UHF Wireless Microphone System
(U.S.) If you are experiencing operation problem with your system, check out the support
Department. Should your wireless System require service, you must contact the Nady Service
Department at (510) 652-2411 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 pack-
age. Cashier’s check or money is enclosed (If not prepaid with credit card), and ship the unit
prepaid to: Nady System Inc., Service Department, 6701 Shellmound Street, Emeryville, CA
94608. Include a brief description of the problem you are experiencing, for service of a unit
under warranty follow the instruction of your Warranty Card regarding Warranty Service.
(International) For service, please contact the NADY distributors in your country through the
dealer from whom you purchase this product.
DO NOT ATTEMPT TO SERVICE THIS UNIT YOURSELF, AS THAT WILL VOID YOUR
WARRANTY.
NADY SYSTEMS, INC.
6701 Shellmound Street • Emeryville, CA 94608
OWNER’S MANUAL
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TIPS
SYSTEM FEATURES
• The receiver antennas should be kept away from any metal surface.
• If the Volume Control of the receiver is set too high, it may over-drive the input of the mixer, caus-
ing distortion. Conversely, if the output is set too low, the overall signal to noise ratio of the system
may be reduced. Adjust the output level of the receiver such that highest sound pressure level
going into the microphone causes no input overload in the mixer, and yet permits the mixer level
control to operate in the normal range (not too high and not too low). This provides the optimum
signal to noise for the entire system.
• Before inserting the batteries, please make sure that they are inserted according to the correct
polarity.
• Use only brand new alkaline batteries. Do not use “general purpose” batteries. When batteries are
weak, replace the batteries altogether at the same time.
• Two discrete UHF wireless receivers in one housing, for simultaneous operation of two transmit-
ters
• Back panel Balanced XLR mic level outputs, unbalanced 1⁄4” jack line level sum output, and sepa-
rate volume, and external adjustable mute controls for each channel
• Front panel LED display indicates TX signal received and 5-segment AF level displays for each
channel.
• Front panel dual telescoping retractable antennas
• Exclusive patented companding circuitry and highest quality audio for an unsurpassed 120dB
dynamic range
• Operates on select UHF frequencies within separate bands 902-928 and 944-952 MHz
• Tone Squelch circuitry eliminates On/Off pop and protection from RF interference
• Half-rack receiver and unique snap-out panel locking tabs design for single or dual receivers
(side-by-side) optional rack mounting
• Position the receiver such that it has the least possible obstructions between it and the transmit-
ter. Line of sight is best!
• The transmitter and the receiver should be as close as possible but not less than 1 meter.
• For the best operation, the receiver should be placed at least 1 meter above the ground and 1
meter away from a wall or metal surfaces. The transmitter should be also at least 1 meter from the
receiver. Keep antenna away from noise source such as motors, automobiles, neon light, signal
processor, computer, as well as large metal objects.
• A receiver cannot receive signal from two or more transmitters simultaneously. The UHF-24 has 2
receivers so can be operated with 2 transmitters only on the same frequencies.
• Turn the transmitter off when it is not in use. Remove the batteries if it is not to be used for a long
period.
• Externally powered with DC adapter (15VDC/0.4A) included
• Nady DM-10D neodymium cartridge delivers transparent vocals, maximum feedback rejection and
minimal handling noise
• OFF/MUTE/ON switch for ease of use
• Unique screw-on battery compartment for quick pop-in battery replacement- uses standard 9V
alkaline battery
• Single LED indicator flashes once for unit on; lights steady for low battery alert
• Input level control for optimum sound adjustment
• Rugged ABS housing with integral antenna
Note: Scratchy noises can sometime occurs when some electric guitars with dirty pots or connec-
tions are used with any wireless system. Therefore, the supplied capacitor provides first order filter-
ing 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:
a. Make sure all guitar volume and tone pots are clean and all contacts are solid-this is very
important.
• Compact bodypack with screw on jack for instrument or lavalier microphone input
• OFF/MUTE/ON switch for ease of use
b. A 47pF capacitor soldered across the pot to ground terminal of the guitar’s volume and tone
pots will provide extra filtering.
