Nady U-81 Manual - Page 4

SYSTEM FEATURES U-81 OCTAVO Wireless Receiver • Operates on select UHF frequencies from 740MHz to 806MHz • Eight independent single-channel UHF wireless receivers in a single housing for simul- taneous operation for up to eight transmitters • Front panel LED display indicates the RF and AF status for each channel • Ch 1-8 individual balanced XLR MIC level outputs and Unbalanced LINE level SUM 1⁄4" jack output for 8-in-1 MIX audio output with separate volume control for each channel • Nady's exclusive patented companding circuitry with 120dB dynamic range and highest quality audio for an unsurpassed UHF performance • Dual removable high gain antennas with TNC connector, front or back mounting • Standard 19" 1U, all-metal rack mount housing • Externally powered with AC/DC adapter included • Choice of any combination of 2 transmitters: UH-81 and/or UB-81 UH-81 Handheld Microphone Transmitter • Nady DM-50D neodymium cartridge delivers transparent vocals, maximum feedback rejection and minimal handling noise • ON/STDBY/OFF switch allows convenient audio muting while transmitter "ON" • Status LED indicator flashes once for unit "ON"; lights steady for low battery alert • 2 X AA alkaline or NiMH battery operation • Rugged ABS and rubber-coated housing with integral antenna UB-81 Bodypack Transmitter • Choice of headworn or lavalier microphone operation with convenient input volume control for proper level adjust, or instrument operation without input level control • OFF/STDBY/ON switch allows convenient audio muting while transmitter "ON" • Status LED indicator flashes once for unit "ON"; lights steady for low battery alert • Single 9V alkaline or NiMH battery • Lightweight, rugged ABS housing with integral antenna SPECIFICATIONS OVERALL SYSTEM PERFORMANCE RF Carrier Frequencies Selected factory installed frequencies between 740MHz-806MHz Frequency stability 0.005% (Crystal Controlled) Audio Deviation FM +/-20kHz normal, +/-50kHz maximum Frequency Response 20Hz-20kHz, -3dB Dynamic Range ...120dB Harmonic Distortion 0.5% THD, normal Operating Range 250 feet normal, 500+feet max line of sight RECEIVER Reception Mono antenna reception Antennas 10" (25.4 cm) Dual adjustable angle Mute Threshold 95dBm (none-adjustable) Image Rejection ...-70dB, minimum Balanced output Audio outputs: +/-24mV variable level (600 Ohms) Unbalanced MIX output Audio output: 360mV variable level (Open load) Connectors Balanced: XLR, Unbalanced: 1⁄4" TS, Antennas: TNC connector. DC in: 2.1mm barrel type. Indicators Power On, RF and AF LEDs Controls Power ON/OFF buttons, Volume Controls Power Requirement 15VDC/1000mA Dimensions 14.25" x 12" x 1.75 [W / D / H] (36.20 cm x 30.50 cm x 4.45 cm) [W / D / H] Weight...7.20 lbs (3.37 Kg) TRANSMITTERS Models Available UH-81 Handheld and UB-81 Bodypack Input Connectors UH-81 Handheld Integral Nady DM-50D neodymium dynamic cartridge UB-81 Bodypack 3.5mm locking mini-jack, Controls UH-81...Power ON/STDBY/OFF UB-81.....ON/STDBY/OFF, Input Level Control (LT/HM), selectable inputs-GT/HM/LT switches RF Power 20mW normal (50mW Maximum allowed by FCC) Harmonics and Spurs ...< -50 dB Antennas UH-81/UB-81: Internal antennas LED Indicators UH-81/UB-81 Single LED flashes once for "ON", lights steady for "LOW BAT" Battery UH-81 2xAA Alkaline or NiMH batteries UB-81 Single 9V Alkaline or NiMH battery Battery Life...8-10 Hours (Alkaline) Dimensions UH-81 10.5"x 1.875" (26.7 cm x 4.8 cm) UB-81 4.25" x 2.5"x 1.0" (10.8 cm x 6.4 cm x 2.5 cm) Weight ...UH-81 7.5 oz (213 g) without battery UB-81 3.1 oz (88 g) without battery 4 13