science

Tennelec

Tennelec 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 Tennelec rather than just read about it. In short: Tennelec was a US electronics company founded in the early 1960s by Edward Fairstein in Oak Ridge, Tennessee. The company came to prominence producing instrumentation for nuclear studies and later, programmable scanning radios.

Key takeaways

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

Reference excerpt

Tennelec was a US electronics company founded in the early 1960s by Edward Fairstein in Oak Ridge, Tennessee. The company came to prominence producing instrumentation for nuclear studies and later, programmable scanning radios. The TC-200 amplifier was a successful early design that established Tennelec as a leader in the nuclear instrumentation field. Following on the heels of the TC-200 success, the company developed additional components necessary for precise nuclear measurement, including detectors and particle counters. Tennelec also manufactured innovative scanning radios in the 1970s. The first programmable radio scanner was the Memoryscan from Tennelec Commercial Products Division, introduced in 1974, and later known as the Memoryscan 1 (model MS-1). This was followed by a slightly improved model, the Memoryscan 2 (model MS-2). Prior to the MS-1 and MS-2, scanners were "programmed" by inserting a series of hand-cut crystals tuned for different frequencies. The scanner would then switch between the frequencies, stopping when the user pressed a switch. With the MS-1 and MS-2, the user selected up to 16 frequencies they wanted to monitor by setting them up using binary codes entered via two pushbuttons on the front panel. Sixteen toggle switches allowed the user to select which frequencies were of interest at any given time. The system could cycle through the selected frequencies until stopped. The advantage was that the system could be set up to monitor different sets of frequencies, e.g., police one night, fire departments the next. The first scanner allowing direct entry of decimal frequencies on a keypad, was the Tennelec MCP-1. The scanner was released at the Winter 1976 Consumer Electronics Show in Chicago. The system was a hit, and was soon picked up for Radio Shack. To help users get started, Radio Shack also purchased thousands of copies of Police Call, a guide to various radio frequencies Partly due to poor quality control of their scanner line, Tennelec filed for bankruptcy soon after introducing their latest radio models. By this point other manufacturers, in particular SBE and Regency and Electra, had already introduced their own programmable models. Tennelec, still located in Oak Ridge, TN, is a division of Mirion Technologies, which acquired Tennelec's previous parent company, Canberra Industries.

See also Scanner (radio) Consumer Electronics Show

References

External links

Worked examples

Example 1 — a first encounter with Tennelec

Start with the simplest possible case. Write down what Tennelec 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 Tennelec 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 Tennelec 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 Tennelec

In research: Tennelec 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 Tennelec 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: Tennelec is common in secondary-school and first-year university syllabi. It links to neighbouring topics Companies based in Tennessee, Defunct electronics companies of the United States, Radio manufacturers, so understanding it makes those chapters shorter.
In everyday life: Look for Tennelec 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 Tennelec in 20 minutes

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

Frequently asked questions

What is Tennelec in simple terms?

Why does Tennelec 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 Tennelec?

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 Tennelec.