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Radio engineering time travel - 1930

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Radio engineering time travel (1930)

I invite you to look at the "pictures" related to radio technology in 1930. They come from various sources. The gallery has its sister version in Polish and Russian. Versions in other languages will be added successively. More detailed descriptions can be found in other language versions (articles are related and can be displayed by clicking on the icons with flags on the left, top of the TRIODA website). Of course, I will complement translations of signatures quite slowly. All descriptions are displayed using the present tense and not the past - this is not a mistake only deliberate action - a reference to the original descriptions from those years. In order not to delay the possibility of viewing the gallery, this site is made available as a "site under construction" - for which I apologize to all guests. At the beginning and end of each set of photographs there are links allowing to change the period - calendar year.

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100Bis (PS1) Tube Mixer/Control Panel

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Grzegorz "gsmok" Makarewicz, This email address is being protected from spambots. You need JavaScript enabled to view it.

With a little help of Allegro (online auction site) I became the owner of the 100BIS PS1 tube device. Although I bought it outside the auction but Allegro was unwittingly involved in the transaction. The manufacturer of the device apparently did not attach importance to such a "trifle" as the device name. According to the inscription on the front panel and content of the Instruction Manual I bought a "control panel", and according to the rating plate information and leaflet I bought a "control console". So let me use the following description of the term -"tube mixer".

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Audio Aero Capitole Power Amplifier

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Grzegorz "gsmok" Makarewicz, This email address is being protected from spambots. You need JavaScript enabled to view it.

Na pierwszy rzut oka jeszcze jeden stereofoniczny wzmacniacz lampowy w układzie przeciwsobnym. Klasyczny wygląd z trzema puszkami zawierającymi transformator sieciowy i dwa transformnatory głośnikowe oraz pięknie wyeksponowaną "baterią" lamp elektronowych. Producent zaprezentował nam również zestaw kondensatorów elektrolitycznych - to może nieco rzadziej spotykane, ale również niezbyt odkrywcze podejście projektowe. Podsumowując - wzmacniacz ładny, ale wieje nudą. Ostatni rzut oka na zastosowane lampy i nagle niespodzianka - obsada lamp dziwna, że nie powiem zwariowana. I to tutaj właśnie kryje się tajemnica tej konstrukcji. Ale zacznijmy od początku...

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Preamplifier A.R. Electronics PL-02

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Grzegorz "gsmok" Makarewicz, This email address is being protected from spambots. You need JavaScript enabled to view it.

Under the name of A. R. Electronics hides Audio Electronics Company - a small workshop producing tube amplifiers in Gdańsk. For the first time I saw a product of this company at the end of the 90-ies of the last century, when I became the happy owner of the amplifier with the symbol SE-41. Unfortunately, I do not know if the company still exists, because for some time I have no information about new A.R. Electronics amplifiers. Anyway, in the secondary market one can meet the A.R. Electronics amplifiers characterized by good sonic parameters and interesting design line. Despite the lack of information in the official offer, A.R. Electronics produce or produced not only amplifiers but also other audio equipment such as tube preamplifiers. They were made to individual order or in a small number of units. To this type of products belongs a tube preamplifier with the symbol PL-02.

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Tube amplifier WR75

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Written by "Dziadek" This email address is being protected from spambots. You need JavaScript enabled to view it.

It is now fully functional copy, unfortunately without the original parts. As you can see, power amplifier uses:

  • the beautiful 6P3S tubes at output stage,
  • the 6N8 as a phase inverter,
  • the EF183 as microphone preamplifier and
  • EF80 as gramophone preamplifier.

As the result of long-term "residence" in the wet room, all the paper capacitors were "dead", and so the most of the resistors.

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Tube amplifier WS17 LUNA

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Description and photos of details by  Andrzej Żółtowski, photos by  Piotr Stanisz Łódź.
[page was updated on April 3, 2005.] 

At the end of the first half of the sixties a small audio amplifier appeared in small electronics stores. It had an avant-garde for those times appearance and shocking pink colored casing.

This was, produced by Warsaw manufacturer called "ELZA", the "WS17 Luna" amplifier designed for ad-hoc sound reproduction in medium-sized rooms: school auditoriums, smaller churches, small clubs etc.

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Tube amplifier WR75-62 "Ampli75"

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Photographs of WR75-62 "Ampli75" amplifier ( PZT Warsaw 1964) made and gave to us Mr Piotr Kowalski This email address is being protected from spambots. You need JavaScript enabled to view it..
The happy owner of an amplifier is Maciej Myga.

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The QUAD II Amplifier

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Grzegorz "gsmok" Makarewicz, This email address is being protected from spambots. You need JavaScript enabled to view it.

The QUAD II tube amplifier was manufactured by a company with big traditions, as founded by Peter J. Walker in 1936, SP Fidelity Sound Systems, renamed later in the same year to the Acoustical Manufacturing Co. Ltd. The company was initially located in London, but after a bombing in 1941, was moved to Huntington. The name "Ouad" is an acronym for "Quality Unit Amplifier Domestic" and I must admit that the equipment bearing this name deserve to be called a high-quality audio equipment. The name "QUAD", used for many years only to manufactured products became so known in the market that in 1983 the company changed its name to QUAD Electroacoustics Ltd.

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Stereo Control Unit SC22 (Radford)

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Grzegorz "gsmok" Makarewicz,    This email address is being protected from spambots. You need JavaScript enabled to view it.

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Amplifiers WR40/62 and WR75/62 (Ampli 40 i Ampli 75)

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Written by Andrzej Żółtowski „ZoltAn”, Gliwice, This email address is being protected from spambots. You need JavaScript enabled to view it.
Note: most of the photos can be enlarged tapping on them with the mouse.

In 1963, the State Teletransmission Company in Warsaw started the production of amplifiers marked as WR40/62 (Ampli 40) and WR75/62 (Ampli 75). Very similar to much earlier model WR40 in fact they were improved and completely redesigned acoustic devices. Like their predecessor, amplifiers were intended to create a small broadcasting networks and to use in schools, small factories, large sacred halls, sports stadiums, train stations and events held in the open air.

Read more: Amplifiers WR40/62 and WR75/62 (Ampli 40 i Ampli 75)