Brandes Radio Instructions for Model B-16 An interesting example of an early radio instruction booklet complete with guarantee cards and a separate 'Letters Patent Trade Marks and Copyrights' booklet. (2.17mb)

May 1956 'Consumer Reports' 20th. anniversary issue Partial scan includes their first ratings of transistor radios (NOT good!). Rating of Hi-Fi pickup arms and a retrospective of 1936 from a 1956 perspective are also included. (5.86mb)

'How To Choose A Radio' Booklet from Stromberg-Carlson (~1930) This booklet contains a good deal of info about radio design. There are many pictures of Stromberg's radio plant in Rochester, NY. plus pictures of their telephone equipment. (7.66mb)

Meissner 1939, 1947, 1948, and (partial) 1952 catalogs It is hard to pin a label on Meissner. They made RF coils primarily but they also made test equipment, radio and television kits, disc recorders, and some Hi-Fi gear too. (21.66mb)

Radio of Today and Tomorrow 1922 essay by David Sarnoff discussing current and future radio uses. (3.06mb)

1930 Series Zenith Radio Receivers Small brochure with info and pictures of Zenith console models 52, 53, 54, and the super deluxe 55 that included a remote control! (1.15mb)

'Altec-Lansing High Fidelity Home Music Systems' (1956). Altec home audio equipment catalog for 1956 with pictures and specs. Some water damage but very readable. (4.89mb)

Audio Record 1956-1957 Tape Recorder Directory Audio Record was a magazine produced by Audio Devices, a manufacturer of audio tape and recording discs. This issue is a directory of 1956-1957 tape recorders with pictures, info, and specs. (6.06mb)

Brush 'Sound Mirror' 'Magnetic Ribbon' recorders (1949) Very early tape recorder brochure. Included are spec sheets for models BK-411 and BK-414, an ad aimed at educators, a 'Sound-Tips' newsletter, and a Brush BA-106 mic spec sheet. (5.09mb)

CD-4 Handbook (~1974) 'A discrete point of view about the quadraphonic eveolution'. A discussion of the early 1970s attempt at surround sound that wasn't quite ready for the market or available recording technology. (5.20mb)

'GE High Fidelity Components' (1954) General Electric HiFi catalog with their limited but interesting line of equipment. Two additional product flyers for the famous VRII and VR-22 phono cartridges plus some pro-speaker lit are included. (7.02mb)

'High Fidelity' - Some new slants, technical and otherwise, on a controversial subject (1945) Reprint of a 1945 article by A. C. Mathews from the Nov. 1945 'RADIO' magazine discussing the state of period audio art from many perspectives. (2.65mb)

Operadio 1937 Catalog Operadio started out making radios in 1922. By 1937 there were a PA equipment manufacturer. They changed their name to DuKane in 1951 and are still going strong. They even have a history timeline on their website. (6.08mb)

Stromberg-Carlson Public Address Equipment Catalog (1956) Lists S-C manufactured audio amplifiers and intercom systems plus microphones and speakers that were made for them by others. Also included is AU-42 amp service data. (4.47mb)

Collins Broadcast Ads & Flyers (~1959) Small file including late 1950s broadcast consoles, AGC amplifiers, and limiters including the famous BA-6A limiter. (4.65mb)

Gates Radio Equipment Ads (~1958) Various Gates radio ads and brochures for turntables, consoles, remote gear, and audio processing. Broadcast types will like this! (16.78mb)

1955 Gates Audio Equipment Catalog No. 81 Complete 68 page catalog covering recording and studio broadcast equipment including consoles, limiters, remote equipment, and a 'Sound Wagon' for radio sound effects. (13.14mb)

General Electric Broadcast Ads & Info (1959) Included is a 'Broadcast Transcription' equipment flyer, pro-HiFi speaker data, ads for limiters and AGS plus data, console info, and a very early automation programmer. (11.36mb)

RCA Broadcast Audio Equipment (1962-64) Includes most of the 1962 RCA Audio Catalog (less only the boring stuff) plus additional microphones and other equipment. Appended with the full 1964 audio price list and microphone rebuilding price sheets. (36.48mb)

