Category: Amateur Radio Education

The Physics Behind Amateur Radio

August 12, 2026
Understanding Electromagnetic Waves Here is a useful physics idea for Schaumburg Amateur Radio Club (SARC) members: every on-air contact begins with an electromagnetic wave. Voice, continuous wave (CW) Morse code, and digital signals all depend on radio-frequency (RF) energy traveling from a transmitting antenna to a receiving antenna. Understanding that path makes frequency, wavelength, polarization, … Continue reading "The Physics Behind Amateur Radio"

Digital-Mode WSJT-X 3.0 vs. DECODIUM 4.0 “Shannon”

July 31, 2026
A Practical Digital-Mode Comparison Here is a useful digital-mode experiment for SARC members. WSJT-X 3.0.2 and DECODIUM 4.0 “Shannon” can both place weak-signal activity on your screen, but they approach the operating experience differently. WSJT-X remains the official reference program for FT8 and many related weak-signal modes. DECODIUM builds on that software lineage while adding … Continue reading "Digital-Mode WSJT-X 3.0 vs. DECODIUM 4.0 “Shannon”"