Have a nss6 dish setup for Ku,its own dedicated coax to the Tarbs Box stb3100 with legit sub card,powered up stb,no pics,anywhere.sig.strength 75,quality 2-8 fluctuating on stb sig.meter. reset stb,entered all ku band freq.and s.r.changed polarity H to V and back ,map channels,still nothing no change.seems a firmware issue with the stb3100 unit no go on Tarbs box and NSS6.Just my findings?if anybody has any further ideas,or tips I will give it a go.