This read-write object enables or disables sending a 10MHz frequency reference to the LNB: disable(0) or enable(1). Some LNBs use an externally supplied 10 MHz reference, rather than a free-running internal oscillator, for better frequency stability, so this setting must match what the specific LNB model expects -- disabling it for one that requires it will degrade that LNB's frequency accuracy and stability. When installing a high-stability LNB model specified to use an external 10 MHz reference for improved long-term frequency accuracy, an admin would set this to enable(1) to actually supply that reference signal.