R72IS100FM Handheld Transceiver

Table of Contents 1. Introduction 2. Description of Unit 3. Technical Specifications 4. Theory of Operation 5. Circuit Descriptions 6. Parts List 7. Block Diagram 8. CONTROL Layout (Upper Side) 9. CONTROL Layout (Bottom Side) 10. RF Layout (Upper Side) 11. RF Layout (Bottom Side) 12. Circuit Diagram 1. Introduction IS100 has a compact size with a various features in the range of 136~174MHz. IS100 Has a various features shown as below. IS100 constructed with 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 save mode to reduce battery current drain during standby. 2. Description of Unit Items Model Radio IS100 Antenna IA-156 1700mAh Li-Ion battery pack BL 1700 Desktop rapid charter IC-170 Adaptor Supplied Package User manual Items Model External / Speaker MicrophoneES-1 Earpiece Microphone EP-1 Earpiece VOX Microphone EV-1 Accessories VOX & PTT Headset VP-1 3. Technical Specifications 3-1 General 1) Frequency range : 136~174 MHz 2) Channels : 255 Channels 3) Channel spacing : 12.5 kHz/25 kHz 4) Communication method : Simplex 5) Antenna Impedance : 50 ohm 6) Antenna : Helical Antenna 7) Power supply voltage : LI-1700mAh Li-Ion battery pack(Voltage: 7.4V DC) 8) Current Drain : When Transmitting(5W) - < 2A When Receiving(0.5W) - < 300mA Transmit standby - < 60mA Receiver standby(PSC MODE) - < 50mA 9) Microphone : Internal Condenser Microphone(External Speaker Micro phone is available) 10) Operating temperature range: -30 +60 11) Size : 56(W)x100(H)x34(D) 12) Weight : 285g 3-2 Transmitter 1) Power Output : HIGH – 5W, LOW - 1W 2) Modulation : 8K5OF3E/16KOF3E 3) Oscillator method : PLL 4) Frequency Stability : less than ±0.00025% (±2.5PPM) 5) Maximum frequency deviation: ±2.5 kHz(Narrow)/ ±5 kHz(Wide) 6) Audio Distortion : less than 5% (1 kHz 60%) 7) SPURIOUS Emission : -65 [dBc] 8) FM Hum & Noise : -40 [dB] (HP8920A 300Hz 3kHz BPF) 9) BAND SPREAD : 38 [MHz] 3-3 Receiver 1) Receiver Type : Double Super Hetero type 2) Sensitivity : -0.25uV (12dB SINAD ) 3) Frequency Stability : ±0.00025%(±2.5PPM) 4) SPURIOUS Rejection : -60 dB 5) Adjacent Channel Selectivity: -60 dB (Narrow) , -70 dB (Wide) 6) Distortion : 5% (1 kHz 60%) 7) Hum & Noise : -40 dB(HP8920A 300Hz 3kHz BPF) 8) Audio output : 1000 mW 9) BAND SPREAD : 38MHz 10) Speaker size : 45 pi 4. Theory of Operation EXTERNAL VIEW 4-1 Features & Operation 1. Monitor Press the Monitor key momentarily to disable the Tone squelch. 2. Radio Call By using Various 5Tone, individual / Group call is available. 16 Receiving codes are available as well as open call. 3. Missed calls list 16 Missed calls can be listed. If a call remains unanswered, the call will be stored by the radio. 4. contact list During a call, the contact list may be used to give access to up to 16 preprogrammed numbers accessed via the menu. 5. status list A status is a code for transmitting prearranged messages, e.g. status “05” may indicate “launch”. Status list contains up to 30 entries. 6. Channel : 255 channel 7. Scan ON/off 8. Power level : Power level is adjustable in each channel respectively. 9. Talkaround on/off 10. Emergency : 11. Lone Worker 12. Tx Tone select : In the menu, tx dcs /ctcss tone is adjustable. 13. Rx Tone select : In the menu, rx dcs /ctcss tone is adjustable. 14. Group : Defines group tone. You can select tone code for group, and it is used as a default value . 0~9 and a, b, c, d available. And “A” is used as a basic value.. 15. BEEP ON/OFF : BEEP sound ON/OFF. 16. KEY LOCK : LOCK/UNLOCK Button KEY. 17. SQUELCH : Squelch level is adjustable 18. AUTO SQUELCH : Squelch level is adjustable automatically by surroundings. 19. DTMF ON/OFF : DTMF function is available. 20. VOX : VOX LEVEL is adjustable by pushing up and down button. 21. AUTO VOX : VOX level is adjustable automatically by surroundings. 22. P - SCAN : Priority Scan 23. POWER SAVE : Power save mode is available. 24. PASS WORD : This function is useful for security reason. 25. LOCATION INDICATE : Indicate where the radio is located by blinking green light every 7 seconds. 26. SCRMABLE : Internal Voice Scrambler is available. 27. STUN / UNSTUN : For added security and to avoid abuse of the radio system in which you operate a feature known as Stun/Unstun is included in your radio. 28. BACKLIGHT : Lamp is lighting when you check LCD status. 4-2 LCD Display and Icons 1.ANT GAZE ; Shows the received signal strength. 2.TX POWER HIGH: Indicate power level 3.KEY LOCK: Appears during key lock function is ON. 4.ALART(BEEP) ON/OFF: Appears when beep sound is turned ON. 5.Battery level indicator: Indicates reaming battery power. 6.VOX ON/OFF: Appears when VOX function is turned On. 7.SCAN: Appears when Scan function is activated. 8.SCRAMBLE: Appears while the voice scrambler function is activated. 9.TALK AROUND Indicator. 4-3 Features 1. Channel This radio offers up to 255 channels 1). By using button, you can select the desired channel. 2. Missed calls list Up to 16 calls can be stored. If the same radio calls more than once, only the most recent call is stored. When fifteen calls have been stored by the radio, depending on the radio programming the sixteenth call received may overwrite the first or not be stored by the radio. 1). to enter Menu Mode. 2) Display shows 3) to select 4) orto scroll list 5) to exit 3. Contact list 1). to enter Menu Mode. 2) orto until 3) to select 4) orto scroll list 5) to exit 4. Status call list 4-1. Making STATUS call 1) to enter Menu Mode. 2) orto until 3) to select 4) orto scroll list 5) Push PTT KEY for sending message on the LCD. 4-2 Make STATUS Message 1) to enter Menu Mode. 2) orto until 3) to select 4) orto scroll list 5) to SELECT 5. Lone work 1). to enter Menu Mode. 2) orto until 3) to…

