I can't get sensible results from it and calibration made things worse. I have had not much time to use it much, just turned it on and off a couple of times.
Picture shows what it shows about NLP-200, a 200MHz lowpass filter. The filter (and Nano V1) work well.

If you do not show the bad results and measurement method, hard to say. Sometimes a bad cable could be a source of a problem. Add the s11 and s21 measurements from both sides.

My opinion is that the  source of a problem is mostly on the operator side.

Hi looking at your screen shot you have 20200501 version firmware which is May of this year 20200926 is latest firmware I know of for your V2.2 ,find latest FWare releases on github download you find all instructions too install on VNA on github ,hope this helps ,Dave 73

> On 14 Oct 2020, at 21:04, ok1vaw <ok1vaw@volny.cz> wrote:
>
> If you do not show the bad results and measurement method, hard to say. Sometimes a bad cable could be a source of a problem. Add the s11 and s21 measurements from both sides.
>
> My opinion is that the source of a problem is mostly on the operator side.
>

Leif,
Assuming you calibrated with the standards directly connected to the port (not at the cable end) It looks like you may have an open circuit at the S11 port (open at low frequency, small capacitance at higher frequencies).  You might want to check both the cable and the board connector at that point.  Maybe swap the connections to see if it looks any different with the other cable.
--John Gord

On Wed, Oct 14, 2020 at 12:56 PM, Leif M wrote:

>
> I can't get sensible results from it and calibration made things worse. I
> have had not much time to use it much, just turned it on and off a couple
> of times.
> Picture shows what it shows about NLP-200, a 200MHz lowpass filter. The
> filter (and Nano V1) work well.

Leif try these links https://drive.google.com/drive/folders/1-JViWLBOIzaHTdwdONX2RP8S4EgWxoND You’ll have to find out which is your VNA model then follow links ,Dave 73

> On 14 Oct 2020, at 21:19, David Bradley via groups.io <bozzbradley=gmail.com@groups.io> wrote:
>
> Hi looking at your screen shot you have 20200501 version firmware which is May of this year 20200926 is latest firmware I know of for your V2.2 ,find latest FWare releases on github download you find all instructions too install on VNA on github ,hope this helps ,Dave 73
>
>
>>> On 14 Oct 2020, at 21:04, ok1vaw <ok1vaw@volny.cz> wrote:
>>>
>> If you do not show the bad results and measurement method, hard to say. Sometimes a bad cable could be a source of a problem. Add the s11 and s21 measurements from both sides.
>>
>> My opinion is that the source of a problem is mostly on the operator side.
>

Appologies wrong links. https://nanorfe.com/index.html

> On 14 Oct 2020, at 21:26, David Bradley via groups.io <bozzbradley=gmail.com@groups.io> wrote:
>
> Leif try these links https://drive.google.com/drive/folders/1-JViWLBOIzaHTdwdONX2RP8S4EgWxoND You’ll have to find out which is your VNA model then follow links ,Dave 73
>
>
>>> On 14 Oct 2020, at 21:19, David Bradley via groups.io <bozzbradley=gmail.com@groups.io> wrote:
>>>
>> Hi looking at your screen shot you have 20200501 version firmware which is May of this year 20200926 is latest firmware I know of for your V2.2 ,find latest FWare releases on github download you find all instructions too install on VNA on github ,hope this helps ,Dave 73
>>
>>
>>>> On 14 Oct 2020, at 21:04, ok1vaw <ok1vaw@volny.cz> wrote:
>>>>
>>> If you do not show the bad results and measurement method, hard to say. Sometimes a bad cable could be a source of a problem. Add the s11 and s21 measurements from both sides.
>>>
>>> My opinion is that the source of a problem is mostly on the operator side.
>

While I am calibrating again, one question. I can get reasonable result with V1 without calibration. Is V2 different in that.

I do not think so, I have both Nanovna and V2 and they behave similarly. Only a stupid question - even without any calibration when connecting a terminator (load) you have to get close to the middle of the Smith chart. It is easy to switch port 0 and port 1 on V2. I use mostly NanoVNA Saver.
But bad SMA cables were reported, bad SMA terminators too. Focus to eliminate those problems first, it must be easy if you have both.

