ONKAT-100BVHF TRANSCEIVER

User’s Manual Land Mobile Radio (LMR) Model: AT-100 A/B AT-200AT-400 A/B Airtech Information & Communication Co., Ltd. AIRTECH INFORMATION & COMMUNICATION CO., LTD.FCC ID: ONKAT-100BJOB #: 606BK0EXHIBIT #: 6A GENERAL FEATURES ................................................. 2UNPACKING .................................................................. 3OPTIONAL ACCESSORIES ......................................... 3 GETTING READY.......................................................... 3DESCRIPTION............................................................... 4LCD PANEL ................................................................... 5OPERATION .................................................................. 6ADDITIONAL FUNCTION ............................................. 7 CHARGER AND BATTERY .......................................... 8SPECIFICATIONS ......................................................... 8 General Features 1. Ultra compact design & size (102 x 50 x 36mm, 310g with high capable battery)2. Heavy durable construction3. 90 channels4. Alphanumeric LCD display up to 6 characters5. 38 CTCSS/ 83 CDCSS6. PC Programmable, transferable by cloning7. Time-out timer (TOT)8. Busy channel lock-out (BCLO)9. Battery saving mode10. Low battery alert11. 2/5 tones programmable12. 12.5KHz/25KHz channel spacing programmable13. DTMF PTT-ID14. Button lockable15. Talking range to 5 miles16. Transmit output power High/Low17. DC7.5V Ni-MH battery AIRTECH INFORMATION & COMMUNICATION CO., LTD.FCC ID: ONKAT-100BJOB #: 606BK0EXHIBIT #: 6B       UnpackingUnpack and check that all items have been enclosed.Packing contents:  radio  antenna  battery pack (1,350 mAH)  belt clip  hand strap  charger  user’s manual Optional Accessories1. External earphone & MIC. (APE–10)2. Additional battery pack (720 mAH, HM–720) Getting Ready1. Installation, Removal Belt Clip Installation : align the belt clip with the plastic slots of the battery pack.Slide the belt clip onto the batterypack, pushing firmly until a clickheard.Removal : hold up the belt clip release tab with a fingernail or acoin (or like instrument). Whileholding up the release tab, slide the belt clip out andaway from the battery pack. 2. Installation, Removal Battery Pack Installation : turn off the transceiver. Hold the transceiver with the back of the unit facing up.Place the battery pack against theback of the transceiver so that thetabs on the transceiver engage thefour openings in the battery pack.Slide the battery pack toward thetop of the transceiver until a clickheard.Removal : turn off the transceiver. Hold the radio with the back of the unit facing up. Withthe thumbnail of your other hand slide the latch leverdown. While holding the latch lever down, slide thebattery pack down toward the bottom of the transceiver.Separate the battery pack from the transceiver. 3. Installation Antenna Rotate the antenna clockwise untilit is seated firmly.*. Before your starting operation, makesure the battery is fully charged. AIRTECH INFORMATION & COMMUNICATION CO., LTD.FCC ID: ONKAT-100BJOB #: 606BK0EXHIBIT #: 6C Description Power on / off and Volume Control Switch Turn the transceiver on by rotating power on / off and volume control switch clockwise and control the volume.  Channel Select Button Select the desired channel with pressing Up and Dow nbutton, pressing and holding dow n more than 1 secondmakes the channel moving fast. And you can choose Onor Off in function mode.  PTT(Push To Talk) Button Hold down to transmit, release to receive.  Function Button Refer to “OPERATION” page 7.  Monitor Button Press to monitor. Holding down over 2 seconds keepsmonitoring function on, and press shortly again or PTTButton to stop.  LCD Display Panel Refer to next page.  Tx / Rx Indicate LED (3 colors) On Transmitting Red Blinking Low battery On Receiving, monitoring Green Blinking Different sub-tone when receiving Orange On Initializing, programming andcloning  Microphone Talk 5~7Cm in distance during transmitting.  