Your Optimus 2-Channel 170 MHz
Wireless FM Microphone System is
designed for use with public address
systems, musical instrument amplifiers, or other audio s ystems. The system’s long range (about 150 feet) lets
you use it anywhere yo u would use a
conventional micr ophone. Its features
include:
Two Handheld Microphones
each microphone on a sepa rate chan nel, two people can s peak or perform
at the same time withou t microphone
interference.
Separate Volume Controls
easily balance the system receiver’s
output with other sound sources.
Compander Noise Reduction
proves the signal to give you the best
possible sound.
Audio and Line Outputs
easily connect to any am plifi er, mi xing
board, or recorder, and you can use
both outputs at the same time.
Standby Switch
— lets you turn off
the microphone without turning of f the
microphone’s transmitter, thus avoiding a loud pop when you turn the microphone back on.
— with
— let you
— im-
— let you
Low Battery Indicator
— helps you
avoid last-minute battery failures.
WARNING
shock hazard, do not expose this product to
rain or moisture.
CAUTION
OF ELECTRIC SHOCK, DO NOT
REMOVE COVER OR BACK. NO USERSERVICEABLE PARTS INSIDE. REFER
SERVICING TO QUALIFIED PERSONNEL.
!
:
To reduce the risk of fire or
CAUTION
RISK OF ELECTRIC
SHOCK. DO NOT OPEN.
: TO REDUCE THE RISK
This symbol is intended to
alert you to the presence of
uninsulated dangerous voltage
within the product’s enclosure
that might be of sufficient magnitude to constitute a risk of
electric shock. Do not open the
product’s case.
This symbol is intended to
inform you that important operating and maintenance instructions are included in the
literature accompanying this
product.
Optimus and RadioShack are registered trademarks used by Tandy Corporation.
All Rights Reserved.
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FCC NOTICE
This wireless microphone system complies with Part 90 of
FCC Rules
. There
are two frequencies available for the
system. You must get a license for
each frequency you plan to use before
you use the system (one license can include both frequencies). Licensability
depends on how you will use th e system.
Look in your local phone book for the
nearest FCC office a nd contact them
to get the necessary application.
SETTING UP THE
SYSTEM
Your system has two channels for
transmitting. Each microphone has a
sticker with a letter on it to help you
determine which mic r oph one is wh ich.
Microphone 1 (MIC 1) i s marked
or
. Microphone 2 (MIC 2) is marked
B
, or H. You can combine up to
E, G
three separate systems so you can
use up to six microphones together
(each with a different frequency).
Installing the Transmitter’s
Battery
Each microphone transmitter re quires
a 9-volt battery (not sup plied ) for power. For the best performance and
longest life, we recommend an alkaline battery, available at your local RadioShack store.
A, D
Cautions:
• Use only fresh batteries of the
required size and recommended
type.
• Do not mix old and new batteries,
different types of batteries (standard, alkaline, or rechargeable), or
rechargeable batteries of different
capacities.
Follow these steps to i nstall each b attery.
1. While holding the microphone’s
handle, carefully unscrew the windscreen far enough to remove the
battery door.
Windscreen
,
2. Install the batter y into the battery
compar tment on top of the r ibbon,
being sure the + and – term inals
touch the appropr iate contacts as
marked inside the compartment.
Be sure to fir mly pr ess the b attery
in place.
Battery Door
®
Cat.No.3 2-1222
FCC ID:AA O 320 122 2
TWO-C HANNEL 170MHz WIRELES S
FM MICROP HONE SSYS TEM
POWER SUPPLY: 1X"9V" BATT .
CUSTOMMANUFACTURED INCHINA FOR RADIOSHACK,
ADIVISION OFTANDYCORPORATION, FORTWORTH,
TEXAS76102
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A
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3. Replace the batter y compartment
cover and tighten the windscreen.
If the battery power is low, the red
BATT LOW indicator lights when the
microphone’s switch is set to
STBY (standby). Replace the battery.
AAO3201222
Warning:
Dispose of old batteries
ON or
promptly and prope rly. Never burn or
bury them.
Caution:
If you do not plan to use the
microphone for a week or more, remove the battery. Batteries can leak
chemicals that c an damage electronic
parts.
Connecting the Receiver to
an Amplifier, Mixer, or Tape
Recorder
Connect the receiver to an amplifier,
mixer, or tape recorder using either
the receiver’s
jack.
To use the
shielded audio cable’s phono plug to
the receiver’s
other end to a line-leve l input on your
amplifier, mixer, or tape recorder.
