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Old 7th Sep 2019, 7:00 pm   #23
G6Tanuki
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Join Date: Apr 2012
Location: Wiltshire, UK.
Posts: 13,953
Default Re: MFJ Dummyload faulty?

MFJ was at one time said to stand for "Mighty Fine Junk".

I suspect your dummy-load may have been overcooked at some time.

At junk-sales/hamfests/rallies you come across Heath "Cantenna" dummy-loads - oil-cooled beasties built into what looks like a paint-can. These were designed for the US market where Kilowatt-capable ham radio stations were commonplace - so Cantennas can take quite a thrashing.

https://www.eham.net/reviews/detail/13123

My dummy-load-of-choice when I was designing juicy RF-stuff was a big grey-finned beastie about the size of a large load-of-bread, by "Aspen Electronics" - you occasionally see these at rallies etc and they still sell for 3-figure sums.
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