R74TC-980U2TWO-WAY RADIO

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 except any interference received, including interference that may cause undesired operation. SAFETY TRAINING 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, Warning 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 Potential y Hazardous Electromagnetic Fields— RF and Microwave. To ensure that your exposure to RF electromagnetic energy is within the FCC allowable limits for occupational use, always adhere to the following CAUTION guidelines: • DO NOT operate the radio without a proper antenna attached, as this may damage 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 an antenna specifically authorized by the manufacturer for use with this radio. • DO NOT transmit 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 use HYT authorized accessories (antennas, batteries, belt clips, speaker/mics, etc). Use of unauthorized accessories can cause the FCC RF exposure compliance requirements to be exceeded. Body-worn operations are restricted to belt-clips, holsters or similar accessories that have no metallic component in the assembly and that provide at least 1.5 cm separation between the device, including its antenna, and the user's body. To provide the recipients of your transmission the best sound quality, hold the antenna at least 5 cm (2 inches) from mouth, and slightly off to one side. 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 within 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. FOREWORD Thank you for purchasing the HYT transceiver. READ ALL INSTRUCTIONS carefully and completely before using the transceiver. SAVE THIS INSTRUCTION MANUAL–This instruction manual contains important operating instructions for the transceiver. INSTALLATION NOTES • Body-worn operations are restricted to belt-clips, holsters or similar accessories that have no metallic component in the assembly and that provide at least 1.5 cm separation between the device, including its antenna, and the user's body • If you wear a portable two-way radio on your body, ensure that the antenna is at least 2.5 centimeters (1 in.) from your body when transmitting. IMPORTANT RF CAUTION! 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 2 to 4 in. (5 to 10 cm) away from the lips and the transceiver is vertical. RF CAUTION! NEVER operate the transceiver with a headset or other audio accessories at high volume levels. RF CAUTION! NEVER short the terminals of the battery pack. 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 +14°F (–10°C) or above +122°F (+50°C). The basic operations, transmission and reception of the transceiver, are guaranteed within the specified operating temperature range (depending on version). However, the LCD display may not be operate correctly, or show an indication in the case of long hours of operation, or after being placed in extremely cold areas. DO NOT modify the transceiver for any reason. KEEP the transceiver from the heavy rain, and never immerse it in the water. The transceiver construction is water resistant, not waterproof. The use of non HYT battery packs/chargers may impair transceiver performance and invalidate the warranty. TC-980 Owner’s Manual 1 Contents Thank You！...............................................................................................................................................2 Safety and General Information..................................................................................................................3 Specifications..............................................................................................................................................4 Product Inspection.........................................................................................…

