WMDR (AM)

Nostalgia is a sentimentality for the past, typically for a period or place with happy personal associations. The word nostalgia is a learned formation of a Greek compound, consisting of νόστος (nóstos), meaning "homecoming", a Homeric word, and ἄλγος (álgos), meaning "sorrow" or "despair", and was coined by a 17th-century medical student to describe the anxieties displayed by Swiss mercenaries fighting away from home. Described as a medical condition—a form of melancholy—in the Early Modern period, it became an important trope in Romanticism.

WHTP is a commercial radio station licensed to Gardiner, Maine, United States. It serves the Lewiston-Auburn and Augusta metropolitan areas. The station is owned by MaineInvests LLC. It airs a rhythmic contemporary format, branded as Hot Radio Maine, simulcast with WHTP-FM (104.7) in Kennebunkport and WHZP in Veazie.

WMDR-FM, known as "God's Country", is an American FM radio station licensed to Oakland, Maine located at 88.9 FM with a Southern Gospel and Christian country format for the Augusta-Waterville, Portland, Lewiston-Auburn and Northeastern New Hampshire areas It has been on the air since December 2005 and is part of the Worship Radio Network. In March 2007, the station inherited the Southern Gospel format on WMDR (AM) with the Contemporary Christian format moving to the AM WMDR.

Contemporary Christian music (CCM), also known as Christian pop, and occasionally inspirational music, is a genre of modern popular music, and an aspect of Christian media, which is lyrically focused on matters related to the Christian faith and stylistically rooted in Christian music. It was formed by those affected by the 1960s Jesus movement revival who began to express themselves in other styles of popular music, beyond the church music of hymns, gospel and Southern gospel music that was prevalent in the church at the time. Initially referred to as Jesus music, today, the term is typically used to refer to pop, but also includes rock, alternative rock, hip hop, metal, contemporary worship, punk, hardcore punk, Latin, electronic dance music, R&B-influenced gospel and country styles.

In electrical engineering and telecommunications, the center frequency of a filter or channel is a measure of a central frequency between the upper and lower cutoff frequencies. It is usually defined as either the arithmetic mean or the geometric mean of the lower cutoff frequency and the upper cutoff frequency of a band-pass system or a band-stop system.

Effective radiated power (ERP), synonymous with equivalent radiated power, is an IEEE standardized definition of directional radio frequency (RF) power, such as that emitted by a radio transmitter. It is the total power in watts that would have to be radiated by a half-wave dipole antenna to give the same radiation intensity as the actual source antenna at a distant receiver located in the direction of the antenna's strongest beam. ERP measures the combination of the power emitted by the transmitter and the ability of the antenna to direct that power in a given direction. It is equal to the input power to the antenna multiplied by the gain of the antenna. It is used in electronics and telecommunications, particularly in broadcasting to quantify the apparent power of a broadcasting station experienced by listeners in its reception area.

Augusta is the capital city of the U.S. state of Maine and the seat of Kennebec County.