Hi Dan, I remember seeing the list of checks to make regarding knockoff clones, and even remember a few of them: to wit:
1. Comes in molded packaging, not poly foam. Check! 2. Has the internal shielding. Check! 3. Passes all the self tests, including 7 & 8. Check! I had high hopes of moving the birdie off 10 MHz by changing the IF frequency setting, but this did no good. I'd sure like to see a detailed block diagram, but do not know where to look. I also tried turning on the "spur eliminator", which did help by several dB, but my birdie still sits a few dB able the displayed noise floor in the narrowest available resolution BW of ~ 3 kHz. So, for the moment, I'm out of ideas. Thanks, Dana On Sun, Jan 17, 2021 at 5:21 PM Dan Kemppainen <d...@irtelemetrics.com> wrote: > Dana, > > Just an FYI. Apparently, there are knockoff clone copies of the TinySA > out there. (Yes, making a knockoff clone of a $50 spectrum analyzer is a > thing, go figure!) > > Apparently, these have substandard performance, and a host of > issues/concerns. I ran into this on the TinySA web site. They have some > hints on how to detect if you have a clone or not. Might be worth > looking into to see if you have a sub-par copy. > > Dan > > > > > On 1/16/2021 12:00 PM, time-nuts-requ...@lists.febo.com wrote: > > Date: Sat, 16 Jan 2021 05:45:19 -0600 > > From: Dana Whitlow<k8yumdoo...@gmail.com> > > To: Discussion of precise time and frequency measurement > > <time-nuts@lists.febo.com> > > Subject: Re: [time-nuts] Leakage, tinySA > > Message-ID: > > <CADHrwpd2B=p= > qrjlg-bw68wgdahmlhe9qulpupijuqedapz...@mail.gmail.com> > > Content-Type: text/plain; charset="UTF-8" > > > > Another data point: My newly-received TinySA has a big birdie at 10 MHz, > > which is a > > disappointment since I had hoped to use the unit as a sniffer to track > down > > leaks in my > > 10 MHz distribution system. This birdie in the TinySA persists even when > > nothing is > > connected to the input and does not vary in amplitude when I move around > > the house, > > or with time while I'm sitting still with the unit. > > > > I, too, received no manual. > > > > Dana > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.