An SDR front end that covers the HF band and interfaces with a PC.

A multi-part article accepted for publishing in PW Magazine (https://pocketmags.com/practical-wireless-magazine)

Part One – The QPD (Published in January 2022)

• All the photos and schematics in the article.
• Information on some of the components used.
• How to get the gerbers or just order the PCB.

Part Two – LW and MW (Published in February 2022)

• All the photos and schematics in the article.
• Information on the potentiometer used.
• Example of the voltage divider calculations.

Part Three – Single band operation (Published in March 2022)

• All the photos and schematics in the article.
• Information on some of the components used.
• How to get the gerbers or just order the PCB.

​Part Four – Fixed operation  (Published in April 2022)

• All the photos and schematics in the article.
• Information on websites and some of the components used.

Part Five – Covering 3-30 MHz (Published in May 2022)

• All the photos and schematics in the article.
• Information on some of the components used.
• How to make the dial using VISIO.
• The ZIP of the VISIO file.

Part Six – Towards an all-band HF receiver Part A (Published in June 2022)

• All the photos and schematics in the article.
• Information on some of the components used.

Part Seven – Towards an all-band HF receiver Part B (Published in July 2022)

• All the photos and schematics in the article.
• Information on some of the components used.
• Schematic of the MCU and DDS.
• Using an optical encoder.
• The ZIP of the VISIO file used to make the Decal.

I have some spare parts / PCB’s – list is here