XETRA-FM

XETRA-FM (91.1 FM) — branded 91X, and sometimes identified as XTRA-FM — is an English language, Mexican-owned (border blaster) Alternative Rock music station broadcasting from Tijuana, Baja California on 91.1 MHz. The studios are located in the Mira Mesa area of San Diego. The station is one of three outlets that are programmed by Local Media of America, who took over the operations of XETRA-FM from Broadcast Company of the Americas in 2010.

History

On November 20, 1968, Radiodifusora del Pacífico, S.A. de C.V., then-owner of XETRA-AM, received a concession for a new FM station with the same callsign, XETRA-FM on 91.3 MHz. By the time the station signed on in 1978, carrying an AOR format, it had moved to 91.1. 91X's broadcast studios were located at the 91X transmitter site on Mount San Antonio in Tijuana. Initially, programming was recorded at the San Diego Studios in the Harcourt, Brace, Jovanovich building downtown and driven to the transmitter site several times a day. That proved to be uncompetitive. . Disc jockeys then commuted from San Diego to Tijuana each shift. 91X was notorious for having DJs with no personality; they would simply announce the previous song, and the next song. On January 11, 1983, at 6 PM, 91X followed in the footsteps of KROQ-FM in Los Angeles and switched formats to "rock of the 80s" (modern rock). 91X played "Stairway to Heaven" (Led Zeppelin) as the final song of the AOR format. Immediately afterward, then-Executive Vice President and General Manager John Lynch made the announcement of the format change and disc jockey Todd Ralston went right into "Sex (I'm A...)" by Berlin. Former 91X on-air personality Jim LaMarca recounts the transition:

XETRA

XETRA may refer to:

Xetra (trading system)

Xetra ("Exchange Electronic Trading", MIC Code XETR is an electronic trading venue and trading technology of the same name for securities, based in Frankfurt, Germany. It was initially developed for the Frankfurt Stock Exchange which launched it in November, 1997. It is operated by Deutsche Börse Cash Market, which is a member of Deutsche Börse.

More than 14 other stock exchanges around the world have licensed the system. Xetra’s electronic trading technology proved popular with other exchanges as it had a good record of scalability, speed, reliability and the ease with which it could be adapted in other markets.

The conception and the implementation of the Xetra technology was carried out by Accenture and Deutsche Börse Systems, the technology division of Deutsche Börse.

The Xetra technology has been successfully implemented on the Irish Stock Exchange (operating as ISE Xetra), the Vienna Stock Exchange, the Bulgarian Stock Exchange, the European Energy Exchange, the Budapest Stock Exchange, and a number of other exchanges. It will also be installed on the Prague Stock Exchange and Shanghai Stock Exchange.

XEWW-AM

XEWW-AM is the call letters of a radio station operating on 690 AM and licensed to the Tijuana/Rosarito area of Baja California, Mexico, with additional studio facilities in Burbank, California, United States.

It is a high-powered station, with its 77,500 watt daytime signal sometimes reaching as far as the middle of the San Joaquin Valley, but otherwise covering nearly all of Southern California and most of Baja California. It operates with 50,000 watts at night as is required by the "Rio" treaty. This same treaty would normally allow XEWW to operate with a daytime signal of 100,000 watts. However, 77,500 watts was apparently selected as this power sends the equivalent of the station's former 50,000 day power (from its original Tijuana site, since demolished) towards Los Angeles without also increasing its prohibited overlap with 670 and 710 kHz in Los Angeles (from its present Rosarito site). Had it chosen to operate at 100,000 watts days would have required a modified daytime directional antenna at Rosarito (the night directional antenna at Rosarito would not need to be modified).