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?

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( COMENTARIO ) 5A1AL, Libia por N0UN

5A1AL es un viejo amigo mío desde los años 90. Regularmente abubaker solía pparar en 14.240 con  WA2JUN (SK) y el Grupo DX 240. Usaba …

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