RECEIVE AND TRANSMIT 4

DRF gain and squelch

The IC-706MKIIG uses the same control, [RF/SQL], to adjust one of either the RF gain or the squelch. [RF/SQL] adjusts either the RF gain or the squelch depending on the operating mode selected and the condition of the RF gain item in initial set mode (p. 51; also see the table at right).

The RF (Radio Frequency) gain is used to adjust the receiver gain.

• This control should be set to the 11 o’clock position for

normal use.

[RF/SQL] control priority

Initial set mode

USB, LSB,

AM, FM, WFM

setting

CW, RTTY

 

SQL*1

SQL

SQL

AUTO

RF GAIN

SQL

 

 

 

RF • SQL*2

RF/SQL

RF/SQL

 

 

 

*1Default; *2Default for USA version.

• Shallow rotation moves the S-meter to the right indicating

the signal strength which can be received.

The SQUELCH removes noise output from the speaker (closed condition) when no signal is received. The squelch is particularly effective for FM. It is also available for the other modes.

Note: The recommended position for RF gain is the 11 o’clock position since this sets RF gain to the max.

When set to AUTO, SQL is active in FM/WFM/AM; RF is active in SSB/CW/RTTY.

Max. RF gain position

AF RF/SQL

RF gain

Same effect as at

decreases

the center position

When operating in FM, first rotate the control fully coun- terclockwise. Then, rotate the control clockwise to the point where the noise just disappears. This is the best position. The squelch does not open for weak signals when it is set too deep.

A segment appears in the S-meter to indicate the S-meter squelch level.

Noise squelch

S-meter squelch

threshold point

threshold point

 

AF

RF/SQL

Squelch

Deep

opens

 

DSimple band scope

This function allows you to visually “sweep” an area surrounding the set frequency for other signals. Detected signals are indicated graphically in the dot matrix section of the display.

Set a mode and frequency.

Select G1.

Push [DISPLAY] 1 or 2 times if M or S appears.

Push [MENU] one or more times to select G1.

Push [F-1] one or more times to select the desired steps.

Each dot corresponds to a step for the indicated fre- quency.

0.5, 1, 2, 5, 10, 20 and 100 kHz can be set for the scope step.

Push [F-3] to start the sweep.

___” (below SWP) flashes while sweeping.

The receive audio is muted while sweeping.

Rotate the main dial if you want to monitor the dis- played signals.

The sweep marker indicates the location of the dis- played frequency in the sweep readout.

If the displayed frequency is outside of the sweep read- out (determined by the sweep width), the sweep mark- er flashes.

Push [F-2] to return the frequency to the start of a sweep.

The sweep marker moves back to the center position.

Note: Use the attenuator or turn OFF the preamp when using the band scope on a band containing a lot of noise.

1k

 

SWP

 

2k

 

SWP

([F-1])

 

 

 

Select sweep width

2k

 

SWP

([F-3])

 

 

 

Start sweep

2k

 

SWP

Sweep is finished

 

([F-3] again)

 

 

sweep marker

Move sweep marker

 

 

 

2k

 

SWP

 

(main dial)

2k

 

SWP

Returns to previous

 

frequency ([F-2])

22

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Icom I706MKTMG, IC-706MKIIG instruction manual RF gain and squelch, Simple band scope, RF/SQL control priority

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.