The first generation of R&S®FSH handheld spectrum analyzers has become very popular among users. The analyzers are highly valued all-purpose instruments especially for the installation and maintenance of RF transmitter systems in the field. The new R&S®FSH4 and R&S®FSH8 analyzers offer the same first-rate performance as their predecessors. In addition, they have been enhanced and expanded in a variety of ways in response to customer requirements. The R&S®FSH4 / FSH8 analyzers thus prove even more valuable instruments when it comes to performing efficient measurements in mobile use.