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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

antennas

  1. K

    27MHz carrier signal using a oscillator chip or with few transistors alone

    I am trying to generate a 27MHz carrier signal to transmit it through a loop antenna, I referred many circuits couldn't able to find the one I need. can anyone guide me on generating it using a few simple transistors or using an oscillator chip with a 3v cell battery? The thing is my design is...
  2. F

    5/8 Wavelength Antenna Top Loading

    When I was younger, I had a CB radio with a 5/8 wave base station antenna. The antenna had a capacitance hat on the top and a tapped coil on the bottom. I Know what the tapped coil is for, impedance matching. I'm not so sure about the capacitance hat. I've been reading up on top loading with...
  3. F

    3/4 Wavelength Antenna

    I don't want to build one but I was just wondering: Is a 3/4 wavelength antenna self resonant?

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