Yes, Jempi. Looks like.
However, apparently the manufacturer removed the Version number - and credits to DisLord before shipping - hence blank version. After the FW upgrade from the files-section I was able to see the Version number (but of course).
Thanks for the heads-up on the new release by DisLord. Thank you DiSlord @dislordlive@...
I tried SAA2N-D-211027.bin now. Preliminary check - it's definitely better - with respect to SAA-2N - in that I now see the clear SAA-2N title in the version.
Also, the touch-cal now shows a star at the corners (not a 90 Deg angle). Display points go up to 401. Still need to check the other additions/changes.
Yes, did the upgrade using NanoVNA-App. No issues. Works well.
Here's a screen shot of old and new FW (attached).
73,
Prem
VA3UMA
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There is a new version from yesterday
SAA-2N-D 211027.. just loaded, but not seen the difference yet...
Have fun
JP
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I think they are all based on Dislords Firmware, but compiled for SAA-2N
check this out
Suc6
JP
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On Thu, Oct 28, 2021 at 05:31 AM, n7wy wrote: ...still have issues with characters in the top row being insensitive to finger touch or the stylus. Bob R = N7WY Of course the characters are not what is responding to touch but rather a small area of the touch screen that should correspond to where the characters are displayed, the correspondence being determined by the touch screen calibration. If you haven't, try a screen calibration and see if it improves. On my V2 PLUS 4, I find the touch calibration doesn't work properly with Dislord's V1.0.69 firmware and I'm much better off using the default screen calibration. With the 20201013 firmware, the touch screen calibration works properly
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At Christmas time, our veterinarian provides stylus/pens to her customers. I find one very useful on H4, but still have issues with characters in the top row being insensitive to finger touch or the stylus.
Bob R = N7WY
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Re: Is my new Nano defective and noisy?
The video will give an indication of what noise to expect, particularly at higher frequencies;
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Re: Is my new Nano defective and noisy?
I'd also suggest you look over a narrower span.
Dave - W?LEV
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On Wed, Oct 27, 2021 at 11:49 PM <eugene@...> wrote: Some good ideas. The 80 meter ham band is rather noisy now, so I believe
that is certainly part of it. I put on a 50 ohm dummy load and the noise
went down, but still is about one half of a grid on the screen. And the
smith chart is about 1/4" in size, no dots. Another person pointed out
that this is an unauthorized clone, so I am figuring that between the noisy
band and the noise in the unit is where my problems lie.
--
*Dave - W?LEV*
*Just Let Darwin Work*
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Re: Is my new Nano defective and noisy?
On 10/27/21 4:49 PM, eugene@... wrote: Some good ideas. The 80 meter ham band is rather noisy now, so I believe that is certainly part of it. I put on a 50 ohm dummy load and the noise went down, but still is about one half of a grid on the screen. And the smith chart is about 1/4" in size, no dots. Another person pointed out that this is an unauthorized clone, so I am figuring that between the noisy band and the noise in the unit is where my problems lie. If you're looking at s21 with a load on CH0 and CH1, 1/2 grid of noise at -70 dB isn't unusual.
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Re: Is my new Nano defective and noisy?
Some good ideas. The 80 meter ham band is rather noisy now, so I believe that is certainly part of it. I put on a 50 ohm dummy load and the noise went down, but still is about one half of a grid on the screen. And the smith chart is about 1/4" in size, no dots. Another person pointed out that this is an unauthorized clone, so I am figuring that between the noisy band and the noise in the unit is where my problems lie.
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Thank you Prem.
Nice to see that you got the same device.
Also mine is working fine.
I think I will also update it to DiSlord fw soon.
73
Roberto IK2DID
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Thank you Ted for the information.
I think I will move to the fw you suggested soon.
73
Roberto IK2DID
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Re: Is my new Nano defective and noisy?
I suggest that you try scanning a simple, known-good load - specifically, a good 50-ohm dummy load. Then, try a 100-ohm resistor, and then a 25-ohm resistor. Then, a small capacitor in series with each of the above. If you still get inconsistent and noisy readings, you can probably figure that you have a duff unit.
Please do understand that trying to do a VNA or other analyzer run on an antenna, when the antenna is up in the air, is always fraught with complications. The problem is that the antenna will be picking up over-the-air signals, and these will mix with the return-loss signal coming from the VNA. If you've got any hams operating 75-80 meters within a few miles of you, their signals could be stronger (as seen by a VNA's receiver) than the part of the VNA's own test signal reflected from the antenna.
Any in-band noise source can cause this sort of problem... and 80 meters is a notoriously noisy band.
