TYT TH-7800 User Manual

TH-7800 User Manual

Thank you very much for choosing the TH-7800 dual band mobile transceiver. The TH-7800 provides you with a reliable, clear and efficient communications service

which in enhanced by an ergonomic design and intuitive user controls. Inherently reliable you can depend on your TH-7800 no matter where you are in the harsh environment. The TH-7800 is cost-effective, multi-functional and will meet all of your VHF/UHF band communication needs no matter what the situation. For a full explanation of the many features, functions and the care free maintenance of your new mobile please take the time to read the user manual enclosed with your transceiver.

CONTENTS

User Safety Information Package includes Main Features Initial Installation

Mobile Installation

Installation methods Mounting bracket installation Separation cable connection

DC Power Cable Connection

Fixed Station Operation Replacing Fuses Antenna Connection Accessories Connections

External Speaker Microphone

Getting Acquainted

Front Panel Operation

01 01 02 03

03 04 04

05 06 07 08 09

09 10

Display Rear Panel Microphone

Basic Operation

Switching the power on/off Adjusting the volume Adjusting the squelch level Selecting the operating band Selecting the frequency band Selecting desired frequency Receiving Transmitting Selecting the power output level

Memory Operation

Memory Channel Storage Storing independent transmit frequencies ("Odd Splits") Memory Recall Memory Tuning

14 15 15

17 17 17 17 18 18 19 19 19

20 21 21 21

Deleting Memories

2 Tone & 5 Tone Signaling Operation

34 HOME Channel Memory Hyper Memory Channel Memory Only Mode

Some Advanced Features

Repeater Operation

CTCSS Tone / DCS Code Operation

DCS Code Inversion Tone Search Scanning User-defined CTCSS Tone / DCS Code Operation

Various Scanning

VFO Scanning Memory Scanning Set a "Skipped" Channel During Memory Scan Operation Preferential Memory Scanning Programmable Memory Scan Priority Channel Scanning (Dual Watch)

22 22 23

24 25

27 27 28

29 29 30 30 31 31

Auto Range Transponder System (ARTS) Operation Cross-band Repeater Operation Microphone Key Assignments

Menu Operation Factory Reset Operation Simple Trouble Shooting Specifications

38 47 48 49

DTMF Signaling Operation

User Safety Information

Do not attempt to configure your transceiver while driving. This transceiver is designed for a 13.8V DC power supply. Do not use a 24V battery to power on the transceiver. Please keep it away from interferential devices (Such as TV s, generators, etc.) Do not expose the transceiver to long periods of direct sunlight or place it close to heating appliances. If an abnormal odour or smoke is detected coming from the transceiver, turn off the power immediately and contact your dealer. Do not transmit with high power for extended periods or the transceiver may overheat.

Package includes:

Radio unit x 1 Keypad DTMF microphone x 1 Radio body mounting bracket x 1 DC power cable with fuse holder x 1 Front controller separation cable x 1 Front controller mounting bracket x 1 Screw packs x 1 Protection fuses x 1 User manual x 1

Main Features

Cover 144 / 430 MHz four transmitting bands Wide band AM receiving and FM receiving for 108-180MHz, 134-174MHz, 350-520MHz (except cell phone).

Independent controls for each left and right band V+U simultaneous receive capability Built-in V+U cross-band repeater and full duplex capability 800 memory channels and independent setting per channel 50W of high power output for VHF band and 40W for UHF band Standard 50 groups of CTCSS tone and 104 groups of DCS code User-defined CTCSS tone & DCS code capability DTMF / 2-Tone / 5-Tone for selective calling Voice compander and encryption scramble Automatic Repeater Shift (ARS) Detachable front controller and remote mounting capability Ultra-size LCD dual display screen User-programmable microphone keys

Initial Installation

Mobile Installation

To install the transceiver select a safe and convenient location inside your vehicle that minimizes danger to your passengers and yourself while the vehicle is in motion. Consider installing the unit at an appropriate position so that knees or legs will not strike it during sudden braking of your vehicle. Try to pick a well ventilated location that is shielded from direct sunlight.

