The Model 3181 Broadband Mini-Bicon Antenna is a broadband, omnidirectional antenna with a radiation pattern that conforms to the CISPR-16 specifications. It can also be used for surveying or spectrum monitoring when used with a portable spectrum analyzer.

The Model 3181 can be used for EM field surveying and spectrum monitoring. Its low weight design allows for use as a surveying tool, when connected to a portable spectrum analyzer.