battery Type | 2 x AA Batteries, Alkaline or NiMH |
| Battery Life | 30 Hours Alkaline, 15 Hours NiMH Rechargeable |
| Battery Charging Time | Fully Automatic, 13 Hours |
| Power Supply | Input: 120 VAC Output: 7.5 VDC, 250 mA Drop-In Contact Points For Use With Charging Cases |
| Power Supply Connector | OD x ID: 0.09 x 0.02" / 2.3 x 0.7 mm Barrel Type Connector 7.5 VDC Center Positive <250 mA Drop-In Contact Points For Use With Listen Charging Cases |
| Compliance | RoHS, WEEE, UL, PSE, CE, CUL, TUV, CB |
| Operation Temperature | 14 to 104°F (-10 to 40°C) |
| Storage Temperature | -4 to 122°F (-20 to 50°C) |
| Humidity (Non-Condensing) | 0 to 95% Relative Humidity |
| RF | FCC Part 15, Industry Canada |
| Color | Dark Gray with White Silk Screening |
| Doors | Manually Lockable, Up, Down, and Power Buttons Through Door, and Other Controls Behind Door |
| Dimensions | 3 x 5 x 1" / 7.6 x 13 x 2.5 cm |
| Weight | Unit: 3.9 oz / 111 g Unit with Batteries: 5.8 oz / 164 g |
| Package Weight | 0.415 lb |
| Box Dimensions (LxWxH) | 6.05 x 4.4 x 2.05" |
Listen Technologies LR-500-072 Reviews
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Bulk Discount
| Quantity | Price |
| 2 | ₹ 17292.1 |
| 3-5 | ₹ 17115.65 |
| 5-10 | ₹ 16762.75 |
| 10+ | ₹ 16409.85 |
Bulk discount will be automatically applied during checkout based on quantity.