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    • Gators1G
      Gators1
      last edited by

      Pretty cool explanation of how phased arrays work without the maths. When he was showing the example at the end, I so wanted to put a square over the return and send an AIM 120.

      DIY sonar scanner (practical experiments)

      alt text

      1 Reply Last reply Reply Quote 1
      • JamJ
        Jam
        last edited by Jam

        My curiosity is indeed tickled, but not to the extent that I would try to follow in this guy’s footsteps.

        "laissez les bons temps rouler!"

        Gators1G 1 Reply Last reply Reply Quote 0
        • Gators1G
          Gators1 @Jam
          last edited by

          @Jam said in The OFFICIAL tech stuff thread:

          My curiosity is indeed tickled, but not to the extent that I would try to follow in this guy’s footsteps.

          You think that’s complicated, this shit looks like it would take months to build.

          SonicSurface: DIY ultrasonic phased array for levitation, haptics, and directive audio

          alt text

          1 Reply Last reply Reply Quote 0
          • TazzT
            Tazz
            last edited by

            Good examples of phase array. Most military aircraft with air defense capability now use phase array radar. I recall seeing these big Pave Paws antennas back in the 80’s

            PAVE PAWS - Wikipedia

            PAVE PAWS - Wikipedia

            GTFO

            Gators1G 1 Reply Last reply Reply Quote 1
            • JamJ
              Jam
              last edited by Jam

              Where I first encountered “phased arrays” is with RF antenna systems.

              According to the document below, the phased array antenna system was first invented in 1905 by Karl F. Braun. He invented a number of other things as well and shared the Nobel Prize with Marconi.

              https://www.qsl.net/va3iul/Antenna/Phased_Array_Antennas/Phased_Array_Antennas.pdf

              "laissez les bons temps rouler!"

              1 Reply Last reply Reply Quote 2
              • Gators1G
                Gators1 @Tazz
                last edited by

                @Tazz said in The OFFICIAL tech stuff thread:

                Good examples of phase array. Most military aircraft with air defense capability now use phase array radar. I recall seeing these big Pave Paws antennas back in the 80’s

                PAVE PAWS - Wikipedia

                PAVE PAWS - Wikipedia

                They got much smaller after the 80s due to some improvement in materials science. I now have one in the bumper of my car and a bigger one in the nose of my jpeg F-18 . The newer AESA radars operate on multiple frequencies that helps it avoid jamming.

                Active electronically scanned array - Wikipedia

                Active electronically scanned array - Wikipedia

                alt text

                TazzT 1 Reply Last reply Reply Quote 1
                • TazzT
                  Tazz @Gators1
                  last edited by

                  @Gators1 SAR radar has been out for a while now (20years?). I’ve seen some images they produce and it’s amazing the quality resolutions they have.

                  This Lynx system can easily show tire tracks on dirt roads. Two passes and they highlight the changes in images. Blue for new targets and Red for old targets that are gone from the second pass.

                  Lynx® Multi-Mode Radar

                  Lynx® Multi-Mode Radar

                  GA-ASI's Lynx Multi-Mode Radar is a high-performance system that provides high-resolution, photographic-quality imagery that can be captured through clouds, rain, dust, smoke and fog.

                  f3b66165-2c65-4d2c-beda-f4ba42b23bbe-image.png

                  GTFO

                  1 Reply Last reply Reply Quote 1
                  • Lob12L
                    Lob12
                    last edited by

                    Pakoon is taking notes and thanks you.

                    [IMG] https://image.ibb.co/nhhF0Q/new_sig_lob12.jpg [/IMG]

                    1 Reply Last reply Reply Quote 3
                    • O
                      oyaji @Jam
                      last edited by

                      @Jam said in The OFFICIAL tech stuff thread:

                      @Hog

                      We are in big trouble if he ever gets a third term.

                      Not necessarily. Sure would require a big change, though. Probably would not happen, but it could.

                      Framers of the constitution must have considered term limits, but left that out. The reign of King FDR caused that to change, but here is no reason the change couldn’t be modded. Just would not be easy.

                      © 2015 - 2025 oyaji

                      1 Reply Last reply Reply Quote 0
                      • Gators1G
                        Gators1
                        last edited by

                        Billions of dollars of tech investment to kill a $300 pickup truck and a towel head.

                        APG-81 AESA Radar for the F-35 JSF

                        alt text

                        1 Reply Last reply Reply Quote 1
                        • B
                          Blanks
                          last edited by Blanks

                          Well if that haji hadn’t of run that stop sign in his little Toyota then maybe he wouldn’t be in pieces!

                          1 Reply Last reply Reply Quote 2
                          • Lob12L
                            Lob12
                            last edited by Lob12

                            They also blew up Lithu’s speedraft for overfishing just before.

