[Elecraft] Product Suggestion - 500W Dummy Load

[Don Wilhelm]

My "gallon size" dummy load is not a Heath, but that was inspiration for 
mine.  I came across a bunch of 620 ohm 20 watt carbon resistors a long 
time ago.
I wired 12 of them in parallel and put them into a gallon can of mineral 
oil.  That dummy load still measures 51 ohms over the bands from 80 thru 
10 meters with a minimal amount of inductance - and it is over 40 years 
after I first built it.

I figure since it will do 240 watts in open air, in the oil, it should 
take the legal limit for relatively short periods, but I have not 
subjected it to more than 500 watts.

Yes, I have heard stories about how the Heath resistors changed value, 
but my 'substitute' has not changed over the years.

73,
Don W3FPR

On 9/17/2015 10:36 PM, Fred Jensen wrote:
> Strangely, these non-inductive resistors do not last forever.  When I 
> came home from SE Asia to Houston in 67, I filled my Heath  with 
> mineral oil [interesting story on a Sunday], and it measured 51 ohms 
> DC.  Today, it measures 74 ohms DC.
>