I'm guessing you currently have two coax connected to each DVR.
"If so", then you don't have SWiM [single wire], and the boxes connected to the back of the receivers are BBCs, and not DECAs.
The HR34 only has one input, so SWiM is a must.
"If so", then you don't have SWiM [single wire], and the boxes connected to the back of the receivers are BBCs, and not DECAs.
The HR34 only has one input, so SWiM is a must.