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Hello

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Here are internal photos of 60GHz version: https://fccid.io/TV7CUBE60/Internal-Photos/Internal-Photos-4610555

wow, thank

The front cover may be a dielectric lens, to focus the beam on the antenna array - if that’s true, it’s really clever :slight_smile:
https://en.wikipedia.org/wiki/Lens_antenna

Antenna’s and enclosures are almost always about specific dimensions and shape for rated performance - there will 100% be a reason for it to stick out like that, to help shape the beam either for transmit or receive. It might ‘work’ without such a big cover but it might not work as well.