Speaker  External Earphone/MIC and Programming Jack Socket  Battery Pack  Helical Antenna        AIRTECH INFORMATION & COMMUNICATION CO., LTD.FCC ID: ONKAT-100BJOB #: 606BK0EXHIBIT #: 6D LCD PanelDISPLAY FUNCTION T Sub-tone SCN Sca nni ng H L Transmitt output power  Beep sound ! Button lockChannelOnOffPTT-ID AbnormalAbnormalProgramCloneClo ni ng fi nis hedCloning processing (movesrightward) AIRTECH INFORMATION & COMMUNICATION CO., LTD.FCC ID: ONKAT-100BJOB #: 606BK0EXHIBIT #: 6E Operation1. Power Turn on / off and Volume Control Rotate the Power on/off and Volume Control Switch  clockwise to turn power on, then the LED  lights orange and power–up tone is generated after about on second,indicating the transceiver has passed the self–diagnostic.When you turn on the transceiver, it comes samechannel and function with your last using. Rotate thisswitch  clockwise to increase the volume or counterclockwise to reduce the volume. Rotate it  counterclockwise fully to turn power off. 2. Transmit Choose the channel by pressing Channel Select Button  as you desire. Hold dow n the PTT Button  and talk to MIC  in 5~7Cm distance. The LED  lights red on transmitting. Release the PTT button  to stop transmitting. 3. Receive Choose the channel by pressing Channel Select Button  as you desire. The LED  lights green on receiving. In case the signal doesn’t match in using sub–tone, greenlight blinks. 4. Monitor Press the Monitor Button  to monitor. Holding down Monitor Button  over 2 seconds keeps monitoring function on, and press Monitor Button  shortly or press PTT Button  to stop. 5. Scan Press Channel Select Button
 while holding down Function Button  to start scanning forward increasing channels. In case Priority Scan not settled down1) mem 1ch > mem 2ch > mem 3ch > .....In case 1 cannel of Priority Scan is settled down2) mem 1ch > pri ch > mem 2ch > pri ch > .....In case 2 cannels of Priority Scan a…

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CONTENTS GENERAL FEATURES ................................................. 1UNPACKING .................................................................. 2OPTIONAL ACCESSORIES ......................................... 2 GETTING READY.......................................................... 2DESCRIPTION............................................................... 2LCD PANEL ................................................................... 4OPERATION .................................................................. 5ADDITIONAL FUNCTION ............................................. 6 CHARGER AND BATTERY .......................................... 7SPECIFICATIONS ......................................................... 7 General Features 1. Ultra compact design & size (102 x 50 x 36mm, 310g with high capable battery)2. Heavy durable construction3. 90 channels4. Alphanumeric LCD display up to 6 characters5. 38 CTCSS/ 83 CDCSS6. PC Programmable, transferable by cloning7. Time-out timer (TOT)8. Busy channel lock-out (BCLO)9. Battery saving mode10. Low battery alert11. 2/5 tones programmable12. 12.5KHz/25KHz channel spacing programmable13. DTMF PTT-ID14. Button lockable15. Talking range to 5 miles16. Transmit output power High/Low17. DC7.5V Ni-MH battery       UnpackingUnpack and check that all items have been enclosed.Packing contents:  radio  antenna  battery pack (1,350 mAH)  belt clip  hand strap  charger  user’s manual Optional Accessories1. External earphone & MIC. (APE–10)2. Additional battery pack (720 mAH, HM–720) Getting Ready1. Installation, Removal Belt Clip Installation : align the belt clip with the plastic slots of the battery pack.Slide the belt clip onto the batterypack, pushing firmly until a clickheard.Removal : hold up the belt clip release tab with a fingernail or acoin (or like instrument). Whileholding up the release tab, slide the belt clip out andaway from the battery pack. 2. Installation, Removal Battery Pack Installation : turn off the transceiver. Hold the transceiver with the back of the unit facing up.Place the battery pack against theback of the transceiver so that thetabs on the transceiver engage thefour openings in the battery pack.Slide the battery pack toward thetop of the transceiver until a clickheard.Removal : turn off the transceiver. Hold the radio with the back of the unit facing up. Withthe thumbnail of your other hand slide the latch leverdown. While holding the latch lever down, slide thebattery pack down toward the bottom of the transceiver.Separate the battery pack from the transceiver. 3. Installation Antenna Rotate the antenna clockwise untilit is seated firmly.