For myself, all vibrational energies made by those who assembled Spirit Boxes / Radios, even down to the materials used, retain their contained energies within, pre-molded.
And that is whom / that, which comes across.
Especially experienced traumas, pain, emotional upheavals, from the workers.
(everyone loves their job)
Residual 'exhaust' of the physical manufacturers' energies of the spirit radio boxes components, coming through.
Diluting entire objective.
Such as eating food prepared by those who were upset, angry, ingesting those energies.
Where there is no separation, be wary of what one is inviting to come in.
To call is to be called upon.