er spurious emissions the receiver 676 Chapter 5 The channel bandwidths supported by a UE are determined by the NR operating bands as well as the transmitter and receiver RF requirements for those frequency bands. This is due to fact that the combination of maximum power and a large number of transmitted and/or received resource blocks can make it difficult to meet some of the RF requirements. The concept of network signaling (NS) of RF requirements has been used in LTE and continued to be used in NR, where a device can be informed during call setup of whether some spe- cific RF requirements apply when the device is connected to a network. Additional RF requirements apply to the UE when a specific NS value (NS_m) is signaled to the device as part of the handover procedure or via a broadcast message. These requirements are associ- ated with limitations and variations of RF parameters such as device output power, maxi- mum channel bandwidth, and the number of transmitted resource blocks. The variations of the requirements are defined along with the NS_m in the UE RF specifications [2], where each value corresponds to a specific condition. The default value for all bands is NS_01. The NS_m values are related to the permissible power reduction referred to as addi- tional maximum power reduction (A-MPR) and may further apply to transmission using the minimum number of resource blocks, depending on the channel bandwidth [10]. More spe- cifically, each additional emission requirement is associated with a unique NS value indi- cated via RRC signaling by an NR frequency band number and an associated value in the field additionalSpectrumEmission. In NR radio specifications, the notion of indication or signaling of an NS value refers to the corresponding indication of an NR frequency band number (i.e., the IE field freqBandIndicatorNR and an associated value of additionalSpectrumEmission in the relevant RRC information elements) [2]. In order to accommodate different deployment scenarios for base stations, there are multipl