- T -

Taylor, A. Hoyt

Radio Hist. Note, by E. Lyons, Aug91: 1; Oct92: 1

Technical manuals - See Manuals

Tektronix

Adventures with a Curve Tracer, by A. Douglas, Sep97: 9

Television Collecting

The Baird Televisor, by R. Kron, May93:5

Does Your TV Have the Wrong Size Picture Tube? by B.

Belanger, Jun01:8

Televisions and TV Collecting, by Harry Poster, Nov88: 12

What About Old TV Sets?, by Joe Koester, Dec87: 8

Television History

The 1932 RCA Field Test TV Receiver, by J. Lendaro,

Apr95:1

David Sarnoff and Television, by B. Belanger, Feb01:8,

Follow-up, Apr01:14; May01:13

Early Television Concepts - Visual Broadcasting (reprint

from 1931 Gernsback Encyclopedia), Sep95:1

More on Early Electronic Television Receivers, by L.

Sibley, May96:1

“Other” Televisions at the New York World’s Fair, by

J. Lendaro, Nov95:1

Television “Attachments,” by J. Lendaro, Oct96:1

Tesla, Nikola

New Tesla Material Available, Feb95:11

Test Equipment (see also curve tracers, VOMs, oscilloscopes,

tube testers, etc.)

General Radio 1307A, by G. Symonds, Aug90: 13

Jewell Pattern 444 Set Analyzer, by G. Symonds, Sep90: 5

Low Tech Test Equipment Troubleshooting, by A. Douglas,

Mar00:9

The ME-297/U or AN/USM-223 VOM, by A. Douglas,

Mar92: 5

Outfitting Your Bench - Another View, by

A. Douglas, Nov98:7

A Power Control and Monitor for Your Electronic Bench, by

C. Rhodes, Mar99:11

A Very Low Current Continuity and Leakage Tester,

by C. Marshall, May91: 9; correction, Jun91: 8

Theremin

My Encounters with the Theremin, by L. Greenough,

Jul94:13

Note on Leon Theremin’s death, Dec93:12

Theremin Movie, Oct95:16; Mar96:3

Thomas, Robert (Bob)

Beams, Enigma, and the Coventry Myth, Jan01:9

When Rails Met Radio, Oct95:15

Thorola

Ad reproductions

Horn and cone speakers, Feb85: 1,3

Models 3 and 4 horn speakers, Nov87: 9

Thurber, James

Daytime Radio, James Thrruber, and the Soaps, by E. Lyon,

Mar97:5

Time reports on radio circa 1915, May86: 8

Timmons - Ad Reproduction - Cone speaker, Dec89: 17

Tinkertoy (Project Tinkertoy)

A Followup to Project Tinkertoy, by A. Douglas, Mar94:3

A Lucite Radio Made with Tinkertoys, by E. Lyon, Nov93:1

Tobe - Ad reproduction, Model 35H communications

receiver, Aug96:16

Toggle switches - See Switches

Tom Thumb - See Automatic

Tone Control

More on Sprague's Tone Control, May92: 8

Tower - Ad Reproduction - Scientific Headset, Jun90: 9

Townsend - Ad Reproduction - B-eliminator, Mar92: 12

Trade Name Index, Aug89: 13

Transformers (See also, Restoration Tips, Transformers)

AF transformer substitution, Nov85: 7

Audio transformer repair, Nov92: 12

Buzzing noise - repair, May88: 26

Color codes for power & IF tranformer leads, Jan87: 14

Core Saturation in Audio Interstage Transformers, A

Sequel, by G. Symonds, Dec90: 13

Depotting & Repotting Transformers, by F. Kohl, Nov84: 4

Fixing A Bad Transformer, by E. Brady, Dec98:13

Isolation Transformers, by E. Lyon, Jul96:13; Sep96:16

Low-Cost Isolation Transformers, Jun 97: 7

Replacing Audio Interstage Transformers, by B. Belanger,

Sep90: 3

Transformer Repair - A Personal Experience, by C. Roberts,

Feb99: 13

Unpotting Transformers, by B. Belanger, Jul90: 10

“Victory” power and audio transformers in WWII, Jun95:10

Transistors & Transistor Radios

Anticipating the Transistor, by E. Lyon, Sep96:1: Follow-up,

Sep97: 12

Play it Again, Sam-IV (transistorized tube replacements), by

Nevell Greenough, May89: 7

News of invention of transistor in 1948, Dec86: 6

Repairs of Transistor Radios, Jun01:10

The TR-55 - Sony’s First Transistor Radio, by L. Sibley,

Dec98:1

What Have We Here? (Early transistor?), Mar01:11

Trent, James D., Jr., submission on early television, Sep95:1

Trolander, Hardy

Cavac and Courier with Kylectron, Jun98:11

More on the Crosley Auto Expressionator, Apr98:6

Tubes (Info., by type listed first, then

alphabetically, by subject)

