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What’s new in 1.7.7b (21 March 2021)

1. Improved AGC algorithm

1.1 Improved the isola�on of close to channels (increased by about 30dB).

1.2 Eliminated the impact noise of the speaker when switching between

receiving and transmi�ng.

2. When connected to GSOC, all sounds in CW mode will be played by the

G90/S speakers. If the modem func�on is turned on, the sounds will be

played via the GSOC.

Here is a list of the most recent improvements:

What’s new in 1.78 (31st December 2021)

This is an update only to the Main Unit - the Display Unit ﬁrmware should have

v 1.77b from March 2021 loaded.

Added the receiving audio Modiﬁca�on ﬁlter to improve the sound quality

and suppress high-frequency noise components.
Improved the AGC algorithm to eliminate the spike noise caused by it.
Improved the granularity of volume adjustment, the volume value of 0-26 is
increased in steps of 1dB, and the volume value of 27-36 are increased in
steps of 2dB.
The updated version numbers should be as follows (check item 10 in the
system menu):
BASE: 1.78
Dec 31 2021,11:59:24
APP: 1.77
Mar 21 2021,15:31:07

WARNING!

Turning the radio on with the USB-Serial cable plugged into either

the 3.5mm socket in the head or main unit, can cause the radio to think you

wish to update the ﬁrmware and you will have a radio that is non-opera�ve
and will have to perform a ﬁrmware update before you can use the radio again!!

Compatible with GD MCU and ST MCU

Note: G90 after the product serial number X04G211600001 must use the

VISIT RADIODDITY.COM FOR DOWNLOADS AND HELP

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Summary of Contents for G90

Page 1: ...HF Transceiver Version 4 2 1 January 2022 G90 Opera on manual XIEGU ...

Page 2: ...Ultra Miniature 24 Bit SDR ...

Page 3: ...t technology from the XIEGU brand and on behalf of Customer Support team we strive to fulﬁll our promise to be er meet your needs every day In order to protect your rights please read the terms on XIEGU Warranty Card carefully and know the Warranty Policy We look forward to improving our products based on customer experience and any ideas would be appreciated If you have any sugges ons for new XIE...

Page 4: ...xplosive or ﬂammable materials Do not operate your transceiver in any area near explosive or ﬂammable materials To avoid electromagne c interference please turn oﬀ your transceiver in any area where no ces instruct you to do so 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Turn oﬀ your transceiver before boarding an aircra any use of a radio must be in accordance with airline regula ons and crew instruc ons Tu...

Page 5: ...ntrast color TFT LCD display 24k bandwidth spectrum waterfall displays Adjustable DSP band ﬁlters CW mode can be as narrow as 50Hz Built in CW Decoder Detachable head unit Built in Antenna SWR scanner Built in Wide range automa c antenna tuner Please read this manual carefully for a be er experience and a full understanding of the opera on of the G90 S The G90S is the version sold in the People s ...

Page 6: ...t Hand Microphone Bu ons Power Source Connec on Func ons of Bu ons Screen Display Icons Opera on Selec on of Working Frequency Range Opera ng Mode Selec on Volume Adjustment Call Sign Editor Se ng Opera onal Frequency Adjustment of RF Gain and Mu ng Level Squelch Opera on Prior to Firmware v 1 75 01 01 02 02 03 04 05 07 08 09 10 11 13 15 16 17 17 18 18 20 20 Index VISIT RADIODDITY COM FOR DOWNLOAD...

Page 7: ...gs SSB Communica on Voice Controlled Transmit VOX Se ng Line Level Input into ACC Connector Automa c Antenna Tuner Standing Wave Scanner SWR Corresponding Loca on of Keys VS Screen Labels Fine Tuning of Received Frequency RIT Line Input and Output Opera on of Line Output Channel Memory Write MW and Clear MC Transmi er Power Se ng 21 21 22 23 23 24 24 25 25 25 26 27 28 28 29 29 30 30 30 31 32 VISIT...