*. Before your starting operation, makesure the battery is fully charged. Description  Power on / off and Volume Control Switch Turn the transceiver on by rotating power on / off andvolume control switch clockwise and control the volume.  Channel Select Button Select the desired channel with pressing Up and Dow nbutton, pressing and holding dow n more than 1 secondmakes the channel moving fast. And you can choose Onor Off in function mode.  PTT(Push To Talk) Button Hold down to transmit, release to receive.  Function Button Refer to “OPERATION” page 7.  Monitor Button Press to monitor. Holding down over 2 seconds keepsmonitoring function on, and press shortly again or PTTButton to stop.  LCD Display Panel Refer to next page.  Tx / Rx Indicate LED (3 colors) On Transmitting Red Blinking Low battery On Receiving, monitoring Green Blinking Different sub-tone when receiving Orange On Initializing, programming andcloning  Microphone Talk 5~7Cm in distance during transmitting.  Speaker  External Earphone/MIC and Programming Jack Socket  Battery Pack  Helical Antenna LCD PanelDISPLAY FUNCTION T Sub-tone SCN Sca nni ng H L Transmitt output power  Beep sound ! Button lockChannelOnOffPTT-ID AbnormalAbnormalProgramCloneClo ni ng fi nis hedCloning processing (movesrightward) Operation1. Power Turn on / off and Volume Control Rotate the Power on/off and Volume Control Switch  clockwise to turn power on, then the LED  lights orange and power–up tone is generated after about on second,indicating the transceiver has passed the self–diagnostic.When you turn on the transceiver, it comes samechannel and function with your last using. Rotate thisswitch  clockwise to increase the volume or counterclockwise to reduce the volume. Rotate it  counterclockwise fully to turn power off. 2. Transmit Choose the channel by pressing Channel Select Button  as you desire. Hold dow n the PTT Button  and talk to MIC  in 5~7Cm distance. The LED  lights red on transmitting. Release the PTT button  to stop transmitting. 3. Receive Choose the channel by pressing Channel Select Button  as you desire. The LED  lights green on receiving. In case the signal doesn’t match in using sub–tone, greenlight blinks. 4. Monitor Press the Monitor Button  to monitor. Holding down Monitor Button  over 2 seconds keeps monitoring function on, and press Monitor Button  shortly or press PTT Button  to stop. 5. Scan Press Channel Select Button
 while holding down Function Button  to start scanning forward increasing channels. In case Priority Scan not settled down1) mem 1ch > mem 2ch > mem 3ch > .....In case 1 cannel of Priority Scan is settled down2) mem 1ch > pri ch > mem 2ch > pri ch > .....In case 2 cannels of Priority Scan are settled down 3) mem 1ch > pri 1ch > pri 2ch > mem 2ch > ..... The transceiver stops scanning after detecting a signaland returns a receiving mode in the channel if the signalkeeps for 2 seconds. Or re-start scanning automatically.And if detecting a signal while scanning, but in case of nomatching sub-tone, re-starting scanning with a delayedPress Channel Select Button
 to skip the channel. And if you press Channel Select Button   when the transceiver is receiving a signal in a channel whilescanning, the transceiver doesn’t scan the same channelin the next. And if …

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3. THEORY OF OPERATION INTRODUCTION AT-100B is a micro size 90 channel portable FM transceiver constructed w ith a microprocessor controlled, temperature compensated Phase Locked Loop (PLL) frequency synthesizer. The radio features a double conversion receiver and a direct FM transmitter modulator. A special integrated circuit provides support to sub-audible signaling (CTCSS & DCS) and most of the receiving parts are switched off periodically in the power saver mode to reduce battery current drain during standby. The Block Diagram RF and Control Circuit Diagrams for AT-100B shall be used in associate w ith the follow ing circuit description. CIRCUIT DESCRIPTIONS 1) PHASE-LOCK LOOP (PLL) CIRCUIT * REFERENCE OSCILLATOR The reference oscillator consists of TCX301 in U301 with a frequency of 12.8MHz. This comparison frequency is selected by decoding the first three bits of the data input from microcomputer. * PROGRAMMABLE DIVIDER The