It depends on what your objective is. The P275 device is designed for measuring FM modulation parameters and analyzing RDS; therefore, a fixed, stable location is generally preferred. If your goal is to analyze signal reception, this device is not suitable, as it is not a signal coverage analyzer.
It is also worth considering what you expect from such an analysis, what specific measures you intend to take, and on what basis? For instance, there may be a very weak correlation between the received signal level and the subjective listening quality. Modern automotive receivers can dynamically adjust their signal processing methods to ensure the best possible listening experience. Consequently, the actual listening quality cannot be predicted through measurements alone. Therefore, the most effective method of assessment is simply listening via a standard receiver. Other approaches either fail to provide sufficiently valid results or are impractical due to their high cost.
