[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)