problem getting ku on my big dish

[regulator55]

Hello, I have a dsr920 and a 10' dish that I was using with a c band feedhorn and lnb. I bought a new c and ku feedhorn and lnb's but when I go to hook up the ku on the back of the dsr920 receiver my c band channels go out. I changed the setting on the receiver to dual c and ku setup. Any idea what is going on here? Thanks for any help.

 

[voomvoom]

I don't know what lnb's you have, but with my set up, I have lnb's and not lnbf's, and the setting is "C-Band and Ku-Band LNBs". Hope this will work. Good luck.

Al

 

[AntAltMike]

...when I go to hook up the ku on the back of the dsr920 receiver my c band channels go out.

Hmm... Do you have separate coaxes for the C and Ku KNBs? If you have a short in the Ku coax, it might be pulling down the LNB source voltage such that it can no longer adequately source either LNB.