'Who Wants To Buy A Buggy?' produced by FM Broadcasters, Inc. (~1941) Booklet designed to introduce radio dealers to the virtues of FM broadcasting, how to sell FM radios, and which radios to sell from a technical perspective. (1.64mb)

'FM Radio - The Frustrated Medium' (1956) A generally positive report on the state of FM broadcasting by the NYC Maxon Advertising Agency. Includes listings and info about FM station in markets of 25K or more. (3.75mb)

DuMont TV & Collins Radio Station Planning Guides Whether your looking to build that new AM daytimer, a DuMont UHF TV station, or even one of those FM stations that no one much wants, you can zoom in on the costs to build it using these guides! (6.06mb)

Radio & Television News Feb. 1950 Articles Includes articles about making radio transcriptions, the new WOR-TV in New York, and new Mount Wilson FM & TV 'antenna farm' in Los Angeles. Hallicrafters, Eico, and RCA TV history ads are also included. (8.42mb)

Rayner's Guide - Selling By Radio (Fall 1931 Edition) Evr wonder what radio advertising costs? The cost to advertise on most US radio stations in 1931 is contained in this booklet. There is also an interesting ad for KFBI in Milford, Kansas too. (3.77mb)

'WLW - The Nation's Station' Article from the Nov. 1967 issue of Broadcast Engineering with period and historic WLW photos. Several vintage radio equipment ads from this issue are attached too. WLW is still an important 50kW station. (4.46mb)

'WWJ - The Detroit News' (1922) The story of 'radiophone' station WWJ from August 1920 till 1922 and its owner, 'The Detroit News'. Instuctions on how to listen and building receivers is included. Today 50kW WWJ is Detroit's primary news station. (13.73mb)

US Department of Commerce 'Commercial and Government Radio Stations of the United States' (1920) A complete guide to US radio stations just prior to the advent of broadcasting. Includes a list of stations received by this books original owner. (22.05mb)

'Radio Broadcasting Stations Bulletin No. 1' (~1922) Published by Progressive Radio Company of Philadelphia, this little log lists US and Canadian stations by call sign only with city and frequency in meters. (0.41mb)

'The Philadelphia Record Radio Log' (~1924) This log published by 'The Philadelphia Record' lists US and Canadian stations with the frequency in meters and station ownership. (4.01mb)

Stevenson's Bulletin of Radio Broadcasting Stations (Feb.1925) This is only the second issue of this log which later became White's Radio Log. In addition to very complete listings, there are interesting articles about broadcasting and amateur radio. (4.75mb)

'The People's Radio Log' (~1925) 'The People's Radio Log' was published by People's Outfitting Co. a 'radio and Victrola store' in Rochester, NY. Stations are listed by call and by location with frequencies in meters. (2.92mb)

'Newark Evening News Radio Log' (1927) This is an extensive log with US stations listed by call, location, and frequency with ownership info included. Listings by location for all stations worldwide is included too. (11.92mb)

'Radio Listeners Red Book Magazine' (Fall 1927) Above average log with listings for the US, Canada, Mexico, Cuba, and Haiti. Ownership and power levels are included with a nreakout section for under 100 Watt stations. (9.77mb)

The Blue Radio Log (1928) Lists calls, frequency (kcs & meters), ownership, and times on the air. The new NBC and CBS 'Chain Programs' schedules are included. The DOC purged many US stations shortly after this log was published. (9.82mb)

Crosley Radio Maps and Log (~1930) Very competent log that was produced by The George F. Cram Co. It was sold under their name and through third parties such as Crosley. Lists very early mechanical scan TV stations too. (7.28mb}

RCA Radiotron Radio Log (1931) US, Canadian, Mexican, Cuban, and Central American stations with many radio star pictures and biographies. There are some interesting RCA ads too. (7.22mb)

'Radio Stars And Stations' radio log (1932) Eddie Cantor graces the cover. His bio plus many more all fantastically illustrated by Rundle punctuate the station listings. From Cunningham Radio Tubes. (10.77mb)