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55 44 33 22 11 D D C C B B A A TV2 SW BUFFAMP Q1102SC5108Y VCXO X10116.8MHz DTMFDECODER CTC/TV2FILTER AGC A6A15 LCM_CD EN3 AUX3 U612 AUX7 PSW U609TK11250CM DC Q609DTC144EE 1STMIXER APC_SW R5V DC D115,D116MA2S077 D113,D114MA2S077 U601M16C30625 OPT-SEL CNVSS A11 D4 RESETIC DC VCC33 C3 RX_OUT C5 RX_OUT SW SBC SW B+ Q610DTC144EE ANT L411,L412,L413 DRIVEAMP DC AMP IF DCDC SW AMP BPF BUFFAMP RX_OUT Q2032SK1824 BEEP MIC R=0 CTC_OUT MIC_MUTE AUDIOPOWER AMP A18 X60232.768KHz X6019.8304MHz PTT AUX5 Q6022SA1745 AVR DC SW LPF Q1112SC5108Y SW U225NJM2902 A/D LIMITE MIC_IN SWB+ A1 D7 E2ROM LEC_EN LCM_RST AUX2 AUX6 - SW DC_SW SW SQL BUFFERAMP SW T/R B601SPEAKER A5A12 5M KEYBOARD SW EN2 RX_IN TXD1 5M D606DAN222 U606XC6201P502R SW DC D710DUALLED LEDR TC 980 SCHEMATIC BLOCK DIAGRAM ANT SW R5V RF RX_IN TONEFILTER TX_OUT B602MICPHONE Q613DTC114YE U611UPA672T A7 D0 Q6012SC5108Y AVR C2 5M SMARTRUNK TX_IN SW SWB+ MOTO_CON SW R5V APC/TV SW SW LOOPFILTER ACK TV2 D5 U603AT24C256N B+ LCM_CSO C6 CHANNEL GND AUX1 Q704DTC114EE FINALAMP T5V R5V BUFFERAMP RF T/R LPF Q101DTC144EE UL MICSW SW PA_MUTE A0 D3 J701LCD TX_IN 5CNS BEEP + Q6062SK1824 - LNA BPF XFMR IFRPOCESSOR DC T5V RSSI Q1062SC5108Y U101ADF4111 R=0 TX_IN Q6142SJ243 FLASHU602AT29C040 A4A10 CS0 SHIFTSW DC EN1 VOLSW J605 TX_OUT R5V DC T5C C5V LEDG LPF XFMR AMP DC T5V T5V GF(N)GF(W) SW DC VCO Q1092SC5108Y SW STB 5CNS A13A16 U604R5VC387A SW602 B+ SW SW + AMP DRIVEAMP RFAMP APCCIRCUIT SW T/R Q102,Q1082SK508NV LPF_CHANGE CTCFILTER CTC_IN SD AF_MUTE TONE_IN U610TDA8547TS MUTE PTT D2 C5 RX_IN BATT7.4V SW Q6052SK1824 R5C Q705DTC114EE DC RF SW L121,L122 Q1042SC4617 AUDIOPROCESSOR MUTESW TONEFILTER EXT-SP+EXT-MIC D1 LCM_SDI SWB+ DC SW A3 RD CLOCKMANAGER C1 VOL C5V U607XC6201P502R Q6072SA1745 NETWORKS SW W/N T/R PLL CLK D202,D203RB706F A9A14 EN4 AUX7 Q6032SA1745 AVR AVR SW Q6082SJ243 T5V IF SW RF L123,L124 TCXCO CTC_IN U205AK2346 PA OPTIONSW A8 A17 SW DTMF_ACK C4 AUX4 RECORDER AUX5 PTT B+ SAVE SWB+ IF R5V Q1052SC5108Y BPF RIPPLEFILTER C5V AMP R=0 BUFFERAMP U203TC75W51FU AUDIO_AMP GPS-RESET D6 CHARGE U605R3111N421A SW601 VCC33 RXD1 U608TK11250CM 5CNS SW D406 R5V MCF MATCHING T/RSW APC B+ SW RF Q112,Q113DTC144EE DATA EST U202M62364FP U201TC75W51FU D201RB706F A2 WR AUX6 AVR CHARGE Q604DTC144EE SBC DC SW Q409RQA0002 Q404RQA0005 Q4022SC4988 Q4012SC5108Y D401,D402MA2S077 HVC350B BPF BPF TV2 APC/TV1 D410,D411 HVC350B D409 HVC350B AT41511 Q410 D413,D414 T401 U402HSMS2827 Q4112SC3356 Z40149.95MHz Q4122SC5108Y U403TA31136 X40149.5MHz Q405DTC114EE Q407DTC114EE Q4082SK1824 Q406DTC114EE U401NJM2904 Q4182SC5108Y R5V L426,L427 T402 Q415DTA114EE Q416DTA114EE D415DAN222 D416DAN222 Z404450±6.0K Z403450±4.5K Q417DTC144EE Q414DTA114EE Q413DTA114EE Z402450K 1/2VDD U208TC75W51FU X2024.194304M U209BU8872 U206TC75W51FU X2013.6864M U210TC75W51FU U204TC75W51FU BUFFERAMP U211TC75W51FU APC/TV1 AF/APC/TV1AMP AUDIO_AMP MIC MOD EXT-SP-RXD0TXD0RSSI C6 M601MOTOR SERVO F601FUSE BUFFERAMP Q2042SC4617 TONE_OUT Port1 Port2 Port4 Port5 Port8Port7 Port6 5V Port3 TV2 1.0 11 Tuesday, August 29, 2006 Diagram HYT-RD-SCD-CD- TC-900 Model Name: Prepare: File No.: Rev: Date:Page: of Part Name: HYT Science&technology Co.Ltd. Check: Approve: Confidential

