ad: portazero-1

Balun or No Balun on 80 meter loop?

Discussion in 'Antennas, Feedlines, Towers & Rotors' started by KC8PJS, Nov 14, 2009.

Thread Status:
Not open for further replies.
ad: L-HROutlet
ad: l-rl
ad: Left-3
ad: L-MFJ
ad: HRDLLC-2
ad: L-Geochron
ad: abrind-2
ad: Left-2
ad: MessiPaoloni-1
  1. NL7W

    NL7W Ham Member QRZ Page

    If possible, skip the introduced balun and coaxial losses and run balanced feed-line. That's easy enough... been doing that for years and years at my own station.

    The reason I said this is to show that the use of such a feed method can be put to efficient use with a balanced antenna -- like the high 80 meter loop I built and used to WIN and set a NEW RECORD in a highly competitive U.S. contest -- Sweepstakes. Example: a 1/3 wavelength high loop presents an impedance peak, in relation to "ground," at around 165 ohms or so.

    The 4:1 balun transformation and coax use method does work -- and work well -- if the antenna's design and it's environment present a matching impedance.

    You've have to know what you're up against... ahead of time. I work that way.

    Yet, generalized assumptions can be made, and a case developed around them for such certain "multi-band" antennas -- as in your case.

    Merry Christmas!

    Last edited: Dec 21, 2009
Thread Status:
Not open for further replies.

Share This Page