Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DF520C V4 001 found under Antenna by Digital Receiver Technology Inc. The National Stock Number assigned to this part is 5985016703309, and the Federal Supply Class is 5985 Antennas Waveguides And Related Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like DF520C V4 001.