SonicSpike writes in with word that an appeals court has dealt a setback to the FCC's plans to encourage broadband over power lines. The court ruled that the FCC erred when it withheld parts of the studies it had used in arriving at its position on BPL. The court did not rule that the FCC's decision was incorrect or that it should be revisited. According to the article, about 5,000 people nationwide subscribe to BPL in 35 pilot projects. We've been discussing BPL for years. "...a federal appeals court has sided in part with amateur radio operators who challenged rules designed to speed the nascent Internet service's rollout. When setting rules for BPL operators nearly two years ago, the Federal Communications Commission said it was trying to encourage deployment of a 'third pipe' to compete with cable and DSL services, while establishing limits aimed at protecting public safety, maritime, radio-astronomy, aeronautical navigation, and amateur radio operators from harmful interference. The American Radio Relay League, which represents amateur... radio operators, however, promptly sued the agency, contending that the FCC's approach was insufficient to ward off interference with its radios and inconsistent with its previous rules. On Friday, the U.S. Appeals Court for the District of Columbia on Friday issued a ruling (PDF) that took issue with the way the FCC arrived at its rules."