This wireless handheld mic system from Nady is designed for all professional applications, the U-81-HT offer unsurpassed RF and audio, enhanced full-featured operation and rackmount convenience. The U-81 Octavo system delivers high-end performance at amazingly cost effective prices.

With this system you get 4 Handheld Microphones and 4 Body Packs with 4 Headsets & 4 Lavailer mics.

You can operate all of the 8 mics simultaneously.

Overall System Performance:
RF Carrier Frequencies: Selected factory installed frequencies between 906 + 951.600 Mhz 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)

the UH-81 Handheld Transmitter:
Input Connectors: Integral Nady DM-50D neodymium dynamic cartridge
Controls: Power ON/STDBY/OFF
RF Power: 20mW normal (50mW Maximum allowed by FCC)
Harmonics and Spurs: -50 dB
Antennas: Internal
LED Indicators: Single LED flashes once for "ON", lights steady for "LOW BAT"
Battery: 2xAA Alkaline or NiMH batteries
Battery Life: 8-10 Hours (Alkaline)
Dimensions: 10.5"x 1.875" (26.7 cm x 4.8 cm)
Weight: 7.5 oz (213 g) without battery

UB-81 Bodypack Transmitter:
Input Connectors: 3.5mm locking mini-jack,
Controls: ON/STDBY/OFF, Input Level Control, selectable inputs
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: 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: 3.1 oz (88 g) without battery
Nady U-81 Octavo 4HT/4LT Handheld and Body Pack System Features:

U-81 OCTAVO Wireless Receiver

Operates on select UHF frequencies from 906 + 951.600 Mhz

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

UH-81 Handheld Transmitter

Features the Nady DM -10D unidirectional neodymium dynamic cartridge for optimum true sound, maximum feedback rejection and minimal handling noise
OFF/STANDBY/ON 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

LM-14/O Lavalier Microphone

Unobtrusive design
Omnidirection pickup pattern for mobility
For use with bodypack transmitters
3.5 mm locking adapter