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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
X band Milsat and Deep Space Set-up
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<blockquote data-quote="Channel Hopper" data-source="post: 1059082" data-attributes="member: 175144"><p><em>WR75 cut off is around 7.9GHz so you will need to hack the waveguide. Some LNBs use parallel line inter-stage coupling which will limit the LNA bandwidth. I'll be interested to see how you get on with the mods</em></p><p></p><p>Understood. With the earlier designs of LNB the probe can be removed completely from the casting along with the circuitry, I could then invite it to sit inside a bit of 112 sized pipe, once additional material is soldered to the correct dimensions.</p><p></p><p>I have enough experience of dielectric material to depolarise the signals, but if the worst come to the worst, one of my works colleages has a 3D printing machine to shrink and print some of the C band mechanical waveguides I have lying about.</p></blockquote><p></p>
[QUOTE="Channel Hopper, post: 1059082, member: 175144"] [I]WR75 cut off is around 7.9GHz so you will need to hack the waveguide. Some LNBs use parallel line inter-stage coupling which will limit the LNA bandwidth. I'll be interested to see how you get on with the mods[/I] Understood. With the earlier designs of LNB the probe can be removed completely from the casting along with the circuitry, I could then invite it to sit inside a bit of 112 sized pipe, once additional material is soldered to the correct dimensions. I have enough experience of dielectric material to depolarise the signals, but if the worst come to the worst, one of my works colleages has a 3D printing machine to shrink and print some of the C band mechanical waveguides I have lying about. [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
X band Milsat and Deep Space Set-up
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