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13 Good

About eco32

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    Advanced Member
  1. Solution rarely used, reduces sidelobs, separates from interfering signals, should not affect VSWR, may narrow main beam. Do you use or have seen this?
  2. @Admin {,,,this construction is a bit wrong, mcNeill doesn't really do good things...!!!} McNeil, He performs titanic antsy work in making phantoms, but do not fully understand it, for example, phase shifters are called load coil, and so on and so on... {,,,on this forum there is such a dipole in the correct construction...!!!!} HAMs do not know it, I have not yet seen any HAMs construction with the use of this type of matcher/balun. Most popular is this one: This is material for a separate topic, LTE/Wifi antennas rarely have a balun.
  3. Thank You, colecting materials ongoing.
  4. @Admin This is amazing, this ring makes no obfuscation effect. The feed on the 1296MHz is usually large, and here it works as in an ofset antenna. I have not seen such a design before. BTW, Are You doing EME?
  5. @Admin in my opinion, this antenna can be more efficient than a biquad, I would be happy to make such an antenna for 1296Mhz if you are willing to simulate and provide dimensions. I will compare with biquod made in same technic.
  6. Only few types of the antennas dont need a impedance adapters. The others will have a high loss. Do they have good results without this? The results will be adequate for the price.
  7. Yagi

    Need more than 17dBi? You have to build antenna 10*Lambda boom, You nedd 20dBi than yo have to use Yagi with 20*lambda boom lenght, or try grid or parabola 10*lambda radius will give aprox. 30dBi
  8. Yagi

    @Jeriyant: What is the impedance and did you use a balun?
  9. https://www.youtube.com/@mul_onochannel1569/videos
  10. No one did it with biquad
  11. once again: Dipole has oposit phase on the arms, biquad has same phase on the both ends, trick with phase shiter will not work here.
  12. Simple in mtlab:
  13. The manufacturer touts that the antenna does not have sidelobes, I wonder whether conical corrugated horn or piramydal corrugatted horn is better, We have only this for 5180 - 6775MHz 24dBi: