tc-500 s m

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Content

General……………………………………………………………………………2

Brief Introduction………………………………………………………………..3

Software Description…………………………………………………………..5

Circuit Description……………………………………………………………..9

CPU Pins…………………………………………………………………………13

Part List 1………………………………………………………………………..15

Adjustment Description……………………………………………………….22

Disassembly and Assembly………………………………………………..25

Exploded View………………………………………………………………..28

Part List 2……………………………………………………………………….29

Packing…………………………………………………………………………..30

PC Board View………………………………………………………………….31

Block Diagram…………………………………………………………………..33

Schematic Diagram…………………………………………………………..34

Specifications…………………………………………………………………35

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TC-500 General

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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.

User Safety Information

The following precautions are recommended for personnel safety:

DO NOT transmit until all RF connectors are verified secure and any open connectors are

properly terminated.

SHUT OFF and do not operate this equipment near electrical blasting caps or in an explosive

atmosphere.

When in vehicles with an airbag, do not place a portable radio in the area over an airbag or in the

airbag deployment area.

Do not expose the radio to direct sunlight for a long time nor place it close to a heating source.

Do not use any portable radio with a damaged antenna. If a damaged antenna comes into contact

with your skin, a minor burn may result.

When transmitting with a portable radio, hold the radio in a vertical position with its microphone

about 5 centimeters away from your mouth.

If you wear a portable radio on your body, be sure to keep the antenna at least 2.5 centimeters

away from your head or body when transmitting. This equipment should be serviced by qualified technicians only.

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TC-500 Brief Introduction

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Brief Introduction

1

2 3 4

5

67

89

10

11

12

13

1. Antenna

2. LED indicator

The light will glow red during transmission. The light will glow green during receiving. During

transmission, the light flashes red when the battery voltage is low.

3. Channel selector knob

Turn the channel selector knob to select from channels 1-16 (Channel 16 can be programmed by

your dealer as scan function).

4. Power/Volume control knobRotate the Power/Volume Knob clockwise until a “click” is heard to turn the radio on, fully counter

clockwise until a “click” is heard to turn the radio off. When the radio is on, turn the knob to adjust

volume.

5. PTT key

Press and hold PTT key to talk, release to receive.

6. Monitor key

In receive mode, long press (above 2 seconds) Monitor key to monitor activity on the current

channel.

7. Microphone

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TC-500 Brief Introduction

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8. Speaker

9. External jack

Remove the jack cover and insert an earphone; or insert programming cable into the jack to

programme the radio via programming software.

10. Battery

11. Belt clip

Used to clip radio on your belt.

12. Battery latch

Used to fasten and remove the battery.

13. Charging connectors

Connect the charging connectors with that on the charger to begin charging.

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TC-500 Software Specification

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Software Specification

Radio Feature Description

1. Use channel selector knob to choose from 15+1(Scan) channels

2. Monitor

3. CTCSS/CDCSS

Non-standard Model (Other): 38+83 groups

4. Channel Spacing

12.5KHz/25KHz Narrow/wide Optional

5. Channel Scan (Priority channel and scan revert channel available)

6. Battery Save feature (Dealer programmable)

7. Time-out Timer (TOT)

8. High/low Power Switch

9. Squelch Level Control (9 levels)

10. Low Battery Alert

11. Model Set Mode

12. PC Programming and Adjusting Mode

13. User Wired Clone Mode

14. Factory Wired Clone Mode

15. Manual Adjust Mode

Radio Modes1. User Mode:

User mode is conventional communication mode. Turn the power on while disconnecting the two SELF points, the

radio enters user mode. (Refer to “TC-500 Owner’s Manual” for details about operation in this mode.)

2. Model Set Mode

(1) If the radio is standard model, short out the two MS2 points on PCB and then operate following the steps (3) (5) and

(6). If the radio is non-standard model, please disconnect the two MS2 points on PCB and then operate the

following steps.

