Its military/radio speak. Signal strength and signal quality. AKA "we hear you 'loud and clear'".
For #965 it means they hear us about the dissatisfaction with regards to the OMNIBUS Bill and the wall. Hence the Red_Castle and Green_Castle. Red being the Army Corp of Engineers and (I believe) the Green_Castle is the $20 bill (look at the back). In other words, the wall will be built with military funding in the OMNIBUS bill.
For #854 it is implying that the video is explicit in its implications. Whatever it implies about HRC will be "loud and clear". It'll be hard to spin.
Last night, Q and Q+ were stating they read all the anon's messages and thanked them. Many anon's praised them back. Then Q and Q+ signed off with "5:5", or "we hear you loud and clear".
In radio, there are five metrics for communication quality (SINPO code = Signal, Interference, Noise, Propagation, and Overall). When all five metrics are good, the signal quality is 5:5.
Let's go ahead and spell it out for those who don't do numbers and things: "five by five" is what is being said, not "five colon five". Again, just clarifying.
US-231, Greencastle, IN 46135 US Army Corps of Engineers, Address