and 485 meters (619 kHz) for official weather and other government reports — and requiring that broadcasting stations had to hold a Limited Commercial license. After the government started actively enforcing this ban, the college temporarily suspended broadcasting. However, after receiving "a request to broadcast the daily reports of the bureau of farms and markets", the Union College Radio Club decided to apply for one of the new broadcasting station licenses. On March 2, 1922 Union College was issued its first broadcasting license, with the randomly assigned call letters of WRL, authorizing use of the 360 meter entertainment wavelength. An expanded series of broadcasts followed, including vesper services in April, and a series of special transmissions during the College's 126th Commencement exercises in June. However, the initial enthusiasm for broadcasting soon waned, and the Radio Club's focus returned to experimental work, including two-way shortwave communication across the Atlantic using its Experimental station 2XQ. On November 11, 1922, WRL was used to broadcast a play-by-play recounting of the Union-Hamilton football game. But a report at the time noted that "Union has not been active in popular broadcasting this season, the students devoting their efforts to transoceanic tests." WRL's last license was allowed to expire on January 25, 1923, and the station was formally deleted from the government list of active stations on December 18, 1924. "Carrier current" station UBS / UCRS / WRUC (beginning 1941) After the closing of WRL, Union College did not operate a broadcasting station for the next 17 years. The resumption of broadcast activities was the result of the development of a new form of transmission system. In 1936, students at Brown University in Providence, Rhode Island developed the first campus-based carrier current radio station, initially called "The Brown Network". Carrier current stations employed very low powered AM transmitters, with their signals carried over wires, often running through steam tunnels, that linked together various buildings and dormitories. These transmission lines then fed the radio signals into a building's electrical wires, allowing radio receivers located close to the wires to pick up the transmissions. Because they were such low power, with their signals most commonly limited to a college campus plus the immediately adjoining neighborhoods, carrier current stations did not require a license from the Federal Communications Commission or qualify for officially assigned call letters. The "carrier current" innovation soon spread to other college campuses, especially in the