(2) To select MS1 (See the initial data table) according to the radio model, if MS1 is 1, short out the two MS1 points on

PCB and continue the following operation. If not, disconnect the two MS1 points and continue.(3) Short out the two SELF points on PCB and then turn the power on. Two beeps sound.

(4) Turn channel selector knob to the corresponding position (1-11) according to the radio model (Refer to the initial

data table).

(5) Press PTT key while holding down MONI key to set the model. Channel data and settings are initialized (Refer to

the initial data table).

(6) Turn off the power and then disconnect the two SELF points on PCB to complete the model setting.

For example, MS1 of TC-500-U (450.000~469.995MHz) is 0 (See the initial data table). Its number is 7. It is

unnecessary to short out MS1 and MS2. To initialize its model and channel data, you can operate as following:

(1) Short out the two SELF points on PCB;

(2) Turn on the power and turn the channel selector knob to the position 7;

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(3) Press PTT key while holding down MONI key;

(4) After data reset, turn off the power, disconnect the two SELF points and restart the power to use the radio.

Remarks: The old data (frequency, CTCSS/CDCSS, channel function settings) will be changed once the model is set,

and part of functions will also be changed. Therefore, do not make this operation unless it’s very necessary, such as

changing the EEPROM, etc.

3. PC Programming Mode

The following parameters can be set through programming software:

（ 1 ） Receive frequency and transmit frequency

（ 2

） Receive signaling and transmit signaling

（ 3

） Busy channel lockout

（ 4

） Time-out timer

（ 5

） Squelch level

（ 6

） Battery save

（ 7

） Audio alarm

（ 8

） Monitor mode

（ 9

） Scan mode

（ 10

） Scan revert channel

（ 11

） Priority scan channel

（ 12

） N/W Model

（ 13

） High/low power

（ 14

） N/W setting

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4. PC Adjusting Mode

The following parameters can be set via PC programming software:

(1) Low battery alert level

(2) Squelch level 9

(3) Squelch level 3

(4) CTCSS deviation (wide)

(5) CDCSS deviation (wide)

(6) CTCSS deviation (narrow)

(7) CDCSS deviation (narrow)

5. Manual Adjust Mode

If manual adjust mode is enabled, turn on the power while holding down PTT and MONI simultaneously, the radio enters

manual adjust mode after 2 seconds. Choose the adjusting items by turning the channel selector knob to CH1-CH7

position; use PTT (upwards) or MONI (downwards) to adjust (Note: MIC jack shouldn’t be connected with external cable

while adjusting), CH1-CH7 positions are defined as follows:

(1) Low battery alert level

(2) Squelch level 9

(3) Squelch level 3

(4) CTCSS deviation (wide)

(5) CDCSS deviation (wide)

(6) CTCSS deviation (narrow)

(7) CDCSS deviation (narrow)

CH13-CH16 are used to adjust transmitter and receiver. Press PTT to transmit; release to receive. CH13-CH16 are

defined as follows:(13) Center frequency (difference between transmit and receive frequency is 0.1MHz)

(14) Lowest frequency (difference between transmit and receive frequency is 0.1MHz)

(15) Highest frequency (difference between transmit and receive frequency is -0.075MHz)

(16) Center frequency: transmit with 250.3Hz CTCSS tone (difference between transmit and receive frequency is

0.1MHz)

Note:

To enable or disable manual adjust mode: short out the two SELF points, turn on the power to enter model set mode. Andthen the manual adjust mode is enabled. Press [PTT], manual adjust mode is disabled. This mode is suggested to bedisabled after the adjustment is completed.

6. User/Factory Wired Clone Mode

Turn on the power while holding down MONI, the radio enters wired clone mode.

(1) If the two SELF points are disconnected, press MONI again to begin user wired clone and red LED blinks; When

cloning is completed, red LED goes out.

(2) If the two SELF points are short circuit, press MONI again to begin factory wired clone and red LED blinks; When

cloning is completed, red LED goes out.

Note: The difference between user wired clone mode and factory wired clone mode is that the latter is able to clone

tune parameters.

