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Is your RAW traces healthy?
#stability
#shielding
Mine have no "CH0" markings, without shield.
Here is test conditions for NanoVNA and NanoVNA-Q variants. ------------------------------------------------------------------------------------- clearconfig 1234 reset pause offset 5000 threshold 300000000 edelay -0.00000000000001 sweep 10000 1500000000 101 cal reset trace 0 logmag 0 trace 0 scale 15 trace 0 refpos 7.46875 trace 1 logmag 1 trace 1 scale 15 trace 1 refpos 7.53125 trace 2 delay 0 trace 2 scale 0.000000001 trace 2 refpos 3.96875 trace 3 phase 1 trace 3 scale 90 trace 3 refpos 4.03125 marker 1 20 300008000 marker 2 40 600006000 marker 3 60 900004000 marker 4 80 1200002000 resume #dac 1922( Two variants were same DAC values / Did not changed ) ------------------------------------------------------------------------------------- * Test with latest( As of Nov.11 ) firmware variants. * NanoVNA_0.4.0-e6035a5(Left) * NanoVNA-Q_0.4.3-5-ga81ab10( Right ) * Both CH0/CH1 did not connect anything What is your HW variants and your RAW traces? |
Re: Would like to buy NanoVNA
#nanovna-matlab
Thank you for all the fast replies.
I will check Alibaba link. -- Regards, Erhan, TA1LSX, 73 |
Re: Would like to buy NanoVNA
#nanovna-matlab
Pay attention to the seller's note:
"Recently, European customers responded for DHL's import fees. If you want UPS or other service, please contact me online or leave messgae on feedback or by email. We will check more for you. sales11<at>zeenko.cn" |
Re: Would like to buy NanoVNA
#nanovna-matlab
Hi Erhan
To be dead sure bye this NanoVNA-H form Alababa.com. It has the low loss female female adaptor included and arrives via DHL within one or two days Kind regards Kurt -----Oprindelig meddelelse----- Fra: [email protected] <[email protected]> P? vegne af Snowist Sendt: 12. november 2019 11:26 Til: [email protected] Emne: [nanovna-users] Would like to buy NanoVNA #nanovna-matlab First of all apologize if I'm repeating the same question. But I browsed many messages to see howto buy, but lost in topics. I would like to buy Hugen version but could not able to manage buying from Tabao site. Then I found a product in Aliexpress claiming @Hugen version in description. But I need to make sure it is real Hugen version If Hugen can see my message here I can pay via Paypal or Payoneer directly and send my postal address or can get it from Aliexpress if he has official sales in there. -- Regards, Erhan, TA1LSX, 73 |
Would like to buy NanoVNA
#nanovna-matlab
First of all apologize if I'm repeating the same question. But I browsed many messages to see howto buy, but lost in topics.
I would like to buy Hugen version but could not able to manage buying from Tabao site. Then I found a product in Aliexpress claiming @Hugen version in description. But I need to make sure it is real Hugen version If Hugen can see my message here I can pay via Paypal or Payoneer directly and send my postal address or can get it from Aliexpress if he has official sales in there. -- Regards, Erhan, TA1LSX, 73 |
Re: NanoVNA vs. NanaVNA-Saver
#calibration
On 08/11/2019 15:18, Nick wrote:
Thanks Rune. I did not understand the relationship between devicecals and nvna-s cals. up the cables and do a device cal over that frequency range using an appropriate cal kit. I save that cal to say C0. same frequency range, same cables, same cal kit and save it to cal_0.cal. nvna-s with as many data points as I like using multiple segments. Yes Let's say I then want to measure a UHF filter over the range 100MHzto 900MHz. Obviously I cannot use C0 and cal_0.cal. So I set up with different cables and a different cal kit. I do a device cal over that frequency range and save it to C1. No. According to my understanding from Rune. On connection nvna-s reads cal data from Memory 0 only, so unless your calibration originally covered the whole of the frequency range and was saved to C0 then as far as I understand that would not work. With C1 selected on the device, I repeat the cal on nvna-s using thesame frequency range, same cables, same cal kit and save it to cal_1.cal.. nvna-s with as many data points as I like using multiple segments and save the results to s*p files. range, say 400 to 500MHz? to 200MHz? not.) I would say that unless you make a full span course cal and use that from C0 then you would need to save manual cals for the other ranges and store them in C1..C3 and copy them to C0 before disconnecting from the nvna and reconnecting to pick up each new cal from C0. Maybe Rune can clarify whether or not I have misunderstood his comments in Barry G4MKT |
Re: Wait for NanoVNA-V2.....
