Our friend Troy at Quad Standard Labs made nice video explanation of the different antennas choices for DJI FPV. *Note that the stock V2 antenna does not comes with a green band, they where added not to mix them with V1.
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 […]
In this article, I’m going to explain the RF link «budget». Where is that budget, how it can be calculated and what affect it for better or worse. Your budget is spread over 3 things: Tx power, Rx sensitivity and antennas gains.