Specification
58
What type of power connector does
the G90 use?
EL-2P
Specification
59
What input voltage range does the
G90 accept?
10.5~16.5V
Specification
60
What is the rating of the fuse in the
power cord?
10A fuse
Specification
61
Can the G90 be powered with 4
Lithium batteries which are 16.8V in
total?
Yes, but there is a risk of overvoltage. 16.8V input voltage is not recommended.
Specification
62
How do I connect the G90 to a ground
wire?
There is a ground terminal connection at the rear panel, which is for the ground wire
connection. Good grounding can help improve the performance of the equipment and
enhance its anti-interference ability.
Specification
63
What is the maximum emission
current of G90? What kind of power
supply would be suitable?
The maximum emission current could be up to 5.5A, when under 13.8V DC power, and
the emission current in full power transmitting can't be higher than 5.3A. A power supply
with 6A or above output power would be recommended.
Specification
64
What is the minimum input voltage
that allows the G90 to transmit at full
power?
The G90 can transmit at full power with input voltages at or above 11.5V. Input voltages
above 13.8V will not improve the output power, as the APC unit in the radio will regulate
the power automatically.
Specification
65
How do I confirm that the output
power of the device is normal?
Select CW mode, press the key to start transmission, and observe the output power
reading displayed on the screen.
You can also use an external power meter to help. Do not use SSB mode to check as it will
be affected by the input volume, which may cause a large change in output power.
Specification
66
Does the G90 have reverse polarity
protection?
The reverse polarity protection consists of a fuse in the power cord and an internal
circuit. When the radio is accidentally miswired, the fuse will blow, and the internal
protection circuit will take action to prevent further damage. To repair it, you just need to
just replace the fuse and repair the protection unit inside the radio. Generally, it will not
cause more serious damage.
Specification
67
What is the receive sensitivity of the
G90?
0.25uV @ 10dB S/N
Specification
68
Can the G90 connect to a PC and
show a spectrum?
Yes, you can connect the I/Q signal to your PC's sound card, and use appropriate SDR
software to see a spectrum. (Depends on your sound card's capability.)
Specification
69
Does the G90 have a spectrum
display?
Yes, it provides both a spectrum and waterfall display.
Specification
70
Can the G90 show the SWR (Standing
Wave Ratio) of my antenna setup?
Yes. There's a standing wave meter on the right side of the screen, and the current
standing wave ratio will be displayed when transmitting.
Specification
71
Is the transmit power adjustable on
the G90?
Yes, continuously adjustable from 1 ~ 20W in steps of 1W.
Version
72
How do I factory reset the G90?
Turn off the G90, hold the FUNC button, and turn on the machine, then your radio will be
reset. (this reset function was added in firmware version V1.73)
Version
73
How do I update the G90 firmware?
When updating the firmware, the head and body need to be updated at the same time,
and the firmware version number must be the same for both. For detailed operation,
please refer to the Firmware Upgrade Instructions:
https://xiegu.s3.amazonaws.com/G90%20FW%20Update%20Instructions_20200313.pdf
Version
74
What happens if the firmware update
process fails or is cut off prematurely?
Repeat the update procedure. The device will not be bricked.
Version
75
How do I check the current firmware
version number?
Item #7 in the radio menu shows the firmware version
Version
76
What are the differences between the
G90 and G90S?
The hardware in the G90 and G90S is identical. The G90S is the original model for the
Chinese market, with the G90 being the model for sales overseas. The G90 is provided
with a different set of operating frequencies based on the sales region.
