40-meter HomeBrew SDR Receiver Kitset

Neville, ZL2BNE, a skilled homebrew radio builder, has developed a Software-Defined Radio (SDR) kit designed for the 40-meter band. This kit offers enthusiasts an opportunity to build and experiment with SDR technology tailored for 40 meters.

Kit Features:

  • Complete Components: The kit includes all necessary cables and connectors, such as an audio cable, 9V battery connector, and a BNC to 3.5mm adapter.

  • Computer Integration: The SDR’s audio output connects to your computer, leveraging software like HDSDR to process signals.

  • Design Origin: Originally published in the May/June 2024 issue of Break-In magazine, the receiver features quadrature outputs compatible with various software supporting I & Q inputs.

Resources for Builders:

The following links detail the background and theory of operation, schematics, gerbers, and build guidelines.

  1. 1. Break-In May-June 2024
  2. A pic of a finished V3 SDR Built-up
  3. A pic of HDSDR in action  SDR at work
  4. 4. 40M SDR V3 Schematic
  5. 5. Photo Of Components
  6.  Rendering of board
  7. 7. 40M SDR I-BOM
  8. 8. 40M SDR Build Notes
  9. 9. 40M SDR Winding The Toroidal Transformer
  10. 10. 40M SDR Ver3a Gerbers