“Powerline RFI Hunting On the Go” July 14, 2024 by admin ARRL Lab’s Mike Gruber, W1MG, hunting down a noise source Rob Leiden, K1UI, will present “Powerline RFI Hunting On the Go,” case studies involving finding power line RFI using laptop PCs, an HF transceiver, and an inexpensive GPS unit at the 2024 Northeast HamXposition.