'Around the World with Tung-Sol' World Radio Log (1935) Great little log with all US, North, Central, and South American AM stations listed in addition to extensive shortwave and US television station listings. (5.58mb)

'Around the World with Tung-Sol' World Radio Log (1939) Very similar in format to the 1935 Tug-Sol log listed above except updated for 1939. Includes full worldwide Shortwave listings plus TV, facsimile, and US AM stations over 100 Watts. (5.77mb)

RadioTravel-Log (1939) This log has articles and listings for SW stations plus police stations in addition to US and North America AM stations. From Cunningham Radio Tubes. (8.30kb)

General Electric 1941 Radio Log 1941 was a pivotal year for AM broadcasting as the band was repackaged with 883 stations changing frequencies on March 29. This log includes 'all the new station frequencies' and 'domestic and foreign station listings'. (3.21mb)

Tung-Sol 'Dial Locations For United States Stations' (1941) Interesting log with facsimile, television, and 'high frequency broadcast stations' (FM) listings. There is an excellent article about FM radio on the last page that is quite prophetic! (3.99mb)

Allied Radio 1933 Catalog Full, very art deco 84 page catalog with Knight radios, PA equipment, test equipment, parts, and other neat early high tech electronics! (33.65mb)

Allied Radio 1940 Catalog Complete 172 page Allied Spring-Summer 1940 catalog. All of the goodies are here as is the format that probably, to some degree, still exists. The very first Knight-Kits are in with the 'new' first generation Ocean Hopper! (53.05mb)

The Barawik Co. 1927-28 Catalog Barawik made 'Marvelo' radios plus sold other brands and parts. A caracature photo of Barawik's founder, A. O. Braun, is appended to this early 132 page catalog. This scan is very difficult to read in places. (49.99mb)

Chi-Rad Handbook-Catalog (~1923) Contains general information and construction projects such as 'The Reinartz receiver' in this issue. Parts and radios from Amrad, Kennedy, Western-Electric and others are listed. (10.59mb)

Cray Brothers Flyer (~1922) Cray Bros. of Cleveland sold very early radios, auto accessories, and wagon wheel kits! An interesting thumbnail view of the crossing technologies of the early 1920s. (5.72mb)

Goldentone 1935 Catalog Goldentone made and sold radios. It was one of many smaller companies that marketed direct to the public. Schematics for the model P, PA, PB, PF, U, V, and W models are included as is additional advertising literature. (11.05mb)

Early 1920s F. D. Pitts Company Catalog This 22 page catalog offers many radio components plus complete sets from Grebe, DeForest, and others. (3.11mb)

1937 Radiolek Radio Catalog Radiolek offered many nice wood radios including the 'Stratosphor'(!), PA equipment, parts, and 'Everything in Radio'. We have eliminated only many of the parts pages in this 83 page partial scan. (37.14mb)

1934 Radio Trading Co. Catalog No. 27 Radio Trading Co. was Hugo Gernsback's distribution company. This is very much a hobby oriented 106 page catalog with projects related to his magazines such as Doerle receiver kits. A big scan with small print. (52.69mb)

Sears, Roebuck & Co. Catalog Pages (1927) Radio, phonograph, and record pages from the 1927 Sears catalo. Prominently featured are both their WLS radio station and the 'Worlds Largest Store' logos and trademarks. (16.90mb)

Allied Radio Christmas 1960 Flyer This flyer lists all of the good stuff that any 1960 'techie' would love! Be it a new ham rig, a transistor radio, Hi-Fi gear, or the latest Knight-Kit, it's all here! (16.58mb)

Heathkit Winter Flyer (~1953) Heathkit pre-Daystrom era flyer with the beginnings of Heath's audio line and the roots of the ham radio line. The Heathkit educational division is still going strong today! (5.04mb)

Heathkit 1954 Catalog This 40 page catalog is one of Heath's earlier annual catalogs. They were still primarily a kit test equipment company but a growing line of audio and ham radio equipment is represented. (17.71mb)