I recalibrate each time with each different frequency sweep

> On 14 Oct 2020, at 21:42, Leif M <leif.michaelsson@gmail.com> wrote:
>
> While I am calibrating again, one question. I can get reasonable result with V1 without calibration. Is V2 different in that.
>

I took away the Male/female adapter and things got better. I should have tried that earlier.
One thing, there seems to be difference between Vat-10 attenuator and my calibrators. There is a 2dB dip at 2.4GHz. And the Smith chart has a circle.

Now I have one bad adapter, too

Leif think you need update V2.2.2 firmware think I sent you links

> On 14 Oct 2020, at 22:05, Leif M <leif.michaelsson@gmail.com> wrote:
>
> Now I have one bad adapter, too
>

Yes. I got the link and file.
Thanks.

Sound mate ,Leif 73 Dave 👍👍👍

> On 14 Oct 2020, at 22:37, Leif M <leif.michaelsson@gmail.com> wrote:
>
> Yes. I got the link and file.
> Thanks.
>

I found the adapters I used. They were somekind of reverse polarity female/female adapter type. Two such together make a very bad contact.
I hate those RP connectors.

On 10/14/20 3:11 PM, Leif M wrote:
> I found the adapters I used. They were somekind of reverse polarity
> female/female adapter type. Two such together make a very bad contact.
> I hate those RP connectors.

They were a quick, expedient response to FCC Part 15 requirements for
removable antennas to use a connector that is not readily available. One
might ask whether that is true any more - I don't know that RP and
regular SMAs aren't equally available.

But Back In The Day before all these pesky kids were on my lawn, RP SMAs
were really hard to get. You'd have to special order them, the local
distributors didn't stock them. And the mfrs of equipment that used
them were paranoid about the FCC shutting them down. I remember buying
eval boards for FCC legal modules and they'd come with ONE adapter, and
you couldn't order more unless you begged and pleaded and had a pitiful
story about how you couldn't bear to have the vet cut your dog open to
retrieve it.

use the memory slots ... those are made to store calibtations

dg9bfc sigi

Am 14.10.2020 um 20:55 schrieb David Bradley:

> I recalibrate each time with each different frequency sweep
>
>
>> On 14 Oct 2020, at 21:42, Leif M <leif.michaelsson@gmail.com> wrote:
>>
>> While I am calibrating again, one question. I can get reasonable
>> result with V1 without calibration. Is V2 different in that.
>

When I received my VNA V2 I almost returned it because the patch cable that came with it mis-aligned with the female SMA (regular) connector and wouldn't "mate" but instead went sideways to it and collapsed the 'female' opening <face slap> I needed to use my smallest jeweler's screwdriver to pry apart the female 'opening' again (she was pleased). Then, of course, I had a bunch of antennas that we RP-SMA that I wanted to test. Back to Ebay for the adapters. Now am a proud owner of the world's greatest set of SMA-to-RP-SMA adaptors, as well as SMA-to-U.FL, and SMA-to-BNC.

For my Wi-SUN business I have quite a lot of 900MHz (nominal) dipoles with those pesky U.FL female connectors (those pesky females...), with the males sitting nicely on the RF modules, waiting to 'mate'.

But if you want to test the antenna you need the male U.FL on the SMA adaptors. So, back to Ebay ...

Great word of thumb is that for SMA, "male" means it has "nuts". Get it?

So, if it has a nut it is a male. Now, if it has a "pin" it's regular SMA. If it has a female insert (opposite of a "pin"), then it's NOT A FEMALE, but rather an "RP-Male" (as long as it has that nut). For Female SMAs it's the reverse logic. I'm sure most know this, but I didn't and so this tutorial for those.

Hi, You could well show us a picture of your "adapter park" Hi Hi Hi Hi ...
________________________________
De: NanoVNAV2@groups.io <NanoVNAV2@groups.io> em nome de Peter KA6Z via groups.io <p.knazko=yahoo.com@groups.io>
Enviado: quinta-feira, 15 de outubro de 2020 06:16
Para: NanoVNAV2@groups.io <NanoVNAV2@groups.io>
Assunto: Re: [nanovnav2] NanoVNA 2.2 gives wrong results, what to do?

When I received my VNA V2 I almost returned it because the patch cable that came with it mis-aligned with the female SMA (regular) connector and wouldn't "mate" but instead went sideways to it and collapsed the 'female' opening <face slap> I needed to use my smallest jeweler's screwdriver to pry apart the female 'opening' again (she was pleased). Then, of course, I had a bunch of antennas that we RP-SMA that I wanted to test. Back to Ebay for the adapters. Now am a proud owner of the world's greatest set of SMA-to-RP-SMA adaptors, as well as SMA-to-U.FL, and SMA-to-BNC.

