R74TR-800U2REPEATER BASE STATION

SAFETYTRAINING INFORMATION Your HYT radio generates RF electromagnetic energy during transmit mode. This radio is designed for and classified as “Occupational Use Only”, meaning it must be used only during the course of employment by individuals aware of the hazards, and the ways to minimize such hazards. This radio is NOT intended for use by the “General Population” in an uncontrolled environment. This radio has been tested and complies with the FCC RF exposure limits for “Occupational Use Only”. In addition, your HYT radio complies with the following Standards and Guidelines with regard to RF energy and electromagnetic energy levels and evaluation of such levels for exposure to humans: „ FCC OET Bulletin 65 Edition 97-01 Supplement C, Evaluating Compliance with FCC Guidelines for Human Exposure to Radio Frequency Electromagnetic Fields. „ American National Standards Institute (C95.1-1992), IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz. „ American National Standards Institute (C95.3-1992), IEEE Recommended Practice for the Measurement of Potentially Hazardous Electromagnetic Fields– RF and Microwave. „ The following accessories are authorized for use with this product. Use of accessories other than those (listed in the instruction) specified may result in RF exposure levels exceeding the FCC requirements for wireless RF exposure. To ensure that your expose to RF electromagnetic energy is within the FCC allowable limits for occupational use, always adhere to the following guidelines: „ DO NOT operate the radio without a proper antenna attached, as this may damaged the radio and may also cause you to exceed FCC RF exposure limits. A proper antenna is the antenna supplied with this radio by the manufacturer or antenna specifically authorized by the manufacturer for use with this radio. „ DO NOT transmits for more than 50% of total radio use time (“50%duty cycle”). Transmitting more than 50% of the time can cause FCC RF exposure compliance requirements to be exceeded. The radio is transmitting when the “TX indicator” lights red. You can cause the radio to transmit by pressing the “PTT” switch. „ ALWAYS keep the antenna at least 150 cm away from the body when transmitting The information listed above provides the user with the information needed to make him or her aware of RF exposure, and what to do to assure that this radio operates with the FCC RF exposure limits of this radio. Electromagnetic Interference/Compatibility During transmissions, your HYT radio generates RF energy that can possibly cause interference with other devices or systems. To avoid such interference, turn off the radio in areas where signs are posted to do so. DO NOT operate the transmitter in areas that are sensitive to electromagnetic radiation such as hospitals, aircraft, and blasting sites. Occupational/Controlled Use The radio transmitter is used in situations in which persons are exposed as consequence of their employment provided those persons are fully aware of the potential for exposure and can exercise control over their exposure. IMPORTANT READ ALL INSTRUCTIONS carefully and completely before using the transceiver SAVE THIS INSTRUCTION MANUAL- This instruction manual contains important operating instructions for the Two-Way Radio EXPLICIT DEFINITIONS WORD DEFINITION WARNING Personal injury, fire hazard