MFJ 260C dummy load question

[Cabover Bob]

Scored an MFJ 260C used. Read some Amazon purchase reviews that stated that theirs had an open circuit out of the box. How can I test this piece before transmitting into it ? I know......Mighty Fine Junk.......

 

[Ranch55]

Using an ohm meter ......
One lead to the center conductor, other lead to the outer conductor.
Should read 49 ~ 51 ohms .......
If it's too far out of range, will need to replace the resistor element inside. Which if you open it up, the big carbon element resistor should have an MFJ part number on it.
My MFJ 1500 watt dummy load does. I have replaced the resistor element in it once, about two years ago.

 

[Cabover Bob]

Using an ohm meter ......
One lead to the center conductor, other lead to the outer conductor.
Should read 49 ~ 51 ohms .......
If it's too far out of range, will need to replace the resistor element inside. Which if you open it up, the big carbon element resistor should have an MFJ part number on it.
My MFJ 1500 watt dummy load does. I have replaced the resistor element in it once, about two years ago.

Thank you !

 

[groundwire]

Dmm

 

[Beetle]

Doesn't have to be a Dmm.

 

[Eldorado828]

I'd open it anyway to make sure everything is snug inside. I received a brand new one that the clamp on one end was really loose. If anything just to be sure

 

[Captain Kilowatt]

Doesn't have to be a Dmm.

I usually use a DMM but sometimes I use my AMM. Each has it's place. I prefer the AMM for continuity checks.

 

[Cabover Bob]

I'm just a dumb old Piledriver, wtf is dmm or amm ?

 

[TM86]

I'm just a dumb old Piledriver, wtf is dmm or amm ?

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