Using much of the same application technology of the standard 6700 Series, Altronic Research has developed these 50-ohm ultra high power loads for today’s technically advanced medium wave installations. These loads demonstrate excellent and stable RF characteristics during their full range of operating power. Another unique feature for the Ultra Line is that no tuning of the load is required, making installation a faster process. These loads can be ordered as an indoor or outdoor model. The outdoor units have screened louvers at the air intake and air output and a roof to provide a rain shield for the RF input connector and electrical boxes.