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After more than two years of in-house discussions, schematic hunting, reverse engineering, circuit revision, prototype development, and beta testing, we are very proud to announce the release and general availability of the Barge Concepts BP-1, our take on the infamous Interfax HP-1.


We realize that we aren't the first people to tackle this project, and we're indebted to the other builders, DIYers, and curious minds that made their HP-1 thoughts, findings, and pictures available on the web. We’d like to show our thanks by giving something back to the community - we're making our schematic of the HP-1 publicly available, as well as a brief history page outlining our design and reverse engineering process.






Large format, for download.


Barge Concepts home - BP-1 home - BP-1 History - email - Mailing List