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Nady U-81 OCTAVO HM-3

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Product Description

Nady Systems U-81 OCTAVO HM-3   ( Nady U81OCTAVOHM3 )

The Nady U-81 Octavo HM3 is a wireless microphone system that includes the U-81 Octavo Wireless Receiver, HM-3 Wireless Headworn Microphone, and the UB-81 Bodypack Transmitter.

The U-81 Octavo wireless system offers clear channel operation on the wide-open, uncluttered UHF band for interference-free performance in any application or locale. The Nady U-81 delivers 8 discrete channels on selected frequency bands from 740MHz to 764MHz. The Octavo HM3 system features Nady's proprietary companding and low noise circuit for an industry best 120dB dynamic range, and the clearest, most natural sound available in wireless today.


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
Front panel LED display indicates the RF and AF on 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

HM-3 Headworn Microphone

All head worn microphones are lightweight and designed for long comfortable wear
Omni-directional condenser elements provide exceptional audio with excellent transparency and gain before feedback.
Available with mini-XLR or 3.5 mm phone plug for wireless applications (and fits most standard wireless bodypack transmitters). Available in black only.
Require low voltage phantom power as supplied by most wireless bodypack transmitters

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


U-81 Octavo HM3 Wireless System

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

U-81 Octavo Wireless Receiver
Reception: Mono antenna reception
Antennae: 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 (W x D x H): 14.25" x 12" x 1.75 ", (36.20 cm x 30.50 cm x 4.45 cm)
Weight : 7.20 lbs (3.37 Kg)

UB-81 Bodypack :
Input Connectors: 3.5mm locking mini-jack,
Controls: 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: Internal antennas
LED Indicators: 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: 4.25" x 2.5"x 1.0" (10.8 cm x 6.4 cm x 2.5 cm)
Weight: UB-81: 3.1 oz (88 g) without battery

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