User Manual for Listen Technologies Portable Programmable Display RF Receiver Click to enlarge the picture
Contents of the user manual for the Listen Technologies Portable Programmable Display RF
- Product category: Components & Accessories Listen Technologies
- Brand: Listen Technologies
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for Listen Technologies Components & Accessories
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User manual for the Listen Technologies Portable Programmable Display RF contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Listen Technologies product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Listen Technologies user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Listen Technologies product will considerably shorten its lifespan!
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Product description The Portable Programmable Display RF Receiver from Listen Technologies is a 72 MHz receiver. It can receive up to 57 channels and has a Look & Listen LCD Display 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 compatible with mono or stereo headsets. It takes AA batteries (alkaline or NiMH rechargeable). SmartCharge capabilities prevent overcharging. - 80 dB signal-to-noise ratio (SNR)
- Unneeded channels can be locked so this receiver will access only one or more channels of your choice
- Receiver is digitally-tuned so the transmission won't drift
- Uses standard alkaline or nickel-metal hydride (NiMH) batteries
- Built in SmartCharge won't allow batteries to overcharge
- Transformer charging plug
UPC: 819267022317 In the Box Listen Technologies Portable Programmable Display RF Receiver (72 MHz) Limited Lifetime Warranty Table of Contents
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Technical parametersListen Technologies LR-500-072 Specs | | | RF Frequency Range | 72.025 to 75.95 MHz | | Number of Channels | 17 wide band, 40 narrow band | | Sensitivity | 0.6 uV typical, 1 uV maximum for 12 dB SINAD | | Frequency Accuracy | ± .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: 80dB; SQ disabled 60dB | | System Distortion | <2% total harmonic distortion (THD) at 80% deviation | | Audio Output Jack | 3.5 mm connectors, 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 | I/P 120 VAC, O/P 7.5 VDC 250 mA, drop in contact points for use with charging cases | | Power Supply Connector | 0.09 OD by 0.02" ID (2.3 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 | | Compliance | RoHS, WEEE, UL, PSE, CE, CUL, TUV, CB compliant | | | | 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 | 0.4 lb | | Box Dimensions (LxWxH) | 6.0 x 4.5 x 2.1" |
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