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| Volume 10, Number 1 - February,
2008 |
- GE's CRT Production in Syracuse,
NY
A chronology ending with the cessation of production in May,
1987.
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- DuMont "House Numbered"
Tubes - 2
A continuation of the December 2007 Tube Collector article with
additional information.
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- Early Development of the Reflex
Klystron - Part 1
An in-depth discussion covering US and European types.
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Bernie Magers
Obituary of this noted tube author.
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Weird Tube of the Month - The NB1-NB8
Ballasts
Unusual Raytheon multi-purpose ballasts.
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- 1999 to 2007 Cumulative Index
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| On The Cover: Danial Stocks, Australian
microwave tube expert, visits Ron Lawrence and his "Radio
Heaven" display in North Carolina |
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| Volume 10, Number 2 - April,
2008 |
- DuMont Cathode Ray Tubes: 1932-42
A succinct description of DuMont's first decade of CRTs
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- Could This Be the WE 712?
A radar tube expert makes a good case for identifying a putative
WE 712A.
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- The 4-400A, Your Results May Vary
Period reports of problems with the Eimac 4-400A.
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The Radar Man
A nifty WWII vintage bit of poetry.
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Illuminating Your Tube Collection
Some ideas on displaying tubes with lit filaments.
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Status of Type 6080WA
An in-house RCA flyer to salesmen explaining the shortage of
supply of this type in late 1956.
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- Weird Tube of the Month: The 7C22
An unusual Western Electric twin triode metal cased oscillator.
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- Elman Myers' Resume
A large grain of salt is necessary to swallow the circa 1966
resume of this early tube manufacturer.
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- Pros and Cons of Self-Service Tube
Testers
A reprise of an article originally appearing in the February
1956 issue of The Philco Serviceman.
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- RCA's Orphan 91
The "scoop" on this rare RCA mercury thyratron.
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| On The Cover: The Western Electric
7C22. |
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| Volume 10, Number 3 - June,
2008 |
- Tube Auction Results - Carolinas Chapter - AWA
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- Another Weird Tube - The "Mini-Loktal"
An odd Tungsram series designed to compete in the loktal market.
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- A Tale of Two Camera Tubes
A description of the operation, development, and differences of the Farnsworth image disector and the Zworykin iconoscope.
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Eimac's Wartime Serial Numbers
A letter from the boss himself elucidate the meaning of their serial numbers.
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Weird Tube Of The Month - The A4444
A RCA UHF developmental pentode with the grid out the top.
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Selling More Tubes
More tricks of the trade from the February
1933 issue of Service.
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- Signal Corps Tubes - A 1931 View
A 1931 Signal Corps list show which tubes they actually used.
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- RCA Radiotron Sales Manual
A detailed internal RCA training manual ca. 1931.
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- The Triad Type 30S
A 30 with a top cap designed for transmitting use - from a 1933 Triad pamphlet.
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| On The Cover: The Eimac X-8 triode of July 1942. One of many prototypes leading to the 527 power tube. |
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| Volume 10, Number 4 - August,
2008 |
- Development of the "P" Tube (VT-3)
Western Electric memo from 1918.
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- A 1950 Audiophile View of Tubes
A note on the quality of receiving tubes from 1950.
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- Review: The Tube Guys
Microwave tubes and their makers. Reviewed by Ludwell Sibley.
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The First RCA Experimental, Developmental and Production Transistors.
A list of RCA numbers compiled by Joe Knight.
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The Additron: A Binary Full-Adder in a Tube
Early tubes developed for digital-computer applications.
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Wierd Tube of the Month - The 6793
A vacuum relay from 1957.
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- Eitel and Armstrong Work Together
The transcript of a WWII conversation between Bill Eitel and Major Armstrong.
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- Pruning the Product Line
Removal of Manufacturing Responsibility for 13 Tube Types.
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- The Tubster and Friends
Home-constructed solid state replacements for popular tubes.
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- Restoring Magic-Eyes - Sadder But Wiser
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| On The Cover: The rare and prestigious Western Electric / Signal Corps VT-3. |
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| Volume 10, Number 5 - October,
2008 |
- Radio Rescue
A book review by Jim Cross.
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- Construction of a Vacuum Tube
A translation of an exerpt from Wireless Telegraphy for Amateurs ca. 1923.
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- The Sheldon 6S78
A "beefed up" version of the 6SN7GT.
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Preferred tube Types
The Answer to an Old Problem
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Wierd Tube of the Month - The 8428
A five-stage secondary emission electron multiplier.
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More on "Export" Tubes
Mofified standard tubes for the export market.
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- The Triad T-10S
New Tubes Prove Big Boon to Amateur Radio Transmitters.
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- Tube-Base Materials and Construction
Base Nomenclature Material Identifying Letters.
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- "Replace All Tubes"
The Radio Service Man, May 1931.
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- "RCA Standards for Pinouts"
RCA's attempt to standardize tube development.
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| On The Cover: Lee De Forest and Roy Weagant "When Grid and Gridless Meet". |
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| Volume 10, Number 6 - December,
2008 |
- TCA Board and Membership Meeting, Oct 3 & 4.
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- Further Investigations of the Rectifier - Gammatron
Tests on the 6X4W Tubes for Gammatron Operation.
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- The Triple Twin and Dynamic Coupling
A reprint from Radio Age.
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- Farnsworth's Cold-Cathode Electron Multiplier Uses Neither Grid Nor Filament
A reprint from Radio, October 1934.
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Wierd Tube of the Month - The 5TV4
More output than the 5U4G for TV Applications.
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The Elusive Lestron
A 110 volt AC/DC receiving tube. No A or B Battery Needed.
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Tube Testing - And You Want Consistency
Plotting Tube Test Results.
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- Low - Voltage Tubes - The 6AJ5
Tubes Designed For Operation At 28 Volts.
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- RCA Factory Codes - An Expansion.
RCA Plant-Identifier Codes.
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| On The Cover: Removing sealed-off tubes from a small Sealex machine at the De Forest Radio Co. plant in Passaic, NJ, about 1931". |
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| Special Publication No. 14 - August 2008 |
| EIMAC's MAGIC BOOKS |
| In the patent-department files in the Permam-Eimac archive are two old-fashioned ledger books, of the cloth-covered style with prenumbered pages. Labeled "Raytheon Royality Book" they carried hand-written notations of about 6000 tube sales. A great running history of the first years of Eimac. The ledger material is suplemented with period data and photographs. It is dedicated to the late TCA member Lane Upton. |
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| Special Publication No. 15 - October 2008 |
| The RJ4 Detector and the Wallace Mystery |
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| This booklet originally appeared in 1978 as Antique Wireless Association Monograph (New Series) No. 1. It has been out of print for a long time, but is an important work by Gerald Tyne who had excellent research resources and personal contact with major individuals from the "wireless days". |
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