Heathkit 1956 Summer Flyer What could be more fun than taking the family on a picnic at the old atom bomb test site? With the new Heathkit RC-1 Radiation Counter you can do it safely! Other cool stuff awaits inside. (5.33mb)

Heathkit 1958 Flyer Heathkit flyer from the Daystrom era with many of Heath's classic audio and early ham radio items represented. "Heathkits are the Greatest"...take it from the man in the street!" (6.93mb)

Heathkit 1961 Flyer 44 pages of Heathkit electronic goodies including 4 'closeout' pages and a fairly diverse offering overall! FM stereo will be here on June 1, 1961. Details are on the back page. (17.4mb)

Heathkit 1969 Catalog Complete 116 page Heathkit catalog from the year man landed on the moon. From radios to organs and everything in between, Heathkit had high quality and hi-tech covered in kit form! (59.30mb)

Heathkit 1972 Summer Catalog A mini-bike, car stereo, a digital calculator, digital frequency counters, and other cool stuff awaited the adventuresome kit builder reading this 1972 catalog! (28.31mb)

Newark Electric Catalog NC-50 (1950) Newark later bacame a large electronics supply house but this catalog a lot more fun! That's because it was aimed at the consumer with television, hifi, test equipment, and ham radio gear being well represented. (16.47mb)

1955 World Radio Laboratories (WRL) Catalog Leo Meyerson, W0GFQ made Globe ham radio transmitters and sold ham gear. WRL also sold a full line of audio and test equipment plus parts and supplies. 58 of 138 pages are here with the parts omitted. (17.04mb)

Cute, small book for children, 'A Trip Through Radio Land' from WIP radio (~1932) 'Timothy Tube' takes you on a quick tour, in poetic form, from the radio to the transmitter and studio with several examples of radio programming. Written by John Martin. (2.33mb)

'Getting Aquainted With Receiver Servicing' (1945) This 'Sample Lesson' from The National Radio Institute (NRI) is a great first step to understanding tube radios and their repair. (7.34mb)

How to Train at Home AND 'Win Rich Rewards In Radio' (1942) This attractive 65 page booklet from The National Radio Instisute (NRI) describes their correspondence course in detail with many examples of how to use your training. (30.89mb)

'How Electronic Tubes Work' from General Electric Very nice two color, heavily illustrated, educational booklet explaining vacuum tube technology. If don't know what a Kenotron, Pliotron, Phanotron, or Ignitron are, you may want to take a look! (5.67mb)

'How To Have Fun With Radio' (1938) This booklet is volume No. 6 of Gernsback's Educational Library. It describes many fun radio parlor tricks that you can do with your radio! (4.69mb)

'How To Read Radio Diagrams' (1938) Volume No. 7 of Gernsback's Educational Library. This still very useful booklet that teaches you how to schematic diagrams. (4.95mb)

'Simple Electrical Experiments' (1938) Gernsback's Educational Library No. 9 describes many still fully applicable date electrical experiments. A very useful book for individual or group use. (4.87mb)

'Television' (1938) Gernsback's Educational Library No. 10 is all about television. Both mechanical and the 'new' electronic systems are explained. Hugo Gernsback was a big promoter of television in his many publications. (5.48mb)

'Rip Discovers Radio' (1930s) This radio story booklet which is aimed at older children and adults has Rip Van Winkle waking up and learning about all aspects of radio technology. Published by RCA. (2.50mb)

'The Magic of Communications - A Tell You How Sory' (1932s) This Bell Systems booklet nicely presents electronic communications history and explains how the phone system, radio, and broadcasting work. Includes excellent pictures and illustrations. (11.03mb)

Roto-Beam & Mims Radio antenna flyers Roto-Beam and Mims Radio Co. made high quality antenna rotors plus Mims made 'Signal Squirter' beam antennas. It is interesting to see how these antennas and rotors were made. What may seem boring isn't! (3.48mb)

Two Gonset flyers are included in this file They include mobile converters, the 'Communicator' portable transceiver line, the 'Commander' transmitter, Signal Slicer, and a few commercial products. (3.05mb)

