Shouldn't be a problem at all. I have three customers out there with that configuration.
I had a similar problem using a DP34 switch. My setup was with one dish rather than 3 seperate dishes, but I had the same issue as you. My receivers were a DP322 and a DP311. I as you decided the switch may be bad since I had bought it used. I replaced it with a DPP44 (I was furstrated with the DP34 not working correctly, so I went ahead and paid more to try the DPP44.), and everything works great now as it should.blooker68 said:Thanks Mike500. I bought a used dp34 and that might be the problem. The switch is intermittent in recognizing the antennas. One time it might see 110 and 119 and the next see nothing. I tried doing a switch check with no switch attached to reset things, but it did no good. I wish I had a known-good DP34, but don't.
Like he says....boba said:A lot of DP34 have been sold and many questionable ones have been run through Ebay for "bargain" prices so buyer beware.