The tuner doesn't affect the pattern, nor does the driven element tuning. The antenna acted like a dipole at the upper end of the band. Rick N6RK On 3/27/2018 12:44 PM, Jim Thomson wrote: > > ## IF you had left all 3 els alone... and just say used a tuner, did the FB / FR /gain drop off at upper end of band ? > Jim VE7RF >