                            [IMG] https://image.ibb.co/nhhF0Q/new_sig_lob12.jpg [/IMG]

                            1 Reply Last reply Reply Quote 2
                            • Gators1G
                              Gators1
                              last edited by

                              Why is she shitting on my quantum porn needs?

                              Quantum Internet: No One Needs This

                              alt text

                              PakoonP 1 Reply Last reply Reply Quote 0
                              • PakoonP
                                Pakoon @Gators1
                                last edited by

                                @Gators1 said in The OFFICIAL tech stuff thread:

                                Why is she shitting on my quantum porn needs?

                                Quantum Internet: No One Needs This

                                Does quantum porn mean that the old in-and-out trick can be both in and out at the same time?

                                Right Right Right Alex Delarge GIF

                                ♙♙♙ Michael Waltz added you to the group.

                                JamJ 1 Reply Last reply Reply Quote 2
                                • ?
                                  A Former User
                                  last edited by A Former User

                                  https://www.ghacks.net/2024/01/12/proton-mail-says-that-the-new-outlook-app-for-windows-is-microsofts-new-data-collection-service/

                                  Euro users now get a pop-up allowing them to opt out of the 700+ third parties Microsoft shares your Outlook data with.

                                  1 Reply Last reply Reply Quote 0
                                  • ?
                                    A Former User
                                    last edited by A Former User

                                    Boston Dynamics have retired the hydraulic Atlas that we’re all familiar with. They’re replacing it with an all-electric model:

                                    All New Atlas | Boston Dynamics

                                    I have a feeling this new model is the one that’s going to be pushing us over with sticks and knocking shit out of our hands.

                                    1 Reply Last reply Reply Quote 0
                                    • JamJ
                                      Jam @Pakoon
                                      last edited by

                                      @Pakoon said in The OFFICIAL tech stuff thread:

                                      Right Right Right Alex Delarge GIF

                                      On the off chance that you are a fan of Anthony Burgess . . . . and possibly one who appreciates Joyce.

                                      It’s time for (me) for a re-read of Re-Joyce, reviewed here 14 years ago.

                                      Book Review: "ReJoyce" by Anthony Burgess

                                      Book Review: "ReJoyce" by Anthony Burgess

                                      To paraphrase the opening lines of the "Scylla and Charybdis" episode of Ulysses , this is "a great writer on a great brother writer." ...

                                      “My book does not pretend to scholarship, only to a desire to help the average reader who wants to know Joyce’s work but has been scared off by the professors. The appearance of difficulty is part of Joyce’s big joke; the profundities are always expressed in good round Dublin terms; Joyce’s heroes are humble men.”

                                      –From the Foreword by Anthony Burgess.

                                      "laissez les bons temps rouler!"

                                      1 Reply Last reply Reply Quote 0
                                      • Gators1G
                                        Gators1
                                        last edited by

                                        Sucks they have masks on. I wanted to be able to recognize them next time I see them making my coffee at Starbucks.

                                        Hayden Field  /  Apr 17, 2024  /  Technology

                                        Google workers arrested after nine-hour protest in cloud chief's office

                                        Google workers arrested after nine-hour protest in cloud chief's office

                                        Nine Google workers were arrested Tuesday after sit-in protests, including a nine-hour sit-in at Google Cloud CEO Thomas Kurian's office in Sunnyvale.

                                        alt text

                                        KilemallK 1 Reply Last reply Reply Quote 0
                                        • KilemallK
                                          Kilemall Careful, railroad agent @Gators1
                                          last edited by

                                          @Gators1 said in The OFFICIAL tech stuff thread:

                                          Sucks they have masks on. I wanted to be able to recognize them next time I see them making my coffee at Starbucks.

                                          Hayden Field  /  Apr 17, 2024  /  Technology

                                          Google workers arrested after nine-hour protest in cloud chief's office

                                          Google workers arrested after nine-hour protest in cloud chief's office

                                          Nine Google workers were arrested Tuesday after sit-in protests, including a nine-hour sit-in at Google Cloud CEO Thomas Kurian's office in Sunnyvale.

                                          Where did they think their salaries come from?

                                          Where were they when China killed all those Muslims or crushed Hong Kong?

                                          https://i.imgur.com/hX2CMMZ.jpg

                                          Never go full Lithu-
                                          Twain

                                          No editing is gonna save you now-
                                          Wingmann

                                          http://s3.amazonaws.com/rrpa_photos/72217/DSC_2528.JPG

                                          http://s3.amazonaws.com/rrpa_photos/20416/PTOB 101_resize.jpg

                                          tiggerT 1 Reply Last reply Reply Quote 0
                                          • Gators1G
                                            Gators1
                                            last edited by

                                            There were something like 30 of those idiots fired already.

                                            alt text

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