Search results

Query: lesson 7 propagation.
Links: 1  |  Categories: 0
  • Building a Compact and Efficient WSPR Beacon
    No votes
    Operating Modes > Weak Signal
    Building a Compact and Efficient WSPR Beacon — AA7EE
    This project delves into the development of a compact WSPR beacon, building on earlier experiences with weak-signal modes. Inspired by QRP Labs kits and modified open source designs, it integrates a Si5351 frequency generator, GPS module, and class E PA for efficient operation. Extensive optimizations—addressing drift, heat management, and power stability culminated in a portable, serviceable device. The beacon offers insights into propagation while minimizing reliance on main station equipment. Lessons learned highlight the importance of careful component selection and iterative design improvements for robust amateur radio experimentation.