Real-time spectrum analysis (RTSA) provides to be a useful tool in scenarios from research and development to production to aftermarket troubleshooting. This type of tool is great for measuring single sideband (SSB) phase noise, modulation/demodulation, and harmonics. Useful in everyday applications whenever looking at a signal in the frequency domain or time domain. The communications field is where Advanced Test Equipment Rentals provides the best solutions for many applications. Whether it is simple R&D of a modulation/demodulation system or searching for interference signals with directional antennas, we can provide a solution in a timely manner.