FCC ID: AAO3201258T Wireless Microphone

32-1258 170MHz Single Channel Wireless Microphone System Tak f pca 170MHz Sl Cal l Mcp S f RadioShack. Your a cp al p 200 f awa from the receiver allowing you to move freely. Step 1 Set the volume to a minimum level and plug in the AC adapter. Then, using a shielded audio cable (not using a shielded audio cable (not included), connect the LINE jack on your receiver to the input jack on your amplifier, or other device. Optionally, or if the input jack is in use, you can if the input jack is in use, you can connect using the MICROPHONE jacks on your receiver and amplifier with a 1/4 audio cable (not included). Connect your receiver to the input jack on your amplifier using the LINE jack.

(Optional) Connect your receiver to your amplifier with the MICROPHONE jack. Plug the AC adapter into an outlet. NOTE Y ca cc b p jack a apl ad a cd dvc. microphone 9V AC adapter receiver users guide Please read this users guide before installing, setting up and using your new product. www.radioshack.com 2006. RadioShack Corporation. All rights reserved. RadioShack and RadioShack.com are trademarks used by RadioShack Corporation. 32-1258 04A06 AO0262AAA1 Printed in China Step 2 Unscrew the microphone grille and remove the battery cover. Insert two AA batteries with correct polarity. Then replace the battery cover and the microphone grille. Twist Step 3 Press POWER on the receiver to turn it on. The POWER indicator lights up. ully etend the antennae. ully etend the antennae. Set the volume on your PA amplifier or other audio source to a minimum level. Then turn power on. VOLUME Rotate to adjust your microphones volume. SQUELCH Rotate to limit the background noise and control the transmitting distance. To increase the transmitting distance, rotate it to MIN. POWER button POWER indicator READY indicator Step 4 Set TALK-MUTE-OFF switch to TALK. Then turn the audio source and receiver volume up to the desired level. The READY indicator light displays indicating that the microphone signals are within range of the receiver. POWER indicator Replace the batteries when light is off. TALK-MUTE-OFF NOTES To avoid the popping noise that may occur when switching from OFF to TALK, use MUTE. TALK-MUTE-OFF to OFF. T wl cp lal verify they operate at different frequencies. See your microphone or receiver for its frequency. requency ............. 169.505MHz, 170.245MHz or 171.905MHz Operating Range ............................................ 200 feet (Typical) requency Response ..........................................120---13000Hz microphone R Power ........................................................................ 10dBm Sensitivity............................................ 106 dB SPL at 7KHz M Power Source ................................................Two AA Batteries receiver Sensitivity with S/N 20dB ....................................................1uV S/N Ratio at 1mV R Input .................................................75dB Image Rejection .................................................................55dB Line Output .....................................................................510mV Microphone Output ..........................................................10mV Power Requirement ................................................ AC Adapter Spcca a pcal; dvdal a va. Spcca a bjc ca ad pv without notice. Product may vary from depiction. Warning: Modifying, tampering with, or adjusting this unit, or replacing any transmitter component (crystal, semiconductor, etc.) may result in a violation of the FCC rules. Consult your local RadioShack store or an experienced radio/TV technician for help. If you cannot eliminate the interference, the FCC requires that you stop using your microphone system. Changes or modifications not expressly approved by RadioShack may cause interference and void the users authority to operate the equipment. This device complies with Part 15 of the FCC Rules. Operation is subject to the condition that this device may not cause harmful interference. This wireless microphone system complies with Part 90 of the FCC Rules. There are three frequencies available for the system. You must obtain a license for each frequency you plan to use before operating your system. One license can include both frequencies. Visit http://wireless.fcc.gov/uls/, or call your local FCC office to apply for your license. Your ability to obtain a license will depend on how you plan to use the system. For RF exposure IMPORTANT NOTE: To comply with the FCC RF exposure compliance requirements, no change to the antenna or the device is permitted. Any change to the antenna or the device could result in the system exceeding the RF exposure requirements. For devices less than 200mW ERP SAFETY INFORMATION Your wireless microphone contains a low power transmitter. When the EUT is powered on, it sends out radio frequency (RF) signals. In August 1996, the Federal Communications Commissions (FCC) adopted RF exposure guidelines with safety levels for wireless devices. IMPORTANT To maintain compliance with the FCCs RF exposure guidelines, hold the transmitter and antenna at least 1 inch (2.5 centimetres) from your face and speak in a normal voice, with the antenna pointed up and away from the face. Ensure that the antenna is at least 1 inch (2.5 centimetres) from your body when you are using your wireless microphone. Use only the supplied antenna. Unauthorized antennas, modifications, or attachments could damage the transmitter and may violate FCC regulations. Dispose of old batteries promptly and properly. Do not burn or bury batteries. Use only fresh batteries of the required size and recommended type. Do not mix batteries of different sizes or types. If you do not plan to use your microphone system for a v ba. Ba ca lak chemicals that can damage electronic parts. This product is warranted by RadioShack against manufacturing defects in material and workmanship under normal use for one (1) year from the date of purchase from RadioShack company-owned stores and authorized RadioShack franchisees and dealers. For complete warranty details and exclusions, check with your local RadioShack store. RadioShack Customer Relations 300 RadioShack Circle, Fort Worth, TX 76102 04/04 whats includedbattery notesspecificationsrf emission informationlimited one-year warranty

Report No.: 0602986 INTERTEK TESTING SERVICE Equipment Photographs Model : 32-1258

(Internal) FCC ID: AAO3201258T Report No.: 0602986 INTERTEK TESTING SERVICE Equipment Photographs Model : 32-1258