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TC-500 Circuit Description

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Circuit Description

1. Frequency Configuration

The receiver utilizes double conversion superheterodyne. The first IF is 21.4MHz and the secondis 455KHz. The first local oscillator signal is supplied from PLL circuit. Frequency needed in the

transmitter is supplied from PLL circuit. Figure 1 shows the frequency configuration.

Frequency Range: 400 MHz420MHz

450 MHz470MHz

136 MHz150MHz

150 MHz174MHz

Figure 1 frequency configuration

2. Receiver

The receiver utilizes double conversion superheterodyne.

1) Front-end RF Amplifier

The input signal from antenna is amplified in RF amplifier (Q27) after passing through

the receive/transmit switch circuit and a 3-stage LC band pass filter. The amplified

signals are filtered by a band pass filter (a 3-stage LC BPF) to eliminate unwanted

signals before they goes to the first frequency mixer.

Figure 2 receiver section configuration

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2) The First Mixer

The signal from RF amplifier is mixed with the first local oscillator signal from PLL frequency

synthesizer in the first mixer (Q23) to generate a 21.4MHz first IF signal. The first IF signal is then

fed through two monolithic crystal filters (XF1) to remove spurious signals from adjacent channels.

3) IF Amplifier

The first IF signal is amplified in Q22 and then enters the IF process chip IC1. The signal is mixed

with the second local oscillator signal in IC1 to create a 455KHz second IF signal. The second IF

signal is then fed to a 455KHz ceramics filter (CF1) to eliminate unwanted signals before it is

amplified and FM detected in IC1.

4) AF Amplifier

The demodulated AF signal obtained from IC1 is amplified in IC7 (1/4), and then filtered by low

pass filter Q19 and high pass filter Q20, and then de-emphasized by R130 and C156. The

resulting AF signal passes through a volume control circuit and then is amplified to a sufficient

level to drive the speaker by AF power amplifier (IC8).

5) Squelch

Part of the AF signal from IC1 enters IC1 again, and the noise component is amplified and

rectified by a filter and an amplifier to produce a DC voltage corresponding to the noise level. The

DC signal from IC1 goes to the analog port of the microprocessor (IC11). IC11 determines

whether to output sounds from the speaker by detecting whether the input voltage is higher or

lower than preset value.

To output sounds from the speaker, IC11 sends a high level signal to the MUTE and AFCO lines

and turns IC8 on through Q12.

DET

FM IF IC1

IF AMP

HPFAMP

IC7

AF LPF HPFDET

2 39 40 1

SW

Q12

SW

AF/PF AMP

IC7

LPF

IC11MCU

B U S Y

M U T E

A F C O

T I

IC8

SP

Figure 3. AF amplifier and squelch circuit

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6) Receive signaling

CTCSS/CDCSS

Audio frequencies over 300Hz of the output signal from IC1 is cut off by a low-pass filter. The

resulting signal enters the microprocessor IC11. IC11 determines whether the CTCSS/CDCSS

matches the preset value and controls the MUTE and AFCO and the speaker sound output

according to the squelch results.

3. PLL Frequency Synthesizer

PLL circuit generates the first local oscillator signal for reception and the RF signal for

transmission.

1) PLL Circuit

The step frequency of PLL circuit is 2.5KHz or 6.25 KHz. A12.8MHz reference

oscillator signal is divided at IC2 by a fixed counter to produce a 2.5 KHz or 6.25 KHz

reference frequency. Output signal from voltage control oscillator (VCO) passes

through buffer amplifier Q14 and is divided at IC2 by the dual-module programmable

counter. The divided signal is compared in the phase comparator IC2 with the 2.5 KHz

or 6.25 KHz reference signal. The output signal from phase comparator is filtered

through a low-pass filter and passed to the VCO to control the oscillator frequency.

(See figure 4)

Figure 4 PLL circuit

2) VCO

The operating frequency is generated by Q16 in transmit mode and by Q8 in receive

mode. The operation frequency generates a voltage through the phase comparator to

control the varactor diodes, so as to keep the oscillator frequency consistent with the

preset frequency in CPU (D2 and D3 in transmit mode and D7 and D8 in receive mode).