LINE or AUDIO output
LINE jack, connect a
LINE jack. Connec t the
To use the
shielded audio cable’s mono
phone plug to the receiver’s
AUDIO jack, connect a
1
/4-inch
AUDIO
jack. Connect the other end to a microphone-level input on your amplifier,
mixer, or tape recorder.
A
Connecting the Power
Adapter
The receiver operates from standard
AC power, using the supplied 12-volt
DC power adapter.
Cautions:
• Use only the supplied adapter. If
you lose or damage th is adapter,
order a replacement from your
local RadioShack store. Using
other adapters coul d damage the
receiver.
• Always plug the adapter into the
receiver before you plug it into the
AC outlet. Always unplug the
adapter from the outlet before you
unplug it from the receiver.
1. Turn off the receiver by pressing
POWER until the button is in the
outmost (off) position.
2. Plug the adapter ’s barrel plug into
the receiver’s
route the cord through the strain
relief.
L
IN
E
DC 12V jack, then
AUDIO
DC12V
100mA(MAX)
Strain Relief
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3. Plug the adapter into a standard
AC outlet.
OPERATION
Leave the microphone’s slide
Note:
switch set to
the receiver is on. This keeps the system from producing a loud hiss.
1. Fully extend the receiver’s antenna.
2. Turn on your tape r ecorder, amplifier, mixing board, and other necessary audio components. Set
their volume controls (or input level
controls) to moderate settings.
3. If you plan to use both wireless
microphones, turn both the
receiver’s
clockwise until they click on. (If
you plan to use only one microphone, turn on only the appropr iate control.) Position each control
at its lowest setting.
4. Press
POWER
receiver. The power indicator lights.
5. Set the microphone transmitter’s
slide switch to
receiv er ’s MIC 1 or MIC 2 indi cat or
lights, depending on which mi crophone you turn on. If your microphone is marked
or ON whenever
STBY
ER
V
I
E
C
E
IC
SSR
E
L
E
R
1M
WI
C
I
L
A
M
N
O
ESSI
F
LPRO
E
N
N
A
H
2C
ER
W
PO
MIC VOLUME
to turn on the
or ON. The
STBY
, or C, the
A, D
1
2
OFF
controls
2
E
M
U
L
VO
C
I
M
MAX
OFF
MAX
MIC 1 indicator lights. If your
microphone is mar ked
E, G
, or H,
the MIC 2 indicator lights.
6. If you are using a separate audio
source (such as a tape deck or
CD player) with your audio system, turn on the a udio source and
adjust the re ceiver’s
MIC VOLUME
controls for the best volume and
balance.
For the best results , expe ri men t
Note:
with the receiver’s
MIC VOLUME
settings and the volume setti ngs of other
components in your audio system. If
you are using a source that has a variable output contr ol, such as a music al
instrument, be sure you adjust the volume with the instrument at the highest
level you intend to use.
Using the Standby Setting
The microphone transmitter’s
setting lets you turn off the microphone without turnin g off its transmitter. If you move the switch from
or ON, you will hear a loud pop.
STBY
Use the
setting to avoid this
STBY
sound. There should be virtually no
sound when you slid e the switch from
to ON.
STBY
If you set the switch to
OFF
audio system is on, there may be a
loud hiss. There is no hiss when you
set the switch to
STBY
.
To conserve batt er y power, be sure t o
set the switch to
when you finish
OFF
using the microphone transmitter.
STBY
to
OFF
while your
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CARE AND MAINTENANCE
Your Optimus 2-Channel 170 MHz Wireless FM Microphone System is an example
of superior design and cra fts man sh ip. T he fol low in g s ug gesti ons w il l hel p y ou c are
for your system so you can enjoy it for years.
Keep the system dry. If it gets wet, wipe it dry immediately. Liquids
might contain minerals that can corrode the electronic circuits.
Use and store the system only in normal temperature environments.
Temperature extrem es can shorten the life of electronic devices, d amage batteries, and distort or melt plastic parts.
Keep the system away from dust and dirt, which can cause premature
wear of parts.
Handle the system gently and carefully. Dropping it can damag e circuit
boards and cases and can cause the system to work improperly.
Use only fresh batteries of the required size and recommended type.
Batteries can leak chemicals that damage your system’s electronic
parts.
Wipe the system with a damp c loth occ asional ly t o keep it look ing n ew.
Do not use harsh ch emicals, cleani ng solvents, or str ong detergen ts to
clean the system.
