No DC block. Don't know what it is, or that I needed one.
The LNBF switches via Diseqc. Set the Ultra for #1 for
Cband, #2 for Ku.
As far as the remote goes, there is a small UHF antenna on this receiver. If it isn't dual control (ie: UHF and IR) I dont think the RS remote or my programmable remote will do UHF.
THe receiver does have 2 input F connectors. I was interested only in analog C band reception. I was hoping that by setting the Ultra to C band, having it set the position via USALS, and set the LNBF via Diseqc, the data on the IF loop port could be seen by this Legend receiver - the "slave" option mentioned in these posts.