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DISH SETUP: Single sat, Multi-Sat & Motorised
How to improve reception(diy solution) on 120cms for astra 2 uk beam
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<blockquote data-quote="Terryl" data-source="post: 1096995" data-attributes="member: 369937"><p>You don't want to put anything metal or anything sprayed with a metallic paint out in front of the dishes prime focal area (other then the LNB mounting arm and the LNB itself) this could cause a scattering effect of the signals coming down from the satellite and degrade the performance.</p><p></p><p>The internal structure of the LNB (after you remove the outer plastic) has a forcing cone built into it, most likely made out of cheap pot aluminium, the LNB is designed to have as small a metal footprint as possible to prevent this.</p><p></p><p>The only effective way to get more signal to the LNB would be to go with a bigger dish, about every 3 to 4 inches (7.5 to 10 centimetres) increase in the diameter of the dish will get you about 2 to 3 dB of signal improvement.</p><p></p><p>Here is a site to help with that..... <a href="https://www.everythingrf.com/rf-calculators/parabolic-reflector-antenna-gain" target="_blank">Parabolic Reflector Antenna Gain - everything RF</a></p></blockquote><p></p>
[QUOTE="Terryl, post: 1096995, member: 369937"] You don't want to put anything metal or anything sprayed with a metallic paint out in front of the dishes prime focal area (other then the LNB mounting arm and the LNB itself) this could cause a scattering effect of the signals coming down from the satellite and degrade the performance. The internal structure of the LNB (after you remove the outer plastic) has a forcing cone built into it, most likely made out of cheap pot aluminium, the LNB is designed to have as small a metal footprint as possible to prevent this. The only effective way to get more signal to the LNB would be to go with a bigger dish, about every 3 to 4 inches (7.5 to 10 centimetres) increase in the diameter of the dish will get you about 2 to 3 dB of signal improvement. Here is a site to help with that..... [URL='https://www.everythingrf.com/rf-calculators/parabolic-reflector-antenna-gain']Parabolic Reflector Antenna Gain - everything RF[/URL] [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
How to improve reception(diy solution) on 120cms for astra 2 uk beam
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