Embodiments of the present disclosure provide devices and systems that support wireless communication between wireless communication devices residing within, and external to, a Faraday cage. In some embodiments, devices and systems are provided for transmitting wireless signals through a waveguide port of a Faraday cage for wireless signals having frequencies below the cutoff frequency of the waveguide port, where a portion of the waveguide port is compromised by the presence of a conductor, thereby permitting the propagation of electromagnetic waves. In some embodiments, aspects of the present disclosure are employed to adapt a magnetic resonance imaging system for communications between a scanner room and a control room.