Homemade 1500W dummyload

 

My old dummyload from MFJ has been outside for 15 years now
When I checked it I saw it was seriously rusted on the outside

 

 

 

 

 

 

 

As you can see here it is coming to the end of its life

 

 

So I went looking for empty paint pots so I could restore it

 

 

 

The ones I bought are a little longer than the original MFJ ones but not a big issue

After opening the old MFJ I have to say it didn’t look that bad inside

 

 

After I opened the old MFJ I have to say it actually didn't look that bad on the inside

The oil looks like new inside the dummyload and the inside is clean sparkling no water inside even after being outside for 15 years

Only the outside is rusted so I thought I could put it outside again for a few more years

To protect it I sprayed it with paint

Then I used new paint pots I had lying around in my junk box over the years

 

 

 

 

 

 

 

 

 

 

I found 4 × 50 Ohm resistors lying around the only difference is the MFJ ones are 90 watts mine are 60 watts

Also I had one resistor of the same type MFJ uses (MFJ-115 1500 resistor)

We had the paint pots so they can finally prove useful and I started building again

It didn’t take much time to make this dummyload

The SWR looks okay

I already made a second one and since I have four resistors I made two more

The cost without oil was about €15 per dummyload