Precision farmers rely on GPS and atomic clocks like NIST-F1 in Colorado, the primary time and frequency standard for the US. The document describes two atomic clocks, the LPFRS-01 and VCH-1003A, which provide highly stable frequencies for timekeeping. The LPFRS-01 is a rubidium reference oscillator with dimensions of 240x140x325 mm and weight of 5 kg, while the VCH-1003A is larger with dimensions of 550x990x550 mm and weight of 85 kg.