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Reviews (3)
Jul 12, 2018
Who knows if it is any good? I can't make it work. Might be good for mindreaders.
1 of 1 found this helpful I'm so sick of junk like this. It came with no information, no documentation, no website. Would it kill them to include a scrap of paper with a website address? What do the 3 audio jacks do? Which one is audio in? What do the buttons do? What do the pots adjust? Two of the jacks are labeled with illegible chinese. What power does it take? It does have "9V" silkscreened on the board, but what polarity? There's no protection diode, so if I guess wrong I've smoked it. Now I have to reverse engineer the thing just to power it up, but the bottom is completely covered with silkscreen ink to make it hard to follow the traces.
On the positive side, the mounting holes helpfully have a silkscreened picture of a screw next to them so I know what they're for. Thanks for that.
Sep 10, 2018
Won't phase lock
1 of 1 found this helpful This GPSDO is a great price, and I bought two of them, but unfortunately there's something wrong with the software. It won't phase lock to the incoming GPS signal. It is fine if all you need is a frequency source within a hundredth of a Hz or so of 10MHz, but if that's all you need, just use a rubidium or tcxo. A GPSDO should be much better than this. Since it doesn't phase lock, it drifts constantly so is unusable for time-of-day clocks or other timing systems.
If you put the output of this reference up against another GPSDO such as a Thunderbolt on an oscilloscope, you can watch the phase of the output drift in real time.
If you do a search for these units you'll find others talking about this.
Jul 21, 2020
Just what I was looking for
I needed a condenser mic and they aren't that easy to find. Worked great for my project.