F.C.C. Justification Letter for Extended Frequency Use Shenzhen HYT Science & Technology Co., Ltd. advises that the Type TC-980U2 Portable Handheld Transceiver has the design capability to operate in the frequency band 450 to 420 MHz. Shenzhen HYT Science & Technology Co., Ltd. also acknowledges that it is a violation of FCC rules, for this equipment to operate on Unauthorised Frequencies inside the United States of America. The table below has been collated using information from “FCC Online Table of Frequency Allocations 47 CFR Part 2.106” and lists the Frequency Ranges and Rule Parts, which permit the operation of this equipment inside the United States of America. Please note that Licensed End Users do not have access to any external controls that will allow them to programme the equipment. Equipment programming is the responsibility of Shenzhen HYT Science & Technology Co., Ltd. approved Service Agents. Table of Frequency Range and Parts- (Refer 47 CFR Part.2.106) Freq.Range (MHz) Part 90 Part 97 Part 74 Part 22 Part 80 456 - 460 NF NF NF 460 - 462.5375 NF 462.5375 - 467.5375 NF 467.7375 - 470 NF 470 - 512 NF NF NF 512- 520 NF Note: NF: Non Federal Agency F: Federal Agency Sincerely yours Shenzhen HYT Science & Technology Co., Ltd. Xiong Lei / Sales Manager

FCC Label Location Justification Letter We hereby declare that Shenzhen HYT Science & Technology Co., Ltd. Two-way Radio of TC-980U2 which intended to bear the FCC ID: R74TC-980U2 & IC: 5465A-TC980U2 shall be marketed as following: 1) The device is handheld. 2) The FCC identifier is visible at the time of purchase. Marketing the device without the battery installed when the label is in the battery compartment is acceptable. The FCC identifier on the box or additional documentation directing the user as to where to find the FCC label also satisfies this requirement. 3) The user accessible area must not require any special tools for access and the FCC label must not be placed on a removable part. (i.e. not on battery cover) 4) The FCC identifier, model no. or FCC logo must be on the label and must meet all general labeling requirements or policies that apply for Certification, Verification or DOC; e.g. for Certification, for handheld devices, the identifier must go on the label but the two part warning statement in Section 15.19(a)3 can go in the manual. Sincerely yours 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: R74-TC980U2 to be kept confidential. 1. Circuit Diagram 2. Block Diagram 3. Operational Description 4. Turn Up Procedure 5. 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 Shenzhen HYT Science & Technology Co., Ltd. Xiong Lei / Sales Manager

Top View of EUT Bottom View of EUT Left View of EUT Right View of EUT Front View of EUT Back View of EUT

FCC ID Label Location FCC RF Warning Label

FCC ID Label Description FCC RF Warning Label

Internal View-1 of EUT Internal View-2 of EUT Internal View-3 of EUT Internal View-4 of EUT