Mounting bracket installation

1. Drill 4 holes where the mounting bracket is to be installed.

2. Insert the supplied screws, nuts and washers through the mounting bracket and tighten.

3. Adjust the angle for your suitable position.

Installation methods

1 – Single Body Installation

Transceiver

The supplied mounting bracket can be used for the main unit installation.

2 – Remote Control Installation

Front panel

Main body

The supplied remote controller mounting bracket and separation cable can be used for installation.

LOW

V/M

MHz

SCN

LOW

RPT

TONE

SUB

V/M

SCN

Separation cable connection

A separation cable (4.5m; 14.8 ft) is supplied with the TH-7800. Connect the controller and the main unit using with the separation cable as follows.

Main unit

SQL

VOL

LOW

V/M

Controller

SQL

VOL

SUB

TONE

RPT

MHz

SCN

LOW

SCN

V/M

DC Power Cable Connection

Note: Locate the power input connector as close to the transceiver as possible.

The vehicle battery must have a nominal rating of 12V. Never connect the transceiver to a 24V battery. Be sure to use a 12V vehicle battery that has sufficient current capacity. If the current to the transceiver is insufficient the display may darken during transmission or transmitting output power may drop excessively.

1. Route the DC power cable supplied with the transceiver directly to the vehicle's battery terminals using the shortest p ath from the transceiver. We suggest you do not use the cigarette lighter socket as some cigarette lighter sockets intr oduce an unacceptable voltage drop. The entire length of the cable must be dressed so it is isolated from heat, moistu re and the engine secondary (high voltage) ignition system/cables.

2. After installing the cable, in order to avoid the risk of damp, please use heat-resistant tape to tie together with the fuse box. Do not forget to reinforce the whole cable.

3. Confirm the correct polarity of the connections, then attach the power cable to the battery terminals: Red connects to the positive (+) terminal and black connects to the negative (-) terminal.

4. Reconnect any wiring removed from the negative terminal.

5. Connect the DC power cable to the transceiver's power supply connector. Press the connectors firmly together until the locking tab clicks.

Fixed Station Operation

In order to use this transceiver for fixed station operation you will need a separate 13.8V DC power supply (not included). Please contact your local dealer about it.

The recommended current capacity of your power supply is 12A.

1. Connect the DC power cable to the regulated DC power supply and ensure that the polarities are correct. (Red: positi ve; Black: Negative). Do not directly the transceiver to an AC outlet. Use the supplied DC power cable to connect the transceiver to a regulated power supply. Do not substitute a cable with smaller gauge wires.

2. Connect the transceiver's DC power connector to the connector on the DC power cable.

3. Press the connectors firmly together until the locking tab clicks. Note: Before connecting the DC power to the transceiver be sure to switch the transceiver and the DC power supply OFF. Do not plug the DC power supply into an AC outlet until you make all connections.

Regulated power supply

Red

Black

Regulated power supply

Ext. Power jack

DC power cable

DC power cable with fuse holder

Replacing Fuses

If the fuse blows, determine the cause then correct the problem. After the problem is resolved replace the fuse. If newly installed fuses continue to blow, disconnect the power cable and contact your local dealer for assistance.

Fuse Location

Transceiver

Supplied Accessory DC power cable

Only use fuses of the specified type and rating otherwise the transceiver could be damaged. Note: If you use the transceiver for a long period when the vehicle battery is not fully charged or when the engine is OFF, the battery may become discharged and will not have sufficient reserves to start the vehicle. Avoid using the transceiver in these conditions.

Fuse Current Rating

15A 20A

Antenna Connection

Before operating install an efficient well-tuned antenna. The success of your installation will depend largely on the type of antenna and its correct installation. The transceiver can give excellent results if the antenna system and its installation are given careful attention. Use a 50* impedance antenna and low-loss coaxial feed-line that has a characteristic impedance of 50*, to match the transceiver input impedance. Coupling the antenna to the transceiver via feed-lines having a impedance other than 50* reduces the efficiency of the antenna system and can cause interference to nearby broadcast TV receivers, radio receivers and other electronic equipment. Note: Transmitting without first connecting an antenna or other matched load may damage the transceiver. Always connect the antenna to the transceiver before transmitting. All fixed stations should be equipped with a lightning arrester to reduce the risk of fire, electric shock and transceiver damage.

