Programming a Group Code, All calls, Special

PROGRAMMING A GROUP CODE

Using a group code relieves you from receiving unwanted packets. The APRS on this transceiver supports the following three types of group codes.

All calls:

Program a 6-digit code that always starts with AP. You will receive all APRS packets which include AP in group codes. It does not matter whether or not the subsequent 4 digits match. The default on this transceiver is APK001; K001 stands for KENWOOD Ver.1.

Note: APRS packets, which are generated via various methods, include various codes instead of group codes. Using “All calls” allows you to receive packets which include the following codes.

GPS	SYM	QST	CQ	BEACON

ALL	SKYWRN	MAIL	ID	SPCL

Special:

Enter “SPCL”. You will receive only APRS packets that include SPCL as a group code. This code is generally programmed by all stations at a special event.

Alternate net:

Program any other code with a maximum of 6 digits. You will receive only APRS packets that include the exact same code. In order to reject other packets, this code should not include characters specified by the above two types.

Note: Menu 2–A allows you to enter up to 9 digits (not 6 digits) because of possible future enhancement of the group code system.

1Press [MENU] to enter Menu mode.

2Press [2], [A] to select “2–A (UNPROTOCOL)”.

•The display for entering characters appears; the first digit blinks. The default is APK001 (All calls).

STA CON

96 BCONDUP

5 7 9

3Press [UP]/ [DWN] to select a character.

•You can enter 0 to 9, A to Z, and –.

4Press [OK].

•The cursor moves to the next digit.

5Repeat steps 3 and 4 to enter up to 9 digits.

•Pressing [OK] after selecting the 9th digit completes the programming.

•To complete programming after entering less than 9 digits, press [OK] twice.

•Each press of [ESC] causes the cursor to move backward.

•Pressing [A/B] deletes the digit at which the cursor is blinking.

6Press [MENU] to exit Menu mode.

You can also use the keypad to enter alphanumeric characters in step 3. For example, each press of [TNC] switches entry as A, B, C, then 2. Press [ENT] to enter –.

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.

Kenwood TH-D7A instruction manual Programming a Group Code, All calls, Special, Alternate net

Models: TH-D7A