Xiegu G90
HF Mobile Radio – 20W SSB CW – 5W AM – QRP 24-Bit SDR – Auto Antenna Tuner – Remote Head – Color Display with Waterfall – Multi-Band – 160 to 10 Meter Bands – 0.5Mhz to 30Mhz
https://www.radioddity.com/products/xiegu-g90-hf-transceiver
https://www.radioddity.com/pages/xiegu-download
https://www.radioddity.com/blogs/all/how-to-update-xiegu-g90-firmware
Community Support Group:
https://xiegug90.groups.io/g/main
Manufacturer Product Info:
- Detachable Display Unit —— The display unit and the radio body can be separated. This allows you to place the head remotely. What’s more, the radio is very compact.
- Wide Range Auto Antenna Tuner —— Unlike other QRP radios, the G90 has a wide-range internal automatic antenna tuner so you can load up your favorite field antenna!
- Beautiful Color LCD Screen —— All vital operating information is clearly visible in daylight conditions. 48KHZ wide spectrum display with waterfall gives you excellent awareness of the signal conditions around you.
- Easy to Use —— Intelligently designed, the most commonly used functions are on hardware buttons. Next you can use the Quick Menu function to access often-used functions.
- Firmware Updates——Firmware updates are provided to enhance the functions of the radio – at no cost. You can easily update the firmware yourself.
Manufacturer Features:
Features
- Up to 20W of RF power
- High-performance RF front end giving superb selectivity
- Modes provided are USB/LSB/CW/CWR/AM/NFM
- 1.8-inch high brightness color TFT LCD screen
- ±24k bandwidth fast-scan spectrum display with waterfall
- Adjustable DSP band filters (CW mode can be as narrow as 50Hz)
- Detachable front panel/display head unit
- Built-in CW Decoder
- Built-in Antenna SWR scanner
- Built-in wide-range automatic antenna tuner
- Built-in mediumwave (AM broadcast) high-pass filter
- I/Q output for interfacing with a PC or adapter
NOTE
- FM mode is available.
- It’s apparently Normal that the G90 overheats if used for a long time without the fan holder strap bracket upgrade, especially if in direct sunlight on a hot summer day.
- If you want to run the power of the G90 at 20W, then the manufacturer requires the supply voltage to be in in the 13.8V-15V range otherwise output cannot be guaranteed.
Manufacturer Specs:
| # General Specifications | |
|---|---|
| Frequency receive | 0.5MHz-30MHz |
| Frequency transmit: | 1.8-2.0MHz | 3.5-4.0MHz 5.330.5-5.405MHz | 7.0-7.3MHz 10.1-10.15MHz | 14.0-14.35MHz 18.068-18.168MHz | 21.0-21.450MHz 24.89-24.99MHz | 28.0-29.7MHz |
| Operating modes: | USB/LSB/CW/CWR/AM/FM |
| Minimum step: | 10Hz |
| Antenna impedance: | 50Ω |
| 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 ground (must be 13.8-15V if need 20W) |
| Current consumption: | Receive: 700mA@ Max Transmit: 6A@ Max |
| Antenna socket: | SL16-K type, impedance 50Ω |
| Case size (mm): | 4.75 x 1.75 x 8.25inch 12 x4.5 x21cm (case only) 5.5 x 2 x 9.8inch 14 x 5.2 x 25cm (with handles) |
| Weight: | About 3.6lb | 1.63kg (main body) |
| # Transmitter | |
|---|---|
| RF output power: (@ 13.8VDC) | 20W(SSB/CW/FM/AM) |
| Spurious suppression: | ≥50dB |
| Carrier suppression: | ≥40dB |
| Microphone impedance: | 200Ω ~10kΩ (600Ω in general) |
| # Receiver | |
|---|---|
| Circuit type: | Zero-IF (ZIF) direct conversion SDR |
| Neighboring channel suppression: | ≥60dB |
| Sideband suppression: | ≥60dB |
| Mirroring suppression: | 70dB |
| Sideband suppression: | 60dB |
| Audio output: | 0.5W (8Ω, ≤10% THD) |
| Audio output impedance: | 4~16Ω |
Known Bugs:
The Problem Diode shown above is especially susceptible to accidental damage when assembling and disassembling the Xiegu G90 Transceiver. As you can see in the picture above the large white arc is the speaker outline and this diode is taller and larger than the surrounding components. If this component happens to become damaged or completely broken off it could possibly and unintentionally allow the radio to transmit on all the bands instead of the ham bands which could then be illegal to use illegally. The replacement part is any generic 1N4148W style surface mount fast switching diode with the white stripe on the side towards the edge of the circuit board away from the large chip. Use care when attempting to remove a suspected faulty part as there is a larger ground plane on the striped side that may take a few seconds to heat up with a soldering iron. You’ll know you’ve replaced the part correctly when you get a “TX Error” again when attempting to transmit outside your firmware’s country’s ham bands.