The RTH-K34 with Expansion option from Rohde & Schwarz is a specialized radio test and measurement device. It is essentially a media gateway and access router used to connect radio sources and receivers with devices on the Internet. The RTH-K34 features two network interfaces, which allow it to operate both as a LAN/WAN router and as a media-access gateway. The Expansion option adds additional features and functionality, such as additional IP addresses, air interface protocols, a management console, and embedded security features. The device is designed to be used in a variety of radio-test scenarios, including digital broadcasting, digital radio, FM, digital television, and data transmission. It is capable of supporting up to 50 RTH Scope RIder clients simultaneously, providing real-time control of radio tests and management of radio transceivers from a single interface. Additionally, it is capable of supporting various air interface protocols, such as Bluetooth, Wi-Fi, and 3G/4G/5G cellular standards.