Tube Tidbits Pages

"Tube Tidbits" are articles on a variety of tube and related topics. Future articles will be added as the muse strikes me, but feel free to offer suggestions for topics. Below are a list of the titles. Just click on the title to read the article. Enjoy!

 Substituting for the 7591
 Wunderlich Tubes (who made them and how they work)
 Octal Tubes and Their Predecessors (cross reference)
 RCA Receiving Tube Manuals (pictures)
 Antique Tube Equivalents (cross reference)
 Two Digit Types From 1 to 100 (descriptions)
 The Amazing Crosley Autoexpressionator
 An FM Crystal Set
 Some Additional 1600 Series Tubes
 A Note on Bernie Magers
 The Founding of RCA and the Relationship Between RCA and Cunningham
 The Vacuum Tube Situation by Elmer Cunningham (from Pacific Radio News, February 1920)
 Gold Seal Metal Glass Tubes
 


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