Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 90LT289 found under Circulator Radio Fr by Microwave Applications Group Inc. The National Stock Number assigned to this part is 5985013931419, 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 90LT289.