User blog comment:Imrlybord7/How to be amazing at Call of Duty (really)/@comment-5071701-20120608011830/@comment-76.174.234.52-20120608021647

If by open maps you mean large maps, then I disagree. The smaller the map, the more of an effect the portable radar has. Take Dome for example. If you throw a portable radar in the middle, you can cover the A spawn and part of the C spawn and the cars in the middle. If didn't mean large maps, then I agree.