T/R pin is set high in receive mode causing Q6 to turn off Q16 and turn Q7 on. The T/R pin is set

low in transmit mode. The output from Q8 and Q16 is amplified by Q14 and sent to the buffer

amplifier.

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4. Transmitter

1) Transmit audio

The audio signal from microphone is amplified through IC3, and then pre-emphasized , and

then filtered by another low-pass filter （ separate filter ） (Q25 and Q24) to eliminate the

frequencies over 3KHz. The resulting signal enters the VCO for direct FM modulation. (See

figure 5)

2) CTCSS/CDCSS Encoder

The necessary frequency for CTCSS/CDCSS encoder is generated by IC11 and

FM-modulated to the PLL reference signal. Since the reference OSC does not modulate the

loop characteristic frequency or higher, modulation is performed at the VCO side by splitter.

(See figure 5)

Figure 5 transmit CTCSS3) RF amplifier

The transmit signal obtained from VCO buffer amplifier Q14 is amplified by Q15 and Q17.

This amplified signal is passed to power amplifier Q32 and Q31, and is capable of producing

a 4.0W RF power.

4) Antenna Switch and LPF

The RF amplifier output signal is passed through a low-pass filter network and a

transmit/receive switch circuit before it is passed to the antenna terminal. The

transmit/receive switch circuit is comprised of D11 and D12. D11 and D12 is turned on in

transmit mode and off in receive mode.

5. Power

The 5V reference power supply for the control circuit is derived from an internal battery. The

reference power provides a 5V supply in transmit mode [T_V], a 5V supply in receive mode [R_V],

and a 5V supply shared in both modes based the control signal from the microprocessor.

6. Control System

The IC11 CPU operates at 7.3728MHz.

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TC-500 CPU Pins

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CPU Pins PIN No. PIN NAME I/O DESCRIPTION

1 TI I CTCSS/CDCSS input

2 BUSY I Input busy signal

3 BATT I Detect battery voltage

4 TIBI I CTCSS/CDCSS exterior circuit central point input

5 NC

6 SAVE O Power saving control H: OFF L: ON

7 TXLow O Transmitter power control H: Low power L: High power

8 NC

9 DAT O data output

10 CLK O clock output

11 LE O PLL IC enable

12 BEEP O Beep output

13 SCL O E2PROM clock cable

14 SDA I/O E2PROM data cable

15 MUTE O MIC mute control H: Mic mute L: Mic enable

16 MS1 I Model set

17 GREEN O Green light control H: light

18 RED O Red light control H: light

19 TXD O RS-232C output

20 RXD I RS-233C input

21 PTTK I PTT key input

22 MS2 I Standard model select H: Non-standard L: Standard

23 RXC O Receiver power control L: power on

24 NC

25 RESET I Reset input

26 SELF I Self-program L: on

27 TXC O Transmitter power control H:on

28 XIN I Oscillator input

29 XOUT O Oscillator output

30 Vss I Grounding

31 R/T O TX/RX control H：

RX L：

TX

32 UL I PLL unlock detector H: Lock L: unlock

33 IF-SELECT I IF select H: 21.4MHz L: 45.05MHz

34 MONIK I MONI key input

35 ENC0 I Channel selector knob encode input

36 ENC1 I

37 ENC2 I

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TC-500 CPU Pins

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38 ENC3 I

39 AFMUTE O Audio muting control

40 AFP O Audio power control

41 TONE5 O CTCSS code output






47 WNTC O W/N L: Wide H: Narrow

47-70 NC

71 Vcc I Power input: 5V

72 VREF I A-D converse reference voltage

73 Avss I A-D GND

74-77 NC

78 NC

79 NC

80 NC

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TC-500 Adjustment Description

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Adjustment Description

The radio can be adjusted with PC programming software or by manual adjustment. Manual adjustment

procedure of TC-500 is as follow. (Refer to “model set mode” and “manual adjust mode” in the section

Software Specification .)