or electric shock may occur. CAUTION Equipment damage may occur. NOTE If disregarded, inconvenience only. No risk of personal injury, fire or electric shock. OPERATING NOTES „ When transmitting, Please Keep the antenna at least 150 cm from your head and body. PRECAUTIONS WARNING! NEVER hold the transceiver so that the antenna is very close to, or touching exposed parts of the body, especially the face or eyes, while transmitting. The transceiver will perform best if the microphone is 150 cm away from the antenna. WARNING! NEVER operate the transceiver with a headset or other audio accessories at high volume levels. DO NOT push the PTT when not actually desiring to transmit. AVOID using or placing the transceiver in direct sunlight or in areas with temperatures below –30°C (–22°F) or above +60°C (+140°F). DO NOT modify the transceiver for any reason. FCC CAUTION: Changes or modifications to this device, not expressly approved by HYT, could void your authority to operate this transceiver under FCC regulations. „ Revision History P/N Release Date Revision Initial Release „ General Manual Scope This manual is intended for use by experienced technicians familiar with similar types of communication equipment. It contains all service information required for the equipment and is current as of the publication date. Safety and General Information The following general safety precautions as would normally apply, should be observed during all phases of operation, service and repair of this equipment. ◇ This equipment should be serviced by qualified technicians only. ◇ Do not modify the repeater for any reason. ◇ To avoid electromagnetic interference and/or compatibility conflicts, do not operate your repeater when you are near 380V AC mains or above. ◇ For vehicles with an air bag, do not place a repeater in the area over an air bag or in the air bag deployment area. Air bags inflate with great force. If a repeater is placed in the air bag deployment area and the air bag inflates, the repeater may be propelled with great force and cause serious injury to occupants of the vehicle. ◇ Turn off your repeater prior to entering any area with a potentially explosive atmosphere. ◇ To avoid possible interference with blasting operations, turn off your repeater when you are near electrical blasting caps, in a blasting area, or in areas posted: “Turn off two-way radio.” Obey all signs and instructions. ◇ Do not charge your back-up battery in a potentially explosive atmosphere ◇ Do not expose the repeater to direct sunlight over a long time, nor place it cl…

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TR-800 Service Manual -42- „ TR-800 Parts List 2 No. Material No. Material Name Qty. A 7207002200000 Nut M7.0*2.2mm 1 B 7203002400000 Nut M3.0*2.4mm 9 C 7103008001010 Machine screw M3.0*8.0mm 13 D 7102007020000 Self-tapping screw ST2.0*7.0mm 4 E 7103008020000 Self-tapping screw ST3.0*8.0mm 6 F 7103006001000 Machine screw M3.0*6.0mm 34 G 7103008001020 Machine screw M3.0*8.0mm 8 H 7104006000000 Machine screw M4.0*6.0mm 13 I 7204003001000 Nut M4.0*3.0mm 5 J 7104045000000 Machine screw M4.0*45.0mm 4 1 6000220000000 Front panel 1 2 6000221000000 Volume control Knob 1 3 6201066000000 Inner liner knob 0.20mm 1 4 6000232000010 LCD lens 1 5 6000222000000 SETUP button 1 6 5403000000040 HYT LOGO aluminum 1 7 7500068000000 LCD sponge 1 8 7400048010000 