4 Elements Yagi -Amateur band for 4H1PQG

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  • Опубликовано: 8 сен 2024
  • 4 Elements yagi Amateur band for 4H1PQG centered @144Mhz, 140-150Mhz bandwidth.

Комментарии • 14

  • @HBO_92
    @HBO_92 Год назад +1

    Nice Ephraim!

  • @donseto5125
    @donseto5125 Год назад

    Thank you sir! 73!

  • @johnemmons9087
    @johnemmons9087 Год назад +1

    Just found your channel and website today. GREAT information! And thank you so much for putting real plans for building antennas!
    I have a question :
    I like both of your 2m / 70cm Yagis. How much more gain does the larger one have over the smaller? I like the smaller for obvious reasons but gain is more important for me. If it’s not a very big difference, I will build the smaller!
    Another question:
    Do you have any good fox hunting designs?
    Thank you for your hard work.
    God Bless you.

    • @EphraimGariguez
      @EphraimGariguez  Год назад +1

      Thanks for looking 3x5 yagi is 7.25dBi on VHF and 10dBi on UHF, 2x4 yagi is 6dBi on VHF and 8dBi on UHF, the 2 elements VHF side on 2x4 yagi will work as a good fox hunting antenna - take and build the VHF side and you're good to go.

    • @johnemmons9087
      @johnemmons9087 Год назад +1

      @@EphraimGariguez thank you for answering so quickly!
      Another question....
      Can I change the dimensions of the materials? For example using 3/4”x3/4” aluminum for the beam and using aluminum arrow shafts for the elements? Does it effect anything? Thank you!

    • @EphraimGariguez
      @EphraimGariguez  Год назад +1

      @@johnemmons9087 changing the materials will not cause much as long as the geometry of the antenna remains (i.e elements length and spacing) however you will need to improvised on your construction technique so the end results may not be exact but of course still a working antenna so good luck with your build and enjoy.

  • @johnemmons9087
    @johnemmons9087 Год назад

    Hello again. I have a couple more questions. Thank you in advance!
    I’m building your 2x4 Yagi. It looks like a great antenna!
    Went through your entire website and couldn’t find the lengths of the gama match tubes for vhf nor uhf. I did find lengths for other antennas being 4.5, 16.51, and 19.05 cm. What are the lengths used in the 2x4?
    Also does it matter the size of shorting strap? I was thinking of machining it from a 1/2”x 3/4” piece of aluminum.
    Your website and you tube channel are incredibly informational and helpful! Thank you for all your hard work!

    • @EphraimGariguez
      @EphraimGariguez  Год назад +1

      this is the gamma match for the dualband dw1zws.com/site/wp-content/uploads/2018/11/gamma-match-dualband3x5.jpg however I recommend mounting it with a bracket so your final construction maybe different the separation between the gamma match and radiating element is always 2.54cm on my builds - the sample here is for the dual band side by side mounting not the cross 2x4 but the length of the gamma tube remains the same. I recommend to build it using 3/8" elements as you can directly use the center conductor of an RG8 coax for the gamma insert, or in my case I'm using either #12AWG or #10AWG solid wire depending on the availability of supplies it works well with me.
      dw1zws.com/site/wp-content/uploads/2018/11/gamma-match-dualband3x5.jpg

    • @johnemmons9087
      @johnemmons9087 Год назад

      @@EphraimGariguez thank you so much for taking all your time helping me. I will send you prayers from God the Father! Thank You!

  • @papa8293
    @papa8293 Год назад +1

    nice, please link to the plans

  • @chuckkie9159
    @chuckkie9159 Год назад +1

    sir, ok ba yan sa 100 - 200 watts?