[Moon-net] 13cm RW3BP

[Sergei rw3bp]

Hi all,

There are some details of my rig on 13 cm.

http://www.vhfdx.ru/component/option,com_zoom/Itemid,99/catid,374/PageNo,1/

Diameter of output section of the feed is the same as for usual IMU-horn. So 
it is optimum for 0.55 f/D. To reduce spillover I added a beard to my 2.4m 
offset dish. It is still spillover on upper edge of dish but it is cold sky 
there. This beard help me to reduce noise from digital links and gives abt 
1.4dB of additional gain. Now it is equal to abt 2.9m dish. May be in future 
I'll expand by mesh upper side too.

Feed improved by RA3AQ is here:

http://www.vhfdx.ru/downloads/Improved%20septum%20with%20dual%20mode%20horn.pdf

73, Sergey
RW3BP