programmable divider in U301 consists of a two-modulus prescaler with a 7 bit control register followed by a 11-bit internal programmable divider. The overall division ratio is selected by a single 19-bit world located on the serial data bus. * PHAS E CO M P AR AT O R A digital-type phase comparator in U301 with output(pin 6) and an open drain lock detect output(pin 8) compares divided VCO frequency with the comparison frequency. It generates a correction voltage that is applied to a low-pass filter consisting of R309, R310, R312 and C315, C316, C318 then sent to the VCO circuit. * VCO CIRCUIT The transmit/receive frequency is directly generated by the Colpitts oscillation circuit contains Q401, Q405. The oscillation frequency is variable by applying the VCO control voltage to variable to variable capacitors D401, D402, D403, D404, D405, D406, D407,D408 and D409. To switch between the transmit and receive frequencies, Q406 turn on, and Q402 (VCO for transmission) oscillates when the T/R pin is low. 2) TRANSMITTER * MIC AMP CIRCUIT Voice signal from the microphone are applied to microphone amplifier U601 pin 6 through J601 pin 5. U601 contains a low-pass filter that has a 6dB/oct response between 300Hz and 3kHz, and eliminates harmonics above 3 kHz. The pre-emphasized audio signal is applied to VR303 from U606 pin 22 to adjust maximum frequency deviation. * VCO AND AMPLIFIER The VCO signal output is amplified by Q403, Q408 and then fed to power amplifier Q301. AIRTECH INFORMATION & COMMUNICATION CO., LTD. FCC ID: ONKAT-100B JOB #: 606BK0 EXHIBIT #: 7A * POWER AMPLIFIER CIRCUIT Q202 provides approximately 7.5V DC power source. Amplified transmit signal is applied to the base of the first stage amplifier of U201 through capacitor C223. RF power output is adjusted by variable resistors VR501 (High Power) and VR502 (Low Power). Signals from U201 are supplied through antenna switch D201 to a low-pass filter made up of L201, L202, L203 and C202-C206, then applied to Antenna Jack. 3) RECEIVER * ANTENNA SWITCHING CIRCUIT Signals from antenna connector fed to the antenna switching circuit through the low pass filter consisting of L201, L202, L203 and C202-C206. In receive mode, D201 is turned off, isolates the antenna from the transmitter circuit and matching circuitry, so that the incoming signals are fed to the RF amplifier through L101. * RF AMPIFIER CIRCUIT The signals from the switching circuit are fed to the RF amplifier Q101 through a band pass filter made up of T101, D103, D104, T102 and D105, D106. * FIRST MIXER CIRCUIT The amplified signals are fed to Gate 1 of the first mixer Q102 through T103, T104 and D111- D114. First local oscillator signal is supplied to Gate 2 of Q408 form the PLL circuit through C125 to convert the RF signals into 21.4MHz first IF signal. The VCO oscillates at the first local frequency. * IF CIRCUIT The first IF signals from Q102 are fed to the matched pair crystal filter FL101, then IF signals are amplified in Q103. And those signals are fed to U101 which is composed of the second local oscillator, second mixer, limiter amplifier, quadrature detector and active filter circuit. The second local oscillator at 20.945MHz with X102,and is fed to the second mixer with the first IF signals to convert into 455kHz second IF signals. The second IF signals leave through pin 3,and are fed to external ceramic filter FL102 and FL122 which has excellent selectivity, then fed to U101 (pin 5) again to be amplified and detected. The detected AF signals are output from pin 9. * AUDIO AND SQUELCH CIRCUIT The detected audio signals are put through a 6dB/oct de-emphasis circuit made up of C673 and R688. The signal is then applied to audio power amplifier U606 through the volume control SVR601 to obtain enough power to driver the speaker. Part of the recovered noise signal is fed to the integrated operational amplifier inside U101, which, with R117 and C150, makes up an active filter that rejects audio signals through high pass filter C148, C149 and R122. The sensitivity of squelch is adjusted by VR101. AIRTECH INFORMATION & COMMUNICATION CO., LTD. FCC ID: ONKAT-100B JOB #: 606BK0 EXHIBIT #: 7B