TC-980 Circuit Description 1 Circuit Description 1. Power Supply Power supply of the radio is derived from the battery, which supplies battery B+ after passing through fuse 3A and then feeds through power switch. The power supplies voltage for three AVRs. IC504 supplies 5V (M5V) voltage for the control circuit. And IC503 supplies 5V (C5V) voltage for the shared circuit. IC502 supplies voltage for the transmit/receive circuit. In transmit mode, T5C becomes low voltage and Q502 is turned on to supply 5V (T5v) voltage for the transmit circuit. In receive mode, R5C becomes low voltage and Q504 is turned on to supply 5V (R5V) voltage for the receive circuit. Fig. 1 Power Supply Block Diagram 2. PLL Frequency Synthesizer PLL circuit generates the first local oscillator signal for reception and RF signal for transmission. Fig.2 PLL Block Diagram Confidential TC-980 Circuit Description 1 1） PLL Circuit Step frequency of PLL can be 2.5 KHz, 5.0 KHz or 6.25 KHz. A 16.8MHz reference oscillator signal is divided at IC301 by a counter to generate a 2.5 KHz, 5.0 KHz or 6.25 KHz reference frequency. Output signal from VCO is buffer amplified by Q301 and divided at IC301 by a frequency divider. The divided signal is compared with 2.5 KHz, 5.0 KHz or 6.25 KHz reference signal in the phase comparator of IC301. The output signal from phase comparator is filtered through a low pass filter to generate a level D.C., and the level D.C. controls oscillator frequency by controlling VCO. 2） VCO The operating frequency is generated by Q302 in transmit mode and by Q307 in receive mode. Operating frequency generate a control voltage by phase comparator to control varactor diodes so that the oscillator frequency is consistent with the MCU preset frequency(D301、D302、D303 and D304 in transmit mode, and D307、D308、D309 and D310 in receive mode). T/R pin is set high level in receive mode, and low level in transmit mode. The output from Q302 and Q307 is amplified by Q304 and sent to buffer amplifier. 3） Unlock Detector An unlock condition appears if low level appears at MUXOUT pin of IC301. Transmission is forbidden if this condition is detected by microprocessor. 3. Receiver The receiver utilizes double conversion superheterodyne (UHF)/(VHF). Fig. 3 Receiver Section Configuration 1） Front-end RF Amplifier The signal from antenna is amplified at RF amplifier (Q207) after passing through a transmit/receive circuit and a band pass filter. Before passing the first mixer, the amplified signal is filtered through another band pass filter to remove unwanted signals. 2） First Mixer The signal from RF amplifier is mixed with the first local from PLL frequency synthesizer circuit at the fix mixer (IC202) to create a 49.95MHz first IF signal. The first IF signal is then fed through a crystal filter (XF203) to further remove unwanted signals. Confidential TC-980 Circuit Description 1 3） IF Amplifier The first IF signal is amplified by Q206 before passing through crystal filter and by Q204 after crystal filter and then enters IF processing chip IC204. The signal from IC204 is mixed with the second oscillator signal again in IC204 to create a 450 KHz second IF signal. The second IF signal then passes through a 450KHz ceramic filter (wideband: CF201，narrowband: CF202) to eliminate unwanted signals before it is amplified and detected in IC204. 4） Narrowband/Wideband Switch Circuit Pin WCON and NCON of IC500 outputs wideband (high level) and narrowband (low level) controlling signal respectively to turn on corresponding diode-connector, and to choose ceramic filter CF201 (wideband) or CF202 (narrowband) to filter useless spurious signal. 5） AF Amplifier The resulting AF signal from IC204 enters base band processing chip IC408. The processed AF signal is then amplified by an AF power amplifier (IC401) to drive the speaker. 