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UHF-3

Single Channel UHF DigiTRU Diversity

Wireless System

CONTENTS

 

CONTENTS ...........................................................................................

2

INTRODUCTION ....................................................................................

2

USING THIS MANUAL ............................................................................

2

SYSTEM FEATURES ................................................................................

3

UHF-3 RECEIVER ....................................................................................

4

UH-3 HANDHELD MICROPHONE TRANSMITTER ......................................

7

UB-3 BODYPACK MICROPHONE TRANSMITTER ......................................

8

SPECIFICATIONS .................................................................................

11

SERVICE .................................................................................

Back Cover

INTRODUCTION

Thank you for purchasing a Nady UHF-3 Diversity Wireless Microphone System and congratulations on your choice. The UHF-3 is loaded with top professional operating features and is the best performance and price value available in UHF diversity wireless systems.

USING THIS MANUAL

This booklet gives instructions for the operation of the UHF-3 wireless, including handheld, instrument, lavalier, headmic and plug-in transmitter systems. Please read the instructions for your system completely before operating unit.

This manual will first list the features of the UHF-3 and then will take you step by step to show you how to operate your new system. After reading the receiver instructions, turn to the section of the booklet that covers the type of transmitter used with your new system. Each section will give you detailed operating instructions. Also included in this manual are system specifications and servicing information.

SYSTEM FEATURES

UHF-3 RECEIVER

Half-rack receiver design with retractable front panel dual antennas

Clear channel operation on the wide open, uncluttered UHF band for interference-free performance in any application or locale

Nady’s proprietary companding circuitry for an industry best 120dB Dynamic Range, and the clearest, most natural sound available

Tone Squelch™ for locking out potential interference

UHF-3 receiver with DigiTRU Diversity™ for maximum range and dropout protection, full LED indicators, both 1/4" unbalanced and XLR balanced outputs, and special circuitry for noiseless transmitter ON/OFF switching

Mute (squelch) adjust control

Externally powered by AC/DC power adapter

Unique snap-out panel locking tabs for single receiver or dual receiver (side-by-side) optional rack mounting

UH-3 HANDHELD MIC TRANSMITTER

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

Audio mute switch allows convenient audio muting with the transmitter "ON"

Status LED indicator flashes once for unit "ON"; lights steady for low battery alert

Convenient, economical operation with two AA Alkaline or NiMH batteries

UB-3 BODYPACK TRANSMITTERS

Choice of instrument or headworn/lavalier microphone bodypack transmitter

Audio mute switch allows convenient audio muting with the transmitter "ON"

Bicolor LED status indicator: Unit “ON” (green), Low Battery Alert (orange)

Locking 3.5mm mini-jack provides secure connection for removable microphone or instrument cable

Easily accessible input level adjust control for optimum sound

Convenient, economical operation with two AAA Alkaline batteries

 

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UHF-3 RECEIVER

1. Rackmounting the Receiver

There are 2 options available for rackmounting the UHF-3 receiver: singly or side-by- side with another UHF-3 Series receiver.

a.Single mounting: Remove the receiver SIDE MOUNT CLIP (1) from each side of the receiver (as shown) and slide in the optional ERM-3 RACK EARS (2).

b.Side-by-side double mounting: After removing the SIDE MOUNT CLIPS (1) from both UHF-3 receivers, join the two receivers with the EJC-3 JOINING CLIP

(3) and attach the ERM-33 RACK EARS (4) as shown. (Note: Do not mount

the receiver in a rack directly above an amplifier or other source of high heat – this could degrade the performance of the UHF-3. Always ensure adequate airflow and heat dissipation in any rack configuration.)

2. Powering the Receiver

Plug the 12V AC/DC ADAPTER (5) provided into the DC INPUT JACK (9) on the back of the receiver. Then plug the power supply into an AC outlet. (Note: Any 12V DC source with 400mA capability can also be used.) Press the POWER SWITCH (11) once to turn on the receiver. The POWER ON LED (12) will now light and the receiver is operational.

3. Antennas

The UHF-3 receiver is supplied with TELESCOPIC ANTENNAS (15). These should be extended fully to obtain maximum range. Optimal antenna position is 45 degrees from the receiver (at 90 degrees from each other). For maximum range, it is always best to maintain a line of sight (no obstructions) between the receiver antennas and the transmitter at all times whenever possible.