Accessories Connections

External Speaker

If you plan to use an external speaker, choose a speaker with an impedance of 8*. The external speaker jack accepts a

3.5mm mono (2-conductor) plug.

Microphone

For voice communications connect a microphone equipped with an 8-pin modular plug into the modular socket on the side of the main unit. Press firmly on the plug until the locking tab clicks. Attach the supplied microphone hanger in an appropriate location using the screws included in the screw set.

Note: External speaker output adopts double port BTL. Please be aware that the speaker can't connect to the ground otherwise the speaker will fault. The wrong connection way is as below:

Error

Ground

MIC

5 6

LOW

V/M

MHz

SCN

LOW

RPT

TONE

SUB

V/M

SCN

Antenna

Microphone connector

External speaker

Getting Acquainted

Front Panel Operation

VOL

NO. KEY

LEFT DIAL

LEFT VOL/SQL2

LEFT [LOW]

SQL

LOW

V/M

SCN

MHz

LOW

RPT

V/M

TONE

SUB

SCN

SQL

VOL

43 5

FUNCTION

1. Tuning dial for the "left" band.

2. Short press the knob to set the "left" band as the "Main" band.

3. Enable rapid tuning (in 1 MHz steps) when the "left" band is set to be the "Main" band in VFO mode.

4. Press and hold in this knob for 1/2 second to toggle the operating band on the left side as follows: 144 MHz -> 350 MHz -> 430 MHz...

1. The outer VOL (Volume) control adjusts the "left" receiver speaker audio level.

2. Short press the knob to switch single receive mode "on" and "off".

3. Press and hold this knob for 1/2 second to switch the front panel keys LOCK feature "on" and "off".

4. The inner SQL (Squelch) control adjusts the "left" receiver background noise.

1. Short press the key to switch power output level of the "left" band (LOW-MID2-MID1-HIGH).

2. Press and hold in this key for 1/2 second to switch memory display mode between "Frequency" and "Channel Tag" when the "left" band is set to the Memory mode or Home Channel.

LEFT [V/M]

LEFT [HM]

LEFT [SCN]

[SET]4

RIGHT [LOW]

(Default)

RIGHT [MHz]

(Key Mode 2)

RIGHT [V/M]

(Default)

RIGHT [RPT]

(Key Mode 2)

1. Short press the key to switch frequency control for the "left" band between the VFO and Memory mode.

2. Press and hold in this key for 1/2 second to shift to the "Memory Tuning" feature when the "left" band is set to the Memory mode.

1. Short press the key to recall a favorite "HOME" frequency memory.

2. Press and hold in this key for 1/2 second to activate Priority Channel Scanning under VFO or MR mode.

1. Short press the key to activate the Scanner on the "left" band.

2. Press and hold in this key for 1/2 second to set up the Scan Skip List or Preferential Scan List under MR mode.

1. Short press the key to enter the Menu mode.

2. Press and hold in this key for 1/2 second to transfer the contents of the Main band VFO into a Memory system.

1. Short press the key to switch power output level of the "right" band (LOW-MID2-MID1-HIGH).

2. Press and hold in this key for 1/2 second to switch memory display mode between "Frequency" and "Channel Tag" when the "right" band is set to the Memory mode or Home Channel.

1. Short press the key to allow tuning in 1 MHz steps on the "Main" band VFO.

2. Press and hold in this key for 1/2 second to allow tuning in 10 MHz steps on the "Main" band VFO.

1. Short press the key to switch frequency control for the "right" band between the VFO and Memory mode.

2. Press and hold in this key for 1/2 second to shift to the "Memory Tuning" feature when the "right" band is set to the Memory mode.

1. Short press the key to change the frequency shift direction: RPT - (minus shift), RPT + (plus shift), or RPT OFF (simplex).

2. Press and hold in this key for 1/2 second to reverse TX and RX frequencies on the "Main" band during split-frequency operation.

+ 19 hidden pages

TYT TH-7800 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual