On Thu, 02 Sep 2021 03:30:18 -0400, time-nuts-request@lists.febo.com wrote: > Send time-nuts mailing list submissions to > time-nuts@lists.febo.com Re: time-nuts Digest, Vol 209, Issue 1 > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 01 Sep 2021 13:42:38 -0400 > From: "Mike Monett" <zak@teksavvy.com> > Subject: [time-nuts] Affordable 160 GHz Sampler > To: time-nuts@lists.febo.com > Message-ID: <8d3258$53vemf@smtp11.teksavvy.com> > Content-Type: multipart/mixed; > boundary="1C2F05C9202109011342380980001" > > Conventional samplers for home brewers usually go to 1 GHz. The SD-32 > sampler for the Tektronix 11801C mainframe goes to 50 GHz. The HP 110GHz > oscilloscope costs around $1.3 Million USD, with a 10-bit resolution. Very > impressive. > > https://www.youtube.com/watch?v=DXYje2B04xE > > I have invented a new sampling technology that promises 160 GHz bandwidth, > yet is affordable to home experimenters. If you can afford an IPhone or > IPad, you can afford this sampler. > > This technology is not pie-in-the-sky. I made a basic 5 GHz version for the > University of Ludwigshafen, Germany, and they were very pleased with the > results. I am attaching images of the response compared to a > Tektronix 1502 TDR and the pcb as proof. > > This was the first prototype, and I have made significant improvements > since then. > > I have two questions for the time-nuts group: > > 1. where would a sampler with this bandwidth be useful? Everywhere. > 2. where can I find signal sources at these frequencies to check the > response? If you have such a source, you'll be interested. If not, no need. It turns out that this first appeared circa 2003, on electronics newsgroups. Google on "Mike Monett ghz sampler" (without quotes) for the stories. Such as: <https://www.electronicspoint.com/forums/threads/final-report-binary-sampler.18908/> What has changed since then? It's been almost 20 years, and undersampling is now common, often being called "operating in the Nth Nyquist zone" (ie, above the Nyquist sampling limit) or the like. Joe Gwinn PS: >

> Re: time-nuts Digest, Vol 209, Issue 1 ... > A message part incompatible with plain text digests has been removed ... > Name: COMP01.GIF ... > Note that the attachments were stripped.  Where might these be found? > JMG Hi Joe, a) For subscribers who get each posting by email in real-time, attachments are included in the emails. b) For all the subscribers who use digest mode, like you, attachments are not present in the daily digest. We are aware of this problem and are working on it. All is not lost however. The archive of all postings is here: https://febo.com/pipermail/time-nuts_lists.febo.com/ For example, click on the current month: https://febo.com/pipermail/time-nuts_lists.febo.com/2021-September/date.html For example, click on Mike's 160 GHz posting: https://febo.com/pipermail/time-nuts_lists.febo.com/2021-September/103867.html And in this archive version of his posting you will see links to his attachments. Until we get digest mode working fully, this is the best way for you to see any missing attachments in postings. For further discussion contact us at the time nuts admin address: time-nuts-owner@lists.febo.com /tvb