Method 1 Specific path, Method 2 Generic path

Let us describe four basic methods for editing a packet path.

Method 1 (Specific path):

Program the call signs of one or more digipeaters in the sequence of transfer relay; ex. “KD6ZZV,KF6RJZ”.

Method 2 (Generic path):

Program “RELAY” and/or “WIDE”; ex. “RELAY,WIDE”. In this example, APRS data is transferred to any relay-type digipeater near your position first, then to any wide-type digipeater. You can also program more than one “WIDE”. If you enter “WIDE,WIDE” for example, APRS data will be transferred to any wide-type near your position first, then to another wide-type. This method relieves you from specifying the call signs of digipeaters.

Method 3 (WIDEN-N path):

Program “WIDEN-N”, where both Ns indicate the number of wide-type digipeaters to be used for relay. If you enter “WIDE3-3” for example, APRS data will be relayed by three digipeaters in any direction.

Note: This method is supported only by advanced APRS networks.

Method 4 (SSID path):

Program a single number 1 to 15. You can easily specify the number of digipeaters that will be used for relay. You can also specify which directions of digipeaters relative to your position will be used. See the table.

Note: This method is supported only by advanced APRS networks.

Parameter	Number of	Direction
Parameter	digipeaters	Direction
	digipeaters
1	1	All

2	2	All

3	3	All

4	4	All

5	5	All

6	6	All

7	7	All

8	2 (or more) 1	North
9	2 (or more) 1	South

10	2 (or more) 1	East

11	2 (or more) 1	West
12	Many 2	North

13	Many 2	South

14	Many 2	East
15	Many 2	West

1The first digipeater which receives your APRS data specifies the entire route to the destination before forwarding; often 2 digipeaters are used in total.

2The digipeater which receives your APRS data specifies the call sign of the next digipeater before forwarding. This is repeated until your APRS data reaches the destination.

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 Method 1 Specific path, Method 2 Generic path, Method 3 WIDEN-N path

Models: TH-D7A

Method 1 (Specific path):

Method 2 (Generic path):

Method 3 (WIDEN-N path):

Method 4 (SSID path):

Parameter

Number of

Direction

Many 2

North

South

East

TH-D7A specifications