2 layers20.8 × 14.2 mm

Open-source boards designed in KiCad by mfhepp on GitHub, from 3 repositories. A board’s address here is its repository’s there.


mfhepp/gobox-power
A 6-9-12V DC-DC boost converter for QRP rigs from 4 NiMH cells (or 2S LiPo with minor mods), e.g. Mountain Topper MTR-3B and MTR-5B.

mfhepp/gobox-audio
A small PCB with a LM386-based audio amplifier for a control monitor, and a zero-beat indicator for QRP rigs, like the Mountain Topper MTR-3B and MTR-5B.