If you use the Primestar dish with the dual H/V LNB, you CAN use it with a DP34. HOWEVER, this will ONLY work if your locals are on an ODD transponder. AND, keep in mind that E* is notorious about shuffling channels around, so just because it is on an ODD now, doesn't mean it will stay on an odd. The reason this works is because the P* LNB is NOT voltage switched, like most other legacy LNBs. Therefore, the 19V charge from the DP34 will allow the P* LNB to send the odds back on the lower band where it is expected. With a voltage switched LNB, the 19V chage would send the evens back on the lower band, and DP is not expecting it on the lower band. I don't remeber which polarty E*9 uses for the odds, but it CAN work. This is the ONLY instance of a legacy LNB working with a DP setup that I know of, and it is unique because of how the P* LNB works.