Please install the antenna on the middle of the vehicle roof in general.

Install the antenna on horizontal place of the vehicle roof to be measured, as shown in the following figure. The lower part of the antenna is made of magnet, so it can be attached to the vehicle roof directly. Please do not stick tape or anything on the upper surface of the antenna.

To prevent the antenna from dropping from the roof, please use several tapes to fix the cable extended from the antenna. When fix the cable, please be careful not to stick tape or anything on the upper surface of the antenna. Also, when you roll the cable into the vehicle, please be careful not to catch the cable in the door. It may cause cable disconnection.