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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
C-Band Reception, UK and Europe
Extending a satellite TV dish using ali sheets
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<blockquote data-quote="Channel Hopper" data-source="post: 797998" data-attributes="member: 175144"><p>Many compounds can be used as a plate, from glass fibre to perspex to polybin lids to the material for kitchen chopping boards. The only requirement is that it exhibits dielectric properties at the frequencies used, and can be cut or moulded to fit into the throat of the feed. </p><p></p><p>Apart from that, it's just a question of experimenting to find what works and what doesn't. I would have thought that standard glass would work, but it's unlikely I have enough patience cutting a pane of the stuff to shape.</p><p></p><p>edit - a list of materials and their permittivity</p><p></p><p>_http://www.asiinstr.com/technical/Dielectric%20Constants.htm</p><p></p><p>Acetone compounds appear to be some of the best (and water scores very well), though whether this is at high microwave frequencies, I'm not sure.</p></blockquote><p></p>
[QUOTE="Channel Hopper, post: 797998, member: 175144"] Many compounds can be used as a plate, from glass fibre to perspex to polybin lids to the material for kitchen chopping boards. The only requirement is that it exhibits dielectric properties at the frequencies used, and can be cut or moulded to fit into the throat of the feed. Apart from that, it's just a question of experimenting to find what works and what doesn't. I would have thought that standard glass would work, but it's unlikely I have enough patience cutting a pane of the stuff to shape. edit - a list of materials and their permittivity _http://www.asiinstr.com/technical/Dielectric%20Constants.htm Acetone compounds appear to be some of the best (and water scores very well), though whether this is at high microwave frequencies, I'm not sure. [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
C-Band Reception, UK and Europe
Extending a satellite TV dish using ali sheets
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