Listen Technologies LR-300 - Manual (Page 46)

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LR-300 Specifications
LR-300 Specifications
Architectural Specifications
The FM receiver shall be capable of receiving on 17 wide band channels and have a SNR of 80dB or greater. The
receiver shall be capable of seeking channels. The device shall have a squelch. The device shall have an audio frequen-
cy response of 63Hz to 15KHz, ± 3dB at 72MHz. The device shall incorporate a stereo headset jack that allows the user
to plug in either a mono or stereo headset and listen to audio normally. The receiver shall incorporate automatic battery
charging circuitry for recharging of NiMH batteries. The Listen LR-300 is specified.
Specifications
Specification LR-300-072
RF Frequency Range 72.025 - 75.950 MHz
Number of Channels 17 (wide band)
Sensitivity .6uV typical, 1 uV maximum for 12dB SINAD
Frequency Accuracy ± .005% stability 0° to 50°C (32° to 122° F)
Antenna Uses earphone cable
Antenna Connector 3.5mm connector
Squelch Automatic on loss of RF signal
Compliance FCC Part 15, Industry Canada
System Frequency Response 63Hz - 15kHz (±3dB)
System Signal to Noise Ratio
(A-weighted)
SQ enabled: 80dB; SQ disabled 60dB
System Distortion <2% total harmonic distortion (THD) at 80% deviation
Output
3.5mm connectors, unbalanced, 0dBu nominal output level,
16mW maximum, impedence 32 Ohms
Set Up Controls Alkaline/NiMH batteries, SQ enable/disable
User Controls Volume, SEEK (Channel SEEK is electronically lockable)
Programming
Channel selection can be locked by holding the
SEEK button for 5 seconds.
RF
** All system specifications are wireless end-to-end
Audio
Controls