Finding a Ham Radio Frequency | Ham Radio Prep

In ham radio, frequency stability and thermal drift are things you really notice once you spend time on the air, especially on SSB, CW, or digital modes. Simply put, thermal drift happens because electronic components change value as they heat up or cool down, and when that happens inside an oscillator, the frequency slowly moves. Older analog VFOs make this very obvious: you turn the rig on, start calling CQ, and after a few minutes you’re no longer exactly where you started. Crystals are much