O W N E R ' S M A N U A L
Three-Channel FM Wireless Microphone System
Your Realistic Three-Channel FM Wire
less Microphone System consists of
three FM transmitters with ciip-on e-
iectret condenser microphones and a
three-channei receiver. The wireiess
microphone system iets you move
freeiy whiie it sends the microphone
signais to the receiver up to 200 feet
away.
The system features
• Three separate channels to let you
operate up to three microphones
at the same time.
• Separate voiume controis for each of
the three channeis.
• AC or DC operation of the receiver
• Single telescoping antenna for the
receiver.
• Microphone and LINE outputs.
• Transmitter beit dip.
• Microphone ciip to attach the mic
rophone to your coiiar, iapei, pocket,
o r o t h e r c o n v e n i e n t i o c a t i o n f o r
hands-free operation.
• M u t e S w i t c h -
• Standby Operation.
• Battery operation for the transmitter.
(g)1989, Tandy Corporation.
All Rights Reserved.
2 Realistic and Radio Shack are registered trademark of Tandy Corporation.
WA R N I N G : To r e d u c e t h e r i s k o f fi r e o r
electric shock, do not expose this app
l i a n c e t o r a i n o r m o i s t u r e .
RISK OF ELFCTHIC SHOCK
00 NOT OPEN
CAUTION: TO REDUCE THE RISK
OF ELECTRIC SHOCK, DO NOT RE
MOVE COVER (OR BACK). NO USER
SERVICEABLE PARTS INSIDE. REFER
SERVICING TO QUALIFIED SERVICE
PERSONNEL.
The lightning flash with arrowhead
symbol within an equilateral trian
g l e i s i n t e n d e d t o a l e r t t h e u s e r t o
the presence of uninsulated "dan
gerous voltage" within the product's
enclosure that may be of sufficient
m a g n i t u d e t o c o n s t i t u t e a r i s k o f
electric shock to persons.
The exclamation point within an equi
lateral triangle is intended to alert
the user to the presence of impor
tant operating and maintenance
( s e r v i c i n g ) i n s t r u c t i o n s i n t h e l i t e r a
ture accompanying the appliance.
CONTENTS
C o n t r o l L o c a t i o n s 4
P r e p a r a t i o n f o r U s e 5
Installing Transmitter/Microphone
B a t t e r y 5
Operation
R e c e i v e r O p e r a t i o n 7
T r a n s m i t t e r O p e r a t i o n 7
H i / L o P o w e r O p e r a t i o n 7
M u t e a n d S t a n d b y O p e r a t i o n 8
Mute Operation 8
S t a n d b y O p e r a t i o n 8
C h a n n e l s o f O p e r a t i o n 8
Troubleshooting 9
Care and Maintenance 10
S p e c i fi c a t i o n s 1 1
CONTROL LOCATIONS
Front View, Receiver
Tel esc op ic A n te nn a
A C P o w e r C o r d
- T ^ J E A J L / S r r C - A
J V W » t f 8 8 M IO W M O H f B Y S T t M
POWER Switch-
Back View, R eceive r
A V O L U M E B V O L U M E C V O L U M E
Control Control Control
Front View, Transmitter
A C P o w e r C o r d
L I N E D C 1 2 . 6 V J a c k
( A U X ) J a c k ( C e n t e r p o s i t i v e )
MIC ROPH ONE Jack
Ba ck Vie w, Tr an sm it t er
Top Vie w, Tr an sm i tt er
BATTERY Indicator
— B e l t C l i p
HI/LO Switch-4--IIIIO-'3il- AJt
OFF-STANDBY-TALK
Switch
Battery Compartment
"Microphone
4
PREPARATION FOR USE
I N S T A L L I N G T R A N S M I T T E R / R e c e i v e r C o n n e c t i o n s
M I C R O P H O N E B A T T E R Y
Install two AA batteries in each tran
smitter. For longest battery life, we
recommend alkaline batteries (Radio
Shack Cat. No. 23-552).
1. Open the transmitter's battery com
partment cover by pressing it in the
direction of the arrow and iifting it up.
Follow these steps to connect your
1. Be sure the POWER switch is set to
off and the VOLUME controls are set
to minimum.
2. Instail the AA batteries observing the
polarity (-t-and—) symbols marked
in the battery compartment.
3. Close the battery com partment cover.
The BATTERY indicator lights when
battery power is low. Use fresh re
placement batteries of the same type.
C a u t i o n : N e v e r l e a v e w e a k o r d e a d
b a t t e r i e s i n s i d e t h e t r a n s m i t t e r . E v e n
leak-proof batteries can ieak damaging
chemicais.
2. Use a shielded audio connector
cable with standard RCA phono
plugs. Connect the receiver's LINE
jack to the line-or aux-input of your
PA amp, tape recorder, mixer, or
other input component.
3. Once you connect the receiver to the
PA system, connect the AC cord to a
standard outlet.
If you are using the system for a portable
application, connect a DC power source
to the DC12.6V jack.
