One major change in the rules is the use of second adjacent waivers. These are available to those areas that don’t have any fully spaced channels. Keeping in mind that though a second adjacent might be available, they must be backed up by solid engineering studies that prove the calculated interference zone will not affect any listeners to the affected existing second adjacent facility. Some are fairly simple, once you have calculated the interference zone. If inside that zone, there are no buildings or four lane highways, it would likely be a grantable waiver. However, usually where a second adjacent waiver is needed would be in highly populated areas. So that kills most attempts at siting these stations using this method.
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