4. Mute (Squelch) Adjustment

In normal operation, the SQUELCH CONTROL (6) should be set fully clockwise to the factory preset RF level (Max. Sens.). However, in areas of high RF activity, the squelch (or mute, as it is sometimes called) may need to be adjusted to compensate for the adverse conditions in a particular location. If, with the transmitter off, the receiver’s A and/or B DIVERSITY LED INDICATORS (13) flicker or stay on, the squelch control should be turned counterclockwise until the A and/or B LEDs extinguish. When the squelch is properly adjusted, the A and/or B LEDs will only light when the system transmitter is turned on. Turning the squelch control too far counterclockwise will reduce the range, but yield a quieter squelch (mute) function. During operation, especially at ranges greater than 75 feet, one or the other of the A or B LEDs may extinguish briefly. This is normal–the unit’s DigiTRU Diversity™ reception ensures that the received audio will not be interrupted. When both LEDs extinguish, the transmitter is out of range for that given location, and the user should move closer to the receiver to re-establish the radio link.

5. Connecting the Audio Output

The UHF-3 receiver provides both a fixed mic level BALANCED MIC AUDIO OUTPUT XLR (7) and an adjustable line level AUX AUDIO OUTPUT 1/4" jack (10).

(Note: As when making any connection, make sure the amplifier or mixing board volume is at the minimum level before plugging in the receiver to avoid possible sound system damage.)

Microphone Connection

(using the UB-3 transmitter with either a headworn or lavalier microphone or the UH-3 handheld microphone transmitter) For microphone use, either the BALANCED MIC AUDIO OUTPUT XLR (7) or the 1/4" line level AUX AUDIO OUTPUT (10) can be used. The XLR output is set at a non-adjustable microphone level, similar to hardwired mic levels. Plug an XLR connector into the XLR output socket on the rear of the unit and plug the other end into your amplifier or mixing board. Make sure the phantom power on your mixing board is turned off and the volume is turned down when making connections. For your convenience, the XLR output level is preset at the factory and is not adjustable with the receiver volume control.

To use the 1/4" AUX AUDIO OUTPUT socket, follow the instructions for the Instrument Connection (above), except start the receiver volume at 1/2 MAX and adjust until the volume level is optimal. If the volume control is set too high, you may overload your mixer or amp.

The UHF-3 receiver is equipped with a 5 segment LED AF LEVEL DISPLAY (14). Occasional flickering of the top AF Peak LED indicator on loud inputs to the transmitter is normal. If this LED lights continuously, decrease the volume to the transmitter or overload distortion may result.

 

 

 

 

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UH-3 HANDHELD MICROPHONE TRANSMITTER

Unscrew the BATTERY COMPARTMENT COVER (16) and remove, exposing the

BATTERY HOLDER (17). Insert 2 fresh AA ALKALINE BATTERIES (18), observing the correct polarity as marked, and screw the cover back on to the microphone. Make sure the cover is screwed on completely. Fresh alkaline batteries can last up to 10 hours in use, but in order to ensure optimum performance, it is recommended that you replace the batteries after every 7-8 hours of use.

Turn on the UH-3 by sliding the audio MUTE SWITCH (19) to the OFF position first. Then slide the POWER SWITCH (21) to the ON position. The TX LED indicator (22) will stay on. The battery indicator LED (20) will give a single quick flash, indicating usable battery strength. In the case of a dead or low battery, the LED will either not go on at all or will stay on continuously, indicating that the batteries should be replaced with fresh ones. To preserve battery life, turn the transmitter off when not in use.

The microphone is now ready to use. The A and/or B DIVERSITY LED INDICATORS (13) on the UHF-3 receiver should now be lit, indicating a received signal from the transmitter. When ready to speak, slide the audio MUTE SWITCH (19) to the ON position. Adjust the volume of the receiver as per the Audio Output Microphone Connection section of the above UHF-3 receiver instructions.

[Note: Observe care in selecting P.A. volume, transmitter location and speaker placement so that acoustic feedback (howling or screeching) will be avoided.]

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22 19 20

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UB-3 BODYPACK MICROPHONE TRANSMITTER

1.Open the hinged BATTERY DOOR (23) and insert 2 fresh AAA ALKALINE BATTERIES into the BATTERY COMPARTMENT (24), observing the correct polarity. Fresh alkaline batteries can last up to 5 hours in use, but in order to ensure optimum performance, it is recommended that the batteries be replaced after 3-4 hours of use.

2.The UB-3 is equipped with an INPUT SELECTOR SWITCH (32) located under the cover for selecting the type of audio input you will be supplying to the transmitter. Select from the choice of three positions: INSTRUMENT (for guitar, bass, etc.)/ HEADWORN MIC/ LAVALIER MIC.

