[Moon-Net] Prime-focus vs. Offset-dish
dominique.dehays at enac.fr
Wed Nov 23 10:00:52 CET 2016
Hi Manfred ,
I am interested to know how much sun/cs U get on 10Ghz with your system.
On my "tropo" system , consisting of a 100cm offset , all WG and a
sligthly worse preamp than yours , I get up to 10dB sun noise.
I can't came close to this on the 120cm prime focus I use for small
pistol EME. I agree with U that shadowing is nbot a problem , at least
for reasonnably sized PF. It is a question on illumination efficiency
and lower noise pickup.
I have no shadowing on the small eme system as I'm using a rear mounted
tvter and a shepperd crook.
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