Icom I706MKTMG, IC-706MKIIG instruction manual Measuring SWR, Spot measurement, Plot measurement

Page 41

■SWR

The IC-706MKIIG has a built-in circuit for measuring antenna SWR while in SSB mode—no external equip- ment or special adjustments are necessary.

RECEIVE AND TRANSMIT 4

☞NOTE: The SWR of ANT1 only can be read since ANT2 has no measuring circuit.

DMeasuring SWR

The IC-706MKIIG can measure SWR in 2 ways:

(A) Spot measurement; or (B) Plot measurement.

(A) Spot measurement

➀Confirm that the output power is over 30 W.

➁Push [MENU] one or more times to select M3.

➂Push [(F3)MET] to select the SWR meter.

➃Push [MODE] one or more times to select CW or RTTY operation.

•Key down or push [PTT] to transmit; then read the actu- al SWR from the meter:

➠≤ 1.5 well matched antenna

➠> 1.5 check antenna or cable connection, etc.

CW

 

 

 

 

 

 

BLANK

S1

3

5

7 9

20

40 60dB

VFO A

SWR

1

1.5 2

3

 

∞

CH

M3 FIL NB

MET

SWR

 

1

1.5

2

3 5

∞ 10

The best match is in this range.

(B) Plot measurement

Plot measurement allows you to measure the SWR over an entire band.

G2 10k

STR

Frequency span

 

Step bar indication

 

Frequency indication mark

 

Measure start indicator

 

qConfirm that the output power is over 30 W. wPush [DISPLAY] twice to select G1.

ePush [MENU] to select G2.

rSet the center frequency for the SWR to be mea- sured.

tPush and hold [(F1)10k] one or more times to select the desired frequency pitch.

yPush and hold [(F2)] one or more times to select the desired step.

uAfter selecting the desired pitch and step, push [(F3)STR] to measure the SWR.

iPush and hold [PTT] to display the SWR in a bar graph readout.

oWhen [PTT] is released, the frequency marker and frequency indication move to the next frequency to be measured.

!0Repeat steps i.and o to measure SWR over the entire frequency range.

!1When the measured SWR is less than 1.5, the antenna is well matched.

Span

 

Push [F-1] for 1 sec. to change the

 

 

selected span.

Step bar

Push [F-2] for 1 sec. to change the step

 

 

bar (3, 5, 7 or 9 steps are available.

 

 

Marker

Indicates the currently active step bar.

 

 

 

Start

 

Flashes while the SWR is being mea-

 

 

sured.

 

 

 

 

 

 

 

Step y

 

 

 

 

 

 

 

 

RTTY

 

 

 

 

 

 

BLANK

S1 3 5

7 9

20

40

60dB

VFO A

PO

5

 

 

10

CH

G2 50k

 

 

STR

Step o

 

 

 

 

 

 

USB

 

 

 

 

 

 

 

 

 

BLANK

S1 3 5

7 9

20

40

60dB

VFO A

PO

5

 

 

10

CH

G2 50k

 

 

