Given the open construction and the relatively high power it's not surprising this was an RFI source. The model mentioned in this story draws 560-590 continuous watts and is typically powered by a PC ATX power supply. https://arstechnica.com/information-technology/2018/02/bitcoin-miner-in-nyc-home-interfered-with-t-mobile-network-fcc-says/ 73, John NU3E