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. Initializing:

It’s necessary to set the model and initialize the radio before alignment because there is no needed

information in EEPROM when the radio is manufactured. Please refer to the “model set mode” in

the section Software Specification for details.

2. Adjustment:

Some items can be adjusted in conventional communication mode and the others in manual adjust

mode. Turn on the power, the radio enters conventional communication mode. If manual adjust

mode is enabled, turn on the power while holding down PTT and MONI simultaneously, the radio

enters manual adjust mode after 2 seconds. (Refer to the section Software Specification .)

VCO

Item ConditionMeasurement Adjustment Specification

/RemarksTest Instrument Terminal Part Method

1.Power supply 1.power voltage DC 6V

2.Transmit VCO

lock voltage

1.TX High. Turn to CH15 in

manual adjust mode and press

PTT.

Digital Voltmeter CV

TC13.0V±0.2V

2.TX Low. Turn to CH14 in


PTT. >0.8V

3. Receive

VCO lock

voltage

1.RX High. Turn to CH15 in

manual adjust mode.TC2

2.6V±0.2V

2.RX Low. Turn to CH14 in

manual adjust mode. >0.8V

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RECEIVER: (Enter the manual adjust mode)

Item Condition

Measurement Adjustment

Specification/Remarks

Test

Instrument Terminal Part Method

4. Band Pass

Filter

1.RX Center. Turn to

CH13 in manual adjust

mode.

Scanner ANT . TP2

TC3

TC4

TC5

Adjust the waveform to the

top, and the top is flat, the

bandwidth is about 20MHz,

the sign of RX central

frequency is at the middle

of the waveform.

5.sensitivity



mode (long press MONI

key to switch N/W).

Radio

Communicati

on Test Set

-118dBm

MOD:1KHz

DEV:±3kHz

(Wide)

±1.5kHz(Narrow)

FILER:

0.3-3.4kHz

ANT

Speaker

Jack

CheckSINAD: 12dB or

higher

2. RX Low. Turn to



key to switch N/W).

3.RX High. Turn to



key to switch N/W).

6.Squelch



mode. Adjust by

pressing PTT or MONI.

Radio

Communic-

ation Test

Set

SSG output:

-117dBmANT

Speaker

Jack

Level 9

Adjust to just close the

squelch.

Adjust squelch

level 9



mode. Adjust by


Radio

Communic-

ation Test

Set

SSG output:

-125dBm

Level 3

Adjust to just close the

squelch.

Adjust squelch

level 3

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Transmitter

Item Condition

Measurement Adjustment Specification

/Remarks

Test

equipment Terminal Parts Method

7.Transmit

frequency

1. TX Center. Turn to CH13 in


PTT.

Radio Communication

Test SetANT TC6

Adjust it to center

frequency

Error

≤ ±250Hz

8.Max.

Deviation



PTT (long press MONI key to

switch N/W).

Radio Communication

Test Set

LPF: 15kHz

AF:1kHz 120mV

ANT

MIC JackVR2

Adjust deviation to:

4.0kHz±200Hz (Wide)

Check

2.0kHz±200Hz

(narrow)

9. Modulation

Sensitivity




switch N/W).

Radio Communication

Test Set

FILTER:

FILER:

0.3-3.4kHz

AF:1kHz 12±

2mV

ANT

MIC Jack

Check deviation:

3.0kHz(Wide)

1.5 kHz(narrow)

10. CTCSS

Balance

1. TX Center. CTCSS: 67.0Hz.

Turn to CH4 in manual adjust

mode.Radio Communication

Test Set

LPF:300Hz

ANT VR3

Adjust VR3, deviation

tested on condition 1 and

condition 2 are

consistent, the difference

≤ 200Hz

67.0Hz

CTCSS

2. TX Center. CTCSS: 250.3Hz.

Turn to CH16 in manual adjust

mode and press PTT.

