In September 1922 the Department of Commerce set aside a second entertainment wavelength, 400 meters (750 kHz) for "Class B" stations that had quality equipment and programming. Locally, both WGY and the Rensselaer Polytechnic Institute station, WHAZ, were assigned to this new wavelength on a time-sharing basis. In May 1923 additional broadcasting frequencies were announced, and the Schenectady/Troy region was given exclusive national use of 790 kHz. WGY and WHAZ were assigned to share this new allocation. On November 1, 1927 WHAZ moved to a new frequency, giving WGY full-time use.