01A - Tube Characteristics - Play it Again, Sam-IV, by

N. Greenough, May89: 7; Transistorized substitute, by

D. Wilson, Apr92: 1; Update Aug92: 1

1L6 replace with solid state device, Oct98:15

2S (Majestic), replace with 84/6Z4, Feb98:16

2W3 - Replacement for G84, Sep88: 6

4S (Majestic), replace with 84/6Z4, Feb98:16

6A8G - Replace with 6A8GT or 6A8 metal, Oct87: 2

6AL6-G - used in early TVs, Nov95:1;

replacements, May96:1

6E5 - Replace with 1629, Nov84: 5; Faint green display -

restoration tip Nov87: 9; Tidbit, Mar93: 7; Replacing,

Jun 97: 13

6K6 - substitute for 6N6, Apr95:17

6L6 - History, Feb88: 6

6ME5 - Brief information, Sep88: 3

6N6 - replace with 6K6, Apr95:17

6U5 - replacing, Jun 97: 13

35W4 - Reuse when dial lamp section burned out,

Dec84: 5, Replacement, by L. Sibley, Oct94:17

35Y4 - Replacement, by L. Sibley, Oct94:17

35Z5 - Mystery of Type 35Z5 Open Filament, by J. Lowe,

Apr89: 8; Reuse when dial lamp section burned out,

Dec84: 4, Replacement, by L. Sibley, Oct94:17

45 - Substitute for 45 tubes, by F. Esposito, Oct91: 3;

See also, Dec91: 8 follow-up, and Jan92: 7

Transistorized substitute, by D. Wilson, Apr92: 1;

Update Aug92: 1

47 Replacing with 1D4, Feb00:15, Apr00:12

48 - Replacing with 28D7, Jun 97: 14

50A1 replacement - May95:12

71A - Replace with 45, Nov87: 9

807 - History, Feb88: 6

1629 - Replacement for 6E5, Nov84: 5

6146 - Testing in TV-7 tube tester, Jul97:8

G-4S - Testing, Aug88: 11

G84 - Replace with 2W3, Sep88: 6

VT-1 - data inscribed on base, Aug86: 10

WD-11 - Testing, Apr97:16

XXL, XXD, and XXFM tubes, Sep86: 14

Audio tubes, Jun99:15

Audion tube data, Apr91: 6

Blue glow in power output tubes, Mar88: 3

CeCo tubes - history by L. Sibley, Mar95:1

Ceramic tubes (Project Tinkertoy)

A Followup to Project Tinkertoy, by A. Douglas, Mar94:3

Characteristics of Early Vacuum Tubes, by J. Lowe, Feb98:1

Cleaning hint, Feb85: 5

Cleartron Multivalve, Sep98:11

Comments on New Tubes from Europe, by O. Parker, Jul96:4

Cross reference - military VT vs commercial equivalents,

May87: 7

European Tubes

European Brand Names, by L. Sibley, Aug96:1

Source of supply, Feb99: 16

Filament continuity testing--warning, Apr89: 5

Gas in tubes

Ridding tubes of gas and restoring them, Sep85: 6

Gassy tubes - checking for, Sep87: 5

“German” Tubes by Western Electric by L. Sibley, Mar97:12

Getters - All About Getters, by B. Belanger, MAARC

Monograph #1, May87; Follow-up info. on early

gettters (L. Peckham), Aug87: 8

Industrial tubes (4-digit types, by T. Hannah), Apr91: 12

The Intermittent, by H. Olson, Mar96:12

Loctal Tubes

Unlocking the Loctal Code, by T. Hannah, Nov90: 7;

