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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
KA Band section
Ka with Prodelin/Viasat 1.2m Band B
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<blockquote data-quote="s-band" data-source="post: 1020094" data-attributes="member: 407744"><p>Thanks st1 & CH. Inspired by John & qwer's ideas.</p><p></p><p>[USER=175005]@John[/USER] I moved the LO around on the band B Gilat and the limitation is as I thought, it's the RF filter. There's nothing to be gained by moving the LO down unless you wanted shift the IF range at the expense of coverage. The LO will stay locked over a range of 17.2-19.6GHz (after doubler) but that's way outside the spec of the PLL chip. The LNBs are usable over a range of 18.5-20.6GHz with a bit of droop at both ends.</p></blockquote><p></p>
[QUOTE="s-band, post: 1020094, member: 407744"] Thanks st1 & CH. Inspired by John & qwer's ideas. [USER=175005]@John[/USER] I moved the LO around on the band B Gilat and the limitation is as I thought, it's the RF filter. There's nothing to be gained by moving the LO down unless you wanted shift the IF range at the expense of coverage. The LO will stay locked over a range of 17.2-19.6GHz (after doubler) but that's way outside the spec of the PLL chip. The LNBs are usable over a range of 18.5-20.6GHz with a bit of droop at both ends. [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
KA Band section
Ka with Prodelin/Viasat 1.2m Band B
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