A nav receiver with 'Rho/Theta' capability would be which configuration?

A nav receiver with 'Rho/Theta' capability would be which configuration?

• A. A VOR receiver with HSI and a second VOR
• B. A VOR receiver and an ADF
• C. A VOR receiver with a DME
• D. A VOR receiver and a Marker Beacon receiver

Answer: (C)

Rho/Theta capability means you have both the distance to a station (range) and the direction to that station (bearing) from your position. A DME supplies the range to its station, while a VOR supplies the bearing (the azimuth) relative to that same station. When these two are paired in a single nav setup—typical VOR/DME—you can determine your location using polar coordinates: how far away you are and in what direction the station lies. The other configurations either provide only bearing or only distance, or involve equipment (like ADF or marker beacons) that don’t give the necessary combination of range and bearing to the same reference. Thus, a VOR receiver with a DME best provides rho/theta capability.

Rho/Theta capability means you have both the distance to a station (range) and the direction to that station (bearing) from your position. A DME supplies the range to its station, while a VOR supplies the bearing (the azimuth) relative to that same station. When these two are paired in a single nav setup—typical VOR/DME—you can determine your location using polar coordinates: how far away you are and in what direction the station lies. The other configurations either provide only bearing or only distance, or involve equipment (like ADF or marker beacons) that don’t give the necessary combination of range and bearing to the same reference. Thus, a VOR receiver with a DME best provides rho/theta capability.