Jeff, many thanks for posting this.? I've known W1HIS for decades, though I haven't seen him in at least 10 years.? I always knew him as Chuck, a professor at MIT, and never knew he was a ham!

Fun fact - Chuck was the principal inventor of differential GPS, which enabled measurements with millimeter-level accuracy back in the early 1980s when the US government was still "fuzzing" GPS satellite transmissions.? In 2008 the American Geophysical Union awarded him the Charles A. Whitten Medal for this invention.

开云体育

Jeff,

it seems that it never arrived. The folder is there, but it has no files within. Do you want to try again?

Cheers, 73,

Robin, G8DQX

Jeff,

I took the liberty of uploading to your folder a zipped folder that Chuck sent to me a couple years ago.
It contains the description of his B-field loop for RF current sensing.? I hope this is the same set
of documents that you tried to upload.? It appears to have uploaded successfully, but I have not
unzipped the folder to post individual files within it.

73,
Mike, K8CN