Pierson KP-81 receiver product flyer The Pierson KP-81 was a high quality ham communications receiver that is also known as one of the heaviest ever made! It was made in the late 1940s. They are quite rare today. (1.58mb)

Group of RME product sheets Included are info sheets for the DB-22A Preselector (pictured), the VHF 2-11 'Compact' AM/FM VHF receiver, NBF-4 NBFM adapter, MB-3 'Boomerang', and the MC-53 VHF and MC-H4 HF mobile converters. (3.03mb)

Temco Series RA Radio Transmitter detailed product info and price sheet Included is 14 pages of info on this high quality, modular, later 1940s, and quite rare 150/250 Watt transmitter. Also included is a detailed price sheet from 1947. (21.25mb)

VHF ham equipment flyers (~1946-1973) Includes early Abbott TR-4 and TR-4B transceivers, Amplidyne featuring the 621 transmitter, Deltronic CD-144 Civil Defense transceiver (pictured), and the introductory flyer for the Regency 1970s 2 meter line. (5.32mb)

'Ghost Town News' Dec. 1942 Partial scan with articles about Los Angeles radio personality Fred Forrest, Gene Autry, 'The Great Gildersleeve', and Walter Cameron. Other included articles including one about Walter Knott's 'Ghost Town'. (6.07mb)

Gracie Allen's Gift To Guy Lombardo (1933) A zany Burns & Allen script except. This booklet from General Cigar Co. promotes Guy Lomardo, Gracie Allen, and George Burns as 'The Stars of the Robert Burns Program'. Illustrated by Louis G. Fernstadt. (2.29mb)

Lillian Gordoni Radio Productions (1940) Women played an important part in early radio. This catalog of radio production and talent is one good example. It also shows how radio programming worked at this mainstream Chicago radio booking agency. (4.91mb)

'On My Way' By Fred Forrest (1933) Fred Forrest was in the stove business and was known as 'The Stove-Poker Philosopher' on his LA radio show. This book excerpts stories his program about family, business, relationships, and his show. (16.19mb)

Kelvinator Presents The Original 'Professor Quiz'...and his Quizzical Questions' (1937) All about Professor Quiz, how to play the game, many questions, plus Nash and Kelvinator ads. (3.20mb)

'Stars Of Radio' is a short booklet with many short radio star biographies. (3.70mb) It is brought to you by Ala-Seltzer (learn how to take it!) and Dr. Miles cures for most everything else! (9.15mb)

'Behind The Mike' With KMA (1926) KMA and KFNF were owned by seed company magnates Earl May and Henry Field. They competed for customers and listeners for years. KMA ('Keeps Millions Advised') is still on the air and owned by the May family. (6.04mb}

'WLS Family Album 1931' This was WLS second annual album. It contains pictures and bios of the management and the performers. There is a very good 1931 radio log for all stations included too. (15.53mb)

'WLOW Album (1947)' WLOW (1230kc) was actually licensed to Portsmouth, VA. They had been on the air under one year when this interesting look at a small independent station was published. Gospel formatted WPCE is now on their frequency. (14.54mb)

'WSGN Album (1947)' WSGN (610kc - 'South's Greatest Newspaper') was Birmingham's second oldest station and the NBC Blue affiliate in 1947. By 1955 they were Birmingham's first Top 40 station. Today they are Gospel formatted WAGG. (14.69mb)

'WWVA 20th. Anniversary Family Album 1926-1946' Yearbook featuring 50kW WWVA performers and staff with many studio and transmitter equipment views. The towers pictured all collapsed in a storm in 2010. (10.58mb)

Croflex Tuners by Croname of Chicago If you had a radio design and needed a dial, Croname was a place to go. A product sheet for 'The Radio Craftsmen' RC-8 AM-FM tuner and RC-2 amplifier is also included. (2.42mb)

General Radio Parts Bulletin 924 (1926) Even those of us who collect old electronics might not always call parts 'beautiful' but in a tech sense G-R parts were. This catalog does have notable damage. (5.52mb)

