Jack Rhodan6 years ago000Is it possible to run 2 of these sets without interference to increase the total to 4 microphones?Show in original language (German)willi116 years ago • purchased this product000purchased this product Helpful answerNo, unfortunately this is not possible. The two radio frequencies used are fixed to ISM2 (864.375 MHz) and ISM3 (864.850 MHz). Operating the same thing again therefore interferes with each other.Show in original language (German)Comment2 comments