The ability to make over-the-air modulation quality measurements with a handheld instrument can substantially improve troubleshooting efficiency. This is especially true for cases with inaccessible Remote Radio Heads/Units, but can also be used for quick verification of transmitter quality in traditional installations. When OTA modulation quality tests are combined with the BTS Master’s LTE Pass Fail and OTA Scanner tests, as well as a simple throughput test using a PC with wireless modem, technicians can have high confidence in the entire base station.