From the Albrecht CB Magnet Antenna MINISTAR 27 one should not expect too much to. An antenna is "alive" and others of their length, and the long MINISTAR is not. It is sufficient for driving in a column, short radio link and as a test antenna. (Note counterweight!) The magnetic base of scarce 30mm diameter I'd no more than a speed of 100 - 110 km / h confidence. In addition, you can shorten them and use them for other wavelengths.
