Festival of Frequency Measurement Submission Callsign: AA6LK Latitude and Longitude of the Recording: 38.9425 -121.1562 (CM98kw) Start time of the .csv file: Sept. 30 23:55:11 UTC station hardware Antenna type: Hustler 5BTV multiband vertical. Receiver type: Yaesu FT-847, set to AM-narrow mode. Frequency reference: HP Z3805A GPSDO as external reference to Marconi 2019 signal generator. Frequency measurement technique: GPSDO and signal generator combination were used to generate a signal at 4.999 MHz which was injected into the receiver, tuned to 4.9995 MHz, along with the measured signal, creating a ~1 kHz beat tone which was tracked by fldigi. No correction to fldigi clock error was included but was found to cause fldigi readings to be 0.012 Hz high. Injected signal level was adjusted to exceed maximum expected measurement signal level, resulting in a constant "S-meter" reading of S9+20.