Show fa philco h has new type radio tube R there is a myrald of 0 mysteries locked wicked up in the new all glass maktal radio tube just developed dov eloped by phileo philco radio engineers that are quite inconceivable t to 0 the everyday user says ken dalton local philco radio dealer within this small glass 9 tube white heat reaching a potential of df degrees temperature and over oer Is obtained when the radio set la is turned on and yet this new tube de eliminates any 1 danger whatever of the radio heating up 1 and causing a fire haz baz ard tn III reality said mr dalton these liew hew tubes imprison a miniature world in violent revolution resolution tiny electrons speed from 75 to miles a a second this innocent gaass bulb sends the voice through the he ner nt at the unbelievable speed of miles a second I 1 such a rare raie vacuum ts ls necessary j tor for the operation of radio tubes that mbael in III the finished tube the vacuum Is so high that one RIOM atom of air Is separated from its neighbors by a distance 1000 times gre greater etier than tie the relative distance beti between veen the earth and sun this new all glass tube contribution onby by philco to the radt radio oil industry Is being used for the first time in abe the now new line i of Tran compact radios and accord according 1119 to word received by mr dalton yesterday the fars first shipment of these new radio sets has left leff philadelphia for distribution in this area |