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©2008.

RadioShack

 Corporation. All rights reserved. 

RadioShack

 and 

RadioShack.com

 are trademarks used by 

RadioShack

 Corporation.

AO0262ADA1
Printed in China

User’s Guide

11A08
32-1258  A

What’s Included

Microphone Receiver
9V AC Adapter User’s Guide

Specifications

Frequency .............. 169.505 MHz

................................ 170.245 MHz
................................ 171.905 MHz

Operating range..200 ft (Typical)
Frequency response120–13000Hz

Microphone

RF power ..........................10dBm
Sensitivity 106dB SPL at 7kHz FM
Power source .. two AA batteries
Dimensions (Diam. × H) 2.2×9.8 in

................................(55×110 mm)

Receiver

Sensitivity with S/N 20dB......1uV
S/N ratio at 1mV RF Input.. 75dB
Image rejection................... 55dB
Line output....................... 510mV

Microphone output ........... 10mV
Power requirement.. AC adapter
Dimensions (WHD)8.9×2.2×4.3 in

.......................... (225×55×11mm)

Specifications are subject to change 
and improvement without notice. Actual 
product may vary from the images found in 
this document.

www.radioshack.com

Protect the environment by recycling 
used electronics. Go to 
E-CyclingCentral.com to find a recycle 
location near you.

170MHz VHF · Single-Channel Wireless Microphone System

Thank you for purchasing your 170 MHz VHF Single-Channel Wireless Microphone System from 

RadioShack

. Your system 

transmits microphone signals up to 200 feet away from the receiver allowing you to move freely. Please read this user’s guide 
before installing, setting up, and using your new product. See back of page for detailed instructions.

32-1258

POWER

Replace the 
batteries when the 
indicator does not 
properly light.

TALK-MUTE-OFF

LINE output jack

MICROPHONE output jack

 (Optional) 

AC adapter 

Plug into an 
outlet.

POWER

Indicator lights 
when power is on.

READY

Indicator lights when 
microphone signals 
are within range of 
the receiver.

VOLUME

Rotate to adjust 
your microphone’s 
volume.

POWER

Turn the 
receiver on/off.

SQUELCH

Rotate to limit background noise and control transmitting 
distance. To increase the transmitting distance, rotate to 

MIN

.

Shielded Audio Cable

(not included)

¼” audio cable

(not included)

Connections – Back View

DC 9V/250mA

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