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'http://www.etech2004.co.kr #202-807, Techno Park Complex 192 Yakdae-Dong Wonmi-Gu, Bucheon, Korea Tel: 82 32 328 3184~5, Fax: 82 32 328 3186 Top Urgent For Review Please Reply Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 To Whom It May Concern, This letter is to comply with Section 0.457(d)(2)(i) and 0.459 pertaining to confidential material. We, E-TECH Co., Ltd., would like the following documents regarding this submission for FCC ID: R72IS100 to be kept confidential. 1. Schematics 2. Parts List The above material contains trade secrets or technical data, which would customarily be guarded from competitors. We do not want these documents to be accessible to the general public. Sincerely Yours, JongWoon Kim Director of E-tech E-TECH Co., Ltd.

The results shown in this test report refer only to the sample(s) tested unless otherwise stated. This test report cannot be reproduced, except in full, without prior written permission of the Company. Tel. +82 31 428 5700 / Fax. +82 31 427 2371 www.sgstesting.co.kr 7. Attachment B – Photos of the EUT l Front View of EUT l Rear View of EUT The results shown in this test report refer only to the sample(s) tested unless otherwise stated. This test report cannot be reproduced, except in full, without prior written permission of the Company. Tel. +82 31 428 5700 / Fax. +82 31 427 2371 www.sgstesting.co.kr l Left View of EUT l Right View of Product The results shown in this test report refer only to the sample(s) tested unless otherwise stated. This test report cannot be reproduced, except in full, without prior written permission of the Company. Tel. +82 31 428 5700 / Fax. +82 31 427 2371 www.sgstesting.co.kr l Top View of EUT l Bottom View of EUT

FCC ID LABEL 1. FCC ID label drawing 2. FCC ID label location E-TECH Co., Ltd. Model : IS100 FCC ID : R72IS100 Made in Korea

The results shown in this test report refer only to the sample(s) tested unless otherwise stated. This test report cannot be reproduced, except in full, without prior written permission of the Company. Tel. +82 31 428 5700 / Fax. +82 31 427 2371 www.sgstesting.co.kr l Top View of Logic board l View of Logic board The results shown in this test report refer only to the sample(s) tested unless otherwise stated. This test report cannot be reproduced, except in full, without prior written permission of the Company. Tel. +82 31 428 5700 / Fax. +82 31 427 2371 www.sgstesting.co.kr l Inner View of EUT l View of RF board The results shown in this test report refer only to the sample(s) tested unless otherwise stated. This test report cannot be reproduced, except in full, without prior written permission of the Company. Tel. +82 31 428 5700 / Fax. +82 31 427 2371 www.sgstesting.co.kr l Bottom View of RF board

