Some sad new arrived this morning via QRZ.com and the AM Window: Jim Tonne W4ENE has passed away:
Jim was a prolific software developer for radio amateurs. He was the source of the Elsie program used by so many of us.
I had a very useful e-mail exchange with Jim in 2022 about envelope detectors. Much of the exchange was about a 2012 article that Jim wrote on this subject. I was looking for it just today. Unfortunately Jim's software business (and his websites) are all apparently tied up with the executor. I can't access them.
Does anyone out there have a downloaded copy of Jim's 2012 article on Envelope Demodulators that they could send to me?
It is a tribute to the contributions made by a radio amateur that even after his passing people are scrambling to find his articles and his software. Condolences to Jim's family.
try the wayback:
ReplyDeletehttps://web.archive.org/web/20220429224036/http://tonnesoftware.com/appnotes/demodulator/EnvelopeDemodulators.pdf
Best Regards,
Chuck, WB9KZY
Bill :This may or may not help. Go to archive.org and enter https://www.tonnesoftware.com/ into the Wayback Machine. You then need to guess when that paper was published. I did a prelimimary seach, found other papers and apps he wrote, so maybe in that pile you will find it----GL es 73's de WN2A
ReplyDeleteP.S. I see that Zack, W1VT just posted that same suggestion on QRZ.com ! Wow! Hello Zack from WN2A ex-KA2HZA!
Thanks guys! The Way Back machine archive once again proved its worth. The article I was looking for was the one cited by Chuck WB9ZKY: https://web.archive.org/web/20220429224036/http://tonnesoftware.com/appnotes/demodulator/EnvelopeDemodulators.pdf
ReplyDeleteI have downloaded it.
73 Bill
Look in your Inbox, Bill.-WN2A
ReplyDeleteBill -
ReplyDeleteIt's too bad that Jim didn't include this MOSFET circuit in his paper:
https://www.arrl.org/files/file/Technology/tis/info/pdf/culter.pdf
I wonder how the low level distortion compares ?
Best Regards,
Chuck, WB9KZY