4. Transmitter 1） AF and Signaling AF signal from the microphone is amplified and low-pass-filtered in IC402 before it enters base band processing chip IC408, which also enters CTC/CDC/DTMF/2-Tone/5-Tone etc signaling generated by CPU. The IC408 processed mixing signal enters VCO for direct FM modulation (see fig.5). 2） RF Power Amplifier The transmit signal from VCO buffer amplifier (Q111) is amplified by Q101 and Q102. The amplified signal is then amplified by the power amplifier Q103 and Q104 (including a two-stage FET amplifier) to create 4.0W (UHF)/5.0W (VHF) RF power (see Fig. 6). Fig. 4 APC System Confidential TC-980 Circuit Description 1 3） Antenna Switch and LPF Output signal from RF amplifier passes through a low-pass filter network and a transmit/receive switch circuit comprised of D102，D103 and D104 before it reaches the antenna terminal. D103 and D104 is turned on (conductive) in transmit mode and off (isolated) in receive mode. 4） APC The automatic power control (APC) circuit stabilizes the transmit output power by detecting the drain current of final stage amplifier FET. IC101 (2/2) compares the preset reference voltage with the voltage obtained from final current. APC voltage is proportional to the difference between auto detect voltage and reference voltage output from IC101 (1/2). The output voltage controls FET power. 5. Base Band and Signaling System The block diagram of signaling section is shown as figure 5. Fig. 5 AF and Signaling Circuit 1） CTC/CDC Transmit: CTC/CDC signaling produced by CTC_PLL pass a low pass filter and then enters VCXO. CTC/CDC signaling produced by CTC_OUT pass a low pass filter and then mixed with AF before enters VCO. Receive: Demodulated signal enters MCU after pass IC404、IC405. MCU then judges whether CTC/CDC matches the preset values or not. According the result, the out tone will be controlled by AFMUTE. 2） 2-Tone / 5-Tone and DTMF Transmit: The signal produced by MCU provides a TX and SP out tone, and is then applied to the base band processing IC. The signal in mixed with the audio signal and goes to the VCO。 Receive: Demodulated signal is filtered after passing base b…

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序号物料编码物料名称数量 位号位置 13001050000000 贴片电阻 0402 0Ω J 1/16W11 R107B2H R113B2H R409T2F R439B2E R442T3C R443T3C R444 B1F R452T3C R455T4C R472T4F R498T5E 23001060000000 贴片电阻 0603 0Ω J 1/10W2 L406T1F R412T2F 33001070000000 贴片电阻 0805 0Ω J 1/8W(2 R418T1E R431T1C 43001051000000 贴片电阻 0402 10Ω J 1/167 R103B1H R104B2H R108B2I R116T1G R120T3G R128T1G R470B5F 53001051010000 贴片电阻 0402 100Ω J 1/12 R126T2G R441B2F 63001051020010 贴片电阻 0402 1KΩ J 1/163 R102B1I R118T2G R471B4G 73001061020010 贴片电阻 0603 1KΩ J 1/101 R479B4G 83001051030000 贴片电阻 0402 10KΩ J 1/111 R105B2I R112B3I R114B2H R415T1F R435B2F R482T4F R492B5F R496T2E R638B4D R642B2F R687B4D 93001051040010 贴片电阻 0402 100KΩ J 1/8 R117T1G R440T3C R445T3C R446T3C R447T3C R456T5C R457T5C R491B5E 103001051050020 贴片电阻 0402 1MΩ J 1/164 R436B2F R641B3E R643B3F R688B3F 113001051220000 贴片电阻 0402 1.2KΩ J 1/1 R110B3H 123001051510000 贴片电阻 0402 150Ω J 1/11 R129T2H 133001051520000 贴片电阻 0402 1.5KΩ J 1/1 R406T3F 143001051530000 贴片电阻 0402 15KΩ J 1/11 R421T1F 153001051540020 贴片电阻 0402 150KΩ J 1/2 R101B1I R429B1F 163001051540000 贴片电阻 0402 150KΩ F 1/5 R425B1F R426B1F R427B1F R428B1F R430B1F 173001051810010 贴片电阻 0402 180Ω