{"id":"S85097854","label":"Parametric amplifiers","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85097854","normalized_label":"parametric amplifiers","broader":["http://id.loc.gov/authorities/subjects/sh85084952","http://id.loc.gov/authorities/subjects/sh85097855"],"aliases":["Amplifiers, Parametric","MAVAR (Electronics)","Mavars","Microwave amplification by variable reactance","Reactance amplifiers","Variable parameter amplifiers"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85097854","provider":"lcsh","revision":"bbcb6e8903894f6b","taxonomy_revision":"f050b5d4780b1289","title":"Parametric amplifiers","url":"/topics/S85097854","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"10126554886700402180","address_version":"morton4x16-v1","coordinates":[0,20,18933,63488],"answer_status":"Directory metadata; local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}