4 RECEIVE AND TRANSMIT

Tone squelch operation

Tone squelch operation is a method of communica- tions using selective calling. Only received signals having a matching tone will open the squelch. Before communicating using tone squelch, all members of your party must agree on the tone squelch frequency to use.

Push [MODE] one or more times to select FM mode.

Push and hold [DISPLAY] to enter Quick Set mode.

Push [MENU] one or more times to select item Q7

TONE SQL.

[Y]/[Z] or [M-CH] can also be used.

Rotate the main dial to select the desired subaudi- ble tone frequency.

Available tone frequencies are the same as for repeater tone operation (see previous page).

Q7 TONE SQL

Set the tone frequency (quick set mode).

See p. 49 for setting de- tails and available fre- quencies.

Select M4 and turn the tone squelch function ON.

Push [(F-3)TON] to toggle tone squelch opera- tion ON and OFF.

When tone squelch is turned ON, “TSQL” appears in the display.

Communicate in the usual manner.

Push [PTT] to transmit; release to receive.

 

 

 

FM

 

TSQL SPL

 

 

 

 

S1 3 5 7 9

20 40

60dB

VFO A

PO

5

10

 

 

CH

M4 VOX DUP TON

Tone scan operation

By monitoring a signal that is being transmitted on a repeater input frequency, you can determine the tone frequency necessary to open a repeater.

During tone squelch or repeater operation, push and hold [DISPLAY] to enter Quick Set mode.

Push [MENU] one or more times to select item Q8 T-SQL SCN during tone squelch operation, or

Q8 RPTR-T SCN during repeater operation.

[Y]/[Z] or [M-CH] can also be used.

Push [(F-3)SCN] to toggle tone scan operation ON and OFF.

While scanning tone frequencies are displayed instead of the operating frequency.

When a matched tone is detected, tone scan automati- cally stops, the matched tone is displayed and the repeater tone (or tone squelch tone) setting is automat- ically adjusted accordingly.

Push [DISPLAY] to return to the main menu.

FM TSQL During tone squelch op-

eration.

S1 3 5 7 9 20 40 60dB

PO

5

10

Q8 T-SQL SCN

FM

 

T

During repeater operation.

 

S1 3 5 7 9 20 40 60dB

PO

5

10

Q8 RPTR-T SCN

31

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Icom IC-706MKIIG, I706MKTMG Tone squelch operation, Tone scan operation, ➅ Communicate in the usual manner

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.