physics

Radio Barrigada

Radio Barrigada is a physics 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 Radio Barrigada rather than just read about it. In short: Radio Barrigada, formally Communications Site Barrigada and previously Communications Annex Barrigada, refers to two adjacent U.S. military transmitter facilities located in the villages of Barrigada and Mangilao on the western Pacific territory of Guam. The larger facility is Naval Computer and Telecommunications Site (NCTS) Barrigada, operated by Naval Base Guam, located entirely within Barrigada.

Key takeaways

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

Reference excerpt

Radio Barrigada, formally Communications Site Barrigada and previously Communications Annex Barrigada, refers to two adjacent U.S. military transmitter facilities located in the villages of Barrigada and Mangilao on the western Pacific territory of Guam. The larger facility is Naval Computer and Telecommunications Site (NCTS) Barrigada, operated by Naval Base Guam, located entirely within Barrigada. To its south, the Barrigada Transmitter Site, operated by Andersen Air Force Base, lies partially within Mangilao. The installation itself is managed by Joint Region Marianas. Radio Barrigada is the counterpart to the telecommunications receiving site Naval Computer and Telecommunications Station Guam, located to the north in Finegayan, Dededo. Located near the high point of Mount Barrigada, Radio Barrigada comprises 1,800 acres (7.3 km2).

History

It is assumed that the area was inhabited before Spanish contact, as many latte stone sets have been found in the nearby area of Tiyan. During the Spanish-Chamorro Wars of the late seventeenth century, residents were forced into centralized areas as part of the Spanish policy of Reducción. The area was then used for ranching and farming by residents of the centralized villages. Following the U.S. Capture of Guam in 1898, the Naval Government allowed the region to be settled permanently. During the Japanese occupation of Guam (1941-1945), local residents were forced to labor building the Japanese airfield at Tiyan, which later became Naval Air Station Agana and Antonio B. Won Pat International Airport. After U.S. forces secured the southern island in the Battle of Guam in July 1944, remaining Japanese forces decided to make a stand at Mount Barrigada to delay the U.S. victory as much as possible. The resulting Battle of Barrigada on 2 and 3 August was the fiercest fighting of the latter part of the battle. After the U.S. victory, the military decided that the location would be used for military facilities, and a military golf course. The Barrigada village center was relocated farther west, where the Navy laid out new streets and plots. The new facilities included Naval Radio Station (Transmitter) (NAVRADSTA (T)) Barrigada. From 1945 to 1946, the Navy operated a shortwave radio communications station NU5Q at Barrigada. More than 200 correspondents accredited to the headquarters of Commander, U.S. Pacific Fleet/Pacific Ocean Areas in Nimitz Hill Annex were allowed to file stories through NU5Q. During the first six weeks of the Battle of Okinawa, over 300 radio programs were relayed from transmitters aboard USS Eldorado through KU5Q to the mainland U.S. Recordings of the surrender of Japan aboard USS Missouri on 2 September 1945 were sent to a Japanese radio station and flown to Guam for broadcast by NU5Q. The Barrigada broadcast, received by an RCA shortwave communications center near San Francisco, was chosen by U.S. networks as clearer and rebroadcast to the public. As of 2012, 15 acres (0.061 km2) of Radio Barrigada is leased to the Guam Army National Guard for training. The two facilities share boundaries through the Navy's Admiral Nimitz Golf Course. There is no direct road directly connecting the two. NCTS Barrigada is accessed via Guam Highway 16 in Barrigada. The Air Force's Barrigada Transmitter Site is accessed to the south via Guam Highway 15 in Mangilao. Radio Barrigada is under construction through at least the year 2025, including the installation of new antennas at Building 51 and new ground radio equipment for military command and control.

See also US military installations in Guam

References

Illustrations

Worked examples

Example 1 — a first encounter with Radio Barrigada

Start with the simplest possible case. Write down what Radio Barrigada claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, 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 Radio Barrigada 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 Radio Barrigada 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 Radio Barrigada

In research: Radio Barrigada appears in physics 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 Radio Barrigada 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: Radio Barrigada is common in secondary-school and first-year university syllabi. It links to neighbouring topics Barrigada, Guam, Communications and electronic installations of the United States Navy, Installations of the United States Air Force, so understanding it makes those chapters shorter.
In everyday life: Look for Radio Barrigada 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 Radio Barrigada in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Radio Barrigada 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 Radio Barrigada out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Radio Barrigada in simple terms?

Why does Radio Barrigada matter?

Because it connects several physics 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 Radio Barrigada?

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 Radio Barrigada.