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Satellite TV receivers & systems support forums
Fringe Reception General
Feedhorn for Prime Focus 11.7 to 12.2 ghz
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<blockquote data-quote="canofan" data-source="post: 510943" data-attributes="member: 259756"><p>I see that you want to revive your Triax140PF. </p><p>I do not have the data sheet and nobody was able to supply it. The f/d is 0.34. I know though that it is a relic from the analog era. Mine was probably reaffected to digital later. I obtained it equipped with an SMW WDL1000E (two outputs one for high and one for low, and does not therefore respond to 22khz) and a feedhorn with a transition. The problem is the boss which also allows you to skew the LNB, very rudimentary and awkward to use, with too small an angle for tweaking. The output side of the feedhorn is rectangular WR75 and so is the transition.</p><p>I was not happy with the combination and removed it.</p><p>My fringe area is Nilesat with Showtime rain or shine. Since I know nothing about the feedhorn used, I decided to do it right and find a proper feedhorn for its intended usage: 11.7 to 12.2ghz, give it another try, and use it with a Norsat 4206A, for the verticals in Nilesat initially. If I succeed I shall try using it for the horizontals in a bid to improve further on the Channelmaster/Norsat combination. This combination gave me 3.5 db increase making my CM120 the equivalent of an 180cm dish.</p></blockquote><p></p>
[QUOTE="canofan, post: 510943, member: 259756"] I see that you want to revive your Triax140PF. I do not have the data sheet and nobody was able to supply it. The f/d is 0.34. I know though that it is a relic from the analog era. Mine was probably reaffected to digital later. I obtained it equipped with an SMW WDL1000E (two outputs one for high and one for low, and does not therefore respond to 22khz) and a feedhorn with a transition. The problem is the boss which also allows you to skew the LNB, very rudimentary and awkward to use, with too small an angle for tweaking. The output side of the feedhorn is rectangular WR75 and so is the transition. I was not happy with the combination and removed it. My fringe area is Nilesat with Showtime rain or shine. Since I know nothing about the feedhorn used, I decided to do it right and find a proper feedhorn for its intended usage: 11.7 to 12.2ghz, give it another try, and use it with a Norsat 4206A, for the verticals in Nilesat initially. If I succeed I shall try using it for the horizontals in a bid to improve further on the Channelmaster/Norsat combination. This combination gave me 3.5 db increase making my CM120 the equivalent of an 180cm dish. [/QUOTE]
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Fringe Reception General
Feedhorn for Prime Focus 11.7 to 12.2 ghz
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