将WiFi 7路由器改装成320Msps软件定义无线电接收器

开发者成功将Gemtek W1700K WiFi 7路由器改装为宽带软件定义无线电接收器。1该改装方案利用路由器内置的MediaTek MT7996芯片捕获14位IQ数据，支持高达320Msps的采样率。1通过10GbE接口以9.75Gbit/s的流速将数据实时传输至Linux主机，用于频谱和瀑布图分析。1

该项目采用完全自主开发的固件，无需依赖MediaTek厂商代码。1接收器覆盖2.4GHz和5GHz全频段扫描能力，在纯接收模式下运行，已禁用发射路径。1系统能够执行262,144点快速傅里叶变换，每秒更新频谱100次。1该项目以MIT、GPL-2.0和BSD-3-Clause等开源许可证发布。1

A developer has repurposed the Gemtek W1700K WiFi 7 router as a wideband software-defined radio receiver by leveraging its MediaTek MT7996 chipset to capture 14-bit IQ data at sampling rates up to 320 megasamples per second 1. The custom firmware, developed entirely independently without relying on MediaTek vendor code, transmits the captured data to a Linux host over 10 Gigabit Ethernet at a throughput of 9.75 gigabits per second for real-time spectral and waterfall analysis 1. The implementation supports full-band scanning across both the 2.4GHz and 5GHz frequency ranges while operating in receive-only mode with transmission paths disabled 1.

The project achieves sophisticated signal processing capabilities, performing 262,144-point Fast Fourier Transform operations with spectral updates occurring 100 times per second 1. The complete firmware and accompanying tools are released under open-source licensing including MIT, GPL-2.0, and BSD-3-Clause terms 1, making the technical approach accessible to the broader developer community interested in software-defined radio applications.