Yup, a one turn loop about a quarter inch diameter at the end of a piece of coax works great for me for tracing current. The 10X probe would do just fine for tracing voltages. 73, Jerry, K0CQ On 7/15/2010 3:34 PM, Steven Kline wrote: > Couldn't you also use a scope with correct probe?? > > Steve - W5JK >