The Winegard PS1403 is a power supply for a preamplifier but is not a preamp. What amplifier is installed? If it's any of the AP-series, it's probably overloading.
The CM4228HD is far, far, far from being an omni-directional antenna. About the only thing MORE directional on UHF is a long UHF Yagi.
What specific channels are giving you problems? If they are not in the antenna's sweet spot, then reliable reception of them is not likely.
Last edited by ADTech; 5-Jan-2014 at 8:33 PM.
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