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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
KA Band section
The DirecTV SL3K4NR1-03
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<blockquote data-quote="Vipersan" data-source="post: 916812" data-attributes="member: 325666"><p>I dont doubt that certain plastics with the correct dielectric properties would work to some degree..</p><p>Like you I've seen such feeds in use ..In Ku at least</p><p>There is one in a sort of polythene hidden in the cone of a bullet shaped ALPS lnb..</p><p>But as to efficiency ..particularly in Ka ..I have reservations.</p><p>We are after all dxing and need maximum signal capture ..so ..</p><p>imo the feed should indded be metal ...for our purposes at least..</p><p>In mass produced units for non fringe applications ..</p><p>Plastic may well suffice...</p><p>rgds</p><p>VS</p></blockquote><p></p>
[QUOTE="Vipersan, post: 916812, member: 325666"] I dont doubt that certain plastics with the correct dielectric properties would work to some degree.. Like you I've seen such feeds in use ..In Ku at least There is one in a sort of polythene hidden in the cone of a bullet shaped ALPS lnb.. But as to efficiency ..particularly in Ka ..I have reservations. We are after all dxing and need maximum signal capture ..so .. imo the feed should indded be metal ...for our purposes at least.. In mass produced units for non fringe applications .. Plastic may well suffice... rgds VS [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
KA Band section
The DirecTV SL3K4NR1-03
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