grill cloth 58*35mm 1 9 6100182000000 speaker 1 10 5001020000000 Speaker 16Ω 7W D ：35mm 1 11 6201176000000 speaker tabletting 1 12 1302008000000 control board 1 13 3307110600020 LED L-483IDT red 1 14 3307110600010 LED L-483GDT green 1 15 3307110600050 LED L-483EDT orange 1 16 3307110600030 LED L-483YDT yellow 1 17 4301080000040 Momentary contact switch 1 18 5110000000110 LCD Module TM-800 1 19 4210400000100 repeater cable 2 20 5202015200000 HDB15/F socket (DIP) 3 21 5204008000000 RJ45 socket 1 22 4302030000040 Channel selector 1 23 3307990000080 LED LT5CB4-81-XA400714 ultra bright blue 2 24 4210080000700 Connecting cable of speaker (with 2 Pin plug) 2-core 2 25 6100135000000 silica rubber key 1 26 6201197000000 SM07 Hook 1 27 6201166000000 top cover 1 28 4200200000000 jumper cable 2 TR-800 Service Manual -43- 29 Optional Duplexer 1 30 4220300000200 RF cable 1 31 6201171000000 duplexer bracket 1 32 4200400000200 power cable 1 33 4200250000200 power cable 1 34 6201170000000 bracket 0.8mmSECC 1 35 Optional main radio (Slave radio) 2 36 4408100002000 RF adaptor 1 37 4408100003000 RF adaptor 1 38 4220250000100 RF cable 2 39 6201168000000 rear plate 1 40 5401000000050 DC fan 12Vdc 0.9A 1 41 5205000000240 AC socket L46.80*W27.40mm 3pin 1 42 4099000000150 Cartridge fuse 1 43 4399010000000 Power switch 1 44 7104008000000 GND lug 1 45 4210400000200 T expansion signal cable 1 46 6201192000000 spring lock washer 5 47 6201169000000 housing 1 48 4210250000000 DC jumper cable #14 250mm red 1 49 4210250000100 DC jumper cable #14 250mm black 1 50 4210250000200 DC jumper cable #14 250mm yellow 1 51 4210250000300 DC jumper cable #14 250mm green 1 52 3003991040010 Surface temperature sensor 1 53 4200050000000 power cable of fan (2 pin with plug) 50mm 1 54 5202002100000 Socket 2pin 1 55 5204002000000 DC power socket 1 56 4002000000030 ATO Fuse 2 57 4002000000040 ATO Fuse clamper 2 58 5202002100100 Pin socket 3 59 4200250000000 DC power cable #14 250mm red 1 60 4200250000100 DC power cable #14 250mm black 1 61 1302008000010 Power supply board 1 62 4200400000010 Connection cable 1 63 6201167000000 Base tray 1 64 7500147000100 Foot 4 65 1603S24000010 Switch power 1 TR-800 Service Manual -44- „ Packing TR Service Manual 45 „ Specifications General Frequency range (Unit: MHz) VHF:136MHz~174MHz;U5:350MHz~400MHz U1: 400MHz~470MHz; U2: 450MHz~512MHz Channel capacity 512 Channel spacing 25KHz / 12.5KHz Power supply requirement 13.8 V DC±20% / 88-264V AC 50/60Hz Duty cycle 25W(100% Continuous) / 50W(VHF)45W(UHF)(50% Intermittent) Power consumption <1.8A Standby <2.5A Receive <13A @ 50/45W Transmit (13.8V dc) Operating temperature range -25°C ～ +60°C Dimensions 190mm（W）×310mm（H）×362mm（D） Weight 11kg Receiver Sensitivity <0.35uV@12dB SINAD Adjacent channel selectivity ≥70dB(Wide) ≥60dB(Narrow) Intermodulation response rejection ≥70dB Spurious response rejection ≥75dB Rated Audio Output Power 5W(Int.) 12W(Ext. @ 4Ω) Rated Audio Distortion ≤3%（3W） ≤10%（5W） Frequency stability ±2ppm@ -25°C ～ +60°C Transmitter Carrier output power (Conducted) 25W / 50W(VHF) 45W(UHF) Spurious emission ≤ -36dBm (below 1GHz) Max. Frequency deviation 5KHz(Wide) / 2.5KHz(Narrow) FM Hum and Noise ≥45dB(Wide) ≥40dB(Narrow) Audio harmonic distortion ≤3% @ 60% Dev. Frequency stability ±2ppm@ -25°C ～ +60°C All Specifications are subject to change without notice due to continuous development.

