(channel 12) in El Dorado as its sixth and final full-power satellite, operating from a transmitter in Huttig and broadcasting exclusively as a digital service from its launch. The addition of KETZ provided the network over-the-air coverage to about 76% of available Arkansas television households. (The five analog transmitters eventually converted to digital by June 2009, joining KETZ, as part of the national digital transition.) On September 6, 2006, AETN, in conjunction with the Arkansas Department of Education and PBS TeacherLine, launched ArkansasIDEAS ("Internet Delivered Education for Arkansas Schools"), an online learning management and professional development resource formed through the creation of the Arkansas Online Professional Development Initiative, which provides TeacherLine's instructional courses and workshops to certified educational employees of Arkansas public schools. The service, which is attributable to the state's professional development requirement for educators, is wholly funded by the ADE and is provided free of charge to state school districts. On January 11, 2008, KETS's analog transmitter was destroyed when the Redfield broadcast tower collapsed while engineers were adjusting the guy wires supporting the structure. Unlike KATV, which had both its analog and digital transmitters destroyed in the collapse and had to set up replacements for both services, the KETS's digital signal was unaffected as its transmitter was located on the adjacent Clear Channel Broadcasting Tower, on which it shares tower space with the transmitter of Pine Bluff CW affiliate KASN (channel 38). Many Central Arkansas cable and satellite providers were able to switch to the KETS digital signal, while smaller cable systems in the area either lost access to AETN completely for the outage's duration or switched to AETN's digital feed in subsequent days. Despite the logistical and economical issues of replacing an analog transmitter mere months before the original analog-to-digital transition deadline, on January 14, AETN elected to restore KETS's analog signal via a temporary transmitter installed on an auxiliary antenna on the Clear Channel tower. KETS resumed analog broadcasts from the new transmitter on June 13, 2008; as the temporary analog service operated at reduced power, some residents in low-lying areas of Central Arkansas had difficulty receiving KETS over-the-air upon the signal's restoration. In April 2011, AETN upgraded its master control and production control facilities with expanded digital and high definition equipment, allowing the network to transmit timeshifted programming, and most promotional and interstitial material shown during station breaks between programs (including most programming promotions