• Unique sliding battery compartment for quick pop-in battery replacement- uses standard 9V alka-
line battery
• Single LED indicator flashes once for unit on; lights steady for low battery alert
• Input level control for optimum sound adjustment (LT/HM)
• Rugged ABS housing with external antenna
• Compact microphone transmitter that converts any dynamic XLR hardwired microphone to wire-
less operation
• OFF/MUTE/ON switch for ease of use
• Unique sliding battery compartment for quick pop-in battery replacement- uses standard 9V alka-
line battery
• Single LED indicator flashes once for unit on; lights steady for low battery alert
• Audio LO/MED/HI gain selection for optimum sound
• Selectable 9V DC phantom powering for lavalier condenser microphone operation
• Standard locking 3-pin connector with adjustable threaded ring to provide secure connection to
any XLR handheld direct or to lavalier microphone cable
• Lightweight, ABS housing with integral antenna
14
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CAUTIONS AND TROUBLESHOOTING
UHF-24 RECEIVER
Rack-mounting the Receiver
Feedback
There are two options available for rackmounting the UHF-24 Dual Channel Receiver: single or
side-by-side with another UHF-24 receiver.
Observe care in selecting P.A. volume, transmitter location and speaker placement so that the
acoustic feedback (howling and screeching) will be avoided. Please also note the pickup pattern
characteristics of the microphone selected. Omni directional mics pick up sound equally from all
direction, and are prone to feedback if not used carefully. Unidirectional mics are more resistant to
feedback. However, pick up sound source best that are directly in front of the mic. Also mics that
arefarther from the sound source, such as lavalier, required more acoustic gain and thus are also
more prone to feed back than close-source mics such as handheld or headworn models that are
used close to the mouth.
a. Single mounting: Remove the SIDE MOUNT CLIPS (1) from each side of the receiver and
slide in the optional ERM-3 RACK EARS (2)
b. Side-by-side double mounting: After removing the SIDE MOUNT CLIPS (1) from each side
of the receivers, join the two receivers with the EJC-3 JOINING CLIPS (3) and slide in the
ERM-33 EARS (4)
(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-24 receiver. Always ensure adequate airflow and
heat dissipation in any rack configuration.)
Microphone Damage
Headset and lavalier mic users, note that the microphone element can easily be destroyed by the
buildup of salts and minerals from perspiration and saliva. It is good practice to put a windscreen on
the mic at all time to protect it.
Antennas
The UHF-24 receiver is equipped with DUAL TELESCOPIC RETRACTABLE ANTENNAS (5)
These should be extended fully to obtain maximum range. The optimal antenna positions are 45
degrees from the receiver and 90 degree from each other. For maximum range, it is always best
to maintain a line of sight (no obstruction) between the receiver antennas and the transmitter at all
time whenever possible.
No Audio
If you not getting audio through the system, carefully recheck all setup procedures. The receiver
and transmitter must be on the same RF channel (frequency).
Powering the Receiver
RF Interference
Powering the receiver by plugging the provided DC ADAPTOR (15VDC/0.4A) PLUG (15) into the
DC INPUT JACK (14) on the back of the receiver. Then plug the adapter into an AC outlet. (Note:
Any 15VDC/0.4A capacity AC/DC adapter can also be used.) Turn VOLUME CONTROLS (10) of
all channels to counter-clockwise for minimum setting. Once the receiver is connected to a power
source, push the POWER SWITCH (7) to the ON position. The POWER LED (6) will light up. The
received signal CH. A OR B LEDs (8) and 5-SEGMENT AF LED (9) indicators on the front panel of
the receivers will not light up at this time, until one or more of the two channels is receiving a signal
from your system’s transmitters.
If you encounter receiving interference (from other than an operating TV station), often it can be
overcome by adjusting the receiver ‘s MUTE (squelch) control. Please note that wireless frequen-
cies are shared with other radio services. According to FCC regulations, wireless microphone
operations are unprotected from interference from other licensed operations in the band. If any
interference is received by any Government or non-government operation, the wireless microphone
must be cease operation or change frequencies. The above statement is valid only for use in the
U.S.A.
Mute (Squelch) Adjusting
In normal operation of the UHF-24 receiver, the mute control for each channel A or B should be set
fully clockwise to the factory preset of 1uV RF level for maximum sensitivity. Doing so sets each
receiver for maximum range. However, in case of high RF activity, the mute levels should be read-
justed to compensate for the adverse conditions in a particular location. If, with a transmitter turned
off, one or more LEDs of the corresponding receiver for that transmitter flicker or stay on, the MUTE
(SQUELCH) CONTROL (12) of the corresponding channel should be turned counterclockwise until
the LEDs extinguish. For each of the two channels, when the mute (Squelch) is properly adjusted,
the corresponding TX LED displays will light only when the system’s transmitter is turned on. Turn-
ing the mute (Squelch) counter clockwise too far will result in reducing range, but yield a quieter
mute function during dropout or at the end of the operating range.
