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<blockquote data-quote="John" data-source="post: 970322" data-attributes="member: 175005">Just a little input re: TiT,s .... totally poke and hope to pass a couple of hours&nbsp; but interesting results.My Cband reception for circular until the other night consisted of a BSC 421 lnbf with a National ADL poloriser barrel.&nbsp;&nbsp; The BSC-421 died abruptly so i substituted it with one of my TiTs as a stop gap.After reading the excellent posts above i decided to have a play,&nbsp; non scientific , just used my analyser to re-align onto 47.5 W afterwards.&nbsp;&nbsp; Using 47.5 West, SES Promo channel at 4.178 LHC&nbsp; the measured Quality reading on a TM 5502 was 52% absolute max on Vertical probe which -just- managed to get an unsteady lock ,&nbsp; and 62% max on the Horizontal probe !.&nbsp; Didn't bother to get absolute dBuV readings off the analyser as i was only having a half hearted play.&nbsp;&nbsp; Decided to butcher one of my TiT's by taking off aprox 40mm off the length of the waveguide, re-united it with the poloriser barrel, set up a quick x-pol check and then re-did the comparison check again between the two probe voltage settings and the results were 59% on either probe with solid locks and no drop-outs.&nbsp;&nbsp; A quick look at the analyser across the whole band seems to look the same as original with no gain drop or increases that i can see.&nbsp; Might try and refine it at some point ??.[ATTACH=full]92952[/ATTACH] [ATTACH=full]92953[/ATTACH]</blockquote>

[QUOTE="John, post: 970322, member: 175005"] Just a little input re: TiT,s .... totally poke and hope to pass a couple of hours but interesting results. My Cband reception for circular until the other night consisted of a BSC 421 lnbf with a National ADL poloriser barrel. The BSC-421 died abruptly so i substituted it with one of my TiTs as a stop gap. After reading the excellent posts above i decided to have a play, non scientific , just used my analyser to re-align onto 47.5 W afterwards. Using 47.5 West, SES Promo channel at 4.178 LHC the measured Quality reading on a TM 5502 was 52% absolute max on Vertical probe which -just- managed to get an unsteady lock , and [U][I]62% [/I][/U]max on the Horizontal probe !. Didn't bother to get absolute dBuV readings off the analyser as i was only having a half hearted play. Decided to butcher one of my TiT's by taking off aprox 40mm off the length of the waveguide, re-united it with the poloriser barrel, set up a quick x-pol check and then re-did the comparison check again between the two probe voltage settings and the results were 59% on either probe with solid locks and no drop-outs. A quick look at the analyser across the whole band seems to look the same as original with no gain drop or increases that i can see. Might try and refine it at some point ??. [ATTACH=full]92952[/ATTACH] [ATTACH=full]92953[/ATTACH] [/QUOTE]

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