Tecsun Xiegu G90 Manual de usuario

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Xiegu G90

Panel Layout and Major Function Controls for the Sight Impaired.

Virtually all the buttons and rotary controls in the G90 are dual function. Hence this is a lengthy

document. These instructions refer to firmware build 1.74 (004)

Front Panel Controls

The G90 has a square LCD display centrally located on the front panel. To the left of the display

there are 2 rotary and one push button control. The push button is the Power On/OFF. Press

this button for 1 second to turn the radio ON. You will hear a beep to confirm this. To turn

the radio OFF, do the same thing-no beep confirmation. When the radio is ON, momentarily

pressing the power button disabled the display, saving power consumption. Pressing any key

turns the display back on.

The two rotary controls to the left of the display are Volume and Multifunction. The uppermost

control is Volume. Depressing the volume control, mutes the speaker and sends the audio to

the headphone socket mounted on the left hand side panel (it is the uppermost 3.5mm socket).

There are many functions that can be controlled through the use of this button. Most are

duplicated by other means described in this guide. As most of the functions require a sighted

person to set the parameters, I have only included those functions that are not duplicated

elsewhere.

SQUELCH. Press the Multifunction control for 1 second. Rotate the Tuning knob until SQL

level is displayed. Press the SAVE button (second from the left of the 5 button group below the

display), the display now returns to normal. Momentarily press the Multifunction button until

the filter bandwidth display is shown without the white end traces, then rotate the Multifunction

control to turn on the squelch function and use the Tuning control to set the level.

TUNING CONTROL. The largest rotary knob on the front panel is used to tuning the frequency

to which the transceiver is to be operated. Repeatedly depressing the tuning knob sequences the

frequency step through the following: 10Hz, 100Hz, 1KHz, 10KHz and 100KHz. Depress

the tuning control for 1 second to enter the RIT adjustment. Rotate the control clockwise for

positive values and anticlockwise for negative values. The total range is 500KHz either side of

the centre frequency.

To access TX POWER adjust function use must be made of a 4 button group located on the

right hand edge of the front panel. The first (top) button is Tune, the second is TX power

(marked POW), the third button is Key and the forth button is Lock.

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To put the transceiver in the Tune ready mode, depress the Tune button momentarily. To activate

the auto tuner, depress the Tune button for 1 second.

To adjust the TX power level press the POW button (second down from the top of the group

of 4 buttons on the RHS) once, then rotate the Tuning control to the appropriate level. Power

increments are 1 Watt. Press the TUNE button twice to enter the SWR Threshold setting.

Rotate the Tuning control to select a threshold from 1.8 to 3.6. Press the Tuning control to end

this process. Depress the POW button for more than 1 second, to initiate an SWR scan of the

connected antenna (with the tuner out of circuit). Press the VM button to stop the scan.

Press the KEY button once to set the key speed, and rotate the tuning control for the appropriate

speed. Depress the KEY button twice to access the M/L/R and choose the appropriate setting

by rotating the tuning control. Depress the KEY button three times to access the mode function

and rotate the tuning control to select A or B. Press the KEY button four times to set QSK

ON/OFF using the tuning control. Press the KEY button five times to access the QSK time

and adjust using the tuning control. Press the KEY button six times to set the Ratio and adjust

it using the tuning control.

Press the LOCK button repeatedly to step through the 5 brightness settings for the display. Press

the Lock button for 1 second to lock all controls. Depress the Lock button again for 1 second

to unlock all controls.

To adjust the VOX settings, first press the function button (left hand button of the group of

three to the left top of the display), then press the Volume control once to select VOX ON/

OFF function. Rotate the main tuning dial to toggle between ON and OFF. Press the volume

control twice to select VOX gain and rotate the Volume control to set the level. Press the Volume

control three times to select the anti-VOX and rotate the Volume control to set the level. Press the

Volume control four times to select the VOX delay and rotate the Tuning control to set the level.

After a period of 12 seconds where no changes are made to any VOX settings (or indeed any of

the functions controlled by the FUNC button), the receiver automatically saves the settings and

reverts to receive mode.

To access the FFT Scale and Spectrum reference level, first press the FUNC button then press

the Lock button within 10 seconds. This reveals a spectrum display amplitude scale allowing

selection of auto then 2-10, 10 being the lowest sensitivity. After about 15 seconds of inactivity

access to this function disappears. To make any subsequent changes first press the FUNC

button to turn it OFF, then press it again to turn it ON and then select the lock key to access

the menu. Pressing the Lock key a second time allows access to the display Averaging function

and any value can be set from 1-10.

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Along the horizontal top edge of the front panel there are 4 buttons. The left had 2 buttons are

Mode up and Mode down. Repeatedly pressing either of these buttons steps through the modes

available: AM, LSB, USB, CW, CWR, and NBFM (if this option is fitted) in the desired direction.

The next 2 buttons are frequency band UP and frequency band DOWN. Repeatedly pressing

either button steps the transceiver through the available bands: 1.8Mhz, 3.5Mhz, 5.2Mhz, 7Mhz,

10Mhz, 14Mhz, 18Mhz, 21Mhz, 24Mhz, and 28Mhz in the desired direction.

