CM4 has an internal WiFi antenna on the PCB with a socket for an external rubber duck antenna. It is FCC approved for use with either. I want to use a behind front glass antenna from you for a metal cased display unit with a 7" TFT behind a glass window. Would that need to be retested for certification? Is this something you can help with?
Senior Antenna Engineer at Antenova With over 25 years’ experience in manufacturing, test and design, Steve has a wealth of RF and measurement knowledge across many industry sectors.