[Moon] Article on antenna feed design for 8N1EME 32m dish

[M. Watanabe]

An article titled 'Design of Primary Feeds for the 32m KDDI Antenna System 
IBA-4
in Cassegrain Configulation', was published in DUBUS 4/2007, authored by
Rasto Galuscak, OM6AA, and others as co-authors.

In this article the possible primary feed designs for this modified 
cassegrain antenna
are assessed, evaluated and finally drawn out for practice.   The key to 
utilize this
antenna for amateurs' three bands, 144, 432 and 1296 MHz, is how you deal 
with
the 2.9m subreflector just in front of the prime focus of the main 
reflector.

Hope you will find this article interesting, and valuable for future 
big-dish project
in any cases.   Great thanks to Rasto OM6AA, other co-authors, and Joe 
Kraft, the
publisher of DUBUS magazine, and other carriered amateurs who gave us 
inspiration
for this project..

In this DUBUS issue, some other interesting articles are found; 
High-Efficiency Feedhorns - continued by W1GHZ and WD5AGO, 2m and 70cm 
Receiver Front-ends
by KD5LV, More about Oblong Antennas by YU7XL, etc., etc.   Enjoy!!


Mike JH1KRC