J 1/11 R115T2H 193001051840000 贴片电阻 0402 180KΩ J 1/1 R438B2F 203001052200000 贴片电阻 0402 22Ω J 1/161 R407T3F 213001052210000 贴片电阻 0402 220Ω J 1/11 R140B4H 223001052220000 贴片电阻 0402 2.2KΩ J 1/1 R434B2F 233001052230010 贴片电阻 0402 22KΩ J 1/17 R137B3H R139B3I R141B4H R474B4G R475B4G R476B4G R477B4G 243001052240000 贴片电阻 0402 220KΩ J 1/2 R127T2G R636B4D 253001052710010 贴片电阻 0402 270Ω J 1/15 R123T3G R432T2C R433T2C R459T5D R460T5D 263001052720000 贴片电阻 0402 2.7KΩ J 1/2 R106B3H R484B4F 263001052730000 贴片电阻 0402 27KΩ J 1/16W(Ro2 R481T4F R135B3H 273001053310010 贴片电阻 0402 330Ω J 1/15 R403T3F R136B4H R408T2F R449T4C R480T4F 283001053320000 贴片电阻 0402 3.3KΩ J 1/11 R121T3G R122T3G R125T3G R401T3F R417B2E R486B4F R487B4E R488B4F R489B4E R490B4E R494T3F 293001053330000 贴片电阻 0402 33KΩ F 1/12 R414T2F R497T2E 303001063330000 贴片电阻 0603 33KΩ D 1/11 R420T1E 313001053340000 贴片电阻 0402 330KΩ J 1/1 R468B5F 323099080398000 贴片电阻 1206 0.39Ω J 1/3 R422B3D R423B3D R424B3C 333001054320000 贴片电阻 0402 4.3KΩ J 1/1 R453T4C 343001054700000 贴片电阻 0402 47Ω J 1/162 R413T2F R493B5F 353001064700000 贴片电阻 0603 47Ω J 1/101 R419T1E 363001054720000 贴片电阻 0402 4.7KΩ J 1/9 R119T2G R134B4G R138B3I R473B4F R478B4F R633B4C R634B4C R640B3E R670B4E 373001054730000 贴片电阻 0402 47KΩ J 1/19 R130T3G R131T3H R437B2F R623B3E R630B4C R631B4C R632B4C R639B3E R644B3E 383003994730000 热敏电阻 0603 47KΩ J 1001 RT401 T2E 383001064740010 贴片电阻 0603 470KΩ J 1/10W(R1 R416B2E 393001055690000 贴片电阻 0402 5.6Ω F 1/11 R461T5D 403001055620000 贴片电阻 0402 5.6KΩ J 1/3 R124T3G R450T4C R451T4B 413001056810000 贴片电阻 0402 680Ω J 1/11 R404T3F 423001066810010 贴片电阻 0603 680Ω J 1/11 R405T3F 433001056840000 贴片电阻 0402 680KΩ J 1/2 R635B4D R637B4D 443001058210000 贴片电阻 0402 820Ω J 1/11 R111B2H 453001058230000 贴片电阻 0402 82KΩ J 1/12 R483B4F R485B4F 453005054730010 电阻排 0402 47K*4 J 1/16W*4 1 RN101 B4A 463101060100010 贴片电容 0603 1PF B 50V4 C443T2C C444T2B C445T1B C447T1B 473101051000020 贴片电容 0402 10PF J 50V4 C115B3I C116B3I C401T3F C515T4F 483101061000000 贴片电容 0603 10PF J 50V2 C121T1H C148T3H 493102992000040 可调电容 3.2*2.5*1.25mm2 TC101 T1H TC102 T3H 503101051010030 贴片电容 0402 100PF J 5059 C101B2I C102B2I C103B2I C108B3H C155T2G C173B2I C423B2D C427B1F C461T4B C463T4B C464T4C C465T4C C489B5F C848B4K C849B4J C850B4J C851B4K C852B1K C853B1J C854B1K C855B1J C856B1K C857B5K C858B5K C859B5K C860B5J C861B5J C862B5K C864B3K C865B4K C867B5J C868B3K C869B4K C870B2K C871B3K C872B5K C873B4K C874B4K C875B4J C876B4K C877B2K C878B2J C879B2K C880B2K C881B2J C882B3K C883B3K C884B2K C885B2J C886B2J C887B2K C888B3K C889B2J C890B2K C891B2J C892B2K C893B2K C894B4K C895 B4J 513101051020010 贴片电容 0402 1000PF K 526 C113B3I C114B3I C119T2H C150T2H C410T2F C416T1E C456T3C C468T4C C490B5G C511B4F C519 T3C C615B4D C616B4D C617B4B C618B4C C620B3B C623B3D C625B4B C626B3C C630B2F C631B3E C633B3F C634B3E C638B5A C639B5A C675B4F 523101061020000 贴片电容 0603 1000PF K 51 C674B3F 533101051030020 贴片电容 0402 0.01UF K 25 C421T2D C425T1F C475T5D C496B4E C500B4E 543101061030010 贴片电容 0603 0.01UF K 22 C145T3G C635B3E 553101051040060 贴片电容 0402 0.1UF K 1622 C106B2H C109B3I C132T3G C407T3F C411T2E C419T2D C462T4B C493B4G C494B4G C497B5E C502B5E C503B4F C505B4F C506B4F C507B4F C514B5E C529T2E C636B3F C637B3E C646 B4A C672B4B C677B3F 563101051050000 贴片电容 0402 1UF K 6.3V2 C412B2E C619B3B 573101061050060 贴片电容 0603 1UF K 10V5 C422B2D C177 T3H C629B3F C632B3F C673B3F 583101051210000 贴片电容 0402 120PF J 503 C125T1G C128T1G C499B5E 593101061210000 贴片电容 