RECEIVE AND TRANSMIT 4

DOptional AH-4AUTOMATIC ANTENNA TUNER operation

The AH-4 matches the IC-706MKIIG to a long wire antenna more than 7 m/23 ft long (3.5 MHz and above).

•See p. 14 for connection.

•See the AH-4 instruction manual for AH-4 installation and antenna connection details.

AH-4 setting example:

For mobile operation

Optional AH-2b antenna element

AH-4 operation

Tuning is required for each frequency. Be sure to re-tune the antenna before transmitting when you change the frequency—even slightly.

➀Set the desired frequency in an HF band.

•The AH-4 will not operate on frequencies outside of ham bands.

USB

For outdoor operation

Long wire

RWARNING: HIGH VOLTAGE!

NEVER touch the antenna element while tuning or transmitting.

NEVER operate the AH-4 without an antenna wire. The tuner and transceiver will be damaged.

NEVER operate the AH-4 when it is ungrounded.

➁Push and hold [TUNER] for 2 sec.

•The [TUNER] light flashes and “CW” appears while tun- ing.

Push [TUNER] for 2 sec.

CW

➂The [TUNER] light lights constantly when tuning is complete.

•When the connected wire cannot be tuned, the [TUNER] light goes out, the AH-4 is bypassed and the antenna wire is connected to the antenna connector on the transceiver directly.

Transmitting before tuning may damage the trans- ceiver. Note that the AH-4 cannot tune when using a 1⁄2 λ long wire or multiple of the operating frequency.

Note: The AH-4 can be used for HF bands and the 50 MHz band only.

➃To bypass the AH-4 manually, push [TUNER].

CONVENIENT

•PTT tune function

The AH-4 is always tuned when the PTT is pushed after the frequency is changed (more than 1%). This function removes the “push and hold [TUNER]” oper- ation and activates first transmission on the new fre- quency. This function is turned ON in initial set mode, item 13 (p. 54).

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Icom I706MKTMG, IC-706MKIIG Optional AH-4AUTOMATIC Antenna Tuner operation, AH-4 operation, PTT tune function
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I706MKTMG, IC-706MKIIG specifications

The Icom IC-706MKIIG and the Icom IC-706MKTMG are two prominent transceiver models known for their compact design and versatile capabilities. These radios cater to amateur radio enthusiasts, providing a wide range of features suitable for both HF and VHF/UHF operations.

The IC-706MKIIG is a well-regarded dual-band transceiver that operates on HF frequencies from 160 meters to 10 meters and VHF/UHF from 6 meters to 70 centimeters. One of its main features is its compact footprint, making it an excellent choice for mobile operations as well as fixed installation. The transceiver provides up to 100 watts of output power on HF and 50 watts for VHF/UHF, ensuring robust performance for various amateur applications.

On the other hand, the IC-706MKTMG brings the same foundational performance but includes enhanced features aimed at improving user experience. It boasts a high-resolution LCD display with clear visibility under varying light conditions. This model offers advanced digital signal processing (DSP) technology, enhancing audio clarity and reducing noise interference. The built-in auto notch filter and noise blanker efficiently eliminate unwanted signals, allowing users to focus on their desired contacts without distraction.

Both models support multiple modes of operation, including SSB, CW, AM, and FM, which provides versatility in how users can communicate. They feature an easy-to-navigate menu system, allowing users to access settings quickly. With built-in memories and a large number of program settings, operators can customize their experience and quickly switch between configurations.

One standout feature of the IC-706 series is its built-in antenna tuner, which helps match the transceiver to various antenna types, optimizing performance and simplifying setup. The radios also include support for external control via CAT commands, accommodating advanced integration into larger station setups.

In terms of user connectivity, both transceivers come equipped with USB ports and support sound card capabilities, enabling digital modes such as PSK31 and RTTY easily. This integration enhances versatility, catering to modern digital communications alongside traditional voice modes.

Robust, reliable, and feature-rich, the Icom IC-706MKIIG and IC-706MKTMG models stand out as exemplary choices for amateur operators looking for a compact yet comprehensive transceiver solution. Their combination of technologies and characteristics continues to make them popular in the ham radio community.
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