TROUBLESHOOTING

1The problems described in this table are commonly encountered operational malfunctions and are usually not caused

2

by circuit failure.

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

Problem

Probable Cause

 

Corrective Action

Ref. Page

 

4

 

 

 

 

 

Nothing appears on the

1 Low supply voltage

1 Recharge the battery pack or replace

2, 4

 

5

display when the

 

 

the batteries.

 

 

6

transceiver is switched

2 If using the optional DC cable:

2

 

 

 

7

ON, or the display is

a) Bad power cable or connections

 

a) Check the power cable and

 

 

blinking ON and OFF.

 

5

 

8

 

 

 

connections, then correct/replace

 

 

 

 

 

as necessary.

 

 

9

 

 

 

 

 

 

b) Open (blown) power supply fuse

 

b) Investigate the cause for the

—

 

 

 

 

 

10

 

 

 

open fuse. Replace the fuse.

 

 

 

 

 

 

 

 

 

11

Most keys and the

1 Transceiver Lock is ON (Key icon is

1

Press [F] (1 s) to switch OFF

50

 

12

Tuning control do not

visible).

 

Transceiver Lock.

 

 

function.

2 The transceiver is in Channel

2

Press [A/B]+ POWER ON to exit

31

 

13

 

 

Display mode.

 

Channel Display mode.

 

 

14

 

 

 

 

 

3 Tone Alert is ON (Bell icon is

3 Press [F], [ENT] to switch OFF Tone

47

 

15

 

visible).

 

Alert.

 

 

16

 

4 Packet data was being transmitted

4 Operate the keys or the Tuning

—

 

 

using the data band.

 

control after transmitting of packet

 

 

17

 

 

 

 

 

 

 

data is completed.

 

 

 

 

 

 

 

 

18

You cannot select the

The current frequency step size does

Select the appropriate frequency step

46

 

19

exact desired frequency

not allow the frequency to be selected.

size.

 

 

20

using the [UP]/ [DWN]

 

 

 

 

 

or Tuning control.

 

 

 

 

 

21

 

 

 

 

 

You cannot recall any

You have stored no data in any of the

Store the desired frequencies in

27

 

22

memory channels.

memory channels using the current

memory channels using the current

 

 

23

 

band.

band.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

90

Page 95 Page 97
Page 96
Image 96
Kenwood TH-D7A, TH-D7E Troubleshooting, Problem Probable Cause Corrective Action, Press A/B+ Power on to exit
Page 95 Page 97

TH-D7E, TH-D7A specifications

The Kenwood TH-D7A is a sophisticated handheld transceiver designed especially for amateur radio enthusiasts. It combines advanced features with user-friendly operation, making it a popular choice among both beginners and seasoned operators.

One of the standout features of the TH-D7A is its dual-band capability, allowing users to operate on both the 2-meter (144 MHz) and 70-centimeter (440 MHz) bands. This dual-band functionality gives operators increased flexibility and access to a wider range of communication channels. Additionally, the transceiver supports the simultaneous transmission and reception of two different frequencies, allowing for efficient monitoring of multiple communications.

The TH-D7A is equipped with an impressive 1,000 memory channels, which can be organized into 100 memory groups. This allows users to store a vast amount of frequencies and access them easily when needed. The transceiver also provides a wide frequency coverage, extending from 144 to 148 MHz and from 430 to 450 MHz in the VHF and UHF bands, respectively.

Another remarkable feature of the TH-D7A is its built-in Automatic Packet Reporting System (APRS) capabilities. This technology enables users to share real-time location data, send and receive messages, and provide status updates, making it an invaluable tool for outdoor activities and emergency communication.

In terms of construction, the TH-D7A features a durable and compact design, making it suitable for both portable and mobile use. The large, easy-to-read LCD display provides clear visibility in various lighting conditions. Additionally, the transceiver supports a variety of advanced voice modes, including FM, AM, and SSB (Single Side Band), offering a versatile communication experience.

The TH-D7A also incorporates a wide range of digital modes, enhancing its operational capabilities. With the included programming software, users can easily customize their settings, manage memory channels, and update firmware, ensuring the transceiver remains compatible with evolving technologies.

Power management is another highlight, as the TH-D7A provides adjustable output power levels, enabling users to conserve battery life when needed. Overall, the Kenwood TH-D7A is a feature-rich handheld transceiver that combines robust performance with innovative technology, making it a top choice for amateur radio operators seeking reliable communication in diverse environments. Its versatility, combined with its intuitive design, ensures it meets the needs of users across all experience levels.
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