The SMA (Sub miniature type A) connector as we know it was designed in the 60s. So, for many of us, they always been part of the landscape. Its 8mm hexagonal shape, meant to be tightened with a tool, doesn’t offer much grip to fingers. Peoples been cutting/printing contraption that fit over the SMA and […]
S11 (return losses) is another expression for SWR (standing waves ratio) and IMO a better one. It is the ratio of port #1 to port #1, in other words, what comes out of port #1 relative to what you injected in port #1. When you send power to an antenna, some of it is reflected […]
This is an aircraft light I designed a few years back. I decided to make a tutorial for it so others can make and hopefully continue to improve the design. The light is base around CREE’s XM-L or XHP-70 LED. Supply list: CREE X-ML2 or XHP70 mounted on 20mm copper MCPCB. 20x20mm star shaped heat-sink. […]
Thanks to the FPV community’s strong support, we continued R&D work on our ever popular directional CP antenna line on 5.8GHz, namely, the X-air 5.8, X²-air 5.8 and gatling 5.8. The results comes in more available circularity in the 5.8GHz region and even down to 5GHz! Circularity is also further increased at the beam’s edges. […]
This is a follow-up of my article on video signals. I continue on what can affect your FPV experience, mostly what can affect the video quality. Many people neglect the wirings of their FPV ships, as long as everything is connected and no smoke is released, they believe its fine. This is not true…