Page 8: ...nu Item 2 Handle F1 Menu Item 3 Handle F2 Menu Item 4 LCD BL Menu Item 5 AUX IN Volum Menu Item 6 AUX OUT Volum Menu Item 7 RCLK Tune Menu Item 8 Band Stacking Mode Menu Item 9 ON OFF Beep Menu Item 10 Version Factory Reset Computer Control Instruc ons Wave Band Voltage Data Firmware Updates 33 34 35 35 35 36 38 39 40 40 40 40 41 41 41 41 41 41 42 42 45 45 VISIT RADIODDITY COM FOR DOWNLOADS AND HE...

Page 9: ...m step Antenna impedance Working temperature Frequency stability Power supply voltage Current consump on Frame size Weight USB LSB CW CWR AM FM 10Hz 50Ω 0 C 50 C 1 5ppm in the 10 60min a er startup 25 C 1ppm hour 10 5 16 5VDC nega ve ground Receive 700mA Max Transmit 6A Max 120 45 210mm W H L excluding protrusions About 1 63kg for main body General Parameters TX VISIT RADIODDITY COM FOR DOWNLOADS ...

Page 10: ... Sideband suppression 60dB Audio output 0 5W 8Ω 10 THD Audio output impedance 4 16Ω Above speciﬁca ons may be changed without no ce VISIT RADIODDITY COM FOR DOWNLOADS AND HELP 02 1 The operator is ALWAYS responsible to ensure he she does not transmit using the radio outside of the amateur alloca on and in the case of an amateur without a full authority licence i e entry level or novice outside of ...

Page 11: ...ransmit audio signal or to control an XPA125B ampliﬁer XPA125B 100W power ampliﬁer including an automa c antenna tuner GSOC external large screen controller G90 H1 Stand with fan G90 H2 Til ng front support legs PAX 100 Radioddity HF ampliﬁer 2 FM mode was only fully available from version 1 75 of the ﬁrmware prior to that ﬁrmware version it was only available in conjunc on with XIEGU s GSOC contr...

Page 12: ...V DC GND Rear ACC socket Left and right connections carry monaural audio Di Da Common Di Da Common If the connector of the CW key is a 6 5mm 2 wire plug please change it to a 3 connector 3 5mm stereo plug according to the wiring method shown in the ﬁgure above Be careful when using 2 core to 3 core adapters because incorrect wiring may put the radio into CW transmission mode all the me VISIT RADIO...

Page 13: ... state yellow green Red indicates the radio is transmi ng When powered oﬀ a momentary press of this bu on will turn the radio on When powered on a long press of this bu on will shut down the radio While star ng up a momentary press of the bu on will turn oﬀ the screen to save electricity By default turning this knob will change the frequency in 100kHz steps A long press of this knob will select cu...

Page 14: ...HELP 06 12 Func on keys The deﬁni on and func ons of these bu ons are detailed in the opera on sec on of this manual Pages 17 18 Pressing these bu ons will switch up or down through the Amateur bands or the Amateur and SW Broadcast bands Transmission is only allowed in the HAM bands whether the radio switches through the SW Broadcast bands is deﬁned through Func on 8 in the System menu 11 Main VFO...

Page 15: ...r upda ng the radio body s ﬁrmware at present 16 I Q signal output port A 3 5mm connector 3 wires used for IQ signal output 17 ACC interface See the interface details on page 04 18 DC power interface DC power input PSU or ba ery The round hole is the nega ve connec on and the square hole is the posi ve connec on Machine Interface Rear Panel VISIT RADIODDITY COM FOR DOWNLOADS AND HELP 07 ...

Page 16: ... is a 3 5mm stereo connector 3 wires used to connect earphones See Page 04 for the wiring details 22 Communica on interface located on the le hand side Used for upda ng the Firmware of head unit and providing a CAT control interface to your computer 20 NOTE point 22 1 Insert the supplied 3 5mm to USB cable into this port for data transfer or CAT control mode communica ons 2 Do not insert the cable...

