Somebody here was asking for the SWR of this beam since there is no curve on its manual,but the specified on the bandwidth by Cushcraft is 150 Kcs for 1.5 SWR and 250 Kcs for 2 SWR ,minimum 1.1:1. Fernando,XE2FL -- Saludos Cordiales, Ing Fernando Muguerza EQUIPOS INDUSTRIALES Y EDUCATIVOS Cel:811 589 2930