James Millen 1948-49 Component Parts Catalog Millen made incredibly high quality RF components for the highest quality receivers and transmitters. This catalog is nicely illustrated and includes the complete price list. (10.24mb)

'RCA What It Is..What It Does' (1949) This RCA booklet that provided 'answers to questions often asked' about the 'World Leader in Radio - First in Television' now offers an historical view of RCA's business and it's accomplishments. (16.04mb)

Sperry Gyroscope Company 50th. Anniversary (1960) Elmer Sperry was the inventor of the gyroscope. Without it, air and ship travel would be quite unpleasant. This is his story and that of his company on it's 50th. anniversary. (11.06mb)

Component Color Codes & Electronics Data File Complete capacitor, resistor, and transformer wiring color code info plus electronics data of interest to restorers. From GE Broadcast, Riders, and the Allied Electronics Data Handbook (1966). (5.25mb)

Radio Retailing's 'Tricks of the Trade' Third Edition (1937) Extensive, brand and model specific 'hints and kinks' type book for home and auto radios with general reference charts, tube socket and Voltage info, and auto ignition diagrams. (25.26mb)

SAMS 'Dial Cord Stringing Guide Vol. 1' Broken dial cords are always a problem! This guide covers most radio models from 1938-1947. As with our other files, this one is searchable, so finding your model is easy! (13.51mb)

Stancor Replacement Transformer Guide and Catalogue (1939) This guide lists replacement transformers for most radios made in 1939 or earlier. It is also a transformer guide. Fully searchable using your browser! (13.51mb)

Allied Electronics Data Handbook Tube Substitutions (1966) Complete 'Directly Interchangeable Tubes' guide from this excellent book. Many other pages applicable to restoration are included in the 'Color Codes' file above. (3.71mb)

RCA Tube Substitution Directory For Emergency Servicing of Civilian Receivers (1944) WWII substitution guide that goes a lot further than some later guides. Potentially very helpful info especially for subbing rare tube types. (5.01mb)

Rider 'Tube Caddy Tube Substitution Guidebook' (1960) Abbreviated 'Direct Substitutions Only' version of the massive Rider's Tube Substitution Guides that are also listed in this section. (4.65mb)

Rider Tube Substitution Guide Book - 2 Parts (1950)
Part 1: Tube substitution related electronics theory and servicing suggestions. (9.6mb)
Part 2: Full, searchable, 114 page receiving tube substitution guide. (15.56mb)

Rider Tube Guide Third Supplement - 2 Parts (1958)
Part 1: 30 additional searchable pages of tube substitution data. (5.04mb)
Part 2: European/American - American/European tube substitution guide. (2.10mb)

'INSIDE Story of the $64,000 Question' The story of this infamous 1950s prime time TV game show before its collapse due to extensive rigging. TV and radio rules were changed significantly after this shows 'outing'. All is OK here though. (15.15mb)

Du Mont 'Pioneering the Cathode-Ray and Television Arts' (1941 'This is the story of the first decade of the Allen B. Du Mont Laboratories'. A great history of this famous company in its early days with many pictures and biographies too. (8.47mb)

Du Mont Inputuner early TV tuner product sheets The 'Inputuner' was the name that Du Mont coined to describe their TV tuner. What is interesting here is that these flyers were sent to other TV manufacturers attempting to sell them this technology. (8.95mb)

Farnsworth's 'The Story of Electronic Television' This 1944 color booklet explains television from a Farnsworth perspective. Philo Farnsworth's invention of TV and the image disector tube are explained with beautiful graphics. (8.22mb)

RCA 'Radio Age' Magazine April 1948 This issue is largely about RCA's entry into television with a lead artcle from Brig. General David Sarnoff entitled 'Television Opening New Era'. Other articles include one about RCA's work in FM radio. (11.74mb)

'RCA Aids Industry In Advancing Color Television' (1953) This 28 page booklet describes the development of RCA's electronic color TV system with info about their on going development of transistor TVs and UHF broadcasting. (5.58mb)

1941 Clough-Brengal Catalog Clough-Brengal was an early manufacturer of higher quality radio test equipment. This is an uncommon copy of one of their full line catalogs. (9.37mb)

