Listen Technologies LP-4VP-072-01 Assistive Listening DSP Value Package (72 MHz), Three Channels, Reliable Clear Sound Quality 62dB SNR, 600 ft. (182.88 m) Transmission RangeStart your assistive listening setup affordably with the LP-4VP-072 Assistive Listening DSP Value Package. Meeting the basic assistive listening needs for classrooms, theaters, business meetings, training sessions, and more, the LP-4VP-072 includes our LT-803 stationary transmitter, four LR-3200-072 receivers, a 90-degree helical antenna, earbuds, and a signage kit for full compliance in a basic system.Key FeaturesEconomical price - backed by Listen’s exceptional service and supportThree channels - makes it simple to install, manage and useReliable clear sound quality - 62 dB SNREnsures public venues meet ADA requirementsIncludes: (1) LT-803-072 Stationary 3-Channel RF Transmitter (72 MHz), (1) LA-123 90° Helical Antenna (72 MHz), (4) LR-3200-072 RF Receiver (72 MHz), (4) LA-161 Single Ear Bud, (1) LA-304 Assistive Listening Notification Signage Kit and (1) LA-423 4-Port USB ChargerSpecificationsFrequency Response: 50 Hz - 15 kHz (±3 dB)Signal-to-Noise Ratio: 62 dB (A Weighted)Distortion: 1% total harmonic distortion (THD) at 80% deviationNumber of Channels: Three (3) Wide Band - (A) 72.100, (E) 72.900, (H) 75.900Transmission Range: 600 ft. (182.88 m) (with LA-123 antenna)Temperature - Operation: -10ºC (14ºF) to +40ºC (104ºF)Temperature - Storage: -20ºC (-4ºF) to +50ºC (122ºF)Relative Humidity: 0 to 95% relative humidity, non-condensingDimensions (HxWxD): Box Dimensions: 18" x 12.25" x 3" (45.72 x 31.12 x 7.62 cm)Shipping Weight: 5.8 lbs. (2.6 kg)Standards: FCC Part 15 Class B, Industry Canada ICES-3 (B), RoHS