Electronic signal generators for generating and coupling electrical current signals to pipes, cables, or other hidden or buried utilities; signal generators and signal couplers for providing test signals to hidden or buried pipes, cables, or other utilities; buried utility locators for receiving magnetic field signals emitted from hidden or buried utilities and determining depth, position, or other information about the hidden or buried utilities based on processing of the received magnetic fields; downloadable software for controlling generation and provision of current signals for coupling to buried utilities; downloadable software for processing magnetic field signals received at a utility locator to generate information about hidden or buried utilities; utility locating transmitters for generating current signals for utility locating; downloadable software for generating signals for controlling generation and provision of current signals for coupling to buried utilities; accessories for use with buried utility locating systems; wireless communication modules for wireless coupling of data and information to buried utility locators; wireless communication modules for wireless coupling of data and information to cellular phones, tablets, or computers