4. Adjustment Procedure Measurement Condition The follow ing setions describes the alignment procedure for AT-100B LMR transceiver under the following reference environment conditions: Temperature:25! C ( 77! F) Relative Humidity:65% Pow er Supply Voltage:7.5VDC +/- 5% Test Equipment / Tools required The follow ing list of equipment is recommended for use in setting up the radio properly. Please ensure the test equipment are calibrated according to the manufacturer’s instructions: - Frequency counter more than 300MHz +/-100Hz tolerance, high input impedance and high sensitivity - VHF FM Signal generator, 300MHz w ith adjustable frequency, FM deviation, and RF output attenuators. 50Ω Output impedance. - Oscilloscope, high input impedance. - 16Ω 1 Watt resistor as loudspeaker load - Audio Signal Generator, 10Hz to 20KHz, 600Ω impedance with attentuators. - RF Watt meter, with 50Ω 5 Watt termination resistor (Or RF Voltmeter with 50Ω termination and external 50Ω attenuators) - Regulated Power Supply 7.5VDC 3A output - Digital A-V-O Multi-meter - SI NAD Meter - External Speaker Mic plug (or special audio test jig) - Interconnection test cable for RF and Control PCB - Circuit Diagram for AT-100B - PCB layout diagram for AT-100B - Tuni ng tools for RF/IF transformer and the VR potentiometers Disassembling the unit The antenna Disconnect the antenna The Cover - Remove the battery. - Remove the 2 screw s. - The case could then be opened for servicing. - Be careful NOT to disconnect the flexible connector between RF board and Control board. The PCBs - The radio consists of tw o PCBs, the RF (rear side) and control board (front side). - On the RF Board, connect ANT1 to a signal generator or RF pow er meter. - On the RF Board, connect Power Supply to the battery terminal contacts. - Connect External Speaker Mic Plug (or Audio Test Jig) to J601. AIRTECH INFORMATION & COMMUNICATION CO., LTD. FCC ID: ONKAT-100B JOB #: 606BKO EXHIBIT #: 8A Transmitter Circuit Adjustment - Crystal frequency On receiving mode, check Crystal output is at 12.8MHz - Transmitter Frequency Connect RF Power meter to ANT1, Activate PTT to transmit on 150MHz. check transmitting frequency error is within +/- 300Hz. - Transmitter Output Power Activate PTT to transmit on 150MHz, Set VR501 for 5W power output at ANT1. And Set VR502 for 2W power output at ANT1 after changing Low power output mode. - Transmitter Sub-Audible Tone Deviation Set radio to transmit on 150MHz, with CTCSS code 38 (250.3Hz) and no audio modulation. Adjust VR302 for 0.6KHz deviation. - Transmitter Deviation Limit Set radio to transmit on 150MHz, with CTCSS code 38 (250.3Hz) and no audio modulation. At the external microphone input, inject 1KHz tone at –20dBm. Adjust VR303 for 4KHz deviation. Reduce 1KHz tone input to –40dBm, check deviation dropped to 2.4 to 4KHz. Receiver Circuit Adjustment - FM Demodulator Adjustment Set radio to receive on 150MHz, No CTCSS or DCS. Connect RF Signal Generator to ANT1, Set generator to 150MHz at –60dBm (50Ω) output w ith 1KHz tone modulation at 3KHz deviation. - Receiver Sensitivity After adjusting the FM demodulator, reduce the output level of RF Signal Generator. Check the receiver sensitivity at 12dB SINAD to be around –119dBm. Adjust T101~104 if necessary to bring up the sensitivity. - Receiver Squelch Adjustment After checking the receiver sensitivity, further lower the RF Signal Generator output to 8-10dB SINAD and observe the squelch circuit operates. Adjust VR101 if necessary. 5. Operational Test Conduct operational test on all the major features and transmit/receive on all the channels. Observe all LCD/LED displays and alert tones are operative and all the buttons are functional. Refer to user manual for details. AIRTECH INFORMATION & COMMUNICATION CO., LTD. FCC ID: ONKAT-100B JOB #: 606BKO EXHIBIT #: 8B

