Nady Systems UHF4LTSYS16, UHF4HTSYS13, UHF4HTSYS11, UHF4HTSYS16, UHF4 User Manual
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UHF-4
Single Channel UHF DigiTRU Diversity™
Wireless System
OWNER'S MANUAL
CONTENTS
CONTENTS ...........................................................................................2
INTRODUCTION ....................................................................................2
USING THIS MANUAL............................................................................2
SYSTEM FEATURES ................................................................................3
UHF-4 RECEIVER .................................................................................... 4
UH-4 HANDHELD MICROPHONE TRANSMITTER ......................................7
UB-4 BODYPACK MICROPHONE TRANSMITTER ......................................8
SPECIFICATIONS ................................................................................. 11
SERVICE ................................................................................. Back Cover
INTRODUCTION
Thank you for purchasing a Nady UHF-4 Diversity Wireless Microphone System and
congratulations on your choice. The UHF-4 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-4 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-4 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.
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SYSTEM FEATURES
UHF-4 RECEIVER
• Unprecedented value in a full-featured single-channel UHF wireless mic system
— with interference-free operation in any application or locale on select UHF
frequencies within separate bands 902-928 and 944-952 MHz
• Half-rack receiver design with folding front panel dual antennas and
unique snap-out panel locking tabs for single receiver or dual receiver (side-
by-side) optional rack mounting
• 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-4 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
UH-4 HANDHELD MIC 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 with the
transmitter “ON”
• Status LED indicator flashes once for unit "ON"; lights steady for
low battery alert
• Easily accessible input level adjust control for optimum sound
• 9V alkaline or NiMH battery operation —rubber mic clip available as option
UB-4 BODYPACK TRANSMITTER
• Choice of instrument or headworn/lavalier microphone bodypack transmitter
in a single unit
• OFF / STANDBY / ON switch allows convenient audio muting with the
transmitter “ON”
• Status LED indicator flashes once for unit "ON"; lights steady for
low battery alert
• Locking 3.5mm mini-jack provides secure connection for removable
microphone or instrument cable
• Easily accessible input level adjust control for optimum sound
• 9V alkaline or NiMH battery operation
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UHF-4 RECEIVER
1. Rackmounting the Receiver
There are 2 options available for rackmounting the UHF-4 receiver: singly or side-byside with another UHF-4 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-4 receivers, join the two receivers with the EJC-3 JOINING CLIP
(3) and attach the ERM-33 RACK EARS (4) as shown.
the receiver in a rack directly above an amplifier or other source of high heat –
this could degrade the performance of the UHF-4. Always ensure adequate
airflow and heat dissipation in any rack configuration.)
2. Powering the Receiver
Plug the 15V/0.3A 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. 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-4 receiver is supplied with FOLDING 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.
(Note: Do not mount
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 or B LEDs will only light when the 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 alternate 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.
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