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Tech Head - The Technology Section
Lnb dro adjusting measurement
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<blockquote data-quote="Terryl" data-source="post: 1069147" data-attributes="member: 369937"><p>You would need a spectrum analyzer the goes above 30 GHz or one that goes to three times the LO frequency, (LO frequecy is 9.5 to 12.5 GHz depending on the application the LNB is used for) this to look for any unwanted spurs or out of tune harmonics on the LO frequency, it would also need an isolated frequency probe (non contact) as to not affect the LO it's self.</p><p></p><p>That and a non-metallic adjustment tool, if looking at the IF output (900 MHz to 2.5 GHz) it may not work too good, as that frequecy is input dependent.</p><p></p><p>Why if I may ask would you need to adjust this??</p></blockquote><p></p>
[QUOTE="Terryl, post: 1069147, member: 369937"] You would need a spectrum analyzer the goes above 30 GHz or one that goes to three times the LO frequency, (LO frequecy is 9.5 to 12.5 GHz depending on the application the LNB is used for) this to look for any unwanted spurs or out of tune harmonics on the LO frequency, it would also need an isolated frequency probe (non contact) as to not affect the LO it's self. That and a non-metallic adjustment tool, if looking at the IF output (900 MHz to 2.5 GHz) it may not work too good, as that frequecy is input dependent. Why if I may ask would you need to adjust this?? [/QUOTE]
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Lnb dro adjusting measurement
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