5) to select 26. Scramble 1). to enter Menu Mode. 2) orto until 3) to select 4) orto select ON /OFF. 5) to select 27. Status call Send 1). to enter Menu Mode. 2) orto until 3) to select 4) orto select ON /OFF. 5) to select 5. Circuit Description. 5-1 Transmitter 1) MIC AMP Circuit Voice signal from the microphone are applied to microphone amplifier U303. U303 contains a low-pass filter that has a 6dB/oct response between 300Hz and 3kHz and eliminate above 3kHz. The pre-emphasized audio signal is applied to VR302 to adjust maximum frequency deviation. 2) VCO circuit The transmit frequency is directly generated by the Colpitts oscillation circuit contains Q402,Q403. 3) POWER AMP Signals from Q202, Q206 is supplied through antenna switch Q203,Q204 to a low-pass filter made up and then applied to Antenna Jack. 5-2 Receiver 1) LOWPASS FILTER and Antenna switching circuit. Signals from antenna connector fed to the antenna switching circuit through the low pass filter consisting of L212~214. In receiving mode, D204, D202 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 L211. 2) RF AMP Circuit The signals from the switching circuit are fed to the RF amplifier Q101 through a band pass filter made up of molded coil, vvc diode and capacitor. 3) MIXER Circuit The amplified signals are fed to Gate 1 of the first mixer Q102. First local oscillator signal is supplied to Gate 2 of Q102 from the PLL circuit to convert the RF signals into 21.4MHz first IF signal. 4) IF Circuit The first 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 local oscillator, second mixer, limiter amplifier, quadrature detector and active filter circuit. The second local oscillator at 20.945MHz with X 101 and is fed to the second mixer with the first IF signals to convert into 455kHz second IF signals. 5) Audio and squelch Circuit The detected audio signals are put through a 6dB/oct de-emphasis circuit made up of Q602. The signal is then applied to audio power amplifier U603 to obtain enough power to driver the speaker. Part of the recovered noise signal is fed to the integrated operational amplifier inside U101 which makes up an low pass filter. The sensitivity of squelch is adjusted by VR 101. 5-3 VCO Circuit The transmit / receive frequency is directly generated by the Colpitts oscillation circuit contains Q402,

