Home

Radio engineering time travel - 1930

Details
Category: Articles
Hits: 3762

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.

Read more: Radio engineering time travel - 1930

Broadcast tube amplifier WR40 - "Ampli 40"

Details
Category: Gallery
Hits: 4729


Andrzej Żółtowski „ZoltAn”, Gliwice, This email address is being protected from spambots. You need JavaScript enabled to view it.

A tube amplifier mass-produced since the second half of the 50's of the 20th century. Manufactured by the State Teletransmission Company in Warsaw. WR40 "Ampli 40"  tube amplifier was a portable device designed to create small broadcasting networks and to serve as audio amplifier for mass event organized in large rooms such as sports halls, school auditoriums, and events held in the open air.

Read more: Broadcast tube amplifier WR40 - "Ampli 40"

100Bis (PS1) Tube Mixer/Control Panel

Details
Category: Gallery
Hits: 4735


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".

Read more: 100Bis (PS1) Tube Mixer/Control Panel

Tube amplifier WR75

Details
Category: Gallery
Hits: 4737


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.

Read more: Tube amplifier WR75

Stereo Control Unit SC22 (Radford)

Details
Category: Gallery
Hits: 4737

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

Read more: Stereo Control Unit SC22 (Radford)