3.The UB-3 is provided with a 3.5 mm LOCKING JACK (26) for connecting the audio input selected. Connect either the INSTRUMENT CORD (34) or the HEADWORN MIC

(35)or LAVALIER MIC CORD (36) as desired, according to the input selected. (Note: Use only the input audio source as per the input selected with the AUDIO INPUT SELECTOR SWITCH or the audio will not be optimal–a muddy or distorted sound may result.) To secure the connection, turn the slip ring on the plug clock wise to thread

it on the jack. To unplug, reverse the process. Slip the transmitter into a pocket or CLIP

(33)it on to your clothes or instrument strap (if using the UB-3 as an instrument transmitter).

4.Turn on the UB-3 by sliding the audio MUTE SWITCH (27) to the ON position first. Then slide the POWER SWITCH (29) to the ON position. The battery indicator LED

(28)will give a single quick flash, indicating usable battery strength. In the case of dead or low batteries, the LED will either not go on at all or will stay on continuously, indicating that the batteries should be replaced with fresh ones. To preserve battery life, turn the transmitter off when not in use. The A AND/OR B DIVERSITY LED INDICATORS (13) on the UHF-3 receiver should now be lit, indicating a received signal from the transmitter.

5.Instrument Use

Secure the connection from the GT CABLE (34) by turning the slip ring on the plug into the transmitter clockwise to thread it on the jack. To unplug, reverse the process. Plug the 1/4” phone plug into the instrument. When ready to play, slide the audio MUTE SWITCH (27) to OFF position Adjust the volume of the receiver as per the Audio Output Instrument Connection section of the above UHF-3 receiver instruction.

(Note: The INPUT LEVEL CONTROL (25) is deactivated and not used when the UB-3 is in INSTRUMENT mode. Levels should be adjusted with the volume control of your instrument.)

The UHF-3 receiver is equipped with a 5 segment LED AF LEVEL DISPLAY (14). Occasional flickering of the top AF Peak LED indicator on loud inputs to the transmitter is normal. If this LED lights continuously, turn down the INPUT LEVEL CONTROL (25) on the UB-3 transmitter, or noticeable distortion may result.

(Note: Scratchy noises can sometimes occur when some electric guitars with dirty pots or connections are used with any wireless system. Therefore, the supplied INSTRUMENT CORD (34) has a factory installed capacitor inside the 1/4" plug. This capacitor provides first order filtering of the RF signal from the cord into the guitar and eliminates virtually all scratchy noises. Should your equipment still give you scratchy noises, we suggest these steps to eliminate them:

1)Make sure all guitar volume and tone pots are clean and all contacts are solid–this is very important.

2)A 47pf capacitor soldered across the hot to ground terminals of the guitar’s volume and tone pots will provide extra filtering.)

6. Microphone Use (with either a lavalier or headworn microphone)

Secure the connection from the LAVALIER (36) or HEADWORN MIC CORD (35) by turning the slip ring on the plug into the transmitter clockwise to thread it on to the jack. To unplug, reverse the process. To use the lavalier mic, attach it at chest level. Do not place it too close to the mouth–a distance of about six inches usually works best. To use the headworn mic, place it on the head and adjust the boom so that the mic is about one inch to the side of the front of the mouth. As the microphone cord also serves as the antenna, be sure to extend it fully. Rolling up or shortening the cord may reduce the effective operating range–keep it as straight as possible. When ready to speak, slide the audio MUTE SWITCH (27) to the ON position. Adjust the volume of the receiver as per the Audio Output Microphone Connection section of the above UHF-3 receiver instruction

[Note: Observe care in selecting P.A. volume, transmitter location and speaker placement so that acoustic feedback (howling and screeching) will be avoided. Please also note the pickup pattern characteristics of the microphone selected. Omnidirectional mics pick up sound equally from all directions, and are prone to feedback if not used carefully. Unidirectional mics are more resistant to feedback, but pick up sound sources best that are directly in front of the mic. Also, mics that are farther from the sound source, such as lavaliers, require more acoustic gain and thus are also more prone to feedback than close-source mics such as handheld or headworn models that are used close to the mouth].

For optimum performance, an INPUT LEVEL CONTROL (25) is provided. Adjust the gain by turning the control with a small screw driver. For lavalier mic use, it is recommended that the level be set at about 2/3 maximum. For headworn mic use, it may be advisable to turn the gain down somewhat, depending on the volume levels expected. In either application, experiment and set for maximum possible gain without audible distortion on the high level peaks. (Note: Turning down the gain too much can compromise the signal-to-noise and is not recommended.)

