Original QST Article proof Corrections: There is a typo in Table 1. The RA8875 costs $35, not $5. There is a typo in Figure 2. The 33K resistor should be 330K. Also in Figure 2, sometimes pin A0 is labeled ADC. Download current stable HamClock release source code as zip or tgz. Revision history: Version 4.06: 2024-08-03 change: longer POTA/SOTA watch lists and ADIF file name fix: better error mess