(Internal) FCC ID: AAO3201258T Report No.: 0602986 INTERTEK TESTING SERVICE Equipment Photographs Model : 32-1258

(Internal) FCC ID: AAO3201258T Report No.: 0602986 INTERTEK TESTING SERVICE Equipment Photographs Model : 32-1258

(Internal) FCC ID: AAO3201258T Report No.: 0602986 INTERTEK TESTING SERVICE Equipment Photographs Model : 32-1258

(Internal) FCC ID: AAO3201258T Report No.: 0602986 INTERTEK TESTING SERVICE Equipment Photographs Model : 32-1258

(Internal) FCC ID: AAO3201258T

Report No.: 0602986 INTERTEK TESTING SERVICE Equipment Photographs Model : 32-1258

(External) FCC ID: AAO3201258T Report No.: 0602986 INTERTEK TESTING SERVICE Equipment Photographs Model : 32-1258

(External) FCC ID: AAO3201258T

Frequency label (1,2,3) (24.0x8.0 mm) Color: white text on black background The other two different frequency label as below. 171.905 MHz 170.245 MHz 1.5V x 2 Cat. No. 32-1258 Wireless Microphone Custom Manufactured in China for RadioShack Corporation, Fort Worth, Texas 76102 AA OR EQUIVALENT z H M 5 0 5

. 9 6 1 RATING LABEL ( 27.5 X 9.5 mm ) Color: white text on black background SERIAL NO. LABEL SERIAL NO. XXXXXXX Q. C. 03A06 TEC Q.C label

:

D I C C F T 8 5 2 1 0 2 3 O A A 32-1258 TX label and location SCALE 1:1 FCC NO. Engraving A

:

DI C C F OA 3 2 0 1 2 5 8 T revise a/w to path Generated Label a/w DESCRIPTION ZONE 32-1258 USA TX bottom cabinet (Engraving) DRAFT OR A/W CHECKED APPROVED DATE B A REV ECN NO. MODEL DEST PART NAME PART NO. DWG. NO. ART NO. E01258P04B SCALE PLS RETURN IMMEDIATELY AFT FILMED YCWu 4/24/06 2/8/06 YCWu DRAFT DATE YCWu 2/8/06 1:1

Circuit Description Theory of Operations Circuit Description Transmitter(TX):

1.Audio Amplifier and Compressor Audio signal from dynamic Mic is amplified by Q200 Q201. Compressor IC U200(GL6552D) will increase the dynamic range of the voice signal . C225 R226 R227 are the Pre-emphasis circuit and the audio signal is amplified further by Q205. Adjust VR200 to control the Modulation Deviation. 2.ALC Circuit ALC circuit are built by Q202 D200 Q203 and Q204, it will improve further the dynamic range of the voice. 3.Power and Low Battery Circuit U201 D201 and L201 etc. are 5V DC-DC convertor circuit for all circuit to provide DC power. Q206 Q207 and Q208 will control the Power LED D202, the LED will light off if the battery is weak. 4.Switch Control SW200 is Talk/Mute/OFF slide control switch. 5.RF Oscillator and Amplifier RF oscillator are built by Q100 X100(three frequencies:

14.1254MHz/14.1871MHz/14.3254MHz) L101 D101 D102 and L100 etc. same times they will modulated with audio signal and selects the desired frequency at this stage, Q101 is buffer amplifier, Fil100 will filter further those unwanted carriers frequency, Q102 Q103 amplifier stage provide the maximum RF power. FCC ID: AAO3201258T

Cat No. : 32-1258 Recommended Test Devices:

HP8920: RFCTS HP8591: RFSA DC Power BNC cable Recommended Alignment Conditions:

Supply Voltage Receiver: Recommended AC-DC adapter or 12V0.2V DC Power Transmitter: 3.0 0.05V DC Alignment Procedures Transmitter Section Frequency Accuracy Adjustment 1. Connect a BNC cables opened end to P5 point by soldering and others BNC terminal connect to the RFIN of the RFSA. 2. Turn on the DC power and set the SW200 (OFF/MUTE/TALK) to MUTE mode, LED D202 lights on. 3. Set the RFSA as below:

Center freq: UUTs channel frequency Span: 50KHz 4. Adjust L201 and VR100 until the desired frequency +/- 1KHz is obtained from the RFSA. Distortion Tuning 1. Connect a BNC cables opened end to P5 point by soldering and others BNC terminal connect to the RFIN of the RFCTS. FCC ID: AAO3201258T 2. Connect a BNC cables opened end to MIC+ and MIC- and others BNC terminal connect to the AUDIO OUT of the RFCTS. 3. Setup the RFCTS as follow:

TX mode Filter: 300-3KHz Emphasis: ON IF filter: 230KHz AUDIO OUT : 9.5mV 4. Turn on the DC power and set the SW200 (OFF/MUTE/TALK) to TALK mode, LED D202 lights on. 5. Adjust VR200 until 7KHz deviation is obtained, read the distortion from the RFCTS which will be 2% . 6. If the distortion is bigger than 2%, adjust VR100 until the desired value is obtained. Mike Sensitivity Tuning 1. Setup the RFCTS as follow:

TX mode Filter: 300-3KHz Emphasis: OFF IF filter: 230KHz ANT IN 2. Insert an antenna to ANT In of the RFCTS. 3. Adjust the Speaker Level of the Test jig to 106dBspl . 4. Put the UUT into the Test Jig and set the SW200 (OFF/MUTE/TALK) to TALK mode. 5. Adjust VR200 until 7KHz deviation is obtained. FCC ID: AAO3201258T