MFJ Enterprises Original MFJ-260C Dummy Load, 300 Watt, 0-650 MHz, Dry

Works very well... There was nothing to dislike about it...Does exactly what it supposed to...

Perfectly meet my requirements.

Easy to use and exactly what I expected!

This dummy load was DOA (dead on arrival). I tested with an ohmmeter and then with a Nano VNA, it was open circuit. I took the case off and inspected it, and did some probing with the ohm meter, the actual big fat resistor was 51.5 ohms, which was within the specification, that was not the issue. The problem is that one end of the resistor clamp relies on a push fit contact with the aluminum case for the return earth path. Aluminum oxidizes to produce aluminum oxide (AL2 O3) with is an isolator, so there is an insulator between the 50 resistor and the case. Ive read other reviews where people have fixed it, well aluminum can oxidize in as little as 1 month so I would not trust that fix. Im not going to risk my $1000 transceiver on this piece of junk. This is a very poor design, has a fatal error and can only be fixed by installing a dedicated copper earth return wire back to the connector. So I guess its true what I read online MFJ = Mighty Fine Junk

This dummy load performs well and I use it whenever I am on the air with a Collins 32S-3 running 150 watts CW or a Yaesu FT-101B. I switch it in with an MFJ-1700B multi-port transmitter/antenna switch and its been functioning perfectly for almost a year. I installed it, put it under the operating desk and never had to look at it again - and thats the way it should be. NOTE: This dummy load is labeled as 300 watts and the derating curve gives it 60 seconds at 300 watts on a continuous duty cycle. When I use it for tuning it heats pretty well in under a minute with only a few continuous seconds at any time (I would estimate a 30% duty cycle). Sometimes this is a short time to tune-up old technology tube equipment like the Collins. This dummy load can do a max of three minutes at 25 watts continuous so the rating probably should be closer to 100 watts where the derating curve shows about 90 seconds of a continuous duty cycle. Whatever. Its a great accessory and I wish more people would use it to tune up before going on the air.

Well made and good quality. Works as it should.

Built tough and durable like all MFJ components.

Got it for my barefoot 7300. Itll be awhile before I can add an amp to my station, so this is fine for me for now. Radio saw 50 ohms, and I was able to play around and tweak my audio settings before putting my radio on the air. It did its job; I am happy with it.

great package and concept but measured 42 ohm not 50. I tested several other I have all are 50+- 1 ohm but 42 is a large departure.

This unit was well packaged and shipping was fairly quick. I use this dummy load to test and adjust ham radio antennas and it does a good job. MFJ gives you a one year no matter what warranty.