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Operation  

 

VFOA/B can be fully used to set different frequencies and modes

,

so as to 

quickly switch the two frequency points in real time. 
----------------------------------------------------------------------------------------------- 

Automatic Gain Control (AGC) 

Select appropriate AGC control parameters in different work modes to achieve a 

good receiving effect. 
1. Press [AGC] key at the bottom of the screen in a short time, enable/ disable or 

select different AGC modes and circulate them in the following order: 

AGC-

S → AGC

-

F → AGC

-

A → AGC

-- 

AGC-S:  Slow AGC control 

Recommended settings

AM mode: AGC-S 

AGC-F:  Fast AGC control 

 

SSB/CW mode: AGC-F 

AGC-A: Automatic AGC control 

 

AGC--:  AGC disable 

2. When the AGC-A mode is selected, the radio will automatically select the 

appropriate AGC control parameter according to the current work mode. 

 

After AGC is disabled, the receiver will be in the maximum gain state and 

noise received will be significantly increased. 

 

 

20 

Summary of Contents for G90S

Page 1: ...ection and adjustment are no longer problems High performance RF front end SSB CW AM three working modes 1 8 inch high color TFT LCD 24k bandwidth spectrum display waterfall display Software defined n...

Page 2: ...e of working temperature 0 C 50 C Frequency stability 1 5ppm in the 10 60min after startup 25 C 1ppm hour Power supply voltage 10 5 16 5VDC negative electrode grounding Current consumption Receiving 7...

Page 3: ...z 0 35uV 10uV 2 0 27 9999MHz 0 25uV 2uV 28 0 30 0MHz 0 25uV 2uV PRE on ATT off NB off NR off SSB CW AM 10dB S N Mirroring suppression 70dB Midband suppression 60dB Audio output 0 5W 8 10 THD Audio out...

Page 4: ...ad fixing stud 2 nos Hexagon wrench 1 in number Power line 1 in number Warranty card 1 in number Instructions 1 in number Quality certificate 1 in number Optional components CE19 host ACC adapter can...

Page 5: ...nector of the telegraph key is a 6 5mm 2 core plug please change it to a 3 core 3 5mm stereo plug according to the wiring method shown in the figure above and connect the trigger end of the electric k...

Page 6: ...4 Multi function Adjustment Knob By default turning this knob will step at 100kHz Long press this knob to switch to the Select Custom function 5 6 MODE mode switching Mode switching It will switch cyc...

Page 7: ...Panel Keys 12 Function keys The key definitions and functions are detailed in the operation section Page 12 7...

Page 8: ...port It is a 3 5mm interface 3 wires used for IQ signal output 17 ACC interface The interface is an 8 core mini type DIN interface See the interface definition for details See Page 5 for the definitio...

Page 9: ...ires interface used to connect earphones See Page 5 for the wiring method 22 Communication interface located on the left side It is used for hardware updating of head unit and the on line control with...

Page 10: ...one operation indicator light 5 Figure key area Figure keyboard area 6 FIL key Filter selection 7 MODE key Selection of working mode of host 8 Functional indicator light No 9 Function keys F1 F2 key u...

Page 11: ...ply and black line shall be connected with negative pole of power supply EMC magnet ring can be applied on power lines to prevent external disturbance from entering radio via power lines and radio fre...

Page 12: ...ic key rate setting CW Volum Side tone volume setting CW automatic decoding M L R Manual automatic left and right mode switching CW TONE Side tone frequency setting MODE iambic A B mode switching QSK...

Page 13: ...ncy receiving transmitting mode is open loudspeaker mode Short press the volume key to switch to the earphone mode and here displays the earphone icon key lock sign under receiving status S refers to...

Page 14: ...key to turn off the screen display When the screen is turned off the host is still in normal working condition Pressing any key or turning the knob will turn up the screen display Display of Power Vol...

Page 15: ...witched the custom band passes This function can be opened or closed as detailed in Item 8 of the system menu 60m frequency band shall be opened according to regulations of the country or region Frequ...

Page 16: ...ter the text editor 2 The bottom of the screen is the character selection area Rotate the main knob to select the desired character Press the main knob in a short time to select the character 3 Press...

