RF Dummy load 50 ohm by CN8BY

- Homemade and Low Cost  RF dummy load

Hi everyone i would like to share my homemade dummy load 50 ohm / 250w 

i use an old power amplificateur four CB radio and 50 ohm/250w resistance i brought from Ebay for 4$ i tested on HF/VHF bands it's working great with SWR less than 1.2 ,  see the pictures :

(Sorry for my antenna analyzer he need calibration for resistance meter but the swr meter working well ).

 

voltmeter by flowcode 7seg

voltmeter by flowcode 7seg

My PLC hom-made

My PLC hom-made

Automate Programmable Industriel

I've manufacturing PLC by  Microcontroller  16F628A

I have tried it and gave great results and I've attached some pictures of the manufacturing process and the video of the experience that you have made

after printing the schema on copper board

we put it in a solution of ferric chloride

then we wash the board and cleaned from toner