Last Revision: 19 December 2008
Andreas, DJ3JJ, brought me to re-thinking some antenna considerations and with Ron, N4GJV, I had a long discussion about the DL9KR design he uses in his EME antenna consisting of 4 yagies.
I am looking for a design of an antenna for a new 432 MHz EME antenna, which hopefully will consist of an array of 4 or 6 antennas. But the single antenna must work well before making a bay of four antennas or more. Therefore - and that was a lot of work - I put the available data into the EZNEC5+ program. I see that all antennas perform well. The YU7EF 21 Element antenna at the end outperforms all other design by producing very low side- and backlobes making it extremely low temperature.
In earlier times I use the Tonna 21 element yagi and a DL6WU 24 Element. I would like to have the dimensions of those antennas too. I suggest the 21 ele Tonna not being very good regarding sidelobes.
|DJ9BV 22 Element Antenna||This antenna has become very popular.|
|DK7ZB 21 Element Yagi|
|K1FO 22 Element yagi||This antenna was first described
in the ARRL antenna handbook.
It has been used successfully many times
|N4GJV's implementation of DL9KR's antenna design.|
|YU7EF An astonishing design of a 21 element antenna.|