Page 17: ...rea FIL bu on Filter selec on no ac on on DSP ﬁlter MODE bu on Selec on of the opera ng mode of the radio Func onal indicator light Lights whenever a key is pressed on the microphone Func on bu ons F1 F2 bu ons user deﬁned in the system menu e g preamp split MW bu on Memory channel opera on V M bu on Frequency memory channel switch XFC bu on No function TUNER bu on VISIT RADIODDITY COM FOR DOWNLOA...

Page 18: ...e with the following ﬁgure to avoid a reverse polarity connec on The red wire must be connected with the posi ve pole of power supply and black wire to the nega ve pole of the power supply A Ferrite Choke may be a ached to the power wires to prevent external RF from entering the radio via its power lines and RF interference from inside the radio from radia ng externally via the power cable When in...

Page 19: ...gn Editor Antenna tuning Clear channel entry Copy the current VFO freq to background VFO NB ON NB Level NB Width AGC Fast Slow Auto none Switch between frequency and channel mode Write channel to memory Switch between VFO A and VFO B Turn on oﬀ the antenna tuner in circuit out of circuit Power output se ng POWER SPEED M L R MODE SWR THR Standing wave protec on thresholdse ng Automa c key rate se n...

Page 20: ...alue se ng ranged 1 10 Voice control switch Voice control transmission turnoﬀ delay Voice control gain se ng Hand microphone andspeakerecho suppressionse ng KEY Hang me se ng Se ng of the automa c key dot and dash interval ra o Opera on of a bu on s second func on Press the FUNC bu on the F indicator LED will illuminate then press the required func on s bu on Insert non insert selec on Bu on First...

Page 21: ...nd return you to the main interface Status display area Power supply voltage indica on Volume indica on Receive bandwidth indica on Standing wave display area Receiving level display Spectrogram display area Mode display VFO display area Mul func on indicator Receiving state is meter s Transmission state is power meter Waterfall diagram display area Func on and deﬁni on of display icons pre ampliﬁ...

Page 22: ...of the two VFOs SPL split frequency receiving transmi ng mode is ac ve Loudspeaker mode A short press in of the volume knob switches between earphone and speaker modes All bu ons locked symbol se ngs cannot be changed un l the bu ons are unlocked again While receiving the received signal strength is indicated by the green red line and can be read During transmission the SWR meter displays the stan...

Page 23: ...nc ons and capabili es of the G90 S portable transceiver please read the opera on guide fully to understand the powerful func ons of the G90 S ON OFF key With the screen turned oﬀ the radio s ll works normally Pressing any bu on or turning a knob will turn on the screen again The supply voltage is 13 8V Transceiver start and shutdown 1 To start the transceiver press the bu on for a short period of...

Page 24: ...ontact your dealer so that he can program these in the unit for you Opera on above the maximum voltage given in the speciﬁca ons will seriously damage the radio The displayed voltage may vary 0 3V from the actual value The G90 S is uniquely designed such that lower voltages do not result in signiﬁcantly reduced TX power or RX performance The G90 S receives 0 5 30MHz but is set to only transmit on ...

Page 25: ... adjust the headphone volume Please turn the volume to the minimum setting before using earphones so as to protect your ears Gradually increase the volume to be appropriate as required after the earphones are inserted Headphone mode Speaker mode Volume knob VISIT RADIODDITY COM FOR DOWNLOADS AND HELP 17 Frequency ranges for other bands can be dealer pre set prior to sale in accordance to the regul...

Page 26: ...the character 3 Press the NB bu on underneath BACK on the screen to delete the last character press the VM bu on underneath QUIT on the screen to exit the editor interface press the PRE bu on underneath SAVE on the screen to save and exit the editor interface These LCD screen labels will be close to but not exactly aligned with the buttons below the screen 4 When the radio is re started your calls...

Page 27: ...of the G90 S provides a method to quickly tune across the band The func on knob s default func on and increment is 100khz Hop from the CW to the SSB areas of the band in seconds NOTE This only works if the mul func on knob is set to change frequency If its func on has been changed e g to SQL level you will not be able to tune using the mul func on knob For example press the keys in the following s...