STR

4.0

3.5

3.0

2.5

2.0

1.5

1.0

The antenna is well matched in this range

38

Page 40 Page 42
Image 41
Page 40 Page 42
Contents I706MKG Word Definition Rwarning PrecautionsTable of Contents 0MAIN Dial Tension Latch Panel DescriptionFront panel @2PREAMP/ATTENUATOR Switch P.AMP/ATT 2LOCK Switch LockFunction switches Speech Compressor p VOX Function pBREAK-IN p Function pRear and side panels ACC Socket When connecting the ACC conversion cable OPC-599ACC PIN # Name Description Specifications Color 3FUNCTION Indicators 1DOT Matrix Indicators4DSP Indicators Function display➌PTT Switch PTT ➊UP/DOWN Switches UP/DN ➋LOCK Switch LockMicrophone Connector HM-103 Schematic DiagramPL-259 Connector Installation Example Installation and ConnectionsUnpacking GroundingSingle body mounting InstallationStand Front panel separationRtty Terminal Required connectionsAdvanced connections Connecting the PS-125 / PS-85 DC Power Supply Power supply connectionsConnecting a NON-ICOM DC Power Supply Connecting a NON-ICOMConnecting the AT-180 Connecting the AH-4Connecting the IC-PW1 External antenna tuners and linear amplifierWhen first applying power CPU resetting Frequency SettingInitial settings Power onMemory Mode pgs VFO ModeVFO description ExampleProgrammable tuning steps Frequency settingHz and 10 Hz tuning steps Band selectionTS Switch Flow Chart MHz quick tuning stepSSB/CW/RTTY modes Any mode FM/WFM/AM modes Sub dial functionOperating Mode Selection Mode selectionQuick band change function ➁ Push F-1-F-3 to select a band stacking registerFunctions for receive Receive and TransmitIf shift function RIT functionAGC time constant Noise blankerPreamp and attenuator Peak meter holdRF/SQL control priority RF gain and squelchSimple band scope Optional filter selection Filter PresettingFilter ON/OFF SSBNR Noise Reduction function ANF Automatic Notch Filter functionDMeter function Output power and mic gainFunctions for transmit VOX operation Speech compressorTuner Operation Manual TuningOptional AT-180 Automatic Antenna Tuner operation Optional AH-4AUTOMATIC Antenna Tuner operation ➂ The Tuner light lights constantly when tuning is completeAH-4 operation PTT tune functionQuick split function Split frequency operation➀ Select VFO a and set the frequency to 7.057 MHz/CW Split lock function➆ To return to simplex operation, push F-1SPL Repeater operation➄ Push and hold PTT to transmit release PTT to receive Tone scan operation Tone squelch operation➅ Communicate in the usual manner ➂ Push F-3SCN to toggle tone scan operation on and OFFAuto repeater function One-touch repeater functionThis function automatically activates the repeater set Frequency Duplex DirectionConnections for CW Functions for CWCW operation Elec KEYDElectronic CW keyer Quick SET Mode CW reverse modeSetting the electronic keyer CW pitch controlConnections for Afsk Functions for RttyConnections for Rtty FSK Rtty Afsk operation Presetting for RttyRtty FSK operation Packet operation Adjusting the transmit signal output from the TNCConnections for packet Data socketPlot measurement Measuring SWRSpot measurement Memory channels Memory and Scan OperationMemory channel selection Memory clearingMemory/call programming Programming in VFO modeProgramming in memory mode Memory names Frequency transferringCalling up memory names Editing programming memory namesWriting frequencies and operating modes into memo pads Memo padsCalling up a frequency from a memo pad ➀ Select the S1 displayPreparation Scan typesMemory scan operation Programmed scan operationSelect memory scan operation Priority watchData format Remote Jack CI-V InformationCI-V connection example VFO A=B Command TableQuick set mode operation SET ModeInitial set mode operation GeneralQ3 VOX Delay SSB/AM/FM only Quick set mode itemsQ2 MIC Gain SSB/AM/FM only Q4 VOX Gain SSB/AM/FM onlyQ5 Anti VOX SSB/AM/FM only Initial set mode items RF/SQL SQL/AUTO/RFSQL Split Lock split lock Quick Split quick split functionSPL Offset split offset DUP HF duplex offsetPWR on CHK Power on check AM NB Noise blanker in AM modeAuto Rptr auto repeater Scan Resume scan resumeTune Strt auto tuner start 29 9600 Mode Data socket speedPTT Tune PTT tune function Vsend SEL ACC socket outputCI-V Addres CI-V address LVL Spch S-level speechCI-V Baud CI-V data rate CI-V TRN CI-V transceiveFuse replacement MaintenanceMemory backup CleaningPower Supply Receive Problem Possible Cause Solution TroubleshootingTransmit Display Scan Problem Possible Cause Solution Opening the transceiver case Optional INSTALLATIONS/SETTINGSIf filters DOperation InstallationPIN no Description Name AT-180 internal switch descriptionS2 S1 B a Bottom view Internal ViewsTop view Options SP-7EXTERNAL Speaker PS-125DC Power SupplySP-10EXTERNAL Speaker SP-12EXTERNAL Speaker SP-20EXTERNAL SpeakerSpecifications Power OFF then on to exit initial set mode + power onMenu Guide Indication Description No. IndicationMode Display SSB/AM/FM mode CW mode Rtty modeFor 2 sec Display MenuCount on us Declaration Conformity About CETypical amateur radio installation Installation NotesForward clearance, Eirp by frequency band Eirp Clearance heights by frequency bandAbout SP-7 External Speaker Installation Note

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.
Top Page Image Contents