0603 120PF J 501 C437T2C 603101051590000 贴片电容 0402 1.5PF B 502 C167B4I C169B4H 613101061590010 贴片电容 0603 1.5PF B 501 C449T1B 623101051500020 贴片电容 0402 15PF J 50V3 C137T3G C151B3G C487T5F 633101051510000 贴片电容 0402 150PF(±5%)1 C140T1G 643101051800010 贴片电容 0402 18PF J 50V2 C452T3C C472T5C 653101051820000 贴片电容 0402 1800PF K 51 C513B4E 663101050200010 贴片电容 0402 2PF B 50V4 C160B3H C166B4I C479T4E C481T4E 673101060200010 贴片电容 0603 2PF B 50V2 C429T1D C527T2F 683101052200010 贴片电容 0402 22PF J 50V1 C492B5F 693101052210020 贴片电容 0402 220PF J 504 C516T4F C176 T3G C521T4E C528T3F 703101062210000 贴片电容 0603 220PF J 501 C414T1F 713101052230000 贴片电容 0402 0.022UF K1 C104B1I 723101062250000 贴片电容 0603 2.2UF K 101 C512B4E 733101052400010 贴片电容 0402 24PF J 50V1 C486T4E 743101052790000 贴片电容 0402 2.7PF C 501 C144T3G 753101062700010 贴片电容 0603 27PF J 50V2 C149T3H C415T1F 763101050300000 贴片电容 0402 3PF B 50V6 C157B3H C484 T4C C159B3H C168B4H C478T4E C522T5E 773101053000010 贴片电容 0402 30PF J 50V1 C491B5G 783101063300000 贴片电容 0603 33PF J 50V1 C120T1H 793101053330000 贴片电容 0402 0.033UF K1 C485B2F 803101063900000 贴片电容 0603 39PF J 50V1 C428T1D 813101063910000 贴片电容 0603 390PF K 501 C442T2C 823101050400010 贴片电容 0402 4PF B 50V1 C488B5F 833101060400010 贴片电容 0603 4PF B 50V3 C122T1G C448T1B C451T3C 843101054700010 贴片电容 0402 47PF J 50V13 C153B3G C154B3H C161B3H C162B3H C163B3I C164B4I C165B4H C170B4H C171B3H C172B3I C175B4H C510B4F …

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TC-980 Adjustment Description 1 Adjustment Description Adjust the radio by PC programming software or by manual adjustment. In manual adjustment mode, the adjustment method is shown as follows: (Refer to “Software Specification” for the manual adjustment mode) Required Test Instrument Radio Communication Test Set 1 set Scanner 1 set 3A/10V Power Supply 1 set Digital Voltmeter 1 set 3A Ammeter 1 set Adjustment 1. Adjustment in user mode Firstly ground the SELF point, turn on the power by holding down TK for 2 seconds, and then the radio enters reset mode with green LED flashing twice. Turn the channel selector knob to the selected channel and press PTT, the radio data is all reset (All clone modes will be automatically activated when reset is completed). Refer to All Reset Mode in Software Specification for more details: VCO Measurement Adjustment Item Condition Test Instrument TerminalPartsMethod Specification /Remarks 1. Setting Power supply voltage 1. CH: TX high 3.9V±0.1V 2.Transmit VCO lock voltage 2. TX Low Check >0.5V 1. CH: RX high 3.9V±0.1V 3.Receive VCO lock voltage 2. RX low Digital Voltmeter CV TC301 TC302 Check >0.5V 2. Manual Adjust Mode Description (1) Enter the manual adjust mode Turn the power on by holding down TK and SK2 key simultaneously for 2 seconds, the radio enters manual adjust mode with red LED flashes twice. (TK: Top key; SK1: Side key1; SK2: Side key2) (2) Channel number on the channel selector knob Each channel number on the channel selector knob is defined a setting item. The bandwidth is 25 KHz and low frequency (F1) each time the channel selector knob is rotated. TC-980 Adjustment Description 1 (3) SK2 key Used to set the frequency. 