Nady Systems U-81 owner manual System Features, Specifications, Octavo Wireless Receiver

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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

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Contents Octavo Page Table of Contents Using this ManualOctavo Frequency Plan IntroductionSystem Features SpecificationsOctavo Wireless Receiver UH-81 Handheld Microphone TransmitterTips Octavo Receiver Operating InstructionsSignal Loss No AudioAudio Distorted or Unwanted Sound FeedbackUB-81 Bodypack MIC Transmitter UH-81 Transmitter Set UpUH-81 Handheld MIC Transmitter Microphone Use with either a lavalier or headworn mic UB-81 Transmitter Set UpInstrument Use Optional