Bird - 8941-115SC13 15 kW, 230V, DC to 28 MHz, Precision RF Load 8941-115SC13, 13.56 MHz Ultra Stable Oil-Dielectric RF Termination 115 VAC Blower Assembly is a general purpose, 50 ohm, coaxial transmission line termination, useful as a standby reject load or dummy load. It provides accurate, dependable and low reflection line termination over a frequency range of DC—20 MHz. Up to 15,000 watts can be dissipated.

The loads have a coolant chamber surrounded by radiator fins. The front and rear fins form mounting flanges which can be used as supports for freestanding use or as brackets for fixed mounting. A vent plug at the top of the unit relieves internal pressure from coolant expansion and a blower assembly with three axial fans that line the bottom of the load.

product specifications:

The Bird 8941-115SC13 represents a pinnacle in precision radio frequency (RF) termination technology, designed specifically for demanding applications where stable and reliable signal absorption is crucial. This oil-dielectric RF termination load, engineered to handle up to an impressive 15 kilowatts of continuous power dissipation, operates across a broad frequency range from direct current (DC) all the way up to 20 MHz, with a maximum voltage standing wave ratio (VSWR) of 1.15:1. Its core strength lies in its ultra-stable performance, boasting less than 0.1 decibel variation in VSWR even when operating at full rated power.

At its heart, this device is built around a robust 50 ohm coaxial transmission line design, making it suitable for versatile deployment scenarios such as serving as a standby reject load or dummy load in various RF systems. The innovative cooling mechanism sets it apart—a coolant chamber encapsulated by radiator fins that optimize heat dissipation. The front and rear fins ingeniously double as mounting flanges, enabling both freestanding and fixed installations. The inclusion of a vent plug to regulate internal pressure due to coolant expansion, coupled with a high-performance 115 VAC blower assembly featuring three axial fans, ensures effective and sustained cooling under rigorous conditions.