1 point tuning is used to adjust center frequency, 3 point tuning adjusts F1, F3, F5 and 5 point tuning adjusts F1-F5. The frequency toggles from low frequency to high frequency. Green LED flashes once when F1 is selected. (4) TK key Use to toggle the channel bandwidth among 25 KHz, 20 KHz and 12.5 KHz. Red LED flashes once when the bandwidth is 25 KHz. (5) PTT/SK1 PTT→Increase SK1→Decrease PTT/SK1 is pressed to adjust upward/downward. Red LED glows indicating the maximum adjust value and green LED indicating the minimum value. Hold down the key to increase/decrease the adjust value continuously. Press PTT key to save the BATT LOW and SQL settings, then green LED glows once. (6) Select adjustment item group The first group of adjustment item is selected when the radio enters the manual adjust mode. Turn to CH16 and press PTT key to enter the next group. Press again to return to the first group. Orange LED flashes once when the first group is selected. Orange LED flashes twice when the second group is selected. (7) Frequency Setting (can be set via programming software) 5 point tuning（MHz） TX: { TX1,TX2,TX3,TX4,TX5} RX: { RX1,RX2,RX3,RX4,RX5} 3 point tuning（MHz） TX: { TX1, TX3, TX5} RX: { RX1, RX3, RX5} 1 point tuning（MHz） TX: { TX3} RX: { RX3} TC-980 Adjustment Description 1 3. Adjustment Method Turn the power on by holding down TK and SK2 key simultaneously for 2 seconds, the radio enters manual adjust mode with red LED flashes twice. Refer to Manual Adjust Mode in TC-700 Software Specification for more details. (1) Transmitter Item Condition Test InstrumentMethod Purpose Adjust a channel Enter the adjust mode; Turn to CH1; TX mode. Radio Communication Test Set; TX Test Adjust VR1 Frequency Error ≤100Hz 1. TX power Low Enter the adjust mode. Turn to CH1. Adjust at 5 point (wideband). PTT key (increase) SK1 key (decrease) Adjust power to: 1W±0.1W 2. CDCSS balance Enter the adjust mode. Turn to CH3. Adjust at 3 point (wideband), 1 point (medium band) and 1 point (narrowband) respectively. PTT key (increase) SK1 key (decrease) No adjustment 3. CDCSS deviation Enter the adjust mode. Turn to CH3. Adjust at 3 point (wideband), 1 point (medium band) and 1 point (narrowband) respectively. PTT key (increase) SK1 key (decrease) 4. CTCSS (67.0Hz) deviation Low Enter the adjust mode. Turn to CH4. Adjust at 3 point (wideband), 1 point (medium band) and 1 point (narrowband) respectively. PTT key (increase) SK1 key (decrease) Group 1 5. CTCSS (136.5Hz) deviation Center Enter the adjust mode. Turn to CH5. Adjust at 3 point (wideband), 1 point (medium band) and 1 point (narrowband) respectively. Radio Communication Test Set TX TEST HPF：20HZ LPF：300HZ PTT key (increase) SK1 key (decrease) Adjust deviation to 750Hz (wideband), 600Hz (medium band) and 400Hz (narrowband) respectively. TC-980 Adjustment Description 1 6. CTCSS (254.1Hz) deviation High Enter the adjust mode. Turn to CH6. Adjust at 3 point (wideband), 1 point (medium band) and 1 point (narrowband) respectively. PTT key (increase) SK1 key (decrease) 7. AK2346 Transmit Audio Deviation Enter the adjust mode. Turn to CH7. Adjust at 3 point (wideband), 1 point (medium band), 1 point (narrow band). Radio Communication Test Set HPF: 20Hz LPF: 15KHz 1KHz 120mV PTT key (increase) SK1 key (decrease) Adjust deviation to 4KHz (wideband), 3.2KHz (medium band) and 2KHz (narrowband) respectively. 8. 2 Tone deviation Enter the adjust mode. Turn to CH8. Adjust at 1 point (wideband), 1 point (medium band), 1 point (narrow band). PTT key (increase) SK1 key (decrease) Adjust deviation to 3.2KHz (wideband), 2.5KHz (medium band) and 1.8KHz (narrowband) respectively. 9. DTMF …

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