computer science

WDCO-CD

WDCO-CD is a computer 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 WDCO-CD rather than just read about it. In short: WDCO-CD (channel 10) is a low-power, Class A television station licensed to Woodstock, Virginia, United States, serving the Washington, D.C. metropolitan area with programming from the digital multicast network Roar. Owned and operated by Sinclair Broadcast Group, it is sister to ABC affiliate WJLA-TV (channel 7) and local cable channel WJLA 24/7 News.

Key takeaways

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

Reference excerpt

WDCO-CD (channel 10) is a low-power, Class A television station licensed to Woodstock, Virginia, United States, serving the Washington, D.C. metropolitan area with programming from the digital multicast network Roar. Owned and operated by Sinclair Broadcast Group, it is sister to ABC affiliate WJLA-TV (channel 7) and local cable channel WJLA 24/7 News. WDCO-CD's transmitter is located in Ward Circle in Washington's northwest quadrant. Co-owned and co-located WIAV-CD (channel 58), licensed to Washington, relays WDCO-CD's Roar programming in the new ATSC 3.0 broadcasting standard.

History

Shenandoah Valley religious broadcaster

The station has operated since September 30, 1985, when it was put on the air as a religious independent station by Ruarch Associates, LLC (its original calls were W10AZ, with the WAZT calls, introduced in 1994, apparently being derived from it), and once had a radio sister station, WAZR in nearby Harrisonburg. The WAZT network offered some programming from Cornerstone and other religious networks, but it generally did not show them in-pattern with those networks, and it also broadcast some secular syndicated programming and classic television shows. WAZT once broadcast a local newscast at 5:30 p.m. and 9:30 p.m. Monday through Friday (entitled News 10), but this was discontinued on December 26, 2005. In January 2006, WAZT began airing CBN's NewsWatch program. Ruarch sold WAZT to JLA Media & Publications (no relation to WJLA-TV) in 2006. Jones Broadcasting acquired the station out of Chapter 7 bankruptcy in 2011. In 2012, Jones Broadcasting reached a deal to buy the struggling and bankrupt Danville-based independent WEFC-TV, located in the larger Roanoke–Lynchburg market, with plans to move operations to Roanoke and make it the new group flagship. The sale fell through in the spring of 2013, with Liberty University buying the station instead; Jones then sold the WAZT group of stations to Venture Technologies Group that December. Venture immediately began moving WAZT and its sister stations to the far larger Washington, D.C., television market. At the time, WAZT transmitted from a hill near Toms Brook, Virginia. After agreeing to purchase the WAZT network, Venture obtained a construction permit to move the station's analog signal to the WZRV tower near Front Royal, Virginia. Later in 2014, it filed for a digital signal at a new transmitter site near The Plains, Virginia, which signed on in March 2015. Venture also purchased Washington-based WIAV-CD in 2014, which expanded the network's footprint into the city proper. After spending most of its time as a religious broadcaster branded as simply "WAZT", the station and its relays changed to the branding "Faith Television Network" under Venture's ownership. WAZT-CD's callsign was changed to WDCO-CD on October 11, 2017. On the same day, Winchester repeater WAZW-CD became WAZT-CD. On January 24, 2018, Faith Television Network announced it would cease broadcasting. All four remaining stations in the network became full-time affiliates of Jewelry Television on January 31.

Move-in to Washington As a result of the Federal Communications Commission (FCC)'s 2016–17 spectrum reallocation incentive auction, channels 24 and 30—occupied by WNVC and WNVT, respectively—became available in the Washington market in 2018. WDCO-CD applied to take over WNVC's channel 24 facilities at its tower in Merrifield, Virginia, which would place it firmly in the Washington market, while WIAV-CD applied to move to channel 30. After WNVC was unable to find a channel-sharing partner and went off the air, it sold the tower and transmitter building. Left without a transmission site, WDCO-CD moved to temporary low-powered facilities shared with WIAV-CD at the WRC-TV (channel 4) tower in northwest Washington, and reapplied to permanently build there. The new WAZT-CD later relocated from Winchester to Blue Ridge Mountain in extreme southern Jefferson County, West Virginia, near the Virginia–West Virginia state line but also within the Washington market. After an additional "hop" to a tower in Leesburg, Virginia, this license was also moved into Washington proper and sold to Weigel Broadcasting, who operates it as WDME-CD. On June 25, 2020, Venture Technologies Group filed an agreement with the FCC to sell WDCO-CD and WIAV-CD to Sinclair Broadcast Group for $8.5 million. The sale was completed on October 15, making them Sinclair's second and third properties in the Washington market, alongside WJLA-TV. On the same day, WDCO-CD and WIAV-CD flipped to Sinclair's TBD multicast network. WAZT-CD was not included in the sale and continued to air Jewelry TV programming; it was later sold to Weigel Broadcasting and is now WDME-CD. Sinclair's express intention for the purchase of the two stations was to convert WIAV-CD to Washington's first ATSC 3.0 broadcaster. WDCO-CD is to continue ATSC 1.0 service and honor the existing channel-sharing agreement with UniMás affiliate WMDO-CD (channel 47). To clear the way for ATSC 3.0 conversion work, WMDO-CD switched its channel-share from WIAV-CD to WDCO-CD at the end of 2020. Sinclair subsequently commenced ATSC 3.0 operation over WIAV-CD on March 25, 2021. WDCO-CD and WIAV-CD satisfy the requirement that Class A stations broadcast at least three hours per week of locally produced programming by airing WJLA's weekday 5 and 6 p.m. newscasts on a two-hour delay from 7 to 8:30 p.m. The entire TBD schedule remains available on streaming and over-the-air on WJLA-DT4 and Baltimore's WUTB.

Former translators WDCO-CD formerly operated five other relays:

WAZT-CD

WAZC-LP WAZC-LP went on the air on March 29, 1988, as W16AA, a translator for Charlottesville's NBC affiliate, WVIR-TV owned by Rockingham County with a transmitter on Massanutten Peak. In 1998, it was sold to Ruarch and moved to Luray. On November 5, 2004, WJAL in Hagerstown, Maryland, received the allocation for its digital signal, resulting in WAZC-LP being forced to move to channel 35 on March 31, 2006. A construction permit for WAZC-LD on channel 35 expired in June 2010 without being built. This station was not included in the 2013 sale to Venture and later went off the air. Its license was cancelled by the FCC on October 2, 2020.

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with WDCO-CD

Start with the simplest possible case. Write down what WDCO-CD claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer 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 WDCO-CD 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 WDCO-CD 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 WDCO-CD

In research: WDCO-CD appears in computer 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 WDCO-CD 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: WDCO-CD is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1985 establishments in Virginia, 2020 mergers and acquisitions, Low-power television stations in Virginia, so understanding it makes those chapters shorter.
In everyday life: Look for WDCO-CD 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 WDCO-CD in 20 minutes

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

Frequently asked questions

What is WDCO-CD in simple terms?

Why does WDCO-CD matter?

Because it connects several computer 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 WDCO-CD?

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 WDCO-CD.