Page 28: ...r you How to adjust the RF gain 1 Apply a long press on the AGC bu on at the bo om of the screen to enable the se ng of RFGAIN 2 Rotate the main tuning knob to adjust the RF gain value 3 A er se ng your RF gain level press the main knob inwards momentarily to exit the RF gain se ng mode SQL se ng You set the Squelch level when you want to mute sta c in between transmissions normally on AM or FM mo...

Page 29: ... is displayed rotate the mul func on knob and where the bandwidth icon is normally displayed on the screen the available values for the selected func on available will be displayed as you turn the knob When you have the value displayed that you wish to have momentarily press the mul func on knob again to keep the value NOTE If you wait too long you will be put into DSP ﬁlter adjustment mode If thi...

Page 30: ...switch between the two in real time As of ﬁrmware version 1 73 with the AGC disabled the receiver will have its RF gain automatically set to 25 so that noise received is not signiﬁcantly increased Automa c Gain Control AGC Select the appropriate AGC me constant for the best receiving experience 1 Momentarily press the AGC bu on at the bo om of the screen to cycle through the three AGC selec ons 2 ...

Page 31: ...en momentarily to enter the NB func on se ng and a corresponding menu will display on the screen where the DSP ﬁlter graphic normally is NOTE You should experiment with the AGC Oﬀ mode only if the received signal is not changing in strength due to fading QSB You must manually control the RF gain level so that you do not have distor on from the incoming signal overloading the receiver Set AGC to oﬀ...

Page 32: ...i on of the required plug wiring 1 Insert CW Key Keyer into the KEY socket on the rear of the main unit 2 Press the MODE bu on to switch to CW or CWR mode 3 Enable the QSK func on by pressing the KEY bu on un l the func on appears also set the appropriate QSK me 4 The radio will key into transmit when the key is pressed 2 Repeated momentary presses of the NB bu on will select the diﬀerent NB func ...

Page 33: ...ency accuracy of the other radio Auto CW decoding is only an addition to using your own ears for decoding It can also be useful when learning Morse code When using automa c CW decoding for best results the bandwidth of the receiving ﬁlter should be set to 300Hz Also adjust the keyer speed on the G90 S to approximately the speed of the incoming CW for the best decoding results The G90 S s CW decode...

Page 34: ...nit to switch between LSB and USB mode 2 Use the second func on a er FUNC bu on has been pressed of the POW bu on for the following se ngs 1 MIC GAIN set the level of the hand microphone audio 2 INPUT select where the audio input comes from the default is MIC and this is required during voice communica ons 3 A momentary press of the POW bu on allows you to set the output power level 1 POWER Set th...

Page 35: ...for SSB communica ons VOX OFF ON VOX func on oﬀ on VOX GAIN voice control gain se ng recommended se ng is 50 ANTI VOX echo suppression se ngs for the hand microphone in conjunc on with the receiver speaker recommended se ng is 50 VOX DLY VOX hang me default is 0 The default hand microphone voice gain value is appropriate in most cases Watch the spectral display when transmi ng and if you see extra...

Page 36: ...er from over temperature under certain challenging opera ng condi ons such as the long 100 duty cycle periods of some digital modes Automa c Antenna Tuner The G90 S has an eﬃcient ATU to help you quickly match many kinds of antennas eﬀec vely 1 Press the TUNE bu on in momentarily to bring the built in antenna tuner into circuit An antenna icon will appear at the top of screen 2 To ini ate an anten...

Page 37: ...ment nearby If this happens try to locate the antenna further away 4 5 A long press of the POW bu on enables the standing wave scanning func on It will scan the SWR of the antenna currently connected Press the bu on below the BW label on the screen momentarily to switch the frequency step of the scan At the bo om of the screen the frequency of the lowest SWR point of the scanned standing wave is i...

Page 38: ...puter so ware package will have a meter showing best input levels Opera on method 1 A long press of the main tuning knob enters the RIT adjustment interface 2 Rotate the main knob le or right to adjust the RIT value The adjustment range is 500Hz When RIT is no longer required reset the RIT value to 0 When using digital communica ons via the ACC port the TX audio drive level should be capable of 20...