Do you remember those huge Fresnel lenses that used to be sold so you could 'enlarge' your 14" TV to 30" or more??
?Maybe someone should design a 3d printed housing for the NanoVNA with a Fresnel lens over display ? On Mon, 11 Nov 2019 at 7:06 PM, hwalker<herbwalker2476@...> wrote: On Mon, Nov 11, 2019 at 03:47 PM, Larry Rothman wrote: Larry, Thanks for the clarification.? Too bad there isn't a similar 4 or 5 in display, although at that size I would think you would want more pixels instead of larger ones for better resolution. - Herb |
Re: Wait for NanoVNA-V2.....
On Mon, Nov 11, 2019 at 03:47 PM, Larry Rothman wrote:
Larry, Thanks for the clarification. Too bad there isn't a similar 4 or 5 in display, although at that size I would think you would want more pixels instead of larger ones for better resolution. - Herb |
Re: Any plans to publish the NanoVNA board files
On Mon, Nov 11, 2019 at 08:43 PM, <dhu1342@...> wrote:
I made both versions. After communicating with edy555, I changed the nanovna label to nanovna-h label. You can check the nanovna-h label under the battery. |
Re: Wait for NanoVNA-V2.....
Herb,
The slightly larger display that Herman installed is identical to the 2.8" it just has bigger pixels. The resolution and driver IC are the same as in the 2.8" LCD. Hence the direct swap.? On Mon, 11 Nov 2019 at 5:55 PM, hwalker<herbwalker2476@...> wrote: Herman, The 2.8 in display uses a 320 * 240 * 2 bytes to transfer data and I assume the 3.2 in display requires more.? Therefore I am? I right in also assuming that program features that depend on display size, such as screen capture, do not work correctly with the 3.2 in display? Not a big issue since you can always use your smartphone camera to capture a screen image, but it is a caveat when stating that the 3.2 works with the same software, - Herb |
Re: NanoVNA does not want to start -solved
Yes, but now you created another problem for the rest of us: you didn't post the link where you purchased the new chips from ?.??
Thanks for playing around with this until you solved it.?? RegardsLarry On Mon, 11 Nov 2019 at 5:42 PM, Herman De Dauw<on1bes@...> wrote: After almost half a year of using my NanoVNA that did not want to start with the on / off, an old problem has been solved. After replacing the IP5303 earlier, my NanoVNA still did not start (the IP5303 did not see the increased power when switching on). Now I have received a number of IP5305, and have placed one of them in the NanoVNA. After this procedure, the NanoVNA wanted to start up normally for the first time, and all functions of the IP5305 function normally. The device is now fully portable with battery. Problem solved. on1bes Herman |
Re: My NanoVNA is not recognised by DFUse wh
This UmbrelaSmart app does recognise and display the NanoVNA usb info in DFU mode and it does perform a full erase.
It might be the version number coded into the DFU file. I'm going to try playing with that.? BTW, there is a java disassem that I've been playing with from the Play store.It's called Show Java.? Show Java - A Java Decompiler - Apps on Google Play | | | | | | | | | | | Show Java - A Java Decompiler - Apps on Google Play A decompiler to extract the source code of an APK (android app), jar & dex file. Features ? Select either CFR 0.138, JaDX 0.8.0 or FernFlower (analytical decompiler) to use as the decompiler. ? Runs directly on your android device ? Select apk/jar/ | | | | On Mon, 11 Nov 2019 at 4:55 PM, Oristo<ormpoa@...> wrote: >> I found this GitHub project for DFU installation by Android app ? I've been trying to get this working - keeps coming back and saying the IDJust as well; source includes comments like: "this is limited to stm32f405RG and will fail for other future chips." Since the last commit to this was several years agoWell, it is newer than Android apps that I worked on, pre-Gradle and pre-IntelliJ IDEA. As bad as were ant and eclipse, at least Android's wretched documentation was relevant. Now, build docs badly prescribe doing things that are doomed. Thanks at least in part to Gradle, it appears no longer possible to publish a GitHub Android project that can be simply cloned and built - there is most likely some bugs introduced by newer version of Android.I expect bugs in this Java.? If I eventually sort build issues, then it can be tested on nearly the oldest Android device with USB OTG. |
Re: Wait for NanoVNA-V2.....