The UHF-3 receiver is equipped with a 5 segment LED AF LEVEL DISPLAY (14). Occasional flickering of the top AF Peak LED indicator on loud inputs to the transmitter is normal. If this LED lights continuously, but if the LED stays lit continuously, turn down the INPUT LEVEL CONTROL (25) on the UB-3 transmitter, or noticeable distortion may result.

 

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SPECIFICATIONS

 

UHF-3 OVERALL SYSTEM PERFORMANCE

Frequency Response

30 Hz - 18 KHz, +/– 3 dB

Dynamic Range

120 dB

Total Harmonic Distortion

< 0.6%

 

RF Carrier Frequency Range

UHF, choice of single frequencies from 470-500 MHz

Frequency Stability

+/- 0.005%, crystal controlled

Modulation

FM (F3E), +/-20KHz normal

Operating Range

Up to 250 ft. typical (depending on site conditions); up to

 

500+ feet optimum line-of-sight

RECEIVER

 

 

Reception Mode

DigiTRU Diversity™ (Dual Antenna)

Squelch

External Control, Tone Key (30.720 KHz)

Controls

Power ON/OFF, Volume Control, Squelch (Mute) Adjust

Connectors

DC in, 1/4”(6.3 mm) unbalanced phone jack (360 mV/

 

no load), XLR balanced output (+/-24 mV/600 Ohm load)

LED Indicators

Power ON, Diversity A/B, Audio Peak

Unwanted Signal Rejection

60dB image and spurious

Power Requirements

DC 18V @ 250 mA, AC/DC adapter included

Dimensions (Max.)

1.75" x 7.5" x 8.1" (4.4 x 19 x 20.7 cm)

Weight

1.6 lbs (.73 kg)

Antenna

11.2" (28.5 cm), dual telescopic

TRANSMITTERS

 

 

Audio Inputs

UB-3 Bodypack: 3.5mm locking mini-jack, 3-way select

 

switch for inputs: instrument, headworn mic,

 

or lavalier mic

 

UH-3 Handheld: Integral Nady DM-10D neodymium

 

dynamic cartridge

Controls

UB-3: POWER/MUTE ON/OFF, INSTRUMENT/

 

HEADWORN MIC/LAV MIC, INPUT LEVEL

 

UH-3: POWER/MUTE ON/OFF

LED Indicator

UB-3: Bicolor, Unit “ON” (green), Low Battery

 

Alert (orange)

 

UH-3: Unit “ON” (single flash), Low Battery Alert (steady)

RF Power Out

50mW nominal (maximum allowed by FCC)

Harmonic & Spurious Emissions

< –50 dB

Battery

UH-3: AA Alkaline (2x) UB-3: AAA Alkaline (2x)

Battery Life

UH-3: 8-10 Hours (150mA draw typical) UB-3: 4-5 Hours

Dimensions

UB-3 Bodypack: 3.25” x 2.187”x 1”

 

(8.25 cm x 5.53 cm x 2.54 cm)

 

UH-3 Handheld: 2”x 9”

 

(5.08 cm x 22.86 cm)

Weight

UB-3 Bodypack: 2.25 oz (0.064 kg) without battery

 

UH-3 Handheld: 10.15 oz (0.28 kg) without battery

 

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SERVICE

(U.S.) Should your Nady Wireless Microphone System require service, please contact the Nady Service Department via telephone at (510) 652-2411 or e-mail to service@nady.com for a Return Authorization (R/A) Number and a service quote (if out of warranty). Make sure the R/A Number is clearly marked on the outside of the package and enclose a cashier's check or money order (if not prepaid with a credit card). Ship the unit prepaid to: Nady Systems, Inc., Service Department, 6701 Shellmound Street, Emeryville, CA 94608. Include a brief description of the problems you are experiencing.

The warranty card enclosed with this system contains additional valuable warranty and service information. Keep it in a safe place for future possible reference. Do not attempt to service this unit yourself as it will void the warranty.

(International) For service, please contact the Nady distributor in your country through the dealer from whom you purchased this product.

Nady Wireless Systems are type accepted under FCC rules parts 90, 74 and 15. The device complies with RSS-210 of Industry & Science Canada. Operation is subject to the following two conditions: (1) this device may not cause harmful interference and (2) this device must accept any interference received, including interference that may cause undesired operation.

NADY SYSTEMS, INC.

6701 Shellmound Street • Emeryville, CA 94608 USA Tel: 510/652-2411 • Fax: 510/652-5075 www.nady.com