Note: If you turn on the transmitter of only one channel within 10 feet of the receiver, both CH. A or
B LEDs may come on. This is normal and due to the receiver’s high sensitivity. This does not indi-
cate a problem and operation with both transmitters on will be unaffected. Proper operation of the
MUTE CONTROL (12) (counterclockwise) will extinguish the LED that is affected by the transmitter
of the other channel. This will also reduce range.
Audio Level and Peak LED indicator
The UHF-24 receiver is equipped with a 5-segment LED AF LEVEL (9) display for each channel.
The red LED on the right of these displays is the audio peak indicator. Note: That the peak red LED
will light with a strong audio signal from the transmitter. Occasional flickering of the peak LED on
loud input signals to the transmitter is normal. However, If the peak LED lights continuously, the
volume into the transmitter should be decreased or audio distortion may result.
13
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LINK 4™ PLUG-IN TRANSMITTER
UHF-24 RECEIVER
Receiver Volume Controls Adjust
The volume controls work only for the 1⁄4” sum output. Turn Volume controls on the UHF-24
receiver clockwise to near full gain. Adjust Volume up or down so that no audio distortion is present
when amplifier or mixer is set at their usual levels. At full gain, the system gain is approximately
+20dB higher than a direct line-to-amp connection.
Connecting Audio Outputs
The UHF-24 receiver provides both a fixed mic level balanced audio output XLR for each channel
and an adjustable line level A+B unbalanced audio output 1⁄4” jack which sums the CH-A plus CH-B
audio signals.
If the fixed level XLR OUTPUTS (11) are used, the volume level of each receiver should be ad-
justed by the mixer to which the UHF-24 receiver is connected.
• The balanced XLR OUTPUTS (11) are preset at the factory and are not adjustable with the re-
ceiver volume controls. For each channel you wish to use, insert an audio cord with a (female)
XLR plug into its audio jack on the back of the receiver. Plug the other end of this cord into
your amplifier, effects or mixing board. The volume level of each receiver should be adjusted
by the mixing board. The fixed level balanced XLR outputs are for mic level connections.
• The A+B UNBALANCED SUM (13) audio output is controlled by the rear panel volume control
for each channel. To use the A+B unbalanced sum audio output, just plug an audio cable
with a 1⁄4” mono plug (TS) into the 1⁄4” jack and plug the other end to your amplifier or mixing
board. Turn the volume controls on the UHF-24 receiver clockwise to near full gain. Adjust
each volume up or down so that no audio distortion is present when the ampflier or mixer is
set at their usual levels. The adjustable level unbalanced sum output is for line level connec-
tions.
Level Trim Adjust
For optimum performance, an INPUT SELECT SWITCH (38) is provided. You could select the
switch to LO, MED or HI gain setting defending to your microphone use. Depending on the average
distance between vocalist’s mouth and microphone, you can adjust the level for your application.
Factory setting is MED for hardwire dynamic microphone. This is a setting to be used in most typi-
cal close microphone applications. Set for maximum possible gain and headroom without notice-
able distortion of the high level peaks. Experiment and set for maximum possible gain without
audible distortion on the high level peaks.
(Note: Selecting LOW gain setting can compromise the signal-to-noise and it is not recommended.)
a. Microphone Connection (Using the UH-4, UB-4 and the LINK-4 transmitters)
For microphone use, either the XLR balanced mic audio output or the 1⁄4” line level A+B unbal-
anced output can be used. The XLR balanced output is non-adjustable microphone level, similar to
hardwire mic levels. Plug an XLR connector into one or both of the XLR output jacks on the rear of
the unit and plug the other end(s) into your amplifier or mixing board. (Note: Make sure the phan-
tom power on your mixing board is turned off and the volume is turned down when making connec-
tions.) For your convenience, the XLR output levels are preset at the factory and are not adjustable
with the receiver volume controls. To use the A+B unbalanced output 1⁄4” jack, follow the instruc-
tions for the Instrument Connection (below), except start with the receiver volume at 1⁄2 maximum
and adjust the volume control for each channel until the mixed CH A or CH B volume levels are
optimal. If the volume controls are set too high, you may overload your mixer or amplifier.
b. Instrument Connection (Using the UB-4 instrument transmitter)
The microphone is now ready to use. The CH. A or B LED indicator on corresponding receiver
should now be on, indicating a received signal from the transmitter. When ready to speak, slide the
OFF/STANDBY/ON SWITCH (36) to the ON position and hardwire mute switch if it was off. Adjust
the volume of the receiver as per in the receiver operating instruction.
