MOBILES EMPFANGSGERAET MIT EINER FUNKTION ZUR INFORMATIONSGABE UEBER DIE ELEKTRISCHE FELDSTAERKE.

摘要

The mobile receiver unit has a level detector outputting a level detection signal corresponding to an electric field intensity. An information producer signals to a user information of geographic gradient of the electric field intensity on the basis of an output signal from the level detector. The level detector has a memory for storing the level detection signal. The level detection signal is compared with a delayed level detection signal for generating a difference signal. The geographic gradient of the intensity is displayed on the basis of the signal from the comparator. An information display includes a pattern representing a toward which a vehicle must travel.