Page 39: ...nput signal level will overload the input ampliﬁer resul ng in modula on signal distor on With the ALC set correctly the TX output reading may jump around rapidly under digital modes but average power levels will be in the correct range for a clean and eﬀec ve signal Digital modes are highly eﬃcient and require much less TX power than other modes to make a contact For digital data communica ons th...

Page 40: ...ain tuning knob to switch to the required channel Clear channel memory 1 In channel mode press the FUNC bu on followed by the MW MC bu on The channel number indicator will start to ﬂash in red 2 Rotate the main tuning knob to the channel to be wiped Press the MW MC bu on again to clear the selected channel It is always good to start with reduced TX power if you are unsure of your antenna s condi o...

Page 41: ...y point mode or the bandwidth mode is selected rota ng the Mul func on knob adjusts the values How to adjust the low and high cut oﬀ frequencies of the ﬁlter Press the FUNC bu on momentarily to enable the opera on of alternate bu on func ons Either press the CMP F L or NB F H bu on and rotate the main tuning knob to adjust the lower or upper cut oﬀ frequencies of the ﬁlter Press the CMP F L or NB ...

Page 42: ...o noise ra o In CW mode the digital ﬁlter can be made as narrow as 50Hz but there will be obvious deteriora on of the resul ng audio at such an extremely narrow se ng 300 500 Hz is normally ideal The SCALE reference values gradually increase from 1 to 10 When strong signals are observed scale values need to be lowered When looking at weak signals the SCALE values can be increased Generally bands u...

Page 43: ... as follows Receiving Received audio from the receiver computer audio IN Transmi ng The computer generated audio signal radio TX Audio IN Prepara on The second func on with the FUNC bu on ac vated of the LOCK bu on is as follows SCALE set the reference level se ng AVE set the average value se ng AVE average values gradually increase from 1 to 10 The eﬀect on the display is to smooth out rapid chan...

Page 44: ... radio has been turned on Insert the 8 pin ACC cable provided with the CE 19 into the ACC port at the rear of the G90 S base unit and the other end into the corresponding port on the CE 19 it only has one 8 pin connec on Insert one end of the supplied audio cable into the AFCON socket on the CE 19 The other end plugs into your PC s audio input connector NOTE Some PCs have separate 3 5mm audio out ...

Page 45: ...cable close to the computer if you experience any stray RF ge ng from the radio into the PC For be er performance loop the wire through and then around and through the clip on ferrite choke again then clamp it shut Addi onal wire passes through the ferrite choke improve ﬁltering The USB Serial port should be conﬁgured on your PC as 19200 bps 8data bits no parity 1 stop bit WARNING Turning the radi...

Page 46: ...iving the ampliﬁer Schema c Diagram of Wiring for G90 S Data Communica on Le side of the computer Insert into the communica on port on the head unit XIEGU general data wire Insert the cable to the computer audio Input output port s Insertinto the USB port of the computer 8 core ACC connec ng line The wiring of the 3 5mm sockets are shown on the CE 19 board The port labelled X5105 is also for the G...

Page 47: ... A coax patch lead is required to go from the G90 Ss output port to the ampliﬁers input port user supplied S N 1 2 3 4 5 6 7 8 9 10 Menu item Handle up down Handle F1 Handle F2 LCDBL AUX IN Volum AUX OUT Volum RCLK Tune Band Stack Mode ON OFF Beep Version Func on descrip on Hand microphone up down key func on se ng Hand microphone F1 key func on se ng Hand microphone F2 key func on se ng Screen ba...

Page 48: ... Handle F2 Func on Customize the func on of F2 bu on on the hand microphone Possible op ons Possible op ons PRE ATT SPLT NB COMP AGC PRE ATT SPLT NB COMP AGC Default SPLT Menu Item 4 LCD BL Func on Set the brightness of the backlit backlight Adjustable range 10 100 The larger the percentage the higher the brightness Menu Item 5 AUX IN Volum Func on Set the volume of ACC port input audio signal Adj...