Jan.24, 2008 Timco Engineering, Inc. 849 NW State Road 45 P.O. Box 370 Newberry, Florida 32669 Subject: FCC ID: R74TR-800U2 Attestation statement that the end user can’t tune the transmitter. Gentlemen; The equipment meets the requirements of the FCC Rules, Part 90.203(e) and (g), as applicable. Programming of this product’s transmit frequencies can be performed ONLY by the manufacturer or by service or maintenance personal. The operator cannot be program transmit frequencies using the equipment’s external operation controls. Shenzhen HYT Science & Technology Co., Ltd. Xiong Lei / Sales Manager

Shenzhen HYT Science & Technology Co., Ltd. Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Gentlemen: This letter is to comply with Sections 0.457 and 0.459 pertaining to confidential material. Shenzhen HYT Science & Technology Co., Ltd. would like the following documents regarding this submission for FCC ID: R74TR-800U2 and IC: 5465A-TR800U2 to be kept confidential. 1. CONF APPENDIX Operation Theory .PDF 2. CONF APPENDIX PCB Layout .PDF 3. CONF APPENDIX Block Diagram .PDF 4. CONF APPENDIX Circuit Description .PDF 5. CONF APPENDIX Parts List .PDF 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 Shenzhen HYT Science & Technology Co., Ltd. Xiong Lei / Sales Manager

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„ Adjustment Description Logic Board Adjustment Test Apparatus 1. 20A/30V Power Supply 1set 2. Ammeter 1set 3. Digital Voltmeter 1set 4. Test Jumper Cables (mating with test ports of TR-800 and the communication test set) 5. Communication System Analyzer (such as HP8921 series) 1set Adjustment Radio Configuration Use HR-800E to program the TR-800. Table I and table II illustrate the factory default settings in a general operation mode. The “Ignition Sense Time” of main radio defines time delay from SETUP to KNOCKDOWN. Table Radio Programming Preset I Item Main Radio Slave Radio AUX3 I/O Ext. PTT Ext. PTT AUX4 I/O Rx Carrier(Tone) Rx Carrier(Tone) AUX5 I/O Rx Tone(Carrier) Rx Tone(Carrier) Horn Alert Logic NA 1s Ignition Sense 0h0m NA Drop Out Delay 3s Scan Gap Time 400ms Repeater Hang Time 2s Table Logic Board Switch Configuration II： Toggle Switch S01-1 S01-2 S01-3S01-4S01-5S01-6S01-7 S01-8 S01-9S01-10 Factory Default ON OFF OFF ON ON ON ON ON OFF ON Test Procedure a) Base Station Mode Make sure the TR-800 is in SETUP state and deactivate RPT & OPT functions. The TR-800 operates on base station mode with main radio to transmit and slave radio to receive (similar to a mobile radio). Correctly cable the test ports to communication system analyzer before adjustment. Measure Adjustment Item Condition Instrument Point PointMethod Specification/Remark Slave radio receive Channels with/without tones Communication test set J0109 K02 Rotate the knob to adjust the volume to rated power, check receiver’s squelch open/off sensitivity, with signaling squelch open sensitivity, audio distortion & Rx S/N Squelch open sensitivity: -118±3dBm Squelch off sensitivity: -118±3dBm CCTSS squelch sensitivity: -118±3dBm CDCSS squelch sensitivity: -118±3dBm Audio distortion: ≤3%@3W ≤10%@5W Rx S/N: ≥45dB (wide) ≥40dB (narrow) Main radio transmit Any channel without tones Communication test set Main radio Tx connector / Adjust the MIC audio output amplitude of Analyzer to 6-10mVinto J0109 3pin; check Tx frequency deviation matching 60% system Dev.; check modulation distortion and Tx S/N Tx frequency deviation: 3.0±0.2kHz (wide) 1.5±0.1kHz (narrow) Modulation distortion: ≤3% Tx S/N: ≥45dB (wide) ≥40dB (narrow) b) Uni-directional Repeater Mode (Forward) Make sure the TR-800 is in SETUP state and activate RPT function. The TR-800 operates on uni-directional repeater mode with slave radio keys main radio to repeat transmission (forward direction). Correctly cable the test ports to communication system analyzer before adjustment. Measure Adjustment Item Condition Instrument Point Point Method Specification/Remark MONI Any channel / / MONI Check up Long press monitor key, the slave radio processes monitoring, with green LED flashes Uni-direction al repeater (forward) Channels with/ without tones Communication test set Main radio Tx connector RV0101 Adjust the signal output amplitude of Analyzer to -47dBm, adjust RV0101 to obtain a 60% system deviation; check the modulation distortion and RX Duplex sensitivity: -116(+1/-3dBm) CTCSS sensitivity: -116(+1/-3dBm) CDCSS sensitivity: -116(+1/-3dBm) Repeater frequency deviation: 