Notes:
• The microphone ball on your hardwire microphone functions as an integral antenna. For proper
operation, it should not be cover or touch during operation.
• Observe care in selecting P.A. volume, transmitter location and speaker placement so that acous-
tic feedback (howling or screeching) will be avoided.
Insert an audio cord with a 1⁄4” mono phone plug in the A+B unbalanced output jack on the rear
panel of the receiver. Plug the other end of the cord into an amplifier, effect, or mixing board. Adjust
the appropriate volume control for the channel being used on the UHF-24 receiver clockwise to
about 3⁄4 rotation, until the mixed volume level is comfortable for your application. This setting is
roughly equivalent to a direct instrument cord connection. Tuning the volume up to maximum will
provide 4dB gain over a cord. (Note: Since this is a mixed output of both channels CH-A and CH-B,
both channels will be processed simultaneously by the amplifier and/or effects connected to, which
may not be appropriate for your application.)
39
33
34
31
Your UHF-24 receiver is now operational and ready to use. Now that you have completed the above
step, proceed to instructions for the actual transmitter, UH-4, UB-4 or LINK 4, that is included with
your system.
Tone Squelch™ and Additional Operating Notes
The UHF-24 receiver and transmitters feature Nady’s Tone Squelch™ circuit. Nady now offers Tone
Squelch™ for professional uses and anyone who needs advanced protection against RF interfer-
ence during a recording, performance, or presentation. This feature is strongly recommended for
situations where the transmitter is turned on or off during use. With Tone Squelch™ an unwanted
signal on the same operating which may enter your inactive receiver will not be amplified by your
connected equipment even if the receiver is left on with the transmitter(s) off. Thus Tone Squelch™
prevents a pop or disruptive noise from your sound system.
38
36
35
37
The receiver detects a specific tone code signal from your transmitter, which unlocks your receiver’s
audio. In this manner only your own modulated signal can then be heard. (The receiver has an
12
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LINK 4™ PLUG-IN TRANSMITTER
UHF-24 RECEIVER
internal Tone Squelch defeat feature. Contact your Nady dealer or Nady Systems Customer Service
for details.)
Transmitters Set Up
The LINK-4 transmitter requires a single 9V battery to operate. To open the battery compartment,
slide BATTERY DOOR (31) downward to open the cover, exposing the BATTERY HOLDER (32)
Insert a fresh 9V battery according to the correct polarity as indicated on the transmitter body. Slide
back the door onto the original position. Make sure the cover is secured completely. Fresh Alkaline
batteries can last up to 10 hour of operation, but in order to ensure optimum performance, it is
recommended that the batteries should be replaced after 6-8 hours of use.
Note:
• Even though your system has Tone Squelch™, it’s always best to keep the volume controls of
unused channels, (with corresponding transmitter off) turned off in the amplifier or the mixer. The
audio should only be “live” if the transmitter is on.
• As when making any connection, make sure the connected amplifier or mixing board volume is at
the minimum level before plugging in the receiver to avoid possible sound system damage.
• Only one transmitter can be used with one receiver channel. It is not possible to use two transmit-
ters on the same frequency and mix the output of these transmitters into one wireless receiver
channel. The dual receiver UHF-24 can thus be only used with two transmitters on the same
frequencies as the two receiver channels.
Handheld Microphone Installation
Step 1
Rotate the transmitter’s threaded LOCKING RING (33) counter-clockwise inward the
transmitter body until it stops.
Step 2
Step 3
Hold your mic in one hand and the LINK 4 in other.
Place your mic into the XLR CONNECTOR (34) and push your mic all the way down
untill a click sound.
