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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Diseqc 1.1 switch insertion loss
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<blockquote data-quote="Dggrr" data-source="post: 1148919" data-attributes="member: 238167"><p>I think my question is on the relationship of insertion loss db and SNR db (if any!).</p><p></p><p>One of my setups is currently a ~30 metre cable run to a Diseqc 1.0 4 port switch which has a USALS Diseqc 1.2 motor on port A and a further ~8 meters run to 3 LNBS on a toroidal Wave Frontier T55 using switch ports B, C and D.</p><p></p><p>This works well, but the LNB on the T55 for 9E only gives about a 9.5db SNR back at the SF8008 receiver.</p><p></p><p>I'm thinking that it would be neater to have a single cable from the first Diseqc 1.0 switch to the T55 and then short runs to each T55 LNB using a Diseqc 1.1 switch.</p><p></p><p>Is the Diseqc 1.1 insertion loss likely to be a problem?</p><p></p><p>An advantage of the cascaded arrangment would be that I could add a few more LNBs to the T55, probably 19e and 13e (currently 28,2e, 9e and 5e).</p></blockquote><p></p>
[QUOTE="Dggrr, post: 1148919, member: 238167"] I think my question is on the relationship of insertion loss db and SNR db (if any!). One of my setups is currently a ~30 metre cable run to a Diseqc 1.0 4 port switch which has a USALS Diseqc 1.2 motor on port A and a further ~8 meters run to 3 LNBS on a toroidal Wave Frontier T55 using switch ports B, C and D. This works well, but the LNB on the T55 for 9E only gives about a 9.5db SNR back at the SF8008 receiver. I'm thinking that it would be neater to have a single cable from the first Diseqc 1.0 switch to the T55 and then short runs to each T55 LNB using a Diseqc 1.1 switch. Is the Diseqc 1.1 insertion loss likely to be a problem? An advantage of the cascaded arrangment would be that I could add a few more LNBs to the T55, probably 19e and 13e (currently 28,2e, 9e and 5e). [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Diseqc 1.1 switch insertion loss
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