2.9±0.2kHz (wide) 1.4±0.1kHz (narrow) S/N; decrease the signal output amplitude of the analyzer, check the duplex sensitivity. Repeater audio distortion: ≤3%@3W ≤10%@5W Tx S/N: ≥42dB (wise) ≥37dB (narrow) Max. Power output (without duplexer): 45±2W(UHF) 50±2W(VHF) Rx audio output Any channel without tones Communication test set J0103 / Check the audio output amplitude of 5 pin on the accessory connector Audio output: ≥200mV Repeater Hang Time Any channel Communication test set / / In the repeater setup state, terminate the signal output of the analyzer, check the repeater hang time. Repeater hang time: 2S Linked audio relay Any channel without tones Communication test set Main radio Tx connector RV0103 Adjust the audio output amplitude of the analyzer MIC to 120mVinto 3 pin of J0103; adjust RV0103 to obtain a 60% system deviation, check modulation distortion and TX S/N Tx frequency deviation: 3.0±0.2kHz (wide) 1.5±0.1kHz (narrow) Modulation distortion: ≤3% Tx S/N: ≥45dB (wide) ≥40dB (narrow) Repeater Scan Any channel Signal generation or radio / / Set SCAN key active Use signal generator or portable transmitter to test whether repeater scanning works correctly and processes retransmission, and repeat testing on other channels. c) Uni-directional Repeater Mode (reverse) Make sure the TR-800 is in SETUP state and activate OPT function. The TR-800 operates on uni-directional repeater mode with slave radio keys main radio to repeat transmission (backward direction). Correctly cable the test ports to communication system analyzer before adjustment. Measure Adjustment Item Condition Instrument Point Point Method Specification/Remark MONI Any channel / / MONI Check up Long press the monitor key, the main radio processes monitoring, with red LED flashes. Slave radio transmit Any channel without tones Communication test set Slave radio Rx connector / Adjust the audio output amplitude of the analyzer MIC to 7mVinto 3 pin of J0109, check the TX frequency dev. Matching of 60% system Dev., check modulation distortion and TX S/N. duplex frequency deviation: 3.0±0.2kHz (wide) 1.5±0.1kHz (narrow) Modulation distortion: ≤3% Tx S/N: ≥ 45dB (wide) ≥40dB (narrow) Uni-directional repeater (reverse) Channels with/ without tones Communication test set Slave radio Rx connector RV0102 Adjust the signal output amplitude of Analyzer to -47dBm, adjust RV0102 to obtain a frequency dev. of 60%; check the modulation distortion and TX S/N; decrease the signal output amplitude, check the duplex sensitivity. Duplex sensitivity: -117(+1/-3dBm) CTCSS duplex sensitivity: -117(+1/-3dBm) CDCSS duplex sensitivity: -117(+1/-3dBm) Repeater frequency deviation: 2.9±0.2kHz (wide) 1.4±0.1kHz (narrow) Repeater audio distortion: ≤3%@3W ≤10%@5W Tx S/N: ≥42dB (wide) ≥37dB (narrow) Max. Power output (without duplexer): 45±2W(UHF) 50±2W(VHF) d) Radio Kil…

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FCC Part 90 & RSS-119 TEST REPORT For Repeater (Base Station) Model Name: TR-800U(2) Trade Name: HYT FCC ID: R74TR-800U2, IC: 5465A-TR800U2 Report No.: SZAGC003080103E6 Date of Issue:Jan.18, 2007 Prepared For Shenzhen HYT Science & Technology Co., Ltd. HYT Tower, Shenzhen Hi-Tech Industrial Park North, Beihuan Rd., Nanshan District, Shenzhen, P.R.C. Tel: 86-755-2697 2999 Fax: 86-755-8613 7130 Prepared By Shenzhen Attestation of Global Compliance Science & Technology Co., Ltd. Suite B11/B12, 4F, Huafeng Mall, Chuangye 2 nd Road, 25 District, Bao’an, Shenzhen Tel: 86-755-2974 2358 Fax: 86-755-2600 8484 Report No.: SZAGC003080103E6 Page 1 of 54 VERIFICATION OF COMPLIANCE Applicant: SHENZHEN HYT SCIENCE & TECHNOLOGY CO., LTD. HYT Tower, Shenzhen Hi-Tech Industrial Park North, Beihuan Rd., Nanshan District, Shenzhen, P.R.C. Manufacturer: SHENZHEN HYT SCIENCE & TECHNOLOGY CO., LTD. HYT Tower, Shenzhen Hi-Tech Industrial Park North, Beihuan Rd., Nanshan District, Shenzhen, P.R.C. Product Description: Repeater (Base Station) Brand Name: HYT Model Number: TR-800U(2) Serial Number: N/A File Number: SZAGC003080103E6 Date of Test: Jan.01 2008 ~ Jan.18, 2008 We hereby certify that: The above equipment was tested by Shenzhen Attestation of Global Compliance Science & Technology Co., Ltd. The data evaluation, test procedures, and equipment configurations shown in this report were made in accordance with the procedures given in ANSI C 63.4:2003 and TIA/EIA 603. The sample tested as described in this report is in compliance with the FCC Rules Part 90. The test results of this report relate only to the tested sample identified in this report. Prepared By: Tony Tian Jan.18, 2007 Checked By: Randy He Jan.18, 2007 Authorized By King Zhang Jan.18, 2007 Report No.: SZAGC003080103E6 Page 2 of 54 CONTENTS 1. GENERAL INFORMATION.................................................................................................................. 