Status: Planning · Started: June 2026

Overview

The PJPT20 is my build of a pocket-sized 20 meter SSB QRP transceiver, following Pete Juliano's Shirt Pocket design. This is my first from-scratch homebrew rig; the goals are:

• learn some RF circuit design and build skills
• learn how to work with SMD components
• build a fully functional HF transciever
• package the build up into a satisfying robust unit I can throw into a pack and take on a SOTA activation.
• bonus: build an external RF TX amp to get me a little way past QRP

The build-log posts on the blog will capture the build as it happens; this page holds the current (and at some point final) state of the design: references, open questions, decisions, and eventually schematics, board layouts, and test results.

References

Pete Juliano's publications on the Shirt Pocket transceiver:

• Pete Juliano's site — home of his transceiver designs
• SolderSmoke blog — build discussion and updates

Open Questions

(To be added — transcribing my notes soon.)

Decisions

Answered questions land here, newest first.

(None yet.)

Schematics

(Not yet — will appear as design work starts.)

Board Layouts

(Not yet.)

Build Notes

(Not yet — module-by-module notes will go here, with links to the relevant build-log posts.)

Test Notes

(Not yet — measurements, scope traces, and on-air results.)