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Message: <blockquote data-quote="Vipersan" data-source="post: 757249" data-attributes="member: 325666">Hi friends ..sorry I've been absent for a few days ...Picked up a virus and its made me quite ill ...but needed to post as there seems quite a bit of despondacy around atm ..Ok ...A couple of key points when getting into Cband and fitting an lnb for the first time ..Cband LNB feeds are physically larger in diameter than ku lnbs ...so a bracket to mount it to an existing dish needs to be bought ..or manufactured to hold the lnb on the end of the lnb arm ..Local oscillator frequency is 5150 ...If you cannot set this in your set top box ...then you have to perform some calculations in order to obtain desired transponder frequencies...as the set top box cannot do this for you ..To set up an lnb correctly you should first ignore circular ..and set up on a linear broadcast if possible ..The demo'promo in Horizontal on Eutelsat5A  @2.8 East is perfect for this ..So ..no dielectric plate ...and adjust skew until this signal is at maximum ...You then Have H & V correct ...as youve set up Horizontal ..Now you can insert a plate ...and go for the circular polarised transmissions ...These are _not_ skew dependent ...and the lnb postion can be as many degrees out skew-wise ..as you like ...This is why you set up H/V first...To get Left or Right you insert the plate into the grooves in the lnb throat ..If you have 2 sets in the throat then a plate in either postion will either be Left or Right.If you only have one set of grooves ..then this is why you set up H and V FIRST...as convention says we use Left = Horizontal and Right = Vertical ..This can only be achieved on a one groove set lnb throat _IF_ you set linear correctly first.Hope this helps a little ....and don't just give up ..You'll need to become familiar with this sort of lnb(f) and how it works with respect to local osc frequency ...and polarisation ..If you're going to succeed with the Cband reception..rgdsVS</blockquote>

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