Page 17: ...ncy setting state and cursor will be flickering at the first place on the left of frequency display position Input expected frequency values one by one and press F INP ENT key again to complete the fr...

Page 18: ...audio switch without signal so that the speaker can be muted Operation methods 1 Long press Multi function Adjustment Knob to enter the user defined function menu rotate the main knob to select the S...

Page 19: ...VFOA B Settings G90S transceiver has two built in independent VFOs which can respectively set differ tent frequencies and modes Cooperated with SPL function it can conveniently achieve pilot frequenc...

Page 20: ...me enable disable or select different AGC modes and circulate them in the following order AGC S AGC F AGC A AGC AGC S Slow AGC control Recommended settings AM mode AGC S AGC F Fast AGC control SSB CW...

Page 21: ...can be in the shoot through state which is conducive to strengthen the front end performance of the receiver and reduce the influence of interference signals When the S meter displays that the receive...

Page 22: ...nary times is recommended Voice Compression CMP The voice compression can increase the average power output during the voice communication so that signals can be resonant 1 Press CMP key at the bottom...

Page 23: ...ation about the telegraph text after decoding will appear at the bottom of the screen Since the accuracy of CW automatic decoding is related to the reporting accuracy signal propagation quality and fr...

Page 24: ...y low magnitude on both sides of voice spectral lines displayed on the screen the hand microphone voice gain value can be appropriately adjusted till superfluous spectral lines disappear Voice control...

Page 25: ...used and the internal antenna tuning is started for tuning strong radio frequency interference may be caused to the unit or electronic equipment Standing wave Scanner SWR The G90S host has the antenn...

Page 26: ...utput In the system menu select AUX OUT VOLUM to set the appropriate output volume When the digital communication is conducted and the ACC port is used for audio input it shall be ensured that the vol...

Page 27: ...he VM key on the panel in a short time to enter channel mode 2 Rotate the main knob to switch the current channel Clear the channel memory 1 In channel mode press the combination key FUNC MW MC at thi...

Page 28: ...meters Adjustment of the starting and cutoff frequencies of the filter 1 Press FUNC key in a short time to enable the operation of the second function 2 Respectively press CMP F L key and NB F H key a...

Page 29: ...er the SCALE reference level setting 2 Rotate the main knob to adjust the SCALE value till the display effect is appropriate 3 Press the main knob in a short time save and exit the setting interface T...

Page 30: ...ger The yellow exclamation point indicates that the equipment installation is abnormal A set of CE 19 expansion card optional Several EMC magnetic rings self provided Connection steps 1 Insert the 3 5...

Page 31: ...put signal terminal of the radio The audio cable is connected as follows AF_OUT Audio input accessing to the computer AF_IN Audio output accessing to the computer 8 core ACC connecting line Insert int...

Page 32: ...XPA125B Moreover the ALC control will be built between two machines When the G90S output power exceeds the power limit of the XPA125B the AACL control will automatically decrease the output power of t...

Page 33: ...key function setting 3 Handle F2 Hand microphone F2 key function setting 4 LCDBL Screen backlight brightness setting 5 AUX IN Volum ACC port input audio volume setting 6 AUX OUT Volum ACC port output...

Page 34: ...alue PRE ATT SPLT NB COMP AGC Default PRE ATT Menu item 3 Handle F2 Function Customize the function of F2 key on multi purpose hand microphone Optional value PRE ATT SPLT NB COMP AGC Default SPLT Menu...

Page 35: ...you think that signal tone you hear is 20Hz above the correct frequency set this item at 20Hz Menu item 8 Band Stack Mode Function Set band stack During the switch of frequency band enable cancel the...

Page 36: ...function enables the restoration of factory settings Operation methods 1 Hold the FNUC key to start up and enter the restoration of factory settings 2 Press PRE key to confirm the implementation Pres...

Page 37: ...TERFACE V REFERENCE MANUAL Wave Band Voltage Data The ACC socket of the BAND terminal of G90S outputs the band voltage of each frequency band This band voltage is associated with the current frequency...

Page 38: ...Copyright Statement All Rights Reserved 2019 Chongqing Xiegu Technology Co Ltd reserves all rights of the manual All parts of the manual shall not be copied without permission 1010160204 C 38...

Page 39: ...an radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interferen...

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