This Narco IDME-891 DME / VOR / LOC / Glideslope / Marker Beacon Indicator is a high-quality avionics device compatible with various brands and manufacturers. Made in the United States, it is a reliable and efficient tool for aviation enthusiasts. Its multiple functions include DME, VOR, LOC, Glideslope, and Marker Beacon Indicator, making it a versatile addition to any avionics setup.