[HN Gopher] Inspired by aircraft IFF interrogator antennas, I de... ___________________________________________________________________ Inspired by aircraft IFF interrogator antennas, I decided to build my own array Author : luu Score : 36 points Date : 2023-11-27 21:57 UTC (1 days ago) (HTM) web link (techhub.social) (TXT) w3m dump (techhub.social) | giantg2 wrote: | Is there an explaination of what's going on in the video, or is | it really just a two antena array with the fields interacting | with each other and the panel? | jaywalk wrote: | Yeah, I think that's all there is here. | dylan604 wrote: | I had never looked into how IFF worked until this post left me | with way more questions than answers. Like WTF is this even | doing? I had very much incorrectly assumed IFF was a coded | challenge-response setup, so this antenna array was confusing me. | After reading the WikiP[0] article on it, it made a lot more | sense about what is happening when the hand held device is used | near the receiving antennas. | | Yesterday, there was an article on signal reflections that spun | me down a rabbit hole on wave reflections, 1/4 wave attenuators, | dampeners, etc. Today, it's tuned antennas and playing with | transceivers. Thanks to HN for helping fill my "learn 1 new thing | a day" | | [0] https://en.wikipedia.org/wiki/Identification_friend_or_foe | mysterydip wrote: | radartutorial is a great site to learn about this stuff IMHO. | Here's their IFF section: | https://www.radartutorial.eu/13.ssr/!sr01.en.html ___________________________________________________________________ (page generated 2023-11-28 23:00 UTC)