Description: The UMH 300 is a high-quality and cost-effective QAM modulator. It combines the excellent RF specification with extended transport stream proceesing and monitoring in a 1RU device. The UMH 300 QAM modulator supports a full range of variable bit rates and QAM constellations, while the output up-converter is fully agile allowing any CATV outputfrequency.Features: Fully ITU-T J.83 Annex A & Annex B support