Located below the LCD display is a horizontal grouping of 5 buttons. These are also dual

function buttons. The most left hand button is preamp and attenuator. Pressing this button

steps through preamp ON, attenuator ON, and neither activated.

The second button from the left is the CMP button. Pressing this button toggles the compressor

ON or OFF. The second function of this button is the digital filter low frequency setting. First

press the Function button (left hand button of the group to the right of the top of the display),

then press the CMP button to set the lower frequency of the digital filter.

The third button is the NB button press this button once and use the Tuning control to toggle

between ON and OFF. Press the NB button twice to select the NB level and use the Tuning

control to adjust (range is 0 to 10). Press the NB button three times to select the NB (blanking

pulse) width and use the Tuning control to select a value from 1 to 10.

The forth button is the AGC button. Press this button to step through S (slow AGC), F (fast

AGC), A (automatic), and no AGC. Settings S and A can result in reduced volume from the

receiver, so don’t panic. Press the AGC button for 1 second to access the RF gain control and

use the Tuning control to change the value 90-100%).

The fifth button is the VFO/Memory function (toggles between the 2). There is no second

function for this button. This allows the user to toggle between the VFO and a frequency

previously stored in memory.

Of the 3 buttons located immediately adjacent to the display, (the first button is the FUNC

button already discussed) the second button from the left is the MW/MC button (memory write

and memory clear functions). There are 63 memory positions available. Pressing the button

activates the memory write function. Ensure memory position 0 is used first. Select a desired

frequency to be entered into memory. Press the MW/MC button, rotate the tuning dial to select

the memory position, then press the MW/MC button again to store.

The third button is the VFO A/B control. Pressing this button, toggles between VFO A and B.

Pressing the function button first allows the user to copy the contents of VFO A into VFO B.

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To exit from any function depress the main tuning knob momentarily.

Side Panel Controls

The left hand side of the transceiver has a panel housing two 3.4mm sockets. The upper socket

is for connecting headphones and the lower socket is for connecting the UBS to 3.5mm

programming adaptor, used to upgrade the firmware to the control head and base unit.

The right hand side of the transceiver has an RJ45 socket for connecting the microphone.

Rear Panel Connections

On the left hand side of the rear panel there is an SO239 antenna socket. To the right of that

there is a group of 3 x 3.5mm sockets. From left to right they are labelled key, COMM and I/Q.

Further to the right hand side there is an 8 pin MiniDIn socket for connecting accessories and

at the far right there is the keyed DC input socket. It is not possible to connect the DC power in

reverse using the power lead supplied, as one pin is round and the other square. Below the DC

input socket there is an earth connection for vehicle bonding etc.

Microphone Controls

The microphone used for the G90 is generic and is obviously used for other (non Xiegu)

transceivers.

The microphone button layout can be divided in half, those that fall above a noticeable groove

that runs horizontally across the face, and those below. Above the groove there are 3 rows each

having 3 columns.

Row 1: The top left hand button marked LOCK has no function. The next button in the top

row marked TUNE activates all tuner functions as previously described in this guide. The third

button in the top row, marked XFC appears to have no function.

Row 2: The left-hand button on the second row is the FREQUENCY UP button and increments

the operating frequency in 100hz steps (or whatever step has been set prior by repeatedly

depressing the Tune control). The second button on the second row is the V/M button and

toggles between the VFO frequency and any programmed memory channel selected. The third

button on the second row is marked MW and appears to have no function.

Row 3: The left hand button is the FREQUENCY DOWN button, the middle button on

this row is marked F1 and controls the preamp and attenuator, toggling between preamp on,

attenuator on and neither on. The third button is marked F2. It is another configurable button

with no apparent function in this firmware build.

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Below the horizontal groove, there are 4 rows each of 4 buttons.

Row 1: Labelled 1, 2, 3, these buttons actually control the operating band. So the left hand

button selects 1.8Mhz, the second button selects 3.5Mhz, the third button selects 7Mhz, the

forth button is the Mode button and steps through all available modes in the sequence listed in

the front panel controls section of this guide.

Row 2: Labelled 4, 5, 6. From left to right, these buttons select 10MHz, 14MHz, 18MHz and

FIL (no apparent function)

Row 3: Labelled 7,8, 9 these buttons select 21MHz, 24MHz, 28 MHz and something called

GENE (no apparent function).

Row 4: Labelled “.”, 0 and CE, are also marked 50MHz, 144MHz and 430MHz (not for this

transceiver). The last button on the RHS is the F-INP ENT and is the frequency input and enter

button. Let’s call it the ENTER button.

To enter a frequency directly from the microphone, press the ENTER button (bottom right hand

corner of the microphone), then the sequence of digits that make up the frequency. For example,

to enter 7045KHz, press ENTER then 7.045 (the decimal point is required) then ENTER. So,

14100 KHz is entered as ENTER 14.100 ENTER.

There may be other functions available now and in future firmware builds, not covered in this

guide.

If you find something that isn’t covered and should be, please let us know at Tecsun Radios

Australia.

By emailing: [email protected]

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