located at his home on South Prospect Street. The following February another newspaper article stated that he had been broadcasting regular Sunday evening concerts, and it was also announced that Reynolds was making plans to move his family and his company to Denver. (Reflecting this change, the Commerce Department's June 1921 amateur station call book entry for 9JE lists its new location as Denver, operated by the Reynolds Radio Specialty Co.) After moving to Denver, Reynolds joined with other radio enthusiasts in making a number of "mobile" demonstrations, where radio-receiver equipped automobiles picked up special programs. He participated in the May 19, 1921, broadcast of the opera Martha from the Denver Municipal Auditorium. In the summer of 1921, Reynolds was issued a "Special Amateur" license, with the call sign 9ZAF. This allowed transmissions on 370 meters (811 kHz), a wavelength with less interference than 9JE had encountered on the congested standard amateur wavelength of 200 meters (1500 kHz). In addition to experimental broadcasts, 9ZAF acted as a "relay station" for coast-to-coast messages passing through a cooperative network of Amateur Radio Relay League stations. In October, it was announced that 9ZAF's equipment had been upgraded, and, in addition to Sunday evening concerts from 8:00 to 9:30 p.m., the station was broadcasting daily weather forecasts twice a day, at 8:30 a.m. and 9:00 p.m. In early 1922, the Rocky Mountain News announced it was providing news bulletins as a supplement to the nightly station concerts. The paper also started promoting 9ZAF, referring to the station as the "News-Times-Reynolds Broadcasting station". The start of KLZ Initially, there were no formal restrictions about which radio station license categories could make broadcasts intended for the general public. However, effective December 1, 1921, the Department of Commerce, which regulated U.S. radio at this time, adopted a regulation that stations making general broadcasts now had to hold a Limited Commercial license. To comply with this new standard, the Reynolds Radio Company applied for the appropriate license, and on March 10, 1922, a broadcasting station authorization — the first in the state of Colorado — with the randomly assigned call letters of KLZ was issued to the company. KLZ was given permission to use both of the broadcasting wavelengths established by the new regulations: 360 meters (833 kHz) for "entertainment" broadcasts, and 485 meters (619 kHz) for "market and weather" reports. (Reynolds' amateur radio transmissions, although using the