Building the Double BiQuad

I don't know the real name for this antenna, but it is two BiQuads end on end. It also seems to be an extremely forgiving design. I made quite a mess of the construction and I'm getting 12dBi gain. I did think I was getting none, but discovered that the antenna is horizontally polarized when held vertically.

Активни елементи броя
Дължина на
Дължина mm
Изместване от рефлектора mm
Дължина на рефлектора mm (Minimum)
Широчина на рефлектора mm (Minimum)
The size of the reflector and its distance from the active element affect the feed impedance. The ARRL handbook says there should be a 1/4 wavelength edge beyond the active element.

Misc Notes

From the front.
From the Back
Активните елементи се разполагат хоризонтално за приемане на вертикална поляризация.