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Please see my reply to your most recent post regarding this.
Also, keep in mind that since the Rangemaster is FCC certified they have met the technical requirements for a legal product. They most likely will not be held responsible for illegal use by their customers. No reasonable person would hold an automobile manufacturer liable because a customer gets a speeding ticket in one of their cars. The responsibility for legal use of the Rangemaster is yours. The Rangemaster certification gives you assurance that their unit meets the technical restrictions but it is beyond their control if your installation exceeds the antenna or ground requirements.
You are wise in asking these questions because you care about the law. I hope I and others here can help you.