250.3Hz

CTCSS

11. CTCSS

Deviation

1. TX Center. Turn to CH4

(wide) and CH4 (narrow) in

manual adjust mode. Adjust by

pressing PTT or MONI. Radio Communication

Test Set

LPF:300Hz

ANT


0.65kHz±

100Hz(Wide)

0.4kHz±

100Hz(Narrow)

12. CDCSS

Deviation

1. TX Center. Turn to CH5

(wide) and CH7 (narrow) in

manual adjust mode. Adjust by



0.65kHz± 100Hz(Wide)

0.4kHz±

100Hz(Narrow)

13. High/low

Power




switch N/W).

Radio Communication

Test SetANT

Power

Supply:

6V

Check:

Low: 1.62.5W

High: above 3.5W

14.

Low Battery

Alert Level

1. Turn to CH1 in manual adjust

mode. Adjust the power supply

voltage at 5.3V. Adjust by


Digital Voltmeter

Adjust the level to make

LED just flash.

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Note: In manual adjust mode, when channel selector knob is positioned at channel 1-channel16, MIC jack can’t connect with external cables. After

adjustment is completed, short out the two SELF points and then turn the power on, the radio enters model set mode. Then press PTT to disable

the manual adjust mode.

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TC-500 Disassembly and Assembly

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Disassembly and Assembly

Remove the Battery1. Turn the radio off.

2. Slide the battery latches upwards.

3. Pull the top part of the battery away from the radio’s body and lift the battery from the radio.

(See figure 1)

Figure 1

Disassemble main unit (aluminum chassis and PCB)

1. Remove the two screws at the base of the chassis.

2. Pull the volume knob and selector knob off.

3. Remove the antenna at top of the radio.

4. Remove the screw of the microphone jack cover and pull the jack cover off. (See figure 2)

S c r e w

S c r e w

V o l u m e K n o b

J a c k C o v e r

C h a n n e l

S e l e c t o r K n o b

Figure 2

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Pull the chassis upwards and then pull the chassis away from the front cover. (See figure 3)

Figure 3

The disassembly is shown as the figure 4.

Figure 4

Disassemble PTT button

Push the PTT button in indicated direction until out of the cover. (See figure 5)

Figure 5

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Assemble PTT button

Paste double-coated tape to the cover. And then press the PTT button into the corresponding opening in

the cover. (See figure 6)

Figure 6

Attach the battery

1. Fit the extensions at the bottom of the battery into the slots on the radio chassis.

2. Press the top part of the battery towards the radio until a click is heard. (See figure 7)

Figure 7

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TC-500 Exploded View

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Exploded View

2

3

3

1

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TC-500 Part List 2

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Part List 2

Part List 2

No. P/N Description Qty.

A 14042563 TC500 Mic cover screw 2.5×6mm 1.00

B 14062041 PTS2.0×4 Screw (cross) (low-carbon steel, color zinc plated) 11.00

C 14052009 Machine screw M2×9 (color zinc) 2.00

D 14066082 Machine screw, cross pan head PMS2.5*4 carbon steel, color zinc plated 2.00

