NEW Xiegu G7250 100W HF/50 MHz SDR Transceiver Leave a comment
We are exited to let share the announcement of a forthcoming Xiegu SDR transceiver with you!
The new Xiegu G7250 is a split-type, separate controller and RF deck, 100 W HF and 50 MHz SDR transceiver built around a direct RF-sampling architecture. It is aimed at radio operators who want flexible installation, touchscreen and physical controls, digital signal-processing tools and a built-in automatic antenna tuner. Read on for a concise look at the features and specifications.
G7250 Key Features
- RF Direct Sampling architecture for excellent performance
- Covers HF and 50 MHz amateur radio bands
- Built-in adjustable digital filters
- Digital noise reduction, Noise Blanker (NB), and Noise Threshold (NTH)
- Built-in voice recorder and playback for calling
- Pre-set CW (Morse code) message calling
- Spectrum and waterfall display
- Built-in automatic antenna tuner
- Remote baseband signal transmission over a network
The Xiegu G7250 combines a separate display and control head with a main radio unit. The two parts can be deployed independently, giving operators more flexibility when arranging a station or adapting the radio to different operating environments.
The transceiver uses a direct RF-sampling platform with dedicated baseband and RF units. It covers 0.5-30 MHz and 50-54 MHz, supports SSB, CW, NFM, AM and DIG modes, and provides up to 100 W output on HF and 90 W on 50 MHz, both specified at ±1 dB.
7-inch touchscreen and physical controls
The detachable control head features a 17.8 cm high-resolution capacitive touchscreen together with full physical controls. Operators can use touch input, buttons or a combination of both. A spectrum scope and waterfall display provide a visual view of activity across the selected frequency range.
Signal processing and operating tools
The G7250 includes adjustable digital filters, digital noise reduction, a noise blanker and a noise-threshold function. Voice recording and playback can be used for calling, while preset CW messages support repeated Morse code calls. The published feature list also includes remote baseband-signal transmission over a network.
The receiver front end uses multi-stage filtering and high-Q inductors to reduce input loss and support signal selectivity. A two-stage, large-dynamic-range preamplifier is specified to improve front-end dynamic range and IP3 performance. Published receiver figures include 0.2 µV sensitivity for SSB, CW and FM, 2 µV for AM, and an MDS of -138 dBm.
Automatic antenna tuner with band memory
A built-in automatic antenna tuner compensates for antenna mismatch across a stated impedance range of 20-150 Ω. The tuner stores settings for each band and reloads them when the operator returns to a previously tuned band. Initial tuning is specified at no more than 10 seconds, while memory tuning is specified at no more than 0.1 seconds.
Xiegu G7250 specifications
| Frequency range | 0.5-30 MHz; 50-54 MHz |
|---|---|
| Operating modes | SSB, CW, NFM, AM, DIG |
| Minimum frequency step | 1 Hz |
| External power supply | 9.0-15.0 V DC |
| Transmit power | HF: 100 W ±1 dB; 50 MHz: 90 W ±1 dB |
| Receive sensitivity | 0.2 µV (SSB/CW/FM); 2 µV (AM) |
| MDS | -138 dBm |
| Operating temperature | 0-55 °C |
| Spurious suppression | ≥55 dB |
| Carrier suppression | ≥40 dB |
| Sideband suppression | ≥50 dB |
| SSB frequency response | 300-2700 Hz (-6 dB) |
| FM deviation | ±5 kHz |
| Microphone impedance | 200 Ω-10 kΩ |
| Tuner matching range | 20-150 Ω |
| Initial tuning time | ≤10 seconds |
| Memory tuning time | ≤0.1 seconds |
| Supported accessory | GY-10 external speaker |
Specifications are subject to change.
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