Disease resistance in domesticated fowl has been associated with the B and Rfp-Y systems of major histocompatability genes. The scheduler hardware module communicates an interrupt request signal to the DSP that is indicative of any change in a highest priority runnable event. The private data may be encrypted using the key, resulting in a ciphertext. The transmitter then forms rectangular arrays including a predetermined number of columns and rows using the received bits of data such that the columns are based on a segmented radio frame size suitable for variable data-rate transmission. The method includes writing data to the tape while the tape is traveling at a first speed; stopping the tape; determining an optimum second speed to drive the tape to travel; and, thereafter driving the tape to travel at the second speed while writing data to the tape.