35 items found in this collection
Millions upon millions of lamp bulbs and Radio Tubes You Can Trust..
Put in KEN-RADS... The First Step to Good Reception
It Depends on the TUBES You Use
Standard Quality - PLUS
A Radiotron for Every Purpose
A radio set is as old as its tubes.
"I wonder why..I never thought of this before"
A chip off the OLD BLOCK
See that he brings SYLVANIA TUBES when he comes to repair your set
Masterpieces of Precision
more efficient... in miniature
Electronics...Basic strategy for stable profits
Federal's vast Tube-Making Experience
The Tubes you want with the Quality you demand!
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