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DISH SETUP: Single sat, Multi-Sat & Motorised
Is it 17v or 18v?
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<blockquote data-quote="Captain Jack" data-source="post: 1146339" data-attributes="member: 243342"><p>I seem to have an issue with my polarity switching on my main Ku LNB (Inverto something-or-other). Verticals are fine but horizonals are black. </p><p></p><p>The cable run is quite long at around 40m, plus there's a DiSEqC switch at the end of it to flip between C and Ku LNBs. The voltage at the LNB end, when H is selected, is around 17.6V. Is that enough to switch the LNB to the horizontal frequency? The C band LNB seems fine in both polarities. The switch itself causes a 0.4v drop - it's dead-on 18v before that. </p><p></p><p>Suspected a knackered LNB, I replaced with another Inverto (found in the garage) but that has the same issue. I need to spend some time at the dish end with a meter to see whether the LNB will switch to H at all - just in case the replacement one is also knackered. Also need to try bypassing the switch. </p><p></p><p>But it's annoying - something I thought was an easy fix is turning into a time sink. </p><p></p><p>Incidentally - what's a decent C120 LNB these days? There don't seem to be many around...</p></blockquote><p></p>
[QUOTE="Captain Jack, post: 1146339, member: 243342"] I seem to have an issue with my polarity switching on my main Ku LNB (Inverto something-or-other). Verticals are fine but horizonals are black. The cable run is quite long at around 40m, plus there's a DiSEqC switch at the end of it to flip between C and Ku LNBs. The voltage at the LNB end, when H is selected, is around 17.6V. Is that enough to switch the LNB to the horizontal frequency? The C band LNB seems fine in both polarities. The switch itself causes a 0.4v drop - it's dead-on 18v before that. Suspected a knackered LNB, I replaced with another Inverto (found in the garage) but that has the same issue. I need to spend some time at the dish end with a meter to see whether the LNB will switch to H at all - just in case the replacement one is also knackered. Also need to try bypassing the switch. But it's annoying - something I thought was an easy fix is turning into a time sink. Incidentally - what's a decent C120 LNB these days? There don't seem to be many around... [/QUOTE]
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DISH SETUP: Single sat, Multi-Sat & Motorised
Is it 17v or 18v?
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