E 14042550 Machine screw 2.5X5 (T9 cross recess head) 2.00

1 1704412A TC-500 Mic net 1.00

2 1604210B TC-500 PTT key 1.00

3 1504013E TC-500 Front case (main unit) (ABS) 1.00

4 14013110 TC2088-311A Liner (knob) 2.00

5 1509106E TC368S Channel selector knob 1.00

6 1509107E TC368S Volumn knob 1.00

7 13090020 Speaker 4 0.5W (036S23) 1.00

8 17064021 TC370 Insulating mat (speaker) φ17*1 1.00

9 19060020 278.378 PTT switch SKHLLBA010 2.00

10 19090020 368 Channel switch RY-6933 1.00

11 1404320A TC-500 Nut (encoder) 1.00

12 14066300 278.378 Nut (switch) 1.0013 1905002B 1688 Switch (volumn) 1.00

14 1504111A TC2100 Positive connector bracket (black) 1.00

15 1604214A TC-500 Battery contact pad 2.00

16 1404327A TC-500 Battery positive terminal 1.00

17 1704401A TC2100 Water-proof sponge (positive terminal) 1.00

18 1604215B TC-500US Water-proof ring 1.00

19 1604211A TC-500 Heat sinking pad 1.00

20 1404317D ★ TC-500 Aluminun chasis 1.00

21 14093102 368S Antenna pedestal (main unit) (SMA-B01) 1.00

22 1504014B TC-500 Rear cover 1.00

23 1404326A TC-500 Latch spring 1.00

24 15040104 TC2108 Battery latch (PC+ABS) 1.00

25 1704407B TC-500 Water-proof PVC sheet (battery) 1.00

26 1404308B TC2100 Negative terminal (battery) 1.00

27 1704414A TC-500 PVC Water-proof cushion 2.00

28 08021050 ★ MIC JACK ISJ-2584-001 1.00

29 08021060 ★ PHONE JACK 2SJ-2435-001 1.00

30 20020015 Lead 0.5×60 red 1.00

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TC-500 Part List 2

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31 2003560B Connection cable ASTVR1 0.35×60MM black 1.00

32 13090011 Mic rubber CZII-64AP 1.00

33 16092020 Cushion (Mic rubber) 1.00

34 1611404A TC-500 Speaker net (non-woven fabric) 1.00

35 1504017A TC-500 Mic cover 1.00

36 15111090 TC3000 Light guide 1.00

37 1409001A TC368 Battery charging connector 3.00

38 14093162 Planar washer 1.00

39 15091042 368 Belt clip (PC+ABS) 1.00

40 1404506C TC600 Belt clip sring (stainless steel) φ1.0mm 1.00

41 14093170 Shaft 1.00

42 1404505B TC-600 Belt clip shrapnel (stainless steel) 0.5mm 1.00

43 1404508A TC-600 Belt clip hardware bracket 1.00

44 1504015G TC-500 Battery front cover 1.00

45 1904017A 1100mAh Ni-MH*5 battery cell (TC-500) 1.00

46 1504016C TC-500 Battery bottom cover 1.00

47 1409311B TC368 Battery positive/negtive pole piece (stainless steel) 2.00

48 1704409B TC-500 Battery sponge cushion 12.5x10x6.0mm 2.00

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TC-500 Packing

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Packing

O w n e r ̀ s M a n u a l

Antenna

Strap

Belt Clip

Adapter

Gift Box

Owner`s Manual

Main Unit

Charger

Battery Pack

8/7/2019 tc-500 S M


TC-500 Specifications

Specifications

Frequency range

400 MHz ~420 MHz

450 MHz ~470 MHz

136 MHz ~150 MHz

150 MHz ~174 MHz

Channel capacity (simplex) 16

Channel spacing 25KHz(wide)/12.5KHz(narrow)

Antenna impedance 50

Microphone impedance 2KΩ

Operation voltage 6V DC

Frequency stability ±2.5×10-6

Transmitter

Carrier frequency error ±2.5×10-6

Carrier output power 4.0W (Hi)/2.0W(Lo)

Modulation sensitivity 12±2mV

Modulation distortion ≤ 5%

Modulation limiting≤

5KHz(wide)/2.5KHz(narrow)

Bandwidth≤

16 KHz(wide)/8.5KHz(narrow)

Audio response From 6 dB/oct. Pre-Emphasis±

3dB

Conducted spurious

emission≤ 7.5 μ W

Adjacent channel power≤

-65 d B

Receiver

Reference sensitivity≤

0.25µV(wide)/0.35uV(narrow)

Unsquelch sensitivity ≤ 0.4µV

Audio power 400mW (4)

Audio distortion≤

5%

Modulation acceptance≥ │

±7 KHz│

(wide)/ │

±3.5KHz│

(narrow)Audio response From 6 dB/oct. De-Emphasis +2dB -8dB

Co-channel rejection≥

-8 d B

Blocking≥

85d B

Adjacent channel selectivity≥

60 d B(wide)/50dB(narrow)

Spurious response rejection≥

60 d B

Intermodulation rejection ≥ 60 d B(wide)/50dB(narrow)

tc-500 s m

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