Dielectric is expanding its OptiLoad line. It plans to show a new external heat exchanger system at the NAB Show.
It extends the capabilities of the OptiLoad platform by moving heat from RF loads outside of transmitter buildings.
OptiLoad already included an internal heat exchanger, but traditionally the heat was discharged into the transmitter room, the company said. The new system moves the heat outside, which will be helpful particularly in warmer climates or in facilities where HVAC capacity is limited. And it means customers don’t have to design their own heat exchanger systems or integrate with transmitter cooling.
The system uses a two-part architecture, with an indoor RF load unit connected via hoses to an outdoor heat exchanger.
Its PLC architecture monitors RF presence, coolant temperature, pressure and system health. Pumps and fans are run only as needed for efficiency.
The system includes safety interlocks that protect transmitters by shutting down operation if coolant pressure drops below threshold levels or if temperatures exceed operating limits.
The OptiLoad family was introduced two years ago. It combines water column load technology with intelligent monitoring and closed-loop cooling. It expanded in 2025 with OptiLoad Light for lower-power TV systems and OptiLoad FM for radio applications.
NAB Show Booth: C1446
