XIEGU G90 SDR Portable HF Transceiver
Operation Manual
Version: V1.00.0 (Temporary)
Copyright © 2010 2018, Xiegu Communications
Important Reminder
Before operating the equipment, please study this instruction manual carefully and retain it for future reference.
Safety Considerations
⚠️ Do not use equipment during an electrical storm.
☔ Do not expose the unit to moisture.
⚡ Use this device responsibly and observe all local laws and regulations.
⚡ Caution! High RF voltage at antenna connector!
Characteristics
- SDR portable HF Transceiver
- Built-in auto antenna tuner
- Spectrum image and Waterfall image display
- The display unit and the case can be separated.
- High-performance front-end ESC preselector.
Packing List
| Item | Description | Qty |
|---|---|---|
| 1 | G90 case | 1 |
| 2 | Power cable | 1 |
| 3 | Data cable | 1 |
| 4 | Comm cable | 1 |
| 5 | Service card | 1 |
| 6 | Certificate | 1 |
Specifications
1.1 Basic Parameters
| Receive frequency range | 0.5MHz~29.999999MHz |
| Transmit frequency range |
1.8~2.0MHz 3.5~4.0MHz 7.0~7.3MHz 10.1~10.15MHz 14.0~14.35MHz 18.068~18.168MHz 21.0~21.45MHz 24.89~24.99MHz 28.0~29.7MHz |
| Operating mode | SSB/CW/AM |
| Receive sensitivity | 0.25uV @12dB Sinad (PRE:ON) |
| Adjacent channel suppression | 60dB |
| Select (Bandwidth) | SSB 2.4kHz CW 300Hz |
| Dynamic Range | 90dB |
| Frequency stability | ±2ppm (after power on 30 min) |
| Operating voltage range | 11~16V DC |
| Standby current | 750mA @ Max |
| Transmitting current | 8A @ Max |
| RF output | 20W |
| Carrier suppression | ≥40dB |
| Spurious suppression | ≥50dB |
| Sideband suppression | ≥55dB |
| Audio output power | 0.5W @ 4Ω |
| Temperature range | 0℃~55℃ |
| Case size | 120*45*210 mm (non include protrusions; display system and body combination status) |
| Case quality | about 1.85kg |
1.2 ATU Parameters
| Initial tuning time | ≤10s |
| Reentry tuning time | ≤50ms |
| Tuned impedance range | 15Ω~250Ω |
Device Description
2.1 Front Panel
Diagram shows the front panel of the G90 transceiver with numbered controls.
- 1 Volume/headphone knob
- 2 Power button: Press and hold for 2 seconds to power on. Press and hold for 2 seconds to power off.
- 3 Automatic knob: Default: 100kHz position step knob. Short press: custom function.
- 4 Large knob: Frequency stepping, setting parameter.
- 5 Mode switch button
- 6 Band switching button
Other front panel buttons include FUNC, PTT, TUNE, RIT, AF, Po, KEY, LOCK, PRE/ATT, CMP, NB, V/M, A/B.
2.2 Tail Interface Description
Diagram shows the rear panel of the G90 transceiver with numbered ports.
- 7 ANT: Antenna interface, Type: SL16-K.
- 8 KEY: CW key socket.
- 9 COMM: Communication port.
- 10 I/Q: Signal output.
- 11 ACC: Data connection port.
- 12 DC interface: External DC power interface.
- 13 Ground terminal.
Interface Details
1. MIC Interface
Diagram shows a MIC connector with pins labeled PTT, MSVSW, NC, +8V, MIC, GND, MDATA.
2. COMM Port
Diagram shows a 3.5mm jack connector with pins labeled RXD, TXD, GND.
3. Headset
Diagram shows a connector with pins labeled Signal and GND.
Note: Signal
4. ACC Connector
Diagram shows a multi-pin connector with pins labeled GND, +8V, ALC, BAND, DATA, AF_OUT, AF_IN, PTT.
5. CW Key Welding Diagram
Diagram shows a Morse code key with connections labeled 'common' and two terminals for the key.
Note: Morse code (di-da) common
Display Interface Description
Diagram shows the G90's display screen with various indicators and information.
- 1. Current operating mode (e.g., AM)
- 2. Current VFO select (e.g., U-A)
- 3. S table / Power table
- 4. Frequency image (Spectrum Analyzer display)
- 5. Waterfall image
- 6. AGC state
- 7. Current external input voltage value
- 8. Volume
- 9. Current operating frequency
- 10. Other VFO frequency
- 11. Transmitting standing wave (SWR)
Operating Instructions
3.1 Power On/Off
- Power On: From power off state, press and hold the power switch for 2 seconds.
- Power Off: From power on state, press and hold the power switch for 2 seconds.
3.2 Volume Adjustment
Left/right turn the volume knob to increase or decrease the volume.
3.3 Headset Mode Switching
While using the built-in speaker, short press the volume knob to switch to headset mode. A headset icon will appear on the screen.
3.4 Frequency Step Carry Select
- 1kHz bit, 10kHz bit: Short press the main knob to switch the step.
- 100kHz bit: Turn the definition knob to change the current frequency.
3.5 Switching Operation Mode
Short press the MODE “+” or MODE “-” button on the top of the unit to cycle through modes: USB, LSB, CW, AM.
3.6 Switching Current Operation Mode
Short press the BAND “+” or BAND “-” button to cycle through the 10 amateur bands.
3.7 Multifunction Operation
Press the FUNC button; the function pilot lamp will light up, allowing access to secondary functions.
3.8 PRE/ATT Function
- Short press PRE button: Start up preamplifier.
- Press and hold PRE button: Turn on the ATT (attenuator).
3.9 CMP Button Function
Short press CMP button: Turn on voice compressor.
3.10 NB Function
- Short press NB button: Open NB (Noise Blanker) function.
- Short press again: Turn off NB function.
3.11 AGC Function
Short press AGC button: Turn on AGC (Automatic Gain Control) function.
3.12 VM Function
Short press VM button: Switch between VFO mode and channel mode.
3.13 MW/MC Function
Short press MW/MC button: Store channel.
3.14 A/B Function
Short press A/B button: Switch between VFO-A and VFO-B.
3.15 TUNE Function
- Short press TUNE button: Turn on the built-in auto Antenna tuner.
- Press and hold: Start tuning.
3.16 POW Function
Short press the POW button, cooperating with the self-defining knob, to adjust transmitting power.
3.17 KEY Function
Short press KEY button: Enter the function settings related to CW.
3.18 LOCK Function
Short press LOCK button: Lock the controls.
Machine Head and Case Separation Operation Instructions
In power off state, connect the machine head and case with the cable, then operate the interface of the machine head.
Note: In the power-on state, after the machine head is disconnected from the cable, the host will continue to work in the previous working state. After the host connects the machine head again, wait for about 2 seconds, the machine head can resume communication with the host.
