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Radio Insulators²
2 of 20
·Front Cover
·I.F.Cover
·Page 3
·Page 4
·Page 5
·Page 6
·Page 7
·Page 8
·Page 9
·Page 10
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·I.B.Cover
·Back Cover

 
Lead-in through Pyrex Entering Insulator at Broadcasting Station WQAM, Miami, Fla.

Lead-in through PYREX Entering Insulator at Broadcasting Station WQAM, Miami, Fla.

"We use PYREX Insulators of six different types, find them better than other insulation we have used, and a real help in protecting quality of transmission, especially in damp atmosphere, and in maintaining long transmission range."

Copyright 1929, by Corning Glass Works