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Perfboard has holes, copper clad board is a solid copper plane on e.g. FR-4 (please don't ask what FR-4 is, just Google it).
Perfboard is more for through-hole components, copper clad is more for SMD (unless you drill holes in it). Copper-clad board gives the advantage of a solid ground plane (with careful design by e.g. you). Before you ask again, a solid ground plane means using all or most of PCB surface for the ground connections.
Please, for God's sake, I beg you - Google at least one of the multitude of things you ask here yourself first once in a millenium. My lazy, sleep-loving cats study harder . You won't learn or understand much asking to be spoon-fed every single thing continually, I mean it nicely.
Perfboard was very common with amateurs a few decades ago. I'm not sure how radio enthusiasts made a ground plane.
Or you would etch your own boards (if you were so inclined). A ground plane was already present in the copper sides.
Components and IC's were through-hole with solder connections. However the wavelength of gigahertz radio becomes short (a few inches) so that lengthy leads are undesirable.
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. You won't learn or understand much asking to be spoon-fed every single thing continually, I mean it nicely.
