[TowerTalk] Quad vs. yagi
Wes (N7WS) and Linda
Wed, 07 Feb 2001 10:42:56 -0700
Not taking side here, just an observation
At 11:33 AM 2/7/01 EST, K3BU@aol.com wrote:
> It appears that some of the "new wisdom" is coming from the software
> I just quickly modeled single Quad 1/4 wave/side loop vs. dipole and I
>can get paper advantage of over 2 dB. So no folklore there. (My 3 el. Quad
>beat 7 el. KLM Log Yagi on almost twice the boom on 2m.)
I just used Eznec 3 to compare two models.
1) 10 MHz dipole in free space. AWG 12 copper wire, 31 segments, length +/-
.242628 wavelengths. Zin = 72.8 -j0.9
Gain = 2.08 dBi.
2) 10 MHz full-wave loop in free space. AWG #12 copper wire, 36 wires, 52
segments (full taper both ends) Zin = 126.8 +j0.87.
Gain = 3.19 dBi
Looks like about 1 dB difference to me.
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