http://www.tvtechnology.com/article/68682 Charles Rhodes doesn't think they can work, unless limited to the low VHF band. In his numbers, he includes the effect of IM3 distortion. When WSD might be operating on two open channels, they can jam an occupied channel. He also says that N+/-2 should be added to any "adjacent channel" rule, given the measured selectivity acumen of existing receivers. Bert ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line.