Notes:
• If you connect both AC and DC
power, AC power has priority.
• The system has a recommended
operational range between 4 and
200 feet
• The DC power source must provide
at least 150 mA at 12 volts, and the
plug's center contact must be posi
tive. We recommend Radio Shack's
DC power cord (Cat. No. 270-1534A).
• Cider PA systems have only mlc-
level Input jacks. In this case, connect
the receiver's MICRCPHCNE jack
to the mic Input jack on the PA system.
Use a shielded microphone cable
with standard 1/4-Inch phone plugs.
• If you are using the line- or aux-lnput
jack of your amp for another source,
c o n n e c t t h e r e c e i v e r ' s M I C R C P H C N E
jack to your amplifier's microphone
Input jack.
• Yo u c a n u s e b o t h o f t h e r e c e i v e r ' s
output jacks to send signals to two
places at the same time-an ampli
fier and a tape recorder, for example.
6
OPERATION
Here are a few important operating
guidelines that might help you as you
become familiar with your system.
RECEIVER OPERATION
1. Raise and extend the receiver's
antenna.
2 . P r e s s t h e P O W E R s w i t c h o n t h e
front panel to turn on the receiver.
The POWER indicator lights.
3 . T u r n o n t h e c h a n n e l s a s s o c i a t e d
with the transmitters you want to use
by turning each channel's volume
control clockwise.
TRANSMITTER OPERATION
1. Clip the microphone to the desired
location. Three to six inches from
your mouth is best.
2. Clip the transmitter to your belt or
pocket. Keep the microphone cable
as straight as possible. Be sure there
are no knots in the cable.
3. Set the transmitter's OFF-STANDBY-
TALK switch to TALK or STANDBY.
When you turn on each transmitter,
t h e R E A D Y i n d i c a t o r f o r t h a t
VOLUME control lights to indicate
th at it s r ec ei ver ch an ne l L s act lv at eH .
4 . W i t h t h e t r a n s m i t t e r ' s O F F -
STANDBY-TALK switch set to TALK,
speak into the microphone and adjust
the volume control on the receiver
and/or your amplifier for the desired
output level.
HI/LO POWER OPERATION
When you operate the transmitter within
10 to 15 feet of the receiver, set the
t r a n s m i t t e r ' s H I / L O s w i t c h t o L O t o
m i n i m i z e i n t e r f e r e n c e f r o m o t h e r
channels.
When you operate the transmitter more
than 10 to 15 feet from the receiver,
set the transmitter's HI/LO switch to HI.
Note: Avoid operating the transmitters
less than three feet from the receiver.
This can cause audio interference.
7
M U T E A N D S TA N D B Y O P E R AT I O N
You can turn off the microphone on your
system momentarily or for a long
period of time, as necessary.
M U T E O P E R A T I O N
If you want to momentarily turn off the
microphone, press and hold [MUTE].
O t h e r t r a n s m i t t e r s a r e n o t a f f e c t e d
w h e n o n e t r a n s m i t t e r i s m u t e d . T h i s i s
useful if you need to sneeze or cough.
The microphone remains muted as
long as you hold down [MUTE].
STANDBY OPERATION
If you want to turn off the microphone
for a long period of time without
turning off the transmitter, set the tran
s m it t er ' s O F F -S TA ND B Y- TA L K s w i t c h
to STANDBY. The READY indicator
r e m a i n s o n .
When you are ready to talk again, move
th e tr a n s mit t e r 's O F F-S TAN D B Y- TA L K
switch to TALK.
When you finish using the microphone
system, be sure to move the transmitter's
O F F - S TA N D B Y - T A L K s w i t c h t o O F F t o
conserve battery power.
Note: Turn off any receiver channels
before turning off your transmitter to
prevent pops.
C H A N N E LS O F O P E R AT IO N
Your wireless microphone system has
three different frequencies 49.830MHz,
49.855MHz, 49.892MHz. This lets you
use the three frequencies at the same
time/place.
8
TROUBLESHOOTING
We do not expect you to have any
problems with your three channel mi
crophone system, but if you do, the
solution is probably on this page. If you
still need assistance, contact your local
R a d i o S h a c k s t o r e .
If you experience interference with your
system
• Your wireless microphone system
uses the same radio frequency as
cordless telephones, remote control
toys, and wireless alarm systems.
Interference can occur if you operate
your system near these products.
• Other potential interference sources
include computers, wireless intercoms,
fluorescent lights, and electrical app
liances.
If your wireless microphone does not
work
• Be sure the power cord is connected.
• B e s u r e t h e P O W E R s w i t c h i s O N .
• Be sure the receiver's antenna is fully
extended.
• Be sure the receiver's antenna is not
near to or touching a metal surface.
• B e s u r e a l l b a t t e r i e s a r e f r e s h .
• B e s u r e t h e t r a n s m i t t e r ' s O F F -
STANDBY-TALK switch is in the TALK
position.
• Be sure the receiver VOLUME control
for that channel Is on. The READY
i n d i c a t o r s h o u l d b e l i t .
