Posted by earthworm on Jul 17, 2020; 6:56pm
URL: https://www.es-forum.com/Is-there-any-way-to-measure-electromagnetic-radiation-between-1khz-and-30mhz-tp4035594p4035632.html

both, by far no such accuracy under real world circumstances in any claimed range.
skip the word "even" related to those Safe & Sound toys.
not even :
https://aaronia.com/spectrum-analyzers/spectran-v4-handheld-sweep-analyzer/
plus
https://aaronia-shop.com/products/portable-isotropic-antenna-pro-version
plus
https://aaronia.com/spectrum-analyzers/spectran-nf-handheld-niederfrequenz
i had the latter years ago and returned it because of some clearly wrong readings