Dggrr
Member
- Joined
- Sep 2, 2006
- Messages
- 58
- Reaction score
- 60
- Points
- 18
- Age
- 69
- My Satellite Setup
- VU + Zero, Triax TD88, Technomate TM2600 (Plus CM 1.2 in bits behind the shed)
- My Location
- SE
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).
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).