Southwest Antennas is has developed a new full anechoic antenna test chamber. The addition of this anechoic chamber to their measurement and testing portfolio gives them the ability to perform comprehensive antenna tests and analysis at any time for their customers, including custom test case scenarios and competitive analysis reports. The chamber will be operated by their partners at Avalon Test Equipment / 3PC.
You can see a list of other companies that have and develop Anechoic Antenna Test Chambers.