DeciMeter 'slipstick' Wavemeter & 13cm Oscillator product sheets DeciMeter made at least two interesting and unusual products: a slide rule style VHF/UHF wavemeter and a 13cm oscillator aimed at the ham radio market. (1.29mb)

Du Mont Cathode-ray Equipment Catalog and price sheet (1948) Short form catalog of all Du Mont oscillographs and CRTs. A 10mc, calibrated oscilloscope the size of a refrigerator sold for $5,550! Also included is a flyer for the 208-B scope. (6.74mb)

Two General Radio Condensed Catalogs (1959) General Radio Condensed catalogs from 1959 and the early 1960s. These catalogs feature nice graphics and a pretty good representation of the equipment that G-R made. (2.17mb)

General Radio VHF & Broadcast Equipment Catalogs (1959) General Radio 'VHF-UHF Equipment' and 'Broadcast Equipment Bulletin' catalogs from 1959. Includes VHF-UHF equipment plus broadcast monitoring and test equipment. (6.88mb)

Hickok Full Line 1964 Catalog Included are many of Hickok's famous tube testers including the Cardmatic 123R and 121, 539C, 580, 600A, 752A, and 8000A. Everything else that they made is here too. (10.77mb)

Simpson Test Equipment Bulletin NO. 2064A (1960) Pretty much all of Simpson's famous bakelite VOM meter line is displayed in this catalog. There are also some oscilloscopes and few other pieces of other test gear included too. (4.85mb)

Supreme Testing Instruments (~1930) Small brochure describing Supreme's 'Testing Instrument' line in the later 1920s to the early 1930s period. Supreme Instruments were 'Supreme By Comparison'. (0.93mb)

Stancor Catalog 140H (1948) Full line Stancor catalog for 1948 including ham radio transmitter kits. Attached are connection info for some audio and modulation transformers and plans for a 'Stancor' Williamson HiFi amplifier. (10.22mb)

Thordarson Catalog 400G (1947) Complete Thordarson Transformer Catalog for 1947. Attached are connection and data info for some audio matching and modulation transformers. (10.57mb)

Triad Catalog TR-55 (1955) Triad 'general catalog' for 1955 including audio amplifier kits, audio transformers, as well as all other Triad transformers of the era. (12.05mb)

United Transformers Catalog 530A (1953?) Complete UTC product catalog including transformers, reactors, and filters. Also listed is a 20 Watt HiFi amplifier kit plus some additional circuit suggestions. (8.99mb)

United Transformers Catalog 56A (1956) Complete UTC product catalog for 1956 including transformers, reactors, and filters. Also listed is a 20 Watt HiFi amplifier kit. (11.43mb)

UTC Terminal Arrangement Data (~1952) Terminal arangement data sheets for UTC LS, HA, A, MC, O, PA, S, and some CG series transformers. (5.36mb)

Power Supplies For Transistors By Burgess Batteries Burgess flyer describing their new batteries for transistorized radios and equipment. Nicely illustrated! (4.60mb)

1953 Lafayette 'The Transistor Story' and Early Experimenters Flyer Four page mimeographed letter telling about transistors and the new field of semi-conductors. Also included is a mid 1950s flyer aimed at transistor experimenters. (4.72mb)

Early 1950s Raytheon Transistor Circuit White Sheets (1953-54) Several original and reprint transistor project papers including transistor demonstration circuits, theory, and a regenerative receiver. (7.49mb)

Early Sylvania Germanium Diode and Experimenters Circuits Flyers (~1946) Group of product flyers featuring the famous 1N34 and other early diodes. A booklet of circuits designed by ham operators using these diodes is included. (23.48mb)

Vintage Transistor Flyers and Data Early 1950s product info with many articles from Raytheon, CBS, Texas Instruments, RCA, Transistron, Germanium Products, and GE. Note the G11/A transistor on the one page full line GE diodes page! (11.07mb)

