{"meta":{"version":"2.1","_links":{"self":{"href":"https://api.vam.ac.uk/v2/object/O371995"},"collection_page":{"href":"https://collections.vam.ac.uk/item/O371995/"}},"images":{"_primary_thumbnail":"https://framemark.vam.ac.uk/collections/2025PH9468/full/!100,100/0/default.jpg","_iiif_image":"https://framemark.vam.ac.uk/collections/2025PH9468/","_alt_iiif_image":[],"imageResolution":"high","_images_meta":[{"assetRef":"2025PH9468","copyright":"© Victoria and Albert Museum, London","sensitiveImage":false},{"assetRef":"2015HX7008","copyright":"© Victoria and Albert Museum, London","sensitiveImage":false}]},"see_also":{"_iiif_pres":"https://iiif.vam.ac.uk/collections/O371995/manifest.json","_alt_iiif_pres":[]}},"record":{"systemNumber":"O371995","accessionNumber":"W.24-1981","objectType":"Radio","titles":[{"title":"Philips Superinductance model 634A","type":"manufacturer's title"},{"title":"Lentebode","type":"manufacturer's title"},{"title":"The Ovaltiney Set","type":"popular title"}],"summaryDescription":"This model is one of a series of receivers in which the Philips company achieved, with tuned radio-frequency circuits, a selectivity and range equal to that of contemporary superheterodyne receivers. The term ‘superinductance’ refers to the tuning coils, Litz-wound on glass formers whose efficiency was largely responsible for the success of the design.\r\n\r\nThe receiver employs two variable-mu high-frequency amplifiers, preceded by a band-pass input circuit, and followed by a diode-tetrode detector/amplifier and a pentode output valve. The tuning knob controls four carefully aligned capacitors, and also a potentiometer which varies the bias on the high-frequency valves, to maintain constant sensitivity over the waveband. Source: Science Museum, London\n\nThis model was used in an advert for the Ovaltine milk drink and was sometimes referred to as the 'Ovaltiney set'.","physicalDescription":"A radio in possibly walnut venner, with bakelite inset speaker fret and knobs. The Philips circular logo is embossed beneath the dial.","artistMakerPerson":[],"artistMakerOrganisations":[{"name":{"text":"Philips","id":"A11845"},"association":{"text":"manufacturers","id":"AAT25230"},"note":""}],"artistMakerPeople":[],"materials":[{"text":"wood","id":"AAT11914"},{"text":"Bakelite","id":"AAT14544"},{"text":"phenolic","id":"AAT14540"}],"techniques":[{"text":"veneering","id":"AAT53878"},{"text":"compression moulding","id":"AAT54068"}],"materialsAndTechniques":"Veneered wooden case; Bakelite","categories":[{"text":"Audio equipment","id":"THES49027"},{"text":"Product design","id":"THES49025"},{"text":"Entertainment & Leisure","id":"THES48959"},{"text":"Household objects","id":"THES48939"}],"styles":[{"text":"art deco","id":"AAT21426"}],"collectionCode":{"text":"FWK","id":"THES48597"},"images":["2025PH9468","2015HX7008"],"imageResolution":"high","galleryLocations":[{"current":{"text":"002","id":"THES342703"},"free":"","case":"","shelf":"","box":""}],"partTypes":[[{"text":"Radio","id":""}]],"contentWarnings":[{"apprise":"","note":""}],"placesOfOrigin":[{"place":{"text":"Eindhoven","id":"THES250794"},"association":{"text":"designed","id":"x29338"},"note":""},{"place":{"text":"United Kingdom","id":"x29336"},"association":{"text":"manufactured","id":"x29350"},"note":"probably"}],"productionDates":[{"date":{"text":"1933-1934","earliest":"1933-01-01","latest":"1934-12-31"},"association":{"text":"made","id":"x28654"},"note":""}],"associatedObjects":[],"creditLine":"Given in memory of David Rush","dimensions":[{"dimension":"Width","value":"42","unit":"cm","qualifier":"","date":{"text":"","earliest":null,"latest":null},"part":"","note":""},{"dimension":"Height","value":"480","unit":"cm","qualifier":"","date":{"text":"","earliest":null,"latest":null},"part":"","note":""},{"dimension":"Depth","value":"28.5","unit":"cm","qualifier":"","date":{"text":"","earliest":null,"latest":null},"part":"","note":""},{"dimension":"Weight","value":"16.5","unit":"kg","qualifier":"","date":{"text":"","earliest":null,"latest":null},"part":"","note":""}],"dimensionsNote":"Measurements taken from online source - not checked on object.","marksAndInscriptions":[],"objectHistory":"Bequeathed by David Rush [81/695].\r\n","historicalContext":"","briefDescription":"Radio, Philips 634A, 1933-34, veneered wood case","bibliographicReferences":[],"production":"","productionType":{"text":"Mass produced","id":"THES48863"},"contentDescription":"","contentPlaces":[],"associatedPlaces":[],"contentPerson":[],"associatedPerson":[],"contentOrganisations":[],"associatedOrganisations":[],"contentPeople":[],"associatedPeople":[],"contentEvents":[],"associatedEvents":[],"contentOthers":[{"text":"radio","id":"AAT249989"}],"contentConcepts":[],"contentLiteraryRefs":[],"galleryLabels":[],"partNumbers":["W.24-1981"],"accessionNumberNum":"24","accessionNumberPrefix":"W","accessionYear":1981,"otherNumbers":[],"copyNumber":"","aspects":["WHOLE"],"assets":["2021NB6093"],"recordModificationDate":"2025-09-22","recordCreationDate":"2009-06-24","availableToBook":true}}