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5
SPECIFICATIONS
OVERALL SYSTEM SPECIFICATIONS
Frequency Response
.............................................................................................
20Hz-20kHz, -3dB
Dynamic Range
.........................................................................................................................
120dB
Harmonic Distortion
.............................................................................................
<0.5% THD, normal
RF Carrier Frequencies
...................................................Operates on select UHF frequencies within
separate bands 902-928 and 944-952 MHz
Frequency stability
...............................................................................
+/-0.005% Crystal Controlled
Modulation
.........................................................................
FM +/-20kHz normal, +/-50kHz maximum
TSQ Frequency
..................................................................................................................
32.768kHz
Operating Range
.............................................................
250 feet normal, 500+feet max line of sight
RECEIVER SPECIFICATIONS
Controls
....................................................................
Power ON/OFF buttons, Volume/Mute Controls
Audio Output Level
....................................................
Unbalanced Sum output: 360mV variable level
Balanced output; +/-24mV fi xed level
Connectors
......................................
Balanced: XLR. Unbalanced: 1⁄4” TS DC in: 2.1mm barrel type
Indicators
.............................................................................
Power On, TX and AF LED Bars + Peak
Mute Threshold
..................................................................................
-65dBm to -95dBm (adjustable)
Image Rejection
........................................................................................................
-70dB, minimum
Power Requirement
.........................................................................................................
15VDC/0.4A
Antennas
.............................................................................
4.0” (10.2 cm) Dual telescopic antennas
Dimensions
........................
8.2” x 5.5” x 1.75 [W / D / H] (20.83 cm x 14.0 cm x 4.45 cm) [W / D / H]
Weight
...................................................................................................................
1.17 lbs (0.530 Kg)
TRANSMITTER SPECIFICATIONS
Models Available
.....................
UH-4 Handheld, UB-4 Bodypack, and LINK 4 SNAP-ON transmitters
RF Output Power
.................
RF Output Power .................RF Output Power
+14dBm (25mW normal), +17dBm (50mW maximum allowed by FCC)
Harmonic/spurious
.......................................................................................................
-50dBc normal
Antenna Type
.....................................................
UH-4:
Integral.
UB-4:
External permanent attached
LINK 4:
Integral into hardwire Mic
Controls
...................................
Transmitter ON/Mute/OFF switch, Audio Input level control (LT/HM),
Phantom Power On/Off (LINK 4)
Audio Input Levels
....
UH-4:
24mV.
LINK 4:
24mV,
UB-4:
225mV (Instr.), 310mV (HM), 75mV (Lav.)
Impedance
...................................
UH-4:
3.3kΩ.
LINK 4:
360Ω,
UB-4:
500kΩ (Instr.), 2kΩ (HM/Lav.)
Connector
....................................
UB-4:
3.5mm locking jack,
LINK 4:
XLR with 9V Phantom power
Indicator
..................................................................................................................
Indicator ..................................................................................................................Indicator
Low Battery LEDs
Battery Type
................................................................................
9V alkaline or rechargeable battery
Battery Life
............................................................................................................
8-10 Hours normal
Dimensions
..............................................................
UH-4:
9.5” x 2.0” [L / Dia.] (24.13 cm x 5.08 cm)
UB-4:
2.5” x 4.25” x 1.0 [W / D / H] (6.35 cm x 10.80 cm x 2.45 cm)
LINK-4:
1.5” x 4.5” x 1.5” [W / D / H] (3.81 cm x 11.43 cm x 3.81 cm)
Weight (w/o batteries)
.....................
UH-4:
6.6 oz (187 g),
UB-4:
3.1 oz (88 g),
LINK 4:
2.6 oz (80 g)
TABLE OF CONTENTS
TABLE CONTENTS
.......................................................................................................
2
INTRODUCTION
...........................................................................................................
2
USING THIS MANUAL
..................................................................................................
USING THIS MANUAL ..................................................................................................USING THIS MANUAL
2
SYSTEM FEATURES
....................................................................................................
3
UHF-24 RECEIVER OPERATION INSTRUCTION
.......................................................
4
UH-4 HANDHELD TRANSMITTER
...............................................................................
7
UB-4 BODYPACK TRANSMITTER
...............................................................................
8
LINK-4 PLUG-IN TRANSMITTER
................................................................................
11
CAUTIONS AND TROUBLESHOOTING
....................................................................
13
TIPS
.............................................................................................................................
14
SPECIFICATIONS
.......................................................................................................
15
FREQUENCY PLAN
....................................................................................................
15
SERVICE INFORMATION
.............................................................................
Back Cover
2
INTRODUCTION
Thank you for choosing the Nady UHF-24 wireless system, and congratulations on your choice. The
Nady UHF-24 wireless system is the best performance and price value in professional UHF wire-
less. It offers clear channel operation on the wide-open, uncluttered UHF band for interference-free
performance in any application or locale. The UHF-24 delivers 2 discrete channels in the frequency
range from 794.90MHz to 804.88MHz. The UHF-24 wireless 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. Please read the instructions for your system completely
before operating the unit.
USING THIS MANUAL
This booklet gives instructions for the operation of the UHF-24 Wireless systems: The UHF-24
receiver; and transmitter models UH-4 Handheld Microphone, UB-4 bodypack Lavalier Microphone,
and Link4 Snap-On microphone transmitters.
This manual will fi rst explain the benefi ts of the UHF-24 Wireless System and then will take you
step by step on how to operate your new system. Each section will give you detailed information.
Also, included in this manual are the frequency chart, microphone-wiring guide, system specifi ca-
tions and servicing information.
Specifi cations and design subject to change for im prove ment purposes without prior notice.