Dan Koellen AI6XG 

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    Toroid Transformers - How Hot Will It Get?
    Dan Koellen AI6XG
    • Mar 2
    • 11 min

    Toroid Transformers - How Hot Will It Get?

    There are a number of factors in choosing a toroid for a RF transformer. While one may model electrical performance, calculate predicted...
    265 views0 comments
    Trapped 20/30/40 Meter EFHW Antenna
    Dan Koellen AI6XG
    • Oct 4, 2020
    • 8 min

    Trapped 20/30/40 Meter EFHW Antenna

    An End Fed Half Wave (EFHW) antenna for operation on 20, 30 and 40 meters was built for SOTA operation. By using traps, the antenna...
    5,381 views0 comments
    End Fed Half Wave Antennas: More About the Primary Capacitor
    Dan Koellen AI6XG
    • Jun 6, 2020
    • 4 min

    End Fed Half Wave Antennas: More About the Primary Capacitor

    I recently posted a blog claiming that a capacitor in the primary of the matching transformer is not needed for end fed half wave (EFHW)...
    4,294 views1 comment
    End Fed Half Wave Antennas: Is a Primary Capacitor Really Needed?
    Dan Koellen AI6XG
    • May 27, 2020
    • 3 min

    End Fed Half Wave Antennas: Is a Primary Capacitor Really Needed?

    In my research on End Fed Half Wave (EFHW) antennas I found that nearly all have a capacitor in the primary (rig) side of the transformer....
    10,801 views3 comments

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    • HOME

    • Electronics

      • Making and Hacking
      • Vintage Electronics
    • Ham Radio

    • SOTA

      • Antennas
      • W6 Activations
      • W7 Activations
    • ABOUT ME

    • More

      Use tab to navigate through the menu items.
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