I don't really know these things, but the probe used appears to be a
   coil with <=2 mm
   diameter: [1]https://www.langer-emv.de/en/product/rf-passive-30-mhz-up-
   to-3-ghz/35/rf-r-0-3-3-h-field-probe-mini-30-mhz-up-to-3-ghz/18 .  Not
   sure why they use an H-field probe; I would have expected E-field.

References

   1. https://www.langer-emv.de/en/product/rf-passive-30-mhz-up-to-3-ghz/35/rf-r-0-3-3-h-field-probe-mini-30-mhz-up-to-3-ghz/18