Ever since I built a receiver more than 40 years ago to pick up RF frequencies around 15 kHz (it was probably still Kc/s—kilocycles per second—back then) being used to transmit messages to submarines, ...

Abstract: Low radio frequency experiments performed on Earth are contaminated by both ionospheric effects and radio frequency interference (RFI) from Earth-based sources. The lunar farside provides a ...

Is there a faster way to determine a frequency? It turns out there is. An accurate analog clock tick-tick-ticks with a constant precision and well known frequency: one tick per second. The longer you ...

Numerous test-and-measurement applications require a high-frequency magnetic field. Oftentimes, high field strength is needed. Examples of such applications include bio-medicine research on the effect ...