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Collins 212Z1 1956 - Amplifier/Audio-Mixer see more
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© Francisco Matias
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Collins 212Z1 1956 - Amplifier/Audio-Mixer 4-way audio mixer / amplifier (transistorized), used for exterior broadcasting.

It worked with 4 microphones of impedance from 30 to 60 ohms. The output circuit corresponds to a 60 ohms line.

The 212Z1 has a power supply of 15 uninterruptible batteries, which automatically activates, in situations of AC power failure, supplementary batteries.

The 212Z1 mixer/amplifier is enclosed in a case and has a weather-resistant black and bluish-grey metallic finish.

Video: "Programa Feminino" (Women's Programme), presented by Maria João Avilez.


In 1933, Arthur Collins founded the "Collins Radio Company", in Cedar Rapids (USA).

During World War II, Radio Collins stands out as a technology company and its military, space and commercial telecommunications radio communication equipment, recognized for its quality.

It is distinguished by its excellent design and manufacturing of amateur and commercial transmitters and receivers.

Collins Radio will pioneer the production of radios for aircraft and the fusion of computer and communication technology.).

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Also in 1956

  • 5 of April - Fidel Castro declares himself at war with Cuban President Fulgencio Batista.
  • 23 of March - Pakistan becomes the first Islamic republic in the world. (Republic Day in Pakistan)
  • 7 of November - Suez Crisis: The United Nations General Assembly adopts a resolution calling for the United Kingdom, France and Israel to immediately withdraw their troops from Egypt.
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