Page 49: ...cking Mode Func on Op ons HAM Band Only display amateur bands FULL Band Display all frequency bands Default HAM Band Menu Item 9 ON OFF Beep Func on Enable disable and the system beep at startup shutdown Op ons Enable Disable Default Enabled Menu Item 10 Version Func on Display the ﬁrmware version of the head and body e g APP V1 XX Head ﬁrmware version No BASE V1 XX Body ﬁrmware version No VISIT R...

Page 50: ... G90 S uses a subset of the standard CiV CAT instruc on set You can remotely control the transceiver based on standard instruc ons or conﬁgure control instruc ons for other so ware Table 1 part 1 3 CMD 0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x0F Sub CMD 0x00 0x01 0xb0 0x00 0x01 DATA see table2 1 see table2 2 see table2 3 see table2 1 see table2 2 see table2 1 see table2 2 Descrip on Set acvive VF...

Page 51: ...key speed Always return 255 in BCD code format Set AF level 0 255 map to 0 100 same below Set SQL level Set CW sidetone frequency Set Tx power Set CW key speed Get SQL level return values are in BCD code format 0 100 map to 0 255 same below Get S Meter Get Power Meter Get SWR Meter 0x11 0x14 0x15 0x16 0x02 0x12 0x22 0x44 0x50 0x02 0x00 0x01 or 0x02 Get PRE switch Get AGC mode Get NB switch Get COM...

Page 52: ...s PTT ATU OFF ATU ON ATU start tuning 0x00 0x01 0x02 0x03 0x00 0x01 0x00 0x01 0x00 0x01 0x00 0x01 0x00 0x01 0x02 0x12 0x16 0x1C 0x22 0x44 0x50 0x00 0x01 D 7 4 D 3 0 D 7 4 D 3 0 D 7 4 D 3 0 D 7 4 D 3 0 D 7 4 D 3 0 10 Hz 1 Hz 1 kHz 100 Hz 100 kHz 10 kHz 10 MHz 1MHz 1GHz 100 MHz Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 BCD frequency Table 2 1 VISIT RADIODDITY COM FOR DOWNLOADS AND HELP 44 ...

Page 53: ...require automa c band switching Firmware Updates Xiegu regularly releases ﬁrmware updates for the G90 S Please go to radioddity com and follow the Support link All informa on for upda ng your G90 S will be there The USB cable for performing updates is included with the G90 S Be sure to install the cable driver from the Radioddity website on your PC before inser ng the USB cable into your PC Wave b...

Page 54: ...ress high frequency noise components Improved the AGC algorithm to eliminate the spike noise caused by it Improved the granularity of volume adjustment the volume value of 0 26 is increased in steps of 1dB and the volume value of 27 36 are increased in steps of 2dB The updated version numbers should be as follows check item 10 in the system menu BASE 1 78 Dec 31 2021 11 59 24 APP 1 77 Mar 21 2021 ...

Page 55: ...7V it may not work normally What s new in 1 7 4 1 Fixed the problem that MIC Gain is rela vely high 2 Added auto FFT scale 3 Added background VFO frequency display func on under channel mode 4 Widened the maximum bandwidth of CW ﬁlter 5 Op mized the ﬁlter bandwidth center frequency point adjustment and CW Tone adjustment range under CW mode If CW Tone is adjusted under CW or CWR mode the range of ...

Page 56: ... Op mized stack and enhanced the stability 11 Op mized the control characteris cs of AGC and ALC 12 Fixed the bug of channel storage func on 13 Fixed the spectrum display bug during emission 14 Fixed the bug of standing wave detec on threshold 15 Fixed the problem of interrupted voice during low power emission Updated version number can be checked in 10th item of system menu It takes about 3s to r...

Page 57: ...diﬁable for use on the US MARS required transmit frequency ranges Your antenna will have a great impact on the quality of your communica ons Many simple wire antennas oﬀer excellent performance for ﬁeld opera ons 7 ACC Band Voltage switching output is op mized solved the issue of wrong voltage for 12m band 8 TS max digit change from 10k to 100k when pushing the main knob 9 RIT func on added Press ...

Page 58: ...XIEGU ...

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