Review on 📡 High-Gain K-180WLA Active Loop Broadband Receiving Antenna: Extended Frequency Range 100kHz-180MHz, Enhancing SDR Radio Performance - Small Loop Short Wave Antenna by Cesar Carter

Works well and for the price you can't complain about the performance. I use it upside down on my apartment balcony and you don't see it at all. It has a long cable from the box that the loop connects to and a separate box that you connect the power to which I assume the preamp goes to. I'm going to put everything in a box as I think reducing the length is best for noise reduction. I use it with a cheap 12-bit SDR with no problems.