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  • quad standard labs

DJI FPV antennas selection help from QSL.

Hugo Chamberland 07/03/2021 Technology 0 Comment
DJI FPV antennas selection help from QSL.

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.

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SWR and S11: What it means?

Hugo Chamberland 14/01/2019 Technology 0 Comment
SWR and S11: What it means?

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 […]

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RF link budget

Hugo Chamberland 21/09/2015 News 3 Comments
RF link budget

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.

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  • ExpressLRS made it to 100km! 31/01/2023
  • X-air vs. MX-air or why less is more 17/10/2022
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