Any DIY guide for passive radar with minimum/no soldering?

I am on a personal project to detect drones above my building (there are many at nighttime) with RTL-SDR dongles or with more advanced SDR devices such as HackRF or LimeSDR. But not so good on electronics speciality works such as canceling out circuits,parts etc..Any help to do it or guide?

submitted by /u/stevevaius
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