Williams Av Fm 557 Large Area Dual Fm Plus And Wi Fi Assistive Listening System With Fm T55 Transmitter, (4) Ppa R37N Receivers,

Williams Av Fm 557 Large-Area Dual Fm Plus And Wi-Fi Assistive Listening System With Fm T55 Transmitter, (4) Ppa R37N Receivers, (4) Ear 022 Earphones, (2) Nkl 001 Neckloops And Idp 008 Ada Wall Plaque Key Features - Includes: (1) Fm T55 Transmitter, (4) Ppa R37N Receivers, (4) Ear 022 Surround Earphones, (2) Nkl 001 Neckloops And (1) Idp 008 Ada Wall Plaque Specifications - Fm T55 Transmitter: - Operating Frequencies: 72.1-75.9Mhz , 17 Wideband Channels (Selectable) - Frequency Accuracy: 2 Ppm Stability - Deviation: 75Khz Maximum - Pre-Emphasis: 75 Microsec - Frequency Response: 31-16000Hz, 3 Db - Signal-To-Noise Ratio: 67Db Transmited Rf - Total Harmonic Distortion: Less Than 0.25% @ 1Khz (Rf Output) - Common Mode Rejection: 57Db @ 1Khz, Mic Or Line - Rack Mount: Standard 19'' Rack, One Eia Rack Space High, 1/2 Space Wide - Ethernet: Rj-45, 10/100 Base-T Ieee 802.3 Compliant, Unique Mac Address - Weight: 3.2 Lbs - Ppa R37N Receiver: - Channels: 17, Accessed Via Seek Button In Battery Compartment - Fm Deviation: 75Khz - De-Emphasis: 75S - Afc Range: 120Khz - Sensitivity: 2V At 12Db Sinad With Squelch Defeated - Input Overload: 100Mv - Frequency Response: 200-15Khz - Modulation: Fm, +/- 75Khz Peak Deviation - Signal-To-Noise Ratio: 65Db Min @ 100Uv - Receive Antenna: Integral With Earphone/Headphone Cord - Audio Output: 35 Mw, Peak Into 16 Ohms - Output Connector: 3.5Mm Stereo/Mono Phone Jack - Weight: 4.6Oz - Ear 022 Earphones: - Plug: 3.5Mm Mono - Driver Size: 23Mm - Nominal Impedance: 32O - Freq. Response: 20-20Khz - Max Power Input: 30Mw - Sensitivity: 118Db @ 1Khz - Weight: 15G