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Rating curves supplied. You need to fill the can with transformer oil (or domestic vegetable oil) used as coolant.
The dummy load is rated continuously at 15W and up to 30W max.
The dummy load is rated at 300W. Do not exceed 60-70° C. Over that value forced air blowers must be used.
The dummy load is rated continuously at 15W and up to 30 seconds before resting. Two versions, N-Type and PL-259.
This budget priced dummy load is ideal for a wide range of applications. It can be used for testing lower powered transceivers and although rated at 15W, it will handle 20W on CW.
Handles 300W for 30 seconds and lower powers proportionally longer.
The MFJ-261 connects directly to the transmitter through the PL-259 connector. No patch cable is used, this direct connection keeps losses to a minimum and reduces SWR. Cooling is accomplished by a finned aluminium air-cooled heatsink. Note that the higher the power the shorter time it should be connected.
The MFJ-261N connects directly to the transmitter through the N-type plug connector. No patch cable is used, this direct connection keeps losses to a minimum and reduces SWR. Cooling is accomplished by a finned aluminium air-cooled heatsink. Note that the higher the power the shorter time it should be connected.
Handles 100W for 10 minutes and 1500W for 10 seconds. Usable to 750MHz.
This 2500W fan assisted dummy load handles any legal limit amplifier, and lets you tune-up your expensive amplifier fast and very easily. Works with all amplifiers, transceivers and transmitters from DC through 6m. It can dissipate 2500W average power for one minute on, ten minutes off. Handles 300W continuous.SWR is less than 1.25 to 1 below 30MHz and less than 1.4 from 30 to 60MHz. Four 50 Ohm non-inductive super high energy density resistors are used. Detailed specifications and power curve are permanently silk-screened on the bronzed cabinet for easy reference. Supply 12 VDC, connector SO-239.
The MFJ-267 Dual Dummy load and VSWR meter is designed for use up to 54MHz, it will handle up to 1.5kW of power with dual range power switching, plus PEP / Average switch. For 100W applications the internal load is rated for 10 mins continuous use, reducing as the power level increases. For 400W use it can be run for 40 seconds before cooling is recommended. A switch enables the dummy load to be bypassed so that the VSWR meter is left in line to measure VSWR on the antenna. External 12V DC power is required
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