the U.S. District Court for the Eastern District of Arkansas, after he was denied a request to appear in an AETN-sponsored Congressional debate after qualifying to appear on the ballot, claiming he was entitled to participate under the First Amendment and federal equal time rules. After ruling in favor of the AETC, Forbes filed an appeal to the U.S. Court of Appeals for the Eighth Circuit, which reversed the lower court's decision in September 1996, ruling that AETN (as the debate's sponsor) created a limited public forum from which all qualifying candidates had a presumptive right of access and could not be excluded (even based on viability grounds as AETN officials determined) unless for a particularly exceptionary reason. Concerned that the Eighth Circuit's ruling could result in fewer political and controversial social issue-based debates and diminished political coverage by public broadcasters, the AETC appealed to the U.S. Supreme Court; on May 18, 1998, the Supreme Court ruled in favor of the AETC, 6–3, in Arkansas Educational Television Commission v. Ralph P. Forbes, affirming that government-run stations do not run afoul of the First Amendment in exercising "viewpoint-neutral […] journalistic discretion," that state-owned public broadcasters were not required to invite all ballot-qualified third-party or fringe candidates to participate in their debates, and that state employees can exclude candidates outside the two major parties without violating their free speech rights. The network began maintaining a 24-hour daily schedule in 1994, when it added a tertiary feed of instructional programming during the overnight hours; daytime instructional programs were replaced with an expanded schedule of PBS children's programming as a result. By this time, AETN had begun providing distance learning via broadcast, satellite, the Internet and, by 2003, compressed video to provide educational professional development as well as access for students to a wide variety of educational courses for classroom use. In April 2001, AETN began installation of a digital satellite distribution network to replace its interconnected microwave distribution system, in an effort to modernize transmission relays between KETS and its four full-power satellite stations. Much of south-central and southeastern Arkansas remained underserved by AETN, receiving only fringe reception from nearby transmitters or defaulting to receiving the network on cable and satellite, though national PBS programming was often available from Louisiana Public Broadcasting satellite KLTM-TV in Monroe. AETN would finally gain broadcast coverage in that region on May 17, 2006, when AETN launched KETZ