Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number EG504AT-109 found under Coupler Antenna by Microwave Engineering Corporation. The National Stock Number assigned to this part is 5985013764876, 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 EG504AT-109.