For my Wi-SUN business I have quite a lot of 900MHz (nominal) dipoles with those pesky U.FL female connectors (those pesky females...), with the males sitting nicely on the RF modules, waiting to 'mate'.

But if you want to test the antenna you need the male U.FL on the SMA adaptors. So, back to Ebay ...

Great word of thumb is that for SMA, "male" means it has "nuts". Get it?

So, if it has a nut it is a male. Now, if it has a "pin" it's regular SMA. If it has a female insert (opposite of a "pin"), then it's NOT A FEMALE, but rather an "RP-Male" (as long as it has that nut). For Female SMAs it's the reverse logic. I'm sure most know this, but I didn't and so this tutorial for those.

Hello José --
Here are some pics :)  I hope they come through:
1) Here is the effect of the mis-aligned SMA connection on my VNA V2, before fixing it with a jeweler's screw driver to open the hole again.
2) My 3D printed parts cases with various SMA/U.FL/BNC adaptors/pigtails, etc:
3) A close-up of the U.FL male to SMA Male and SMA Female adaptor, for testing those tiny U.FL female monopole antennas:Here is a link to where I got these: https://www.ebay.com/itm/IPX-IPEX-UFL-U-FL-male-pin-to-SMA-female-Bulkhead-RG178-Cable-for-Wifi-antanna/174068380070?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

4) And the "piece-de-resistance" -- very compact U.FL Male to SMA Male. Great to attach right to the VNA with minimal loss:

Link to seller of these: https://www.ebay.com/itm/10Pcs-SMA-Male-to-IPX-U-fl-Male-Plug-Straight-RF-Adapter-Connector/333654102602?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

I can provide links to the other Ebay vendors. All are US-based except the pigtail U.FL Males I could only find from Asian sellers.
Hope this has been useful.
Peter


On Thursday, October 15, 2020, 07:35:58 AM PDT, José Fernando Santos Lourenço <pu2ybt@hotmail.com> wrote:


Hi, You could well show us a picture of your "adapter park" Hi Hi Hi Hi ...
De: NanoVNAV2@groups.io <NanoVNAV2@groups.io> em nome de Peter KA6Z via groups.io <p.knazko=yahoo.com@groups.io>
Enviado: quinta-feira, 15 de outubro de 2020 06:16
Para: NanoVNAV2@groups.io <NanoVNAV2@groups.io>
Assunto: Re: [nanovnav2] NanoVNA 2.2 gives wrong results, what to do? When I received my VNA V2 I almost returned it because the patch cable that came with it mis-aligned with the female SMA (regular) connector and wouldn't "mate" but instead went sideways to it and collapsed the 'female' opening <face slap> I needed to use my smallest jeweler's screwdriver to pry apart the female 'opening' again (she was pleased). Then, of course, I had a bunch of antennas that we RP-SMA that I wanted to test. Back to Ebay for the adapters. Now am a proud owner of the world's greatest set of SMA-to-RP-SMA adaptors, as well as SMA-to-U.FL, and SMA-to-BNC.

For my Wi-SUN business I have quite a lot of 900MHz (nominal) monopoles with those pesky U.FL female connectors (those pesky females...), with the males sitting nicely on the RF modules, waiting to 'mate'.

But if you want to test the antenna you need the male U.FL on the SMA adaptors. So, back to Ebay ... 

Great word of thumb is that for SMA, "male" means it has "nuts". Get it?

So, if it has a nut it is a male. Now, if it has a "pin" it's regular SMA. If it has a female insert (opposite of a "pin"), then it's NOT A FEMALE, but rather an "RP-Male" (as long as it has that nut). For Female SMAs it's the reverse logic. I'm sure most know this, but I didn't and so this tutorial for those.

