The classic vector 4000 base Antenna has now been upgraded and this very latest version has just arrived with us, if you are looking for reliable long distance contacts, the new vector 4000 is for you. ¾ base station Antenna tunable from 27 to 28.5 mhz. Made of telescopic anti-corodal aluminum tubes. Its long and robust whip allows perfect performances and very good connections at distances too.