If you are unable to locate the problem,
take the system to your local Radio
S h a c k s t o r e f o r a s s i s t a n c e .
Q
C A R E A N D M A I N T E N A N C E
Y o u r T h r e e - c h a n n e l F M W i r e l e s s
Microphone System is an example of
superior design and craftsmanship. The
following suggestions will help you care
for the system so that you can enjoy it
for years.
Keep the product dry. If it does get wet,
wipe it dry immediately, Liquids might
contain minerals that can corrode the
e l e c t r o n i c c i r c u i t s .
Use and store the product only in nor-
mai temperature environments. High
temperatures can shorten the life of
electronic devices, damage batteries,
and distort or melt plastic parts.
Handle the product gently and careful
ly. Dropping it can damage circuit
b o a r d s a n d c a s e s a n d c a n c a u s e t h e
product to work improperly.
Keep the product away from dust and
dirt, which can cause premature wear
of parts.
Wipe the product with a dampened
cloth occasionally to keep it looking
new. Do not use harsh chemicals, clean
ing solvents, or strong detergents to
clean the product.
Use only fresh batteries of the recom
mended size and type. Always remove
old or weak batteries. They can ieak
chemicals that destroy electronic cir
cuits.
Modifying or tampering with the pro
duct's internal components can cause
a malfunction and might invalidate the
product's warranty. If your product is
not performing as it should, take it to
your local Radio Shack store. Our per
sonnel can assist you and arrange for
service if needed.
10
SPECIFICATIONS
S u p p l y V o l t a g e R e c e i v e r A C 1 2 0 ± 2 V
DC 12.6±0.2V
T r a n s m i t t e r D C 3 . 0 ± 0 . 1 V
T e m p e r a t u r e 2 5 ± 5 D E G R E E C
F r e q u e n c y C H A 4 9 . 8 9 2 M H z
C M B 4 9 . 8 5 5 M H z
CH C 49.830 MHz
Modulation PM
Transmitter
M o d u l a t i o n S e n s i t i v i t y 8 8 d B
For ± 1 . 2 k H z Deviation
D i s t o r t i o n A t ± 1 . 2 k H z 4 %
M o d u l a t i o n F o r 1 0 % D i s t o r t i o n 2 . 3 k H z
F r e q u e n c y R e s p o n s e 3 0 0 H z O d B
A t 1 . 2 k H z D e v i a t i o n 3 k H z O d B
(Refer to 1 kHz)
F r e q u e n c y A c c u r a c y ± 2 0 0 H z
Current Drain 10mA
Batt Low Indication 2.3V
M i n i m u m O p e r a t i n g V o i t a g e 2 . 0 V
T r a n s m i t t e r P o w e r 5 0 0 0 j u V / M
(at 3 Meter)
Receiver
Sensitivity at 12dB S.I.N.A.D.
S / N a t I m V R F 4 5 d B
Audio output Line l50mV
A t M ; : ) y V n l i i m e M i c R m V
11
F r e q u e n c y R e s p o n s e 3 0 0 H z O d B
R e f e r T o 1 k H z 3 k H z - 3 d B
T H D A t I m V R F 4 %
S e l e c t i v i t y A t ± 3 0 k H z 7 0 d B
Image Rejection 50dB
1 0 . 7 M H z I F R e j e c t i o n 6 0 d B
Current consumption AC 2.0W
1 2 . 6 V D C 6 5 m A
R e c e i v e r S q u e l c h 0 . 7 5 ; / V + 6 d B ( 1 k H z To n e + 1 . 2 5 k H z
Deviation FM)
System
Open Field Operation Range
L o w P o w e r 2 - 3 0 F e e t
H i g h P o w e r 1 0 - 2 0 0 F e e t
12
NOTE
i.q
NOTE
14
NOTE
R A D I O S H A C K L I M I T E D W A R R A N T Y
This product is warranted against defects for 1 year from date of purchase from Radio
Shack company-owned stores and authorized Radio Shack franchisees and dealers.
Within this period, we will repair it without charge for parts and labor. Simply bring your
Radio Shack sales slip as proof of purchase date to any Radio Shack store. Warranty
does not cover transportation costs. Nor does it cover a product subjected to misuse or
accidental damage.
E X C E P T A S P R O V I D E D H E R E I N , R A D I O S H A C K f V l A K E S N O W A R R A N T I E S ,
E X P R E S S O R I M P L I E D , I N C L U D I N G W A R R A N T I E S O F M E R C H A N TA B I L I T Y A N D
FITNESS FOR A PARTICULAR PURPOSE. Some states do not permit limitation or
exclusion of implied warranties: therefore, the aforesaid limitation(s) or exclusion(s) may
not apply to the purchaser.
This warranty gives you specific legal rights and you may also have other rights which vary from state to state.
We Service What We Sell
RADIO SHACK
A Division of Tandy Corporation
F o r t W o r t h . T e x a s 7 6 1 ( 1 9
811060240B
PrintoH in Tai\A/pn
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