Should I connect isolated areas of ground pour?

Andrew asked Oct 27,2020
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As it shows, there are  two isolated areas of the ground pour. I'm using Eagle, so when I do the pour it does not place in these type of areas unless I explicitly place a via where the bottom ground pour can reach it.

Are there any reasons to/not to do this? I figure for larger unconnected areas it should be done, but for all the small gaps it can probably be avoided. In particular this is a board for an RF project, would this come into consideration at all?

r26.png

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    In most cases such as the one shown, I would probably remove the 2 small pours if they are necessary for shielding between 2 traces. As you deal with RF, these "fingers" of ground pour may appear as antennas & cause trouble. As you increase in frequency, things such as this become more of an issue to be considered. An alternative for this example may be to move the trace from between the pours to the upper right of the pours & then merge the pours together. Then you could add vias to the larger pour as you see fit.

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