Dielectric has added to its OptiLoad line, expanding the family of load solutions to detect and prevent transmission system failures in liquid-cooled UHF and VHF TV systems.
“Those innovations deliver a convergence of passive RF equipment, electronics and sensing that Dielectric has now adapted for radio and less rigorous UHF environments,” the company said.
OptiLoad FM is a version for radio. Dielectric says it retains the original’s footprint and architecture, which is notable given the wavelength differences between FM radio and UHF TV. Its intended uses include high-power FM sites with multiple stations feeding into one master antenna.
Also new is OptiLoad Light, a lower-cost solution for UHF systems with fewer failure points in the monitoring infrastructure.
OptiLoad systems are built around a water column building block, to which Dielectric adds a heat exchanger, creating a closed-loop cooling system that prevents the exposure of liquid coolant.
Programmable logic controls sense rising RF power and temperature levels, prompting the system to act across several operating modes. It will transition to standby mode without RF power present when coolant temperatures are less than 130 degrees. When temperatures land between 130 and 150 degrees, OptiLoad initiates flow from the high-efficiency circulator pump. Fans are activated when the temperature surpasses 150 degrees.
Engineers can use OptiLoad as a station load when they need to test the transmitter or isolate the transmission line and antenna to identify and solve a problem. OptiLoad awakens and ramps up to full power if the load is being utilized, offsetting electricity costs and reducing power bills.
The three systems now include SNMP functionality, allowing the transmitter to do a daily handshake. If that does not occur the station will be notified.
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