Andre, when do you think the 500khz gang is going to get on the air? I'd like to try to receive their test transmissions. And, what is WD2XGI on the air 185.3025kc? --hal/wb3kdu PS thanks to everyone for the various info on the 70A shunt. Also, check out www.unitednuclear.com which has supplied for semi-dangerous radiation experiments that they will ship UPS!