Seems like I read an article ... QST maybe?... that thunderstorms have a high amount of electromagnetic radiation around 300kHz. Am I correct? If so an antique arc-5 could be handy as a detector. I'll try that, then brew a converter for 160 to match to my 6L6 transmitter. That could be some summer fun when the band is quiet ... or rather too noisy. 73, Mike WA5POK