The results shown in this test report refer only to the sample(s) tested unless otherwise stated. This test report cannot be reproduced, except in full, without prior written permission of the Company. Tel. +82 31 428 5700 / Fax. +82 31 427 2371 www.sgstesting.co.kr TEST REPORT FCC RULES Part 90, Part 2 Class II Permissive Change Report File No. : STROR-05-052 Date of Issue : Dec. 15, 2005 Kind of Product : FM Handheld Transceiver Model Name : IS100 Manufacturer : E-TECH Co., Ltd. Serial No. : - Test Result : Complied Note: This report shall not be reproduced except in full, without the written approval of SGS Testing Korea Co., Ltd. This document may be altered or revised by SGS Testing Korea Co., Ltd. Personnel only, and shall be noted in the revision section of the document The results shown in this test report refer only to the sample(s) tested unless otherwise stated. This test report cannot be reproduced, except in full, without prior written permission of the Company. Tel. +82 31 428 5700 / Fax. +82 31 427 2371 www.sgstesting.co.kr VERIFICATION OF COMPLIANCE Applicant : E-TECH Co., Ltd. FM Handheld Transceiver lris IS100 STROR-05-052 Nov. 28, 2005 ~ Dec. 15, 2005 APPLICABLE STANDARDS The results shown in this test report refer only to the sample(s) tested unless otherwise stated. This test report cannot be reproduced, except in full, without prior written permission of the Company. Tel. +82 31 428 5700 / Fax. +82 31 427 2371 www.sgstesting.co.kr The results shown in this test report refer only to the sample(s) tested unless otherwise stated. This test report cannot be reproduced, except in full, without prior written permission of the Company. Tel. +82 31 428 5700 / Fax. +82 31 427 2371 www.sgstesting.co.kr 1. General Description of EUT 2. General Information of EUT – 3. Modifications to made The results shown in this test report refer only to the sample(s) tested unless otherwise stated. This test report cannot be reproduced, except in full, without prior written permission of the Company. Tel. +82 31 428 5700 / Fax. +82 31 427 2371 www.sgstesting.co.kr 4. Test Procedure 4.1 Radiated Spurious Emissions FCC 2.1053, FCC 90.210 The results shown in this test report refer only to the sample(s) tested unless otherwise stated. This test report cannot be reproduced, except in full, without prior written permission of the Company. Tel. +82 31 428 5700 / Fax. +82 31 427 2371 www.sgstesting.co.kr 5. Radiated Spurious Emissions FCC 2.1053(a), FCC 90.210 Test Equipment Used Spectrum analyzer H/P 8593E Sep. 2006 Signal Generator Agilent 8648D May 2006 Dipole Antenna Schwarzbeck Mess VHAP May 2006 Amplifier Sonoma Instrument 305 Jun.2006 Dummy Load BIRD 8404 Dec. 2006 Horn Antenna Schwarzbeck 9120D Sep. 2006 Horn Antenna Electro-Metrics RGA-60 Apr. 2006 Biconical Antenna Schwarzbeck VHA9103 Mar. 2006 Log-periodic Antenna Schwarzbeck UHALP9107 May 2006 Anechoic Chamber Seo Young EMC - - The results shown in this test report refer only to the sample(s) tested unless otherwise stated. This test report cannot be reproduced, except in full, without prior written permission of the Company. Tel. +82 31 428 5700 / Fax. +82 31 427 2371 www.sgstesting.co.kr Test Equipment Used Spectrum analyzer H/P 8593E Sep. 2006 Signal Generator Agilent 8648D May 2006 Dipole Antenna Schwarzbeck Mess VHAP May 2006 Amplifier Sonoma Instrument 305 Jun.2006 Dummy Load BIRD 8404 Dec. 2006 Horn Antenna Schwarzbeck 9120D Sep. 2006 Horn Antenna Electro-Metrics RGA-60 Apr. 2006 Biconical Antenna Schwarzbeck VHA9103 Mar. 2006 Log-periodic Antenna Schwarzbeck UHALP9107 May 2006 Anechoic Chamber Seo Young EMC - - The results shown in this test report refer only to the sample(s) tested unless otherwise stated. This test report cannot be reproduced, except in full, without prior written permission of the Company. Tel. +82 31 428 5700 / Fax. +82 31 427 2371 www.sgstesting.co.kr Test Equipment Used Spectrum analyzer H/P 8593E Sep. 2006 Signal Generator Agilent 8648D May 2006 Dipole Antenna Schwarzbeck Mess VHAP May 2006 Amplifier Sonoma Instrument 305 Jun.2006 Dummy Load BIRD 8404 Dec. 2006 Horn Antenna Schwarzbeck 9120D Sep. 2006 Horn Antenna Electro-Metrics RGA-60 Apr. 2006 Biconical Antenna Schwarzbeck VHA9103 Mar. 2006 Log-periodic Antenna Schwarzbeck UHALP9107 May 2006 Anechoic Chamber Seo Young EMC - - The results shown in this test report refer only to the sample(s) tested unless otherwise stated. This test report cannot be reproduced, except in full, without prior written permission of the Company. Tel. +82 31 428 5700 / Fax. +82 31 427 2371 www.sgstesting.co.kr Test Equipment Used Spectrum analyzer H/P 8593E Sep. 2006 Signal Generator Agilent 8648D May 2006 Dipole Antenna Schwarzbeck Mess VHAP May 2006 Amplifier Sonoma Instrument 305 Jun.2006 Dummy Load BIRD 8404 Dec. 2006 Horn Antenna Schwarzbeck 9120D Sep. 2006 Horn Antenna Electro-Metrics RGA-60 Apr. 2006 Biconical Antenna Schwarzbeck VHA9103 Mar. 2006 Log-periodic Antenna Schwarzbeck UHALP9107 May 2006 Anechoic Chamber Seo Young EMC - - The results shown in this test report refer only to the sample(s) tested unless otherwise stated. This test report cannot be reproduced, except in full, without prior written permission of the Company. Tel. +82 31 428 5700 / Fax. +82 31 427 2371 www.sgstesting.co.kr Test Equipment Used Spectrum analyzer H/P 8593E Sep. 2006 Signal Generator Agilent 8648D May 2006 Dipole Antenna Schwarzbeck Mess VHAP May 2006 Amplifier Sonoma Instrument 305 Jun.2006 Dummy Load BIRD 8404 Dec. 2006 Horn Antenna Schwarzbeck 9120D Sep. 2006 Horn Antenna Electro-Metrics RGA-60 Apr. 2006 Biconical Antenna Schwarzbeck VHA9103 Mar. 2006 Log-periodic Antenna Schwarzbeck UHALP9107 May 2006 Anechoic Chamber Seo Young EMC - - The results shown in this test report refer only to the sample(s) tested unless otherwise stated. This test report cannot be reproduced, except in full, without prior written permission of the Company. Tel. +82 31 428 5700 / Fax. +82 31 427 2371 w…

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The results shown in this test report refer only to the sample(s) tested unless otherwise stated. This test report cannot be reproduced, except in full, without prior written permission of the Company. Tel. +82 31 428 5700 / Fax. +82 31 427 2371 www.sgstesting.co.kr 6. Attachment A – Photos of the test setup