Steve N3SB has alerted constructors to a small collection of documents, photos, test results, and a calibration procedure that his Carroll County Amateur Radio Club (Maryland USA) has been putting together at:
The following link directly to the documents and reports:
- Kit Building Committee Report August 2018 – uBITX Intro
- Kit Building Committee Report September 2018 – uBITX Harmonics and Spurs
- Kit Building Committee Report October 2018 – uBITX Harmonics and Spurs Update
- USB Connector Modification
- Both-sides Headphone Audio
- Fan, Battery, Connector, PA power Mods
- Grounding Modification
- RF power vs Supply Voltage Inspection
- Outboard Relays Design Document
- Minor Heatsink Modification
- Micro-BITX Calibration Instructions
- Reducing AF Input Amplifier Harmonics
- CW Tone Amplitude Reduction
- Calibration Theory
- uBITX Microphone Notes