Reverse Function, Automatic Simplex Check ASC

REVERSE FUNCTION

1The reverse function exchanges a separate receive and

2transmit frequency. So, while using a repeater, you can manually check the strength of a signal that you receive

3directly from the other station. If the station’s signal is

4strong, both stations should move to a simplex frequency

5and free up the repeater.

6			MHz	325
				145
				.
7	144	.725		MHz
8	144
8
9				144.725	MHz
9				144.725
10						REV ON
11	TX: 144.725 MHz			TX: 144.725 MHz TX: 144.725 MHz		TX: 145.325 MHz
12	RX: 145.325 MHz			RX: 145.325 MHz RX: 145.325 MHz		RX: 144.725 MHz
12

Press [REV] to switch the Reverse function ON (or

13OFF).

14• “R” appears when the function is ON.

STA CON PACKET96 BCONDUP

16	5	7	9
	5	7	9
17


18

19Note:

20◆ If pressing [REV] places the transmit frequency outside the allowable range, then pressing the PTT switch causes an error beep to sound;

21transmission is inhibited.

22◆ If pressing [REV] places the receive frequency outside the allowable range, an error beep sounds and no reversal occurs.

23◆ Automatic Repeater Offset does not function while Reverse is ON.

◆You cannot switch Reverse ON or OFF while transmitting.

AUTOMATIC SIMPLEX CHECK (ASC)

While using a repeater, ASC periodically monitors the strength of a signal that you receive directly from the other station. If the station’s signal is strong enough to allow direct contact without a repeater, the ASC indicator on the display begins blinking.

Press [REV] (1 s) to switch the function ON.

• “ ” appears when the function is ON.

STA CON PACKET96 BCONDUP

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•While direct contact is possible, the ASC indicator blinks.

•To quit the function, press [REV] momentarily.

Note:

◆Pressing the PTT switch causes the ASC indicator to quit blinking.

◆ASC does not function if your transmit and receive frequencies are the same (simplex operation).

◆ASC does not function while scanning.

◆Activating ASC while using Reverse switches Reverse OFF.

◆If you recall a memory channel or the Call channel that contains Reverse ON status, ASC is switched OFF.

◆ASC causes receive audio to be momentarily intermitted every 3 seconds.

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.

Kenwood 144, 440 MHz TH-D7A instruction manual Reverse Function, Automatic Simplex Check ASC

Models: 144 440 MHz TH-D7A TH-D7A