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Phase curve - explanation
Hello guys, I¡¯m extensively playing with my Nano.. Could anybody help me to understand the phase curve? It¡¯s clear that is shows resonance point when there is rapid change in phase (almost
By Stepan Synek · #10740 ·
Re: Portable full 2-port 6 GHz VNA from YL3AKB
I agree as well; the ability to work with 5.8Ghz / 3.6Ghz gear is pretty important to me and I assume would gather a lot more interest from WISPs (and other related commercial /hobby interests). The
By Gus Osborne · #10739 ·
Re: Correct measurement procedure for a single quartz crystal
The problem with measuring crystals is that the nano does not have small enough frequency increments to characterize such a high Q device. What I did was connect the crystal from the first port to
By Bob Albert <bob91343@...> · #10738 ·
Re: Worst nanovna clone
Yes..it has blue PCB with version marking as nanovna- h v3.3 Thank you very much for clarifying...
By Praba Karan · #10737 ·
Re: Portable full 2-port 6 GHz VNA from YL3AKB
Exactly my thoughts Bob! A 6GHz capable unit is high on my priority list for the same reasons. 73, Randy NC8U
By Pomology · #10736 ·
Re: Portable full 2-port 6 GHz VNA from YL3AKB
There is lots of discussion in this thread about what the market is. I understand there is a calculus regarding cost vs how units will sell and there exists a perception of what the community wants
By Bob KV4PC · #10735 ·
Re: #nanovna-h4 stops at boot screen #nanovna-h4
Hi Herb Thank you for the comment. I like you sense of humor ? Kind regards Kurt -----Oprindelig meddelelse----- Fra: [email protected] <[email protected]> P? vegne af hwalker Sendt:
By Kurt Poulsen · #10734 ·
Re: Correct measurement procedure for a single quartz crystal
TO get 1hz resolution with 101 points you need very narrow sweeps so VNA-saver is likely the tool to do that. Even with 10hz that only 1000hz sweep and likely not wide enough. Also if you sweep too
By aparent1/kb1gmx <kb1gmx@...> · #10733 ·
Re: Correct measurement procedure for a single quartz crystal
I use this formula for the motional capacitance: Cm = (f1 - f2)/(2*PI*f1*f2*Rt) Where f1 and f2 are the upper and lower 3 dB points, so you could just say BW for f1 - f2. In the denominator, f1*f2 is
By Nick Kennedy · #10732 ·
Re: Issue with nanoVNA-Saver in at least the last several versions.
Oristo and Alan, When I started I thought this was a problem in both VNAs. But, you are right. I will post it on the other group. There remains an issue with nanoVNA-Saver and how it treats a response
By Bryan, WA5VAH · #10731 ·
Correct measurement procedure for a single quartz crystal
Hi all, I wonder which is the correct procedure for testing a Crystal quartz. Nano VNA has 0.6.0 firmware version and on PC NanoVNA Saver 0.2.2-1 is running . A bit naively after calibration in the
By stefano bello · #10730 ·
Re: Issue with nanoVNA-Saver in at least the last several versions.
I am not familiar with the F model details. As Oristo states, try the post there. However, it sounds like the root cause of the problem is up setting the calibration. Or resetting the cal to the point
By alan victor · #10729 ·
Re: Portable full 2-port 6 GHz VNA from YL3AKB
Reading this thread about market, sales, prices and specs. I'm a radio amateur who appreciates good equipment. What I see at several radioclubs in the Netherlands (EU) is that the low priced nanoVNA
By Arie Kleingeld PA3A · #10728 ·
Re: Firmwares
Gentlemen, this topic has nothing to do with the title. Please open a new theme, this is not a firmware specialty theme. thanks, Gyula HA3HZ
By Gyula Molnar · #10727 ·
Re: Firmwares
Hello The Output Multisynth Divider (OMD) in the Si5351A has a minimum division of 4, see the datasheet reg. 44 and +8 for the others. The use at 300 MHz, well above 200 MHz, is out of spec. But like
By Bo, OZ2M · #10726 ·
Re: Issue with nanoVNA-Saver in at least the last several versions.
Yes, you posted this in the wrong group. Instead, try one of these: /g/nanovna-users/wiki/home#nanoVNA-F
By Oristo · #10725 ·
Re: Issue with nanoVNA-Saver #nanovna-saver
Hi Bryan, thanks for pinging me - I'll get on it as soon as things quiet down a little more here at work. Should be able to look at it later today or tomorrow :-) -- Rune / 5Q5R [email protected]>
By Rune Broberg · #10724 ·
Issue with nanoVNA-Saver #nanovna-saver
Rune, Could you check the sequence of posts at /g/nanovna-users/message/10627. There seems to be an issue with nanoVNA-Saver that should be easily fixed. Thanks -- Bryan, WA5VAH
By Bryan, WA5VAH · #10723 ·
Re: Issue with nanoVNA-Saver in at least the last several versions.
Alan, I re-calibrated the nanoVNA-F with a single load on PORT2 for the isolation calibration. I have been looking at the nanoVNA-F response with both ports terminated in 50-ohm loads for several
By Bryan, WA5VAH · #10722 ·
Re: Issue with nanoVNA-Saver in at least the last several versions.
Alan, Great measurement. It is pretty clear that your VNA is not having the issue that I am seeing. -- Bryan, WA5VAH
By Bryan, WA5VAH · #10721 ·