[amsat-bb] Re: yagi design
gzook at yahoo.com
Sun Mar 22 10:29:47 PDT 2009
For a "bullet proof" and "cookbook" antenna design you cannot beat the quagi. The do not require any special feedline matching or anything else. Basically, build it like the instructions and they work the first time. Go to
for instructions on building one.
--- On Sun, 3/22/09, Bert Audenaert <audbert at gmail.com> wrote:
Hereby my first mail on this BB. I want to start with satellite communication. I already build an eggbeater antenna, but togheter with my TS2000 i receive only very poor signals. To work more comfotable, i want to build two yagi antennas (one for 2m and one for 70cm) with an azimuth/elevation rotor system.
For the 2m version, I took the following design of DK7ZB as a start: http://www.qsl.net/dk7zb/start1.htm -> 144MHz yasis -> 6 El-28-Ohm (2m60). Because I want to tune this antenna to the upper side of the 2m band (I had 145.800MHz as center frequency in mind), I entered the data of this yagi in MMANA GAL, a free NEC program (http://mmhamsoft.amateur-radio.ca/mmana/). After Calculation, i got totally diferent results as on the DK7ZB website.
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