Using this GPS active antenna is easy. First, connect the antenna to your GPS Shield. Then, place the antenna where it can get the best signal. You can use the magnetic base to attach it to a suitable metal surface. When using it indoors, make sure there are no large obstacles blocking the signal path. As for voltage, ensure it's within the 3.0 - 5.0V range. For maintenance, keep it dry due to its water - resistant feature, but don't submerge it in water. Regularly check the cable for any signs of wear and tear. If you encounter any signal issues, try re - positioning the antenna or checking the connection with the GPS Shield.