corrections Dec90: 12

Magic Eye Tubes

6ME5 tube, Sep88: 3

Faint green display/ no display - restoration tip, Nov87: 9

Increasing brightness, Jul97: 15

Repairing inoperative eye tubes, Jan85: 3

Replacing 6E5 with 1629, Nov84: 5

Replacing 6E5 and 6U5, Jun 97: 13

Those Cool and Limpid Green Eyes, Mar88: 12

Tidbit on 6E5 vs 6U5, Mar93: 7

The Unblinking Eye, Apr92: 13

Magnatron brand tubes - ad reproduction, Feb92: 17

Majestic tubes, Jul95:8

Manufacturers’ codes, Aug93:10

"M-R" Designation, Aug91: 11; Oct91: 14; Oct91: 17

Multigrid tubes and the depression, Sep85: 4

The Mystery of the Sound X/TRA Tube, by J. Lowe,

Jul94: 8

National Union - history, May88: 6

Navy receivers - tubes used in early Navy receivers, Feb92: 1

New tube book available, Jun99:16

Nuvistors - Swan Song of the Vacuum Tube, May88: 19

Follow up, Jul96:11; Oct96:16

Radioactive Isotopes in Tubes, Nov89: 3

RCA - development of Radiotrons, Aug85: 5

Reading faint tube number markings, May88: 26

Rejuvenation of weak tubes, Jul85: 13, reprinted, Aug96:9

Shielding metal tubes in Philco & Zenith sets, May87: 17

Shields, tube, Sep98:12

Sodion tube - See Sodion

Sparton tubes - technical data, Jan88: 6

Substandard tubes produced during WWII, Oct84: 3

Substitution of tubes:

27, 37, 77, and 78, Jan86: 8

45, Oct91: 3; Dec91: 8; Jan92: 7

Four-digit industrial types for regular tubes, Apr91: 12

Interchangeable types, Feb91: 7

Making Do in World War II, by T. Hannah, Jun95:10

Military VT type vs commercial types, May87: 7

Power FET Replacements for Antique Radio Tubes, by

D. Wilson, Apr92: 1; Update Aug92: 1

Transistors for tubes - Play it Again, Sam-IV,

by N. Greenough, May89: 7

Tube Substitution Hints, May92: 5

Testing Tubes

More on Testing Tubes in Bulk, by S. Fick, Oct93:13

A Tester for Early Battery Set Vacuum Tubes, by G.

Symonds, MAARC Monograph 2, mailed with

March '91 issue

Testing Antique Vacuum Tubes Without an Antique

Tester, Mar88: 8; see also additions/modifications to

above article, May88: 13

Testing Tubes: Another Approach, Sep85: 6

Testing Tubes in Bulk, by L. Sibley, Aug93:10, Dec93:12

Testing Tubes that Aren’t on the Hickok Roll Chart,

May97: 8

Testing WD-11 Tubes, Apr97:16

Tube Tester Topics, by A. Douglas; Part 1, Sep95:1;

Part 2, Oct95:1; erratum on Part 2, Nov95:6; Part 3,

Nov95:6; Part 4, Mar96:7; Part 5, Jul96:6; Part 6,

Nov96:12; Part 7, May97: 6, Part 8, Jul97: 8

Vacuum Tube Leakage Tester, by A. Douglas, May95:8;

When Tube Testers Disagreee, May98:10;

correction: Jul98:15

Tetrodes: Not Quite Tetrodes, by E. Lyon, May00:7

That Radio Has HOW Many Tubes?, by E. Lyon, Jan00:10

Triode tubes as rectifiers, Aug93:16

Tube Amplifier Distortion, by J. Reid, Sep94:1

Tube Lore: 100-mA AC-DC Tubes, by L. Sibley, Jan96:1

Tube Lore: Identifying Metal Types, by L. Sibley, Jun98:3

Tube Lore: Identifying Portable Radio Tubes, by L. Sibley,

Aug98:6

Tube Lore: Identifying Those Early ‘30s Types by L.

Sibley, Apr97:1

Tube Lore Supplemental Data, May01:11

Tube Lore: The Wunderlich Detector, by L. Sibley,

May 97: 11

Tube Manufacturing at Tung-Sol in the 1950s, by

S. Kalista, Aug94:9

Tubes vs. Transistors, by B. Belanger, Sep93:3

Tubes vs. Transistors-Redux, by R. Warren, Sep93:4

Vacuum Tube Manufacturing Returns, by B. Belanger,

Jul94:10

“Western Electric” Tubes: An Apparent Revival, by L.

Sibley, May95:13

Western Electric Tubes Available Again, by L. Bassett,

Jun95:5

What Price Radio Tubes?, by T. Hannah, May 97: 9

Where are all those tubes going? (Japanese buyers), Feb85: 4

Wunderlich Tubes - See separate listing under W

Turn-it Variable Grid Leak Resistor

Ad Reproduction, Mar88: 13

Tungar Bulbs - Ad reproduction, Feb97:13

Tung-Sol

Tube Manufacturing at Tung-Sol in the 1950s, by S.

Kalista, Aug94:9

Tuning - evolution of tuning schemes, May87: 15

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