Command Name

Short

Default

Parameter

Description

 

 

 

 

 

 

 

 

 

Causes the TNC to display the current status of all the

 

 

 

 

commands. You can also specify a class identifier A, C, H, I,

 

 

 

 

L, M, or T to display the status of only the desired command

 

 

 

 

class. Enter a space between the command name and a

 

 

 

 

class identifier; ex. DISPLAY H.

DISPLAY

DISP

A (ASYNC): RS-232C port parameters

C (CHAR): Special TNC characters

 

 

 

 

 

 

 

 

H (HEALTH): Counter parameters

 

 

 

 

I (ID): ID parameters

 

 

 

 

L (LINK): TNC-to-TNC link status

 

 

 

 

M (MONITOR): Monitor parameters

 

 

 

 

T (TIMING): Timing parameters

 

 

 

 

 

DWAIT

DW

30

0 ~ 250

Specifies the interval from no carrier detection until execution

of transmission. The unit of the parameter is 10 milliseconds.

 

 

 

 

 

 

 

 

 

ECHO

E

ON

ON/ OFF

When ON, causes the TNC to echo received characters to the

computer.

 

 

 

 

 

 

 

 

The other station sends a notice (packet) to you if it is not

FIRMRNR

FIR

OFF

ON/ OFF

ready to receive data. When ON, receiving such a notice

causes the TNC to suspend transmission until it receives a

 

 

 

 

 

 

 

 

“ready” notice.

FLOW

F

ON

ON/ OFF

When ON, starting key entry causes the computer to stop

displaying received packets.

 

 

 

 

FRACK

FR

3

0 ~ 250

Specifies the interval from one transmission until retry of

transmission. The unit of the parameter is 1 second.

 

 

 

 

GBAUD

GB

4800

4800/ 9600

Selects 4800 or 9600 bps as the transfer rate between the

TNC and the GPS receiver.

 

 

 

 

 

 

 

 

 

 

 

 

0 ~ 159

Specifies the content of data to be output to the GPS receiver;

GPSSEND

GPSS

this data is used to program the default settings on the

characters

 

 

 

receiver. The output data is not stored in memory.

 

 

 

 

GPSTEXT

GPST

$PNTS

0 ~ 6

Specifies the type of a message to be determined by LTEXT.

characters

 

 

 

 

100

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Kenwood TH-D7A, 144 Dwait, Echo ON/ OFF, Firmrnr FIR OFF ON/ OFF, Flow ON/ OFF, Frack, Gbaud, Gpssend, Gpstext $PNTS

144, 440 MHz TH-D7A, 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.