4. Adjustment Procedure Measurement Condition The follow ing setions describes the alignment procedure for AT-100B LMR transceiver under the following reference environment conditions: Temperature:25! C ( 77! F) Relative Humidity:65% Pow er Supply Voltage:7.5VDC +/- 5% Test Equipment / Tools required The follow ing list of equipment is recommended for use in setting up the radio properly. Please ensure the test equipment are calibrated according to the manufacturer’s instructions: - Frequency counter more than 300MHz +/-100Hz tolerance, high input impedance and high sensitivity - VHF FM Signal generator, 300MHz w ith adjustable frequency, FM deviation, and RF output attenuators. 50Ω Output impedance. - Oscilloscope, high input impedance. - 16Ω 1 Watt resistor as loudspeaker load - Audio Signal Generator, 10Hz to 20KHz, 600Ω impedance with attentuators. - RF Watt meter, with 50Ω 5 Watt termination resistor (Or RF Voltmeter with 50Ω termination and external 50Ω attenuators) - Regulated Power Supply 7.5VDC 3A output - Digital A-V-O Multi-meter - SI NAD Meter - External Speaker Mic plug (or special audio test jig) - Interconnection test cable for RF and Control PCB - Circuit Diagram for AT-100B - PCB layout diagram for AT-100B - Tuni ng tools for RF/IF transformer and the VR potentiometers Disassembling the unit The antenna Disconnect the antenna The Cover - Remove the battery. - Remove the 2 screw s. - The case could then be opened for servicing. - Be careful NOT to disconnect the flexible connector between RF board and Control board. The PCBs - The radio consists of tw o PCBs, the RF (rear side) and control board (front side). - On the RF Board, connect ANT1 to a signal generator or RF pow er meter. - On the RF Board, connect Power Supply to the battery terminal contacts. - Connect External Speaker Mic Plug (or Audio Test Jig) to J601. AIRTECH INFORMATION & COMMUNICATION CO., LTD. FCC ID: ONKAT-100B JOB #: 606BKO EXHIBIT #: 8A Transmitter Circuit Adjustment - Crystal frequency On receiving mode, check Crystal output is at 12.8MHz - Transmitter Frequency Connect RF Power meter to ANT1, Activate PTT to transmit on 150MHz. check transmitting frequency error is within +/- 300Hz. - Transmitter Output Power Activate PTT to transmit on 150MHz, Set VR501 for 5W power output at ANT1. And Set VR502 for 3W power output at ANT1 after changing Low power output mode. - Transmitter Sub-Audible Tone Deviation Set radio to transmit on 150MHz, with CTCSS code 38 (250.3Hz) and no audio modulation. Adjust VR302 for 0.6KHz deviation. - Transmitter Deviation Limit Set radio to transmit on 150MHz, with CTCSS code 38 (250.3Hz) and no audio modulation. At the external microphone input, inject 1KHz tone at –20dBm. Adjust VR303 for 4KHz deviation. Reduce 1KHz tone input to –40dBm, check deviation dropped to 2.4 to 4KHz. Receiver Circuit Adjustment - FM Demodulator Adjustment Set radio to receive on 150MHz, No CTCSS or DCS. Connect RF Signal Generator to ANT1, Set generator to 150MHz at –60dBm (50Ω) output w ith 1KHz tone modulation at 3KHz deviation. - Receiver Sensitivity After adjusting the FM demodulator, reduce the output level of RF Signal Generator. Check the receiver sensitivity at 12dB SINAD to be around –119dBm. Adjust T101~104 if necessary to bring up the sensitivity. - Receiver Squelch Adjustment After checking the receiver sensitivity, further lower the RF Signal Generator output to 8-10dB SINAD and observe the squelch circuit operates. Adjust VR101 if necessary. 5. Operational Test Conduct operational test on all the major features and transmit/receive on all the channels. Observe all LCD/LED displays and alert tones are operative and all the buttons are functional. Refer to user manual for details. AIRTECH INFORMATION & COMMUNICATION CO., LTD. FCC ID: ONKAT-100B JOB #: 606BKO EXHIBIT #: 8B

Safety Information For FRS UNIT Your wireless handheld portable transceiver contains a low power transmitter. When the Push-to Talk(PTT) button is pushed it sends out radio frequency (RF) signals. This device is authorized to operate at a duty factor not to exceed 50%. In August 1996, the Federal Communications Commission (FCC) adopted RF exposure guidelines with safety levels for hand-held wireless devices. Important Note: To maintain compliance with the FCC’s RF exposure guidelines, hold the transmitter and antenna at least 1 inch (2.5 centimeters) from your face and speak in a normal voice, with the antenna pointed up and away from the face. If you wear the handset on your body while using the headset accessory, use only the manufacturers supplied belt clip for this product and ensure that the antenna is at least 1 inch(2.5 centimeters) from your body when transmitting. Use only the supplied antenna. Unauthorized antennas, modifications, or attachments could damage the transmitter and may violate FCC regulations. THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDERSIRED OPERATION .

