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Channel master c120 feed horn wanted
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<blockquote data-quote="Channel Hopper" data-source="post: 1107020" data-attributes="member: 175144"><p>OK, found one (eight bolt fitting, plus slot for chip fork dielectric plate) . Internal diameter is 18mm +/- 3% which from the formulae I am used to equates to a functional frequency range of 10.5 - 12.6GHz.</p><p></p><p>The minimum cut off for a circular waveguide at this diameter is 9.75 GHz, with upper in the region of 14.5 GHz when other factors take over creating losses, making a mid-range near 12.5GHz, which suggests an increase of the internal diameter from 18 to 19mm should assist in propagating the Ku band that everyone here is used to receiving with a universal LNB.</p><p></p><p>I still doubt Channel Master have messed up the focal point of their range of antennas (much less Andrew / Raven not picking up on the flaw) once buying up stock and then manufacturing of the same items.</p></blockquote><p></p>
[QUOTE="Channel Hopper, post: 1107020, member: 175144"] OK, found one (eight bolt fitting, plus slot for chip fork dielectric plate) . Internal diameter is 18mm +/- 3% which from the formulae I am used to equates to a functional frequency range of 10.5 - 12.6GHz. The minimum cut off for a circular waveguide at this diameter is 9.75 GHz, with upper in the region of 14.5 GHz when other factors take over creating losses, making a mid-range near 12.5GHz, which suggests an increase of the internal diameter from 18 to 19mm should assist in propagating the Ku band that everyone here is used to receiving with a universal LNB. I still doubt Channel Master have messed up the focal point of their range of antennas (much less Andrew / Raven not picking up on the flaw) once buying up stock and then manufacturing of the same items. [/QUOTE]
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Channel master c120 feed horn wanted
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