Thank you to "p3rp0ul" for writing in and sharing his neat-looking build of a "Software Defined Toolkit," which consists of two RTL-SDRs, EvilCrow RF, and other RF signal conditioning hardware, all in a ruggedized metal enclosure. He writes:

It’s a compact, field-ready SDR platform that consolidates two RTL-SDR receivers (one acquired via your site), a GPS timing/position module, an LNA with adjustable biasing, and an integrated ESP32-based ISM-band transceiver subsystem into a single rugged enclosure. The project explores how far low-cost SDR hardware can be pushed when carefully packaged, powered, filtered, and shielded as a coherent tool rather than a loose bench setup.

The design focuses on field usability: modular power distribution, fully externalized RF and antenna connectivity, thermal management for the dongles, and internal coax routing optimized with ferrite suppression. The addition of the ESP32 subsystem brings replay, sniffing, jamming, and remote-operation capabilities, extending the utility of RTL-SDR hardware in practical RF reconnaissance and experimentation.

P3rp0ul has shared full details about his build on both Hackaday.io and Hackster.io.