Update: NO JOY! Still get random, momentary blackouts, pixelation, and some s0a00 disconnects after 6PM Central. So after new connectors, power level adjustments by Tech this just confirms that this is not an RF issue. RF connections are not channel selective. This is not an opinion, but fact. The only way certain channels keep acting up is at the source. I see the same problems showing up here on the forum quite a bit lately.
And by the way...FIX those %&* Audio levels required by the FCC. Getting worse, not better!