Modifying or tamper ing with the system’s internal c omponents can cause a malfunction and might invalidate its warranty and void yo ur FCC author ization to operate it. If your system is not performing as it should, take it to your local RadioShack
store for assistance.
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SPECIFICATIONS
Transmitter
Sensitivity:
Microphone Input ................................................................. 100 dB SPL ±5 dB
Frequency Response ......................................................................... 100–8,000 Hz
RF Output Power .......................................................................................... 18 mW
(Terminated at 50 Ohm Load)
Current Consumption ..................................................... ....... ...... . 38 mA (Average)
Battery Life (Alkaline) ................................................................. 8 Hours (Average)
Operating Frequencies:
GroupsMicrophone 1Microphone 2
1A — 169.445 MHz E — 171.045 MHz
2 D — 170.305 MHz G — 171.845 MHz
3B — 169.505 MHz H — 171.905 MHz
Total Harmonic Distortion .................................................................. 1.0% (Typical)
Power Requirements .............................................................. 12 Volts DC, 100 mA
Operating Frequencies:
Specifications ar e typical; indivi dual units m ight vary. Speci fications are su bject to
change and improvement without notice.
GroupsMicrophone 1Microphone 2
1A — 169.445 MHz E — 171.045 MHz
2 D — 170.305 MHz G — 171.845 MHz
3B — 169.505 MHz H — 171.905 MHz
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Limited One-Year Warranty
This product is warrante d by RadioSha ck against manufac turing defect s in material and wor kmanship under normal use for one (1) year from the date of purchase from RadioShack company-owned
stores and authorized RadioShack franchisees and dealers. EXCEPT AS PROVIDED HEREIN, RadioShack MAKES NO EXPRESS WARRANTIES AND ANY IMPLIED WARRANTIES, INCLUDING
THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED
IN DURATION TO THE DURATION OF THE WRITTEN LIMITED WARRANTIES CONTAINED
HEREIN. EXCEPT AS PROVIDED HEREIN, RadioShack SHALL HAVE NO L IABILITY OR RESPONSIBILITY TO CUSTOMER OR ANY OTHER PERSON OR ENTITY WI TH RESPECT TO ANY
LIABILITY, LOSS OR DAMAGE CAUSED DIRECTLY OR INDIRECTLY BY USE OR PERFORMANCE OF THE PRODUCT OR ARISING OUT OF ANY BREACH OF THIS WARRANTY, INCLUDING, BUT NOT LIMITED TO, ANY DAMAGES RESULTING FROM INCONVENIENCE, LOSS
OF TIME, DATA, PROPERTY, REVENUE, OR PROFIT OR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, EVEN IF RadioShack HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.
Some states do not allow the limitations on how long an implied warranty lasts or the exclusion of incidental or consequential damages, so the above limitations or exclusions may not apply to you.
In the event of a pr oduct defect durin g the warranty pe riod, take the pro duct and the RadioShack
sales receipt as proof of purchase date to any RadioShack store. RadioShack will, at its option, unless otherwise provid ed by law: (a) correct the def ect by p rod uct rep ai r witho ut charge for parts and
labor; (b) replace the product wi th one of the same or similar design; or (c) refund the purch ase
price. All replace d parts a nd prod ucts, and p roducts o n which a refund is made, become th e property of RadioShack. New or recond itioned parts a nd products may be used in the performance of
warranty service. Re paired or replace d parts and pro ducts are warran ted for the rem ainder of the
original warranty period. You will be charged for repair or replacement of the product made after the
expiration of the warranty period.
This warranty does not cover: (a) damage or failure caused by or attributable to acts of God, abuse,
accident, misuse, i mproper or abnormal usage, failure to fo ll ow instr uctions, improper ins tall at ion or
maintenance, altera tion, lightning or othe r incidence of excess voltage or current; (b ) any repairs
other than those provided by a RadioShack Authorized Service Facility; ( c) consumables such as
fuses or batteries; (d) cosmetic dam age; (e) tra nsportation , shipping or insurance costs; or (f) costs
of product removal, installation, set-up service adjustment or reinstallation.
This warranty give s you specific l egal rights, an d you may al so have other r ights which var y from
state to state.
RadioShack Customer Relations, 200 Taylor Street, 6th Floor, Fort Worth, TX 76102
We Service Wh at We Sell
04/99
RadioShack
A Division of Tandy Corporation
Fort Worth, Texas 76102
811081800A
07A99Printed in China
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