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Portapak

Portapak is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Portapak rather than just read about it. In short: A Portapak is a battery-powered, self-contained video tape analog recording system. Introduced to the market in 1967, it could be carried and operated by one person.

Portapak — main illustration
Portapak — illustration

Key takeaways

  • Portapak belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Portapak to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Portapak from memory before moving on to harder problems.

Reference excerpt

A Portapak is a battery-powered, self-contained video tape analog recording system. Introduced to the market in 1967, it could be carried and operated by one person. Earlier television cameras were large and heavy, required a specialized vehicle for transportation, and were mounted on a pedestal. The Portapak made it possible to shoot and record video easily outside of the studio without requiring a crew. Although it recorded at a lower quality than television studio cameras, the Portapak was adopted by both professionals and amateurs as a new method of video recording. Before Portapak cameras, remote television news footage was routinely photographed on 16mm film and telecined for broadcast. The first portapak system, the Sony DV-2400 Video Rover, was a two-piece set consisting of a black-and-white composite video video camera and a separate record-only helical scan ½″ video tape recorder (VTR) unit. It required a Sony CV series VTR (such as the CV-2000) to play back the video. Following Sony's introduction of the Video Rover, numerous other manufacturers sold their own versions of Portapak technology. Although it was light enough for a single person to carry and use, it was usually operated by a crew of two: one carrying and controlling the camera, and one carrying and operating the VTR. This model was followed up by the AV-3400/AVC-3400, which used the EIAJ-1 format, and had 30-minute capacity, as well as playback capability. Later Portapaks by Sony, JVC, and others used such formats as U-Matic videocassettes (with reduced-size 20-minute "U-Matic S" cassettes) and Betacam SP (for which a Portapak, unlike a camera-mounted deck, allowed the use of the larger "L" cassettes, for up to 90-minute recording time). The introduction of the Portapak had a great influence on the development of video art, guerrilla television, and activism. Video collectives such as TVTV and the Videofreex utilized Portapak technology to document countercultural movements apart from the Big Three television networks. The Portapak was also a crucial technology for the Raindance Foundation, a collective consisting of artists, academics, and scientists, motivated by the potential of the Portapak and video to develop alternative forms of communication. Because of its relative affordability and immediate playback capability, the Portapak provided artists, experimenters, and social commentators the ability to make and distribute videos apart from well-funded production companies.

A generation whose childhood had been dominated by broadcast television was now able to get its hands on a means of TV production. The machine was relatively inexpensive ($1,500), light- weight, easy to use and reliable, and it produced a decent black-and-white image with acceptable audio. Tape was reusable and inexpensive. The video portapak helped trigger a range of activity linking video with social change.

The Portapak would seem to have been invented specifically for use by artists. Just when pure formalism had run its course; just when it became politically embarrassing to make objects, but ludicrous to make nothing; just when many artists were doing performance works but had nowhere to perform, or felt the need to keep a record of their performances; just when it began to seem silly to ask the same old Berkleean question, ‘If you build a sculpture in the desert where no one can see it, does it exist?’; just when it became clear that TV communicates more information to more people than large walls do; just when we understood that in order to define space it is necessary to encompass time; just when many established ideas in other disciplines were being questioned and new models were proposed — just then the Portapak became available.

See also CCJ connector

References

External links Charles Bensinger (1981) Video Guide, Second Edition

Illustrations

Portapak illustration

Worked examples

Example 1 — a first encounter with Portapak

Start with the simplest possible case. Write down what Portapak claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Portapak before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Portapak ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Portapak

In research
Portapak appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Portapak in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Portapak is common in secondary-school and first-year university syllabi. It links to neighbouring topics Sony products, Television technology, Television terminology, so understanding it makes those chapters shorter.
In everyday life
Look for Portapak outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Portapak in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Portapak means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Portapak out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Portapak in simple terms?

A Portapak is a battery-powered, self-contained video tape analog recording system. Introduced to the market in 1967, it could be carried and operated by one person.

Why does Portapak matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Portapak?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Portapak.

Tags

  • Sony products
  • Television technology
  • Television terminology
  • Video storage

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