LARCset_FLEX_Rx is an experimental HF receiver platform designed for QRP and amateur radio applications. The project combines a flexible RF front-end, Si5351 frequency synthesis, plug-in circuit sections, and through-hole construction for easy experimentation and modification.

The receiver is being developed as a practical learning and development platform for RF electronics enthusiasts interested in HF reception, signal processing, and custom radio architectures. The design allows different RF and audio stages to be tested, replaced, or improved without redesigning the entire board.

Current development includes:

Si5351 local oscillator integration

RF front-end optimization

KA2228 signal level indicator implementation

Through-hole construction for easy assembly and debugging

Flexible interconnection system for future expansion

The goal of the project is to create a reliable and easy-to-build HF receiver platform suitable for experimentation, educational use, and future transceiver development.

For update:

https://www.facebook.com/groups/QrpCuba