Hi again José:
I am adding also my crib sheet for RP vs Standard SMA, since it's easy to mix this up in one's head when trying to remember which is which:

Peter 


On Thursday, October 15, 2020, 01:50:55 PM PDT, Peter KA6Z via groups.io <p.knazko=yahoo.com@groups.io> wrote:

Hello José --
Here are some pics :)  I hope they come through:
1) Here is the effect of the mis-aligned SMA connection on my VNA V2, before fixing it with a jeweler's screw driver to open the hole again.
2) My 3D printed parts cases with various SMA/U.FL/BNC adaptors/pigtails, etc:
3) A close-up of the U.FL male to SMA Male and SMA Female adaptor, for testing those tiny U.FL female monopole antennas:Here is a link to where I got these: https://www.ebay.com/itm/IPX-IPEX-UFL-U-FL-male-pin-to-SMA-female-Bulkhead-RG178-Cable-for-Wifi-antanna/174068380070?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

4) And the "piece-de-resistance" -- very compact U.FL Male to SMA Male. Great to attach right to the VNA with minimal loss:

Link to seller of these: https://www.ebay.com/itm/10Pcs-SMA-Male-to-IPX-U-fl-Male-Plug-Straight-RF-Adapter-Connector/333654102602?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

I can provide links to the other Ebay vendors. All are US-based except the pigtail U.FL Males I could only find from Asian sellers.
Hope this has been useful.
Peter


On Thursday, October 15, 2020, 07:35:58 AM PDT, José Fernando Santos Lourenço <pu2ybt@hotmail.com> wrote:


Hi, You could well show us a picture of your "adapter park" Hi Hi Hi Hi ...
De: NanoVNAV2@groups.io <NanoVNAV2@groups.io> em nome de Peter KA6Z via groups.io <p.knazko=yahoo.com@groups.io>
Enviado: quinta-feira, 15 de outubro de 2020 06:16
Para: NanoVNAV2@groups.io <NanoVNAV2@groups.io>
Assunto: Re: [nanovnav2] NanoVNA 2.2 gives wrong results, what to do? When I received my VNA V2 I almost returned it because the patch cable that came with it mis-aligned with the female SMA (regular) connector and wouldn't "mate" but instead went sideways to it and collapsed the 'female' opening <face slap> I needed to use my smallest jeweler's screwdriver to pry apart the female 'opening' again (she was pleased). Then, of course, I had a bunch of antennas that we RP-SMA that I wanted to test. Back to Ebay for the adapters. Now am a proud owner of the world's greatest set of SMA-to-RP-SMA adaptors, as well as SMA-to-U.FL, and SMA-to-BNC.

For my Wi-SUN business I have quite a lot of 900MHz (nominal) monopoles with those pesky U.FL female connectors (those pesky females...), with the males sitting nicely on the RF modules, waiting to 'mate'.

But if you want to test the antenna you need the male U.FL on the SMA adaptors. So, back to Ebay ... 

Great word of thumb is that for SMA, "male" means it has "nuts". Get it?

So, if it has a nut it is a male. Now, if it has a "pin" it's regular SMA. If it has a female insert (opposite of a "pin"), then it's NOT A FEMALE, but rather an "RP-Male" (as long as it has that nut). For Female SMAs it's the reverse logic. I'm sure most know this, but I didn't and so this tutorial for those.

Very grateful for your disposition. Congratulations on your beautiful collection. Here in Brazil it is complicated to get quality materials but we are settling
________________________________
De: NanoVNAV2@groups.io <NanoVNAV2@groups.io> em nome de Peter KA6Z via groups.io <p.knazko=yahoo.com@groups.io>
Enviado: quinta-feira, 15 de outubro de 2020 20:49
Para: NanoVNAV2@groups.io <nanovnav2@groups.io>; NanoVNAV2@groups.io <nanovnav2@groups.io>
Assunto: Re: [nanovnav2] NanoVNA 2.2 gives wrong results, what to do?

Hello José --

Here are some pics :) I hope they come through:

1) Here is the effect of the mis-aligned SMA connection on my VNA V2, before fixing it with a jeweler's screw driver to open the hole again.
[Inline image]

2) My 3D printed parts cases with various SMA/U.FL/BNC adaptors/pigtails, etc:
[Inline image]

3) A close-up of the U.FL male to SMA Male and SMA Female adaptor, for testing those tiny U.FL female monopole antennas:
[Inline image]
Here is a link to where I got these: https://www.ebay.com/itm/IPX-IPEX-UFL-U-FL-male-pin-to-SMA-female-Bulkhead-RG178-Cable-for-Wifi-antanna/174068380070?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649<https://nam05.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ebay.com%2Fitm%2FIPX-IPEX-UFL-U-FL-male-pin-to-SMA-female-Bulkhead-RG178-Cable-for-Wifi-