开云体育

The January 2025 issue of QST magazine has an article about the home-brew construction of a fan cooled dry dummy load, complete with a parts list.? The total cost is said to be less than $40.? A copy of the article is attached to this email.? And the complete parts list from the ARRL web site is below.??

I think I'd like to build one of these for myself.? Is anyone else interested in building one as well?? Maybe we could make a group activity out of this little project.? Anxious to hear if anyone is interested.

John N3SPW

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Table 1 – Parts List

QTY Description Source

1 250 W 3 dB attenuator AliExpress

1 250 W 50 ? Termination AliExpress

1 StarTech 85x70x50mm CPU Cooler w/Heatsink Amazon

4 4-40 x ?” aluminum standoffs Mouser 534-1893

4 4-40 x ?” screws Mouser 534-9902

2 4-40 x 3/8” screws Mouser 534-9901

2 #4 split lock washers Mouser 616-60687-01

2 #6 self-tapping screws Mouser 534-9576

2 $6 flat washers Mouser 761-1059-SS

1 UHF connector Mouser 601-25-7350

1 6.8 pf 1KV capacitor Mouser 75-561R10TCCV68BA