4 1.1 P RODUCT DESCRIPTION.................................................................................................................... 4 1.2 R ELATED SUBMITTAL(S) / GRANT (S)................................................................................................... 5 1.3 TEST METHODOLOGY........................................................................................................................ 5 1.4 TEST FACILITY.................................................................................................................................. 5 1.5 SPECIAL ACCESSORIES..................................................................................................................... 5 1.6 EQUIPMENT MODIFICATIONS.............................................................................................................. 5 2. SYSTEM TEST CONFIGURATION ..................................................................................................... 6 2.1 EUT CONFIGURATION........................................................................................................................ 6 2.2 EUT EXERCISE................................................................................................................................. 6 2.3 GENERAL TECHNICAL REQUIREMENTS................................................................................................ 6 2.4 CONFIGURATION OF TESTED SYSTEM................................................................................................ 6 3. SUMMARY OF TEST RESULTS ......................................................................................................... 7 4. DESCRIPTION OF TEST MODES....................................................................................................... 8 5. CONDUCTED LIMITS.......................................................................................................................... 9 5.1 PROVISIONS APPLICABLE ........................................................................................................... 9 5.2 MEASUREMENT PROCEDURE .................................................................................................... 9 5.3 TEST SETUP BLOCK DIAGRAM.................................................................................................. 10 5.4 TEST EQUIPMENT USED................................................................................................................... 10 5.5 TEST RESULT .............................................................................................................................. 11 6. FREQUENCY TOLERANCE.............................................................................................................. 12 6.1 PROVISIONS APPLICABLE................................................................................................................. 12 6.2 MEASUREMENT PROCEDURE........................................................................................................... 12 6.3 T EST SETUP BLOCK DIAGRAM.......................................................................................................... 13 6.4 TEST EQUIPMENT USED: .................................................................................................................. 13 6.5 T EST RESULT.................................................................................................................................. 13 7. EMISSION BANDWIDTH................................................................................................................... 18 7.1 PROVISIONS APPLICABLE................................................................................................................. 18 7.2 MEASUREMENT PROCEDURE........................................................................................................... 18 7.3 TEST SETUP BLOCK DIAGRAM......................................................................................................... 18 7.4…

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