Step 4
Step 5
Lock the mic into place with the adjustable threaded LOCKING RING (33) by rotating the
ring clockwise, to the top of the transmitter
To release the XLR CONNECTOR (34), turn the treaded LOCKING RING (33) counter-
clockwise and press the RELEASE BUTTON (39)
5
Lavalier Microphone Installation
You will need a male XLR to mini male XLR adaptor (Switch-Craft TA-4 or equivalent) to use a
lavalier microphone per the installation instructions. Then plug the lavalier microphone’s mini male
XLR into the adapter. The PHANTOM POWER SWITCH (35) should be turned ON for use with a
condenser lavalier mic which requires external phantom powering.
CH.
A
CH.
B
6
7
8
9
9
Note: The lavalier microphone you are using must terminate with a mini XLR or full XLR connector
and confirm to the pin assignments shown below. If they do not, the lavalier mic may not work with
the LINK 4. If you have any questions, please contact your Nady dealer or Nady Systems Service
Department.
The pin assignments on the LINK 4 XLR connector are as shown:
Ground
1
10
15
11
3
680
680
XLR
Connector
Top View
Phantom Volt. (full 9V battery
voltage) switchable
3
2
1
2
9V
9V
Mic
Input
Microphone Operation
To turn it on, slide the OFF/STANDBY/ON SWITCH (36) to the STANDBY position first (transmit-
ter on, audio muted) or the ON position (transmitter and audio both on). You could also use your
hardwire microphone audio mute switch afterward. The BATT LOW INDICATOR LED (37) will give
a single flash in red, indicating usable battery strength. In case of dead or low battery, the LED will
either not go on at all or will stay on continuously, indicating that the battery should be replaced with
a fresh one. To preserve battery life, turn the transmitter off when not in use. To turn off, slide the
OFF/STANDBY/ON SWITCH (36) to OFF position. No LEDs will light up. The unit is now off.
1
4
11
6
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UB-4 BODYPACK TRANSMITTER
UH-4 HANDHELD TRANSMITTER
Transmitters set up
The UH-4 transmitter requires a single 9V battery to operate. To open the battery compartment,
unscrew the BATTERY COVER (16) with a counter-clockwise turn and remove the cover, exposing
the BATTERY HOLDER (17). Insert a fresh 9V battery according to the correct polarity as indicated
on the transmitter body. Screw cover back onto the microphone. Make sure the cover is screwed on
completely. Fresh alkaline batteries can last for up to 10 hours of operation, but in order to ensure
optimum performance, it is recommended that the batteries should be replaced after 6-8 hours of
use.
INPUT SELECTOR
SWITCHES
HL
Instrument
Headworn
Lavalier
G
G
G
G
H
H
H
L
L
L
HL
Transmitter Operation
To turn transmitter on, slide the OFF/STANDBY/ON SWITCH (18) to the STANDBY position first
(transmitter on, audio muted) or the ON position (transmitter and audio both on). The LOW BAT
LED (19) will give a single flash, indicating usable battery strength. In case of dead or low battery,
the LOW BAT LED will either not go on at all or will stay on continuously. During use, if the LOW
BAT LED stays on continuously, it is indicating that the battery should be replaced with a fresh one.
To preserve battery life, turn the transmitter off when not in use.
27
G
24
25
HL
G
Receiver Volume Controls Adjust
The Volume Controls adjust only the 1⁄4” sum output level. Turn the VOLUME CONTROLS (10) on
the UHF-24 receiver clockwise to near full gain. Adjust Volume up or down so that no audio distor-
tion is present when amplifier or mixer is set at their usual levels. At full gain, the system gain is ap-
proximately +20dB higher than direct line to amp connection. If the XLR OUTPUTS (11) are used,
the volume level of each receiver should be adjusted by the mixer to which the UHF-24 receiver is
connected.
26
Level Trim Adjust
For optimum performance, an INPUT LEVEL CONTROL (20) is provided for the transmitter. Adjust
the microphone gain by inserting a small slot-headed screwdriver through the adjustment hole,
located on the topside of the battery compartment, under the compartment cover. Factory setting
is 1⁄2 full. This is a setting to be used in most typical close microphone applications. Depending on
the average distance between vocalist’s mouth and microphone, you can adjust the level for your
application. Set for maximum possible gain and headroom without noticeable distortion of the high
level peaks. It is recommended that the level be set at about 1⁄2 maximum. 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 it is not recom-
mended.)