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Re: Would it be possible to use a NanoVNA and a RTL-SDR dongle for IF alignment of AM and FM receivers?
The tinySA has a much better and more robust signal generator and is worth every penny it costs and it's all also nice to have both devices.
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Re: NanoVNA-App 1.1.207 crashes , 1.1.206 does not
Thank you madam!
I'm new here... Tried your APP. Great!
I wish you the best.
73,
Prem
VA3UMA
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And this thread is germane to nanovana how?
Also if you are to make claims, it is perhaps useful to have
objective evidence to support the claims.
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On Wed, Oct 27, 2021 at 10:42 AM 2sheds <2sheds@...> wrote: What you have all failed to realize is that these supposedly "improved
styli" have an internal bias feature that changes your vote in spite of the
apparent vote you made.
They will also induce a small positional bias into the nanovna touchscreen
position(s) you choose that is something like a bias offset that is
actually obvious if you are observant. ;)
--
73,
AB1PH
Don Rolph
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Don't thinl so. It prints a backup paper ballot that you have to check before entering...
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On 10/27/2021 10:42 AM 2sheds < 2sheds@... > wrote:
What you have all failed to realize is that these supposedly "improved
styli" have an internal bias feature that changes your vote in spite of
the apparent vote you made.
They will also induce a small positional bias into the nanovna touchscreen
position(s) you choose that is something like a bias offset that is
actually obvious if you are observant. ;)
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What you have all failed to realize is that these supposedly "improved styli" have an internal bias feature that changes your vote in spite of the apparent vote you made.
They will also induce a small positional bias into the nanovna touchscreen position(s) you choose that is something like a bias offset that is actually obvious if you are observant. ;)
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Re: Is my new Nano defective and noisy?
Have a look at the calibration menu and make sure there is a checkmark in the APPLY button.
Also, make sure you calibrate the unit for the range you're using and save it to a specific memory slot.
Note that only memory slot 0 is used when you turn on the device.
That means if you stored your cal for your test range in slot 1, make sure to use the recall 1 prior to testing.
Finally, you can test to make sure your unit is calibrated by attaching either the short or 50 ohm cal to port 0 and ensure you see either 50 ohms (dot in centre of smith) or short (dot to the left edge of smith) - port 0 open should show a dot at the right edge of the smith.
Grab a copy of the beginners guide from the files section and browse the forum's WIKI for more info.
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On Wednesday, October 27, 2021, 07:01:12 a.m. EDT, eugene@... <eugene@...> wrote:
I am new to VNA's, so it may be an operator error.? I'm trying to use my NanoVNA, but the SWR waveform line varies about three decimal points, say 1.3to1 to 1.6 to 1 and looks like a jagged mess.? It seems to change a lot every time it scans.? Currently set up to scan from 3.5 mhz to 4.0 mhz and has 100 peaks and valleys that vary 3 to 4 grid divisions.? When trying the Smith chart, it just looks like a doughnut with a hole in it made up of lines going across.? It looks like it was made with a spirograph.? Nothing smooth about it at all, just a mess of lines.? Tried it on two working dipole antennas.? This is the VNA with two N style connectors instead of the SMA's.? Did I get a lousy knockoff?? Is it noise?? Or do I just not know how to operate it?? It is an SAA-2N version git-20201117-9659de4? built Nov 17, 2020. with FPU
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Is my new Nano defective and noisy?
I am new to VNA's, so it may be an operator error. I'm trying to use my NanoVNA, but the SWR waveform line varies about three decimal points, say 1.3to1 to 1.6 to 1 and looks like a jagged mess. It seems to change a lot every time it scans. Currently set up to scan from 3.5 mhz to 4.0 mhz and has 100 peaks and valleys that vary 3 to 4 grid divisions. When trying the Smith chart, it just looks like a doughnut with a hole in it made up of lines going across. It looks like it was made with a spirograph. Nothing smooth about it at all, just a mess of lines. Tried it on two working dipole antennas. This is the VNA with two N style connectors instead of the SMA's. Did I get a lousy knockoff? Is it noise? Or do I just not know how to operate it? It is an SAA-2N version git-20201117-9659de4 built Nov 17, 2020. with FPU
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Re: 2M 70 CM Yagi build question
FWIW: EZNEC PRO/2 will be free starting Jan 1 2022. Roy Lewallen, W7EL, is retiring and setting it free.
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Prem va3uma
Jempi ( ON7MA )
Lou W7HV
n7wy
Alistair - M5ASF
Dave
2sheds