D. R. Navigation

Morse displayed as alphanumerics on screen. Training aid; practice for speed and accuracy. Automatic decode option for Morse received by radio with suitable interface. Decode, generation of preset messages, random generation for training. Speeds to 40 wpm.

Immediate indication of position obtained from either 2 or 3 RDF bearings. In the latter case, fixed marker indicates median position; flashing plot point shows the limits of the “cocked-hat” indicating the likely accuracy of the observations.