YEONHWA M TECH TPD-8424 User manual

User Manual
Version #1 (2015-02-27)
Yeonhwa M Tech Co., Ltd.
36 Jeonpa-Ro, 44Beon-Gil, Manan-Gu, Anyang-City, Gyeongg-Do, Korea Tel: [phone]
UHF Transceiver
TPD-8424

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1. TPD-8424 Series Main Features
The TPD-8424 Digital Radio was developed by Yeonhwa M Tech Co., Ltd. to be user-friendly and
compact design, to have various features and to use at the construction / industrial / commercial /
public areas for the safety & convenience of users.
It provides better communication distance, audio quality and volume, duration of use through
digitalization than Analog radio.
The followings are the main features of the TPD-8424 Series Radio.
16 Zones and 32 Channels are selectable. (1zone = Max 32 Channels)
512 CH can be set.
English and Korean setting function.
RF Power setting function.
Short (up to 40 characters) message sending and reception functions.
Encryption mode 16 bit (encryption key Range 0~65535)
Lone Worker mode
Normal scan
5-step VOX (Voice Operated Transmit) can be set
BCL / BCLO function
Time-Out Timer (TOT) function
Emergency / Siren function
Built in Flash Lamp
Etiquette (Vibration) function
Voice recording and playback(Recorder quantity : 63, 1 Recorder : 2minute 30second)
Automatic analog/digital mode detection in receiver mode
5-step S.Q can be set (Analog Analog support).
Remote Radio Stun / Kill / Revive
Speaker volume of 1 Watt
3Lines Mono LCD Display
Aluminum metal Frame Body
Adopt DC+3.7V 2,000mAH high capacity Battery

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2. Specification
2.1 TPD-8424
General
Frequency Range
Frequency Stability
Programmable Channels
Channel Spacing
Digital Vocoder
Dimensions
Weight
Power Source
Current Drain (maximum)
A : 410 ~ 450 MHz, B : 440~470MHz
±1ppm (-30 to +60℃)
16 Zones / 32 Channels
12.5KHz
AMBE++
99mm(H) x 51mm(W) x 21mm(D)
160g
DC +3.7V Li-ion 2,000mAH Battery
Receive mode, rated audio out – 320 (Audio Max)
Transmit mode – 1,800mA
Standby mode – 120mA
Receiver
Sensitivity
Squelch Sensitivity
Selectivity
Spurious and Harmonic Rejection
FM Hum and Noise
Audio Output Power
Audio Distortion
Audio Response
Input Impedance
0.25uV 12 dB SINAD
0.22uV 10dB SINAD
65dB (12.5KHz)
70dB
40dB (12.5KHz)
1 Watt across an 16-ohm load
Less than 3% at rated output
+1, -3 dB from 6dB per octave de-emphasis Characteristic
from 300 ~ 3000Hz
50 ohms
Transmitter
RF Power Output
Spurious and Harmonic
FM Hum and Noise
Audio Distortion
Audio Frequency Response
Output Impedance
3Watt
70dB
40dB (12.5KHz)
3% maximum with 1KHz modulation
+1, -3dB from 6dB per octave pre-emphasis Characteristic
from 300 ~ 3000Hz
50ohms
50 %
Duty Cycle

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3. Checking items in the package
Components could be changed by buyer request.
Radio unit Battery 1 slot charger Antenna
Belt clip Hand strap(option) User manual
Figure 3-1) TPD-8424 series main items
TPD-8424BK : Block Case
TPD-8424BE : Blue Case
TPD-8424OR : Orange Case
TAD-800L : Single Slot Desktop Charger
TAD-800USB : USB Charging Cord Only
TAD-8200 : 2,000mAH Li-ion battery pack
TAD-818X : Ear Speaker

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3.1 Appearance of TPD-8424 Series Radio
Figure 3-2) Appearance of TPD-8424 Series Radio

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Figure 3-3) LCD Indication of TPD-8424 Series Radio
4.1 Basic Button Operations
Button Operation Description
Power ON/OFF
Press and hold the power button for 2 seconds, the device power is turned
ON. When you press the power button for 2 seconds during use, the power is
OFF.
Volume/Menu+/-
Button
+/- Button can adjust the call sound by using, and if you press the [+] button,
the sound will be increases if you press the [-] button, the sound will be
smaller. In the menu, you can move to the menu item.
Up/Down Button
You can change the settings of the Channel that have been set.
You can enter 32 Channel per the call zone (Zone).
In the progress of the menu, you can move the menu item.
Zone Button You can change the order of the call zone that you set.
Menu/OK Button
The button to enter the menu. When you enter the menu, you can make a
choice of each item.
Cancel/Return Button
Using the Button, it will return to the menu on the one stage.
In the menu setting screen, and run the cancellation of the function.
P1, P2, P3 Button
When operating in the Short Key, it is a Programmable Key.
When operating in Long Key (press for longer than 2 seconds);
- P1 is the unlocking button against lock function.
- P2 is Flash On / Off
- P3 is Etiquette On / Off
Contact List Button
The button can be entered directly on the Contact List.
By entering the Contact List you can proceed with individual calls, group
calls, total calls.

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4. Basic operation
Please fully read the instruction manual before use.
This manual provides important information related to radio operation.
4.1 Antenna installation and removal
To install the antenna, insert the antenna into antenna connector and screw the antenna clockwise.
To remove the antenna, screw the antenna counter clockwise.
Figure 4-1) Antenna installation and removal
When installation of the antenna, giving a strong pressure to the Radio or pulling the
antenna with a strong power from the Radio can make damage on the antenna
connector, which may cause the Radio to have a critical problem.
4.2 Battery installation and removal
Removal of the battery is shown in Figure 4-2.
Slide the rear cover in the direction of the top and open the cover. And then remove the battery.
Slide and hold down, the battery is inserted. Insert the back cover to the below hole and press the
cover as shown in Figure 4-3. Then the cover will be equipped.

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Figure 4-2) Battery installation and removal
Figure 4-3) Rear cover mounting
4.3 Belt clip installation and removal
Put the belt clip to belt clip's hole of the radio and tighten the screws as shown in figure 4-4.
Conversely loosen the screws, the belt clip is separated with radio.
Figure 4-4) Belt clip installation and removal

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4.4 External accessory connection
Align the body with accessory hole and push and tighten the screws as shown figure 4-5.
To remove the accessory, loosen the screw and pull out.
Figure 4-5) External accessory connection
4.5 Charging USB
Open the USB cover and connect the micro USB charging adaptor. And the LED will turn on
the red color. When charging is completed, the charging LED will turn green.
Figure 4-6) Charging USB

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5. Radio operation
The definition of the various buttons of the TPD-8424 series is the same as Figure 5-1).
Figure 5-1) TPD-8424 Series button definition
5.1 Power ON/OFF Button
When the power ON / OFF button pressed for more than 3 seconds, start-up sound occurs with
company logo and the radio turns ON. Push again power ON/OFF button while the radio power is
ON, the power is OFF with "Good bye" sound.
5.2 PTT Button
Pressing PTT button, the radio mode is transmission and releasing the button, it is receiving mode.
It is recommended to talk 5~10cm away from the microphone for the best voice communication.
5.3 ZONE Button (Program settings)
When you press the ZONE button, the registered ZONE which registered by program is changed to
a step-by-step and can be select your request channel use by UP / DOWN buttons.
5.4 MENU/ENTER Button
When you press the NENU / ENTER button, currently programmed menu is displayed and you can
select a desired menu using by VOLUME + / LEFT button or VOLUME- / RIGHT button.