The transmitter is now ready to use. The CH.A or B LED indicator on the corresponding receiver
should now be on, indicating a received signal from the transmitter. When ready to speak, slide the
switch to the ON position. Adjust the volume of the receiver as outlined in the Receiver Operating
Instructions section: Connecting Audio Outputs
Notes:
Opening Battery Compartment
• The battery compartment on the UH-4 functions as a built-in antenna. For proper operation, it
should not be covered by the hand or touched during operation.
• Observe care in selecting P.A. volume, transmitter location and speaker placement so that acous-
tic feedback (howling or screeching) will be avoided.
10
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UH-4 HANDHELD TRANSMITTER
UB-4 BODYPACK TRANSMITTER
The UB-4 is equipped with two INPUT SELECTOR SWITCHES (27) located under the
cover on the circuit board 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. (G/H/L).
There are two switches, one with selectable position G, H, L and the other with G, HL.
To select inputs: (see chart on page 10)
A. Instrument — both switches to “G”
B. Headworn Mic — set one switch to “HL” and the other to “H”
C. Lavalier Mic — set one switch to “HL” and the other to “L”
Transmitter Operation
To turn transmitter on, slide the OFF/STANDBY/ON SWITCH (28) to the STANDBY position first
(transmitter on, audio muted) or the ON position (transmitter and audio both on). The LOW BAT
LED (29) will give a single flash, indicating usable battery strength. In case of dead or low battery,
the LOW BAT LED will either not go on at all or will stay on continuously. During use, if the LOW
BAT LED stays on continuously, it is indicating that the battery should be replaced with a fresh one.
To preserve battery life, turn the transmitter off when not in use.
Receiver Volume Controls Adjust
17
The volume controls adjust only the 1⁄4” sum output. Turn VOLUME CONTROLS (10) on the UHF-
24 receiver clockwise to near full gain. Adjust Volume up or down so that no audio distortion is pres-
ent when amplifier or mixer is set at their usual levels. At full gain, the system gain is approximately
+20dB (+4dB for GT) higher than a direct line-to-amp connection. If the fixed level XLR OUTPUTS
(11) are used, the volume level of each receiver should be adjusted by the mixer to which the UHF-
24 receiver is connected.
16
Level Trim Adjust
For optimum performance, an INPUT LEVEL CONTROL (30) for LT/HM is provided. Adjust the
microphone gain by inserting a small slot-headed screwdriver to the adjustment knob, located on
the topside of the transmitter unit, next to the mic input jack. Factory setting is 1⁄2 full. This is a set-
ting to be used in most typical close microphone applications. Depending on the average distance
between vocalist’s mouth and microphone, you can adjust the level for your application. Set for
maximum possible gain and headroom without noticeable distortion of the high level peaks. It is
recommended that the level be set at about 1⁄2 maximum. Experiment and set for maximum pos-
sible gain without audible distortion on the high level peaks.
UB-4 BODYPACK TRANSMITTER
(Note: Turning down the gain too much can compromise the signal-to-noise and it is not recom-
mended.)
Transmitters set up
The UB-4 transmitter requires a single 9V battery to operate. To open the battery compartment,
snap open the BATTERY DOOR COVER (21), exposing the BATTERY HOLDER (22). Insert a
fresh 9V battery according to the correct polarity as indicated on the transmitter body. Snap the
The transmitter is now ready to use. The CH. A or B LED indicator on corresponding receiver
should now be on, indicating a received signal from the transmitter. When ready to speak, slide the
switch to the ON position. Adjust the volume of the receiver as per in the receiver operating instruc-
tion section.
cover back onto the bodypack. Make sure the cover is secured completely. Fresh alkaline batteries
can last up to 10 hour of operation, but in order to ensure optimum performance, it is recommended
that the batteries should be replaced after 6-8 hours of use.
Notes:
Input Connection and Input Selector Switches
• The transmitter has an external flexible wire antenna. For proper operation, it should not be cover
or touch during operation.
• Observe care in selecting P.A. volume, transmitter location and speaker placement so that acous-
tic feedback (howling or screeching) will be avoided.
The UB-4 is provided with a 3.5MM LOCKING JACK (23) for connecting the audio input selected.
Connect either the INSTRUMENT CORD (24), or the HEADWORN MIC (25), or LAVALIER MIC
(26) as desired, according to the input selected. (Note: Use only the input audio source as per the
input selected with the input 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 clockwise ti
thread it on the jack. To unplug, reverse the process. Slip the transmitter into a pocket or clip it onto
you cloth or instrument strap (if using the UB-4 as an instrument transmitter.)
8
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