NBC O&O KXAS and co-owned KXTX (Telemundo) in Dallas-Fort Worth have selected a pair of Rohde & Schwarz 78kW solid-state UHF transmitters in preparation for the TV spectrum repack and ATSC 3.0.
The goal of the project, NBCUniversal said, was to supply twice the output power of the broadcaster’s old IOT transmitters to support Variable Polarization Technology (VPT), which NBCU selected for the stations’ new antenna.
The new R&S THU9 transmitters will continue to deliver 100% output power when switched to the ATSC 3.0 TV standard.
The new liquid-cooled solid state Rohde & Schwarz transmitters will replace the IOT transmitters currently in use.
“The liquid-cooled solid state design requires a fraction of the air conditioning required for IOT operation due to its extremely low heat dissipation in the building. This is a big factor for us in Texas during the summer months,” said Matt Varney, station VP of technology.
The R&S THU9 can be rechanneled without going off air to replace amplifier components or to make the change, something that makes replacing a transmitter prior to receiving a new channel assignment more palatable. With the tunable RFS mask filter, the system is ready for the repack, the stations said.