EIRP (Effective Isotropic Radiated Power) is the total power that a theoretical, perfect omnidirectional antenna (an “isotropic” radiator) would need to emit in all directions to match the
Effective antenna aperture (often called effective area and denoted as Ae) is a measure of how successfully an antenna captures radio frequency (RF) energy from a passing electromagnetic
Live Streaming Trial of ARISS (Cross-Band Repeater on Amateur Radio on International Space Station) Pass, followed by Hambel Belgaum Net from 0708 IST, 7 June 2026 (4:27). Initial
The Loop on Ground (LoG), popularized by KK5JY, is an exceptional receive-only antenna for the lower HF bands (particularly 160m, 80m, and 40m). It seems counterintuitive to lay
Designed in the 1970s by G2BCX, the Slim Jim (Slim J-Integrated Matching) is essentially a vertically polarized, end-fed folded dipole. It is a favorite among amateur radio operators
While both the standard horizontal dipole and the inverted V are half-wave wire antennas, physically dropping the ends to form the “V” shape changes how the RF energy
They are exceptionally common. In fact, if you look at modern commercially manufactured HF Yagi-Uda antennas, the Beta/Hairpin match is arguably the industry standard. For homebrewers building directional
Receiving the QO-100 (Es’hail-2) narrowband downlink is a straightforward project, especially since you can repurpose standard satellite TV hardware. The downlink operates at 10.489 GHz (X-band), so the
Yes, the Vivaldi antenna is absolutely used in amateur radio, though you will primarily find it in microwave, UHF, and wideband SDR (Software Defined Radio) applications rather than
How long-distance flights communicate with Air Traffic Control (ATC) depends entirely on where the aircraft is. Because radio waves have physical limitations, the aviation industry uses a layered
