Need a way for Earth not to detect an extrasolar civilization that has radio

The exposition is that a civilization exists about 200 light years from earth and has been capable of radio communication for several thousands of years. They are not trying to hide from detection but have not been actively trying to communicate either.

I know we have several programs going on to try and detect such extraterrestrial radio signal. What plausible astronomical, technological, or human-error-related factor could I use to explain humanity not having picked up their signal?

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Need a way for Earth not to detect an extrasolar civilization that has radio

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