SDR antenna foot
thingiverse
The standard antenna foot typically included with budget-friendly SDR radios tends to be unstable. These feet are often wider and have space for several small 8x3mm magnets. To upgrade the original antenna, simply remove the brass piece from its base and attach it to the new foot's top section. If you want to further enhance the antenna's performance, there is room to install an LNA4ALL LNA module; just modify the OpenSCAD file accordingly if desired.
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