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The Old Timer's Bulletin (OTB)

Periodical   Volume 32Number 2August 1991

created by: Robert Rydzewski (11.Feb.14)
Page Content
created by
Robert Rydzewski
  • Frost Musette Horn Speaker
  
created by
Robert Rydzewski
  • Silent Keys: David M. Eller (N1AYU); Lloyd E. Furrow; Horace Gross (W1AB)
  • SK: Bill Lightfoot (W1PEG); Fred Shunaman (N2JLO); Fred R. Williams
  
created by
Robert Rydzewski
  • Restoring a 67-1/2 Volt Battery
  
created by
Robert Rydzewski
  • A Simple Battery Eliminator
  
created by
Robert Rydzewski
  • A Simple A & B Power Supply
  • Make Your Own 45-V Battery
  
11 
created by
Robert Rydzewski
  • Loudspeaker: H.H. Frost, CTS, & the Musette Radio Horn Speaker
  
12 
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Robert Rydzewski
  • WW I Navy Equipment-Identification System
  
13 
created by
Robert Rydzewski
  • Early Eqpt Profile: Navy CG-1104A Aircraft Transmitter
  
14 
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Robert Rydzewski
  • A Long Way From Home: Majestic 59
  
15 
created by
Robert Rydzewski
  • Vacuum Tube: Majestic & the Spray-Shield Tube
  • Majestic 58S, 6Y5, & 6E7 Tubes
  
17 
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Robert Rydzewski
  • What's it Worth?" - Then & Now
  
18 
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Robert Rydzewski
  • Wireless to Rent: First Marconi Marine Transmitters on Shortwave
  
19 
created by
Robert Rydzewski
  • Calculated Reactance Characteristics of 1900 Marconi Jigger Secondary and Vertical Antenna
  
20 
created by
Robert Rydzewski
  • ARRL Communications Dept Observers Notification Form from 1937
  
21 
created by
Robert Rydzewski
  • Loewe Valves Revisited
  • Loewe EB100 2-Band, AC-Powered Regenerator with Phono Input
  
22 
created by
Robert Rydzewski
  • Loewe EB100 Rear View
  • Loewe 2H3N
  
23 
created by
Robert Rydzewski
  • Loewe 2H3N Schematic
  • Substituting for Loewe Tubes
  
26 
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Robert Rydzewski
  • WD-11 Tube
  
31 
created by
Robert Rydzewski
  • Mailbag: Cheap Caps; DIY TV; Shipping Tubes…
  
32 
created by
Robert Rydzewski
  • Equipment Restoration: Removing Mold; Safety Test
  
33 
created by
Robert Rydzewski
  • Bowman Technical School
  • Receiver for NAA on 2500 Meters
  
34 
created by
Robert Rydzewski
  • Key & Telegraph: Constructing Historic Keys
  • Codetrol Semiautomatic, Invented by Bernard Breedlove in 1951
  • Western Electric 7B "Upside Down" Test-Desk Key
  • Key Found in Wrecked German Tank Near Munich in March 1945
  
35 
created by
Robert Rydzewski
  • Dictogrand "Roll" Speaker
  • The BC-655
  
36 
created by
Robert Rydzewski
  • Tubes in the R1155 Receiver
  
37 
created by
Robert Rydzewski
  • Zenith Product Code Since 1949
  
39 
created by
Robert Rydzewski
  • The General Electric M-81
  
40 
created by
Robert Rydzewski
  • Meet the Collectors: Recreating the Emerson BB-209
  
42 
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Robert Rydzewski
  • Communication Receiver: "All-Star Senior" - A Depression Receiver
  
44 
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Robert Rydzewski
  • An HRO Story
  
46 
created by
Robert Rydzewski
  • The RDG: An Unusual HRO-Derivative
  
53 
created by
Robert Rydzewski
  • Recent Obits: Arthur Baum; Cecil Effinger; Jack Feldman; John E. Fetzer
  • RO: Dr. Karen Gross Glen; R.A. Jeu Devine; Edgar F. Johnson; Harry T. Montgomery
  • RO: William H. Rule; Robert Strunsky; Albert J. Sylk; George V. Waldo; Jim Walsh
  • RO: Karl Otto Wyler; William Wright Bryan
  
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created by
Robert Rydzewski
  • The Horn Speaker Notebook
  • More Golden Age of Radio
  • A Transistor History Bonanza!
  • The Trouble Is Not In Your Set
  • 1991 Vintage Audioi & Radio Catalog
  • New Wireless Pioneers Catalog No. 8
  
55 
created by
Robert Rydzewski
  • Crystal Clear
  • The Hallicrafters Story, 1933-1975
  • The Setmakers: A History of the Radio & Television Industry
  • Lawlor's Radio Values: Catalin, Character, Mirrored, Novelty, Plastic
  

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