'What's New With The Electron' new Eimac tubes for 1958 There are some very unusual tubes for pulse transmission, microwave, and radar here along with some common introductions that you may have thought came out much earlier. (17.48mb)

Federal & GE Power Tube Care Booklets (WWII era) These booklets discuss power and transmitting tube care. The Federal booklet has many pictures their tube manufacturing plant and the GE one has some great tube cartoons! (8.80mb)

1947 Ken-Rad Receiving Tube Manual with price list A very useful, 42 page manual including most any info needed for vintage radio or audio repair. Fully searchable and the Sept. 1947 price sheet is included too! (13.93mb)

RCA Power & Gas Tubes (1956) Both common and unusual tubes are represented here including RF tubes, rectifiers, thyratrons, ignitrons, magnetrons, and vacuum-gauge tubes. Complete with many pictures too! (8.77mb)

RCA 'Receiving Tubes and Picture Tubes' (1959) Tube characteristics and socket connections for all RCA consumer receiving tubes and TV picture tubes as of 1959. (14.50mb)

RCA 'Receiving-Type Tubes for Industry and Communications' (1960) Tube data and information for number type 'premium', 'special red', 'low-microphonic', 'computer', and other special purpose type tubes. (10.71mb)

RCA 'Storage Tubes and Cathode Ray Tubes' (1964) Nicely illustrated catalog showing most common oscilloscope tubes, some early TV CRTs, plus many very unusual types such as radechons and graphechons. (3.73mb)

1950s Altec Tube Era Catalog Sheets (~1954-60) 110 pages of early Altec post W-E equipment including microphones, amplifiers, consoles, speakers, equalizers, and other pro audio items. (27.63mb}

1966 Altec Catalog Complete 101 page 1966 Altec catalog with index less only some very boring attenuator data. Mostly transistorized gear but some tubes remain. There are many vintage era mics and speakers plus new mics too. (26.77mb}

132 Type Amplifiers Covers 132 A and B broadcast audio program line amplifiers. Four pages with specs. (1.00mb}

633A & 639B Microphones and Accessories Original 633A and 639B studio microphone spec sheets plus a wonderful 'Microphone Acessories' flyer showing available accessories for these famous microphones. (3.14mb)

Elements of Speech Input Systems (Studio Applications) Extensive discussion of broadcast studio design in the 1930s with many pictures plus signal flow and studio layout diagrams. (7.39mb)

FM Broadcast Transmitter Flyer & White Papers Artful FM transmitter flyer plus white papers on 'The Frequency Watchman', 'New Arc-Back Indicator, and 'A Grounded Plate Amplifier'. (4.49mb)

Hickok 531 (WE - KS-13588-L1) Tube Tester & WE Tube Data Hickok 531 (with W-E model designator) tube tester with, most importantly, two pages of W-E tube test data for use with the 531 and, likely, some other Hickcok testers. (5.20mb)

Silicon and Germanium Crystal Rectifiers (1946) Short post WWII flyer discussing W-E's research in the field of crystal rectifiers. I think that this worked out for them just a little bit later! (1.04mb)

Speech Input Bay 705A for Broadcast Transmitter Station Installation (1938) Discussion of program amplification, equalization, and monitoring gear which were all a part of this system. (2.66mb)

Station Speech Input Equipment No. 15A (1934) An earlier version of the 705A above. Today we would call this 'audio processing' albeit, this is a very primitive version. (3.58mb)

Studio Speech Input Equipment (1935) Beautiful booklet with a great photo of a KYW Philadelphia studio and with descriptions of the equipment shown in that photo with many more W_E equipment photos! (4.98mb}

AmericanRadioHistory.com David Eduardo Gleason's huge history resource of nearly everything related to radio and TV broadcasting including yearbooks, radio logs, and magazines many of which cover general radio history as well.

RadioShackCatalogs.com High quality PDFs of nearly everything Radio Shack ever print plus TV ads and large pictorial history albums all beginning with Radio Shack's first catalog from 1939.

Triad Transformers History File Unfortunately, this page has been hacked or has a significant security vulnerability. The link, for now, goes to the main, current Triad Magnetics webpage.