KRDX (103.7
MHz
The hertz (symbol: Hz) is the unit of frequency in the International System of Units (SI), often described as being equivalent to one event (or cycle) per second. The hertz is an SI derived unit whose formal expression in terms of SI base u ...
) is a
commercial
Commercial may refer to:
* (adjective for) commerce, a system of voluntary exchange of products and services
** (adjective for) trade, the trading of something of economic value such as goods, services, information or money
* a dose of advertising ...
FM radio station
Radio broadcasting is the broadcasting of audio (sound), sometimes with related metadata, by radio waves to radio receivers belonging to a public audience. In terrestrial radio broadcasting the radio waves are broadcast by a land-based rad ...
,
licensed
A license (American English) or licence (Commonwealth English) is an official permission or permit to do, use, or own something (as well as the document of that permission or permit).
A license is granted by a party (licensor) to another part ...
to
Corona de Tucson, Arizona, and serving the
Tucson metropolitan area
Tucson (; ; ) is a city in Pima County, Arizona, United States, and its county seat. It is the second-most populous city in Arizona, behind Phoenix, with a population of 542,630 in the 2020 United States census. The Tucson metropolitan s ...
. It is owned by Ted Tucker, with the license held by Desert West Air Ranchers Corporation. The station airs an
oldies
Oldies is a term for musical genres such as pop music, rock and roll, doo-wop, surf music from the second half of the 20th century, specifically from around the mid-1950s to the 1980s, as well as for a radio format playing this music.
Since 2 ...
radio format
A radio format or programming format (not to be confused with broadcast programming) describes the overall content broadcast on a radio station. The radio format emerged mainly in the United States in the 1950s, at a time when Radio broadcasting, ...
, known as "103.7 The Fox."
KRDX has an
effective radiated power
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 ha ...
(ERP) of 910
watt
The watt (symbol: W) is the unit of Power (physics), power or radiant flux in the International System of Units (SI), equal to 1 joule per second or 1 kg⋅m2⋅s−3. It is used to quantification (science), quantify the rate of Work ...
s as a
Class A FM station. The
transmitter
In electronics and telecommunications, a radio transmitter or just transmitter (often abbreviated as XMTR or TX in technical documents) is an electronic device which produces radio waves with an antenna (radio), antenna with the purpose of sig ...
is southwest of Tucson, in the Santa Rita Foothills, near
Vail
Vail is a home rule municipality in Eagle County, Colorado, United States. The population of the town was 4,835 in 2020. Home to Vail Ski Resort, the largest ski mountain in Colorado, the town is known for its hotels, dining, and for the nume ...
. It also broadcasts on 250-watt
FM translator
A broadcast relay station, also known as a satellite station, relay transmitter, broadcast translator (U.S.), re-broadcaster (Canada), repeater ( two-way radio) or complementary station (Mexico), is a broadcast transmitter which repeats (or tr ...
K244EI at 96.7 MHz.
History
The station
signed on
A sign-on (or start-up in Commonwealth countries except Canada) is the beginning of operations for a radio broadcasting, radio or television station, generally at the start of each day. It is the opposite of a sign-off (or closedown in Commonw ...
the air in . Its original
call sign
In broadcasting and radio communications, a call sign (also known as a call name or call letters—and historically as a call signal—or abbreviated as a call) is a unique identifier for a transmitter station. A call sign can be formally as ...
was KAYN, broadcasting on 98.3 MHz as the first FM radio station in
Nogales, Arizona
Nogales (; English: or ) is a city in and the county seat of Santa Cruz County, Arizona. The population was 20,837 at the 2010 United States Census, 2010 census and estimated 20,103 in 2019. Nogales forms part of the larger Tucson–Nogales L ...
. It was owned by Norman and Eva Graham and broadcast with 215 watts. The
construction permit
Planning permission or building permit refers to the approval needed for construction or expansion (including significant renovation), and sometimes for demolition, in some jurisdictions.
House building permits, for example, are subject to bu ...
was granted over the objections of
KFBR, the only other American radio station serving the
border area
The border area is the area immediately adjacent to the border of a country. In addition to the informal definition, a border area may have a legal definition and delineation, both domestically and due to bilateral agreements. Reasons for legal d ...
. The station was sold to Roadrunner Broadcasting in 1988. KZLZ Broadcasting bought the station, by then known as KLCR, in 1994.
In 1999, after two additional sales, Ted Tucker bought the station, then known as KZNO. In April 2002, Tucker was approved to move KZNO from 98.3 in Nogales to 98.5 in
Vail, Arizona
Vail is a census-designated place (CDP) in Pima County, Arizona, United States. It is southeast of Tucson. The population was 10,208 at the 2010 census, up from 2484 in the 2000 census. The area is known for the nearby Colossal Cave, a larg ...
, increasing its ERP to 3,900 watts.
According to a
U.S. Federal Communications Commission
The Federal Communications Commission (FCC) is an independent agency of the United States government that regulates communications by radio, television, wire, internet, wi-fi, satellite, and cable across the United States. The FCC maintains ju ...
(FCC) filing in 2006, the station was unable to maintain a reliable power supply.
[http://fjallfoss.fcc.gov/prod/cdbs/forms/prod/getattachment_exh.cgi?exhibit_id=414003] The only access to the transmitter site was via helicopter, and the station was powered solely by solar panels and wind turbines. The filing with the FCC asked to operate at less than licensed power or erratically based on power availability. The application was accepted by the FCC, but not approved.
In June 2010, KRDX was granted an FCC construction permit to change the
city of license
In U.S., Canadian, and Mexican broadcasting, a city of license or community of license is the community that a radio station or television station is officially licensed to serve by that country's broadcast regulator.
In North American broadcast ...
to
Corona de Tucson, Arizona, and move to 103.7 MHz, which would end its long-time interference with KOHT. The station was licensed for the new frequency and community of license effective October 9, 2020. The 103.7 transmitter now has a more consistent signal throughout all of Tucson.
See also
*
References
External links
*
* (
Guide to reading History Cards)
{{coord, 31.928, N, 110.633, W, type:landmark_region:US_source:FCC, display=title
RDX
RDX (Research Department Explosive or Royal Demolition Explosive) or hexogen, among other names, is an organic compound with the formula (CH2N2O2)3. It is white, odorless, and tasteless, widely used as an explosive. Chemically, it is classified ...
Radio stations established in 1976
1976 establishments in Arizona
Oldies radio stations in the United States