This condition occurs when tuned circuits, such as radio transmitters and receivers, are aligned to resonate at an identical frequency. Achieving this precise frequency match allows for maximum energy transfer and signal coupling between the circuits. While it is a foundational concept in early wireless communication, engineers typically use terms like resonance or tuning to describe the phenomenon.
Heard on the job
Check the alignment on those LC tanks; we need exact syntony before we power up the main transmitter.
Insider tip
This is a historic term originating from early spark-gap radio days; technicians usually just say the circuits are tuned or locked.