You only need: Dit/Dah, key out, and a piezo speaker. A repack trims the fat, showing you exactly which components you can omit (no LCD, no encoder). This is critical for embedding the keyer inside a small enclosure like an Altoids tin.
You’re operating 100W and the keyer locks up on transmit. A good repack includes RF mitigation strategies: shielded cables, RC snubbers on the key line, and proper grounding planes. The original schematic does not emphasize this. k3ng keyer schematic repack
If you are looking for specific hardware based on this repack, several kits and projects are widely cited: : A popular kit by DJ0MY . You only need: Dit/Dah, key out, and a piezo speaker
However, the original schematic (usually spread across multiple pages or presented in a dense, single-page layout) can be intimidating for newcomers and even tedious for experienced builders to trace. Enter the – a community-driven effort to redraw and reorganize the keyer’s circuitry into a clearer, more logical format. You’re operating 100W and the keyer locks up on transmit