Safety Information Your wireless handheld portable transceiver contains a low power transmitter. When the Push-to Talk(PTT) button is pushed it sends out radio frequency (RF) signals. This device is authorized to operate at a duty factor not to exceed 50%. In August 1996, the Federal Communications Commission (FCC) adopted RF exposure guidelines with safety levels for hand-held wireless devices. Important Note: To maintain compliance with the FCC’s RF exposure guidelines, hold the transmitter and antenna at least 1 inch (2.5 centimeters) from your face and speak in a normal voice, with the antenna pointed up and away from the face. If you wear the handset on your body while using the headset accessory, use only the manufacturers supplied belt clip for this product and ensure that the antenna is at least 1 inch(2.5 centimeters) from your body when transmitting. Use only the supplied antenna. Unauthorized antennas, modifications, or attachments could damage the transmitter and may violate FCC regulations.

CELLTECH RESEARCH INC. Test Report S/N: 072601-136ONK 1955 Moss Court, Kelowna Date(s) of Tests: July 30, 2001 B.C. Canada V1Y 9L3 FCC SAR Measurements _____________________________________________________________________________________________________________ © 2001 Celltech Research Inc. CERTIFICATE OF COMPLIANCE SAR EVALUATION This wireless portable device has been shown to be compliant for localized Specific Absorption Rate (SAR) for controlled environment / occupational exposure limits specified in ANSI/IEEE Std. C95.1-1992 and has been tested in accordance with the measurement procedures specified in ANSI/IEEE Std. C95.3-1999. I attest to the accuracy of data. All measurements were performed by me or were made under my supervision and are correct to the best of my knowledge and belief. I assume full responsibility for the completeness of these measurements and vouch for the qualifications of all persons taking them. Celltech Research Inc. certifies that no party to this application has been denied FCC benefits pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 853(a). Shawn McMillen General Manager Celltech Research Inc. Test Lab: CELLTECH RESEARCH INC. Testing and Engineering Lab 1955 Moss Court Kelowna, B.C. Canada V1Y 9L3 Phone: 250 - 860-3130 Fax: 250 - 860-3110 Toll Free: 1-877-545-6287 e-mail: [email protected] web site: www.celltechlabs.com Applicant Information: AIRTECH INFORMATION & COMMUNICATIONS CO., LTD. 101-807 Techno Park Complex, 364 Samjung-dong, Ojung-ku Puchon-Si, Kyungki-do, Korea FCC ID: ONKAT-100B Model(s): AT-100B EUT Type: Portable VHF PTT Radio Transceiver Modulation: FM (VHF Band) Tx Frequency Range: 150 - 174 MHz Conducted Power Tested: 5.0 Watts No. of Channels: 90 FCC Rule Part(s): 2.1093; ET Docket 96-326 CELLTECH RESEARCH INC. Test Report S/N: 072601-136ONK 1955 Moss Court, Kelowna Date(s) of Tests: July 30, 2001 B.C. Canada V1Y 9L3 FCC SAR Measurements _____________________________________________________________________________________________________________ © 2001 Celltech Research Inc. TABLE OF CONTENTS 1.0 INTRODUCTION.................................................................. 1 2.0 DESCRIPTION OF EUT.......................................................... 1 3.0 SAR MEASUREMENT SYSTEM ............................................. 2 4.0 MEASUREMENT SUMMARY.................................................. 3-4 5.0 DETAILS OF SAR EVALUATION............................................ 5 6.0 EVALUATION PROCEDURES................................................. 5 7.0 SAR LIMITS........................................................................ 6 8.0 SYSTEM VALIDATION.......................................................... 6 9.0 SIMULATED EQUIVALENT TISSUES...................................... 7 10.0 TISSUE PARAMETERS....................…

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