Herman,
The 2.8 in display uses a 320 * 240 * 2 bytes to transfer data and I assume the 3.2 in display requires more. Therefore I am I right in also assuming that program features that depend on display size, such as screen capture, do not work correctly with the 3.2 in display? Not a big issue since you can always use your smartphone camera to capture a screen image, but it is a caveat when stating that the 3.2 works with the same software, - Herb |
Re: NanoVNA does not want to start -solved
After almost half a year of using my NanoVNA that did not want to start with the on / off, an old problem has been solved. After replacing the IP5303 earlier, my NanoVNA still did not start (the IP5303 did not see the increased power when switching on). Now I have received a number of IP5305, and have placed one of them in the NanoVNA. After this procedure, the NanoVNA wanted to start up normally for the first time, and all functions of the IP5305 function normally. The device is now fully portable with battery. Problem solved.
on1bes Herman |
Re: Wait for NanoVNA-V2.....
I recently replaced my display with a 3.2 version that works with the same software (see the Wiki Files). Replacement with an even larger display is not possible without rewriting the firmware. And currently almost all memory space is used, I see that does not happen immediately. So I'm also waiting for the V2 version, and hope for a larger display.
on1bes Herman |
Re: My NanoVNA is not recognised by DFUse when using V 0.2.3 firmware
I found this GitHub project for DFU installation by Android app I've been trying to get this working - keeps coming back and saying the IDJust as well; source includes comments like: "this is limited to stm32f405RG and will fail for other future chips." Since the last commit to this was several years agoWell, it is newer than Android apps that I worked on, pre-Gradle and pre-IntelliJ IDEA. As bad as were ant and eclipse, at least Android's wretched documentation was relevant. Now, build docs badly prescribe doing things that are doomed. Thanks at least in part to Gradle, it appears no longer possible to publish a GitHub Android project that can be simply cloned and built - there is most likely some bugs introduced by newer version of Android.I expect bugs in this Java. If I eventually sort build issues, then it can be tested on nearly the oldest Android device with USB OTG. |
Re: Duplexfilter tuning question
Yes, I checked it when I came home, I use different modes.
But, the attenuators are on the way, so I can test more deep then now is possible. What a nice software, that's what I mean, with this software I can tune more accurate. Nice things to study and learn! Thanks for the link QRP RX! |
Re: coax fatigue
#test-jig
All network analyzers that I have worked on (repaired, calibrated and use nearly every work day) since 1977 (8409, 8505, 8753, 8510.......) have the test ports connected to and thru the same front panel (built in or on the S-parameter test set). I see absolutely no reason to isolate them on the nano. I have not used the isolation part of the cal yet but isn't that the reason for doing isolation?
I thought about mounting my unit in an enclosed box as well but I had this old HP radar test set with everything right there and ready to go plus I do every thing at HF and have not seen any leakage problems there. K6JCA's set up looks nice but I again I see no reason to separate the connectors. It might even lead to cross talk when doing S21 creating a ground path loop. Last night, after finally getting a second HF antenna lashed up before the winter snows, I checked the isolation between the two antennas using S21 for the first time (except for a quick functional check when I rec'd the nano in late August). On 40 meters there is only 20 dB of isolation and on 20 meters and 160 meters there is about 29 dB of isolation. For each band I retuned the transmatch on the one antenna that needs a transmatch. When I de-tuned the transmatch even by a small change, the coupling dramatically decreased showing the impedance match was critical for max radiation from one antenna into the other. |
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