{"product_id":"6146w-jan-phillips-ecg-vacuum-tube-aka-7212-matched-pair-hickok-tested","title":"6146W JAN Phillips ECG Vacuum Tube (aka 7212), MATCHED PAIR,  Hickok Tested","description":"\u003cp\u003eThis is a Phillips ECG tube, a 6146W. \u003c\/p\u003e\n\u003cp\u003ePhillips ECG was previously known as Sylvania GTE, and before that, just plain Sylvania.\u003c\/p\u003e\n\u003cp\u003eThe W means it is the rugged version of a 6146.  It's also the same as a 7212. \u003c\/p\u003e\n\u003cp\u003eIt's a JAN tube, which means Joint Army Navy.  JAN tubes are known for their ability to stand up to harsher than usual treatment.\u003c\/p\u003e\n\u003cp\u003eA \"matched pair\" means the mutual conductance of one tube is within 10% of the other tube. \u003c\/p\u003e\n\u003cp\u003eTested on Hickok 533A, Gm recorded on side of the tube box.\u003c\/p\u003e\n\u003cp\u003ePhotos are of one example of the available matched pairs.  It may or may not be the same tube you receive.  \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBlack plates. \u003c\/li\u003e\n\u003cli\u003ePrint may be green or blue.  \u003c\/li\u003e\n\u003cli\u003eDual halo getters.\u003c\/li\u003e\n\u003cli\u003eMade in USA.\u003c\/li\u003e\n\u003cli\u003eShips quickly and safely from Mississippi.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Phillips ECG","offers":[{"title":"Default Title","offer_id":46324742914244,"sku":"RB13 L4","price":50.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/9413\/8052\/files\/20260630_160642.jpg?v=1782854151","url":"https:\/\/fatcat.parts\/products\/6146w-jan-phillips-ecg-vacuum-tube-aka-7212-matched-pair-hickok-tested","provider":"FatCat.Parts","version":"1.0","type":"link"}