Re: 11801C and the T1331 error: lost factory TB calibration data.
On Sun, Aug 25, 2019 at 12:54 AM, Dennis Tillman W7PF wrote:
A few years ago I visited Agoston Agoston in Beaverton. I'm not sure when heI have probably concluded it rather than established it. In 1987 Aki was with Tek, in 1992 he was already with Hyperlabs. 11800 came out in late 1980's?
Agoston Agoston is listed as an inventor in dual TDR head design https://patentimages.storage.googleapis.com/6e/80/e3/84f58712244c9d/US4755742.pdf which is, essentially what SD-24 is http://w140.com/tekwiki/images/f/f0/SD24_4.jpg