• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
Part15

Part15

License Free, legal, low-power radio broadcasting

  • About Us
  • Forums
  • Resources
  • Members
  • Contact Us
  • Log In

Lead In Wire

November 10, 2010 by Carl Blare

It is my guess that a wire antenna should be “end fed,” meaning that the RF lead-in wire coming from the transmitter should feed the 3-meter antenna wire from either the bottom end or the top end.

It is my guess that a wire antenna should be “end fed,” meaning that the RF lead-in wire coming from the transmitter should feed the 3-meter antenna wire from either the bottom end or the top end.

But WHAT IF a 3-meter wire antenna is CENTER-FED, so that the signal would be injected right in the middle of the antenna instead of the end.

What affect/effect would this have on the resulting signal?

Filed Under: Uncategorized

About Carl Blare

Ambassador of Recreational Radio, owner operator of KDX Worldround Radio, webmaster for kdxradio.com, host of The Blare Blog.

Reader Interactions

Comments

  1. radio8z says

    November 10, 2010 at 5:39 pm

    Center fed
    Usually center fed antennas are dipoles. When center fed, the currents in both elements flow in the same direction so their radiated fields add.

    A single conductor center fed will have the current in each half flowing in opposite directions causing the radiated fields to cancel. The radiation will then be from the feed line.

    Neil

    • wdcx says

      November 12, 2010 at 3:02 pm

      Now you could off-center feed
      Now you could off-center feed and have a micro Windom. 🙂

Primary Sidebar

Online Members

 No online members at the moment

Recent Posts

  • RichPowers

    Ultra long range Part 15 broadcasting (to space)

    While car makers appear to be opting for the licenced s...

    By RichPowers , 1 day ago

  • Mark

    Here's a look at why we do processing and what each function does.

    Shows for FM but applies to AM also.

    By Mark , 5 days ago

  • Mark

    RE: Early 80s Realty Radio' AM transmitters

    I don't think the audio quality would be that good on t...

    By Mark , 2 weeks ago

  • RichPowers

    RE: Early 80s Realty Radio' AM transmitters

    I was very tempted to buy them both, they were dirt che...

    By RichPowers , 2 weeks ago

  • RichPowers

    RE: Part 15 Too Restrictive for Automakers

    @mark I had to pause when you mentioned "15 minute citi...

    By RichPowers , 2 weeks ago

Recent Topics

  • Mark

    Here's a look at why we do processing and what each function does.

    By Mark 5 days ago

  • RichPowers

    Part 15 Too Restrictive for Automakers

    By RichPowers 2 weeks ago

  • RichPowers

    From Virtue to Vice - Music Morality

    By RichPowers 3 weeks ago

  • RichPowers

    affordable DAC Impressive Versatility “audiophile quality” Promising Big performance at small price

    By RichPowers 3 weeks ago

  • RichPowers

    New Canadian Resident?

    By RichPowers 3 weeks ago

Topic Tags

  • Carl Blare3
  • KDX RADIO3
  • WINDOZE3
  • Transmitter2
  • Radio Phvern2
  • station upgrade2
  • archive.org2
  • playlist2
  • Zara Radio2
  • Carrier Current1
View all tags (74)

Copyright © 2026 · Part15.org · Log in