• You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
  • A Winner has been chosen for the 2026 July 4th Retevis RA89R Giveaway! Click Here to see who won!

homebrew

  1. N

    Project Concept: 3D Multi-Phased Toroidal Hourglass Loop for 10M/11M (27.8 MHz) – Looking for NEC Modeling Help!

    Hey everyone, I’m working on a homebrew antenna project for the 10/11-meter bands (centered around 27.8 MHz) and want to get some feedback on a 3D loop concept I’ve been brainstorming. The goal is to achieve 360-degree, horizontally polarized omnidirectional coverage with a low noise floor, but...
  2. DTB Radio

    End-fed Halfwave Matching Transformer

    I've been puttering around with end-fed half-wave antennas for 40 through 10 meters (concentrating on 40 for now), and have had trouble coming up with a good match-box design. I've tried different ideas from an array of online sources ranging from auto-transformers in various turns ratios to...
    • DTB Radio
    • Thread
    • amateur antenna end-fed end-fed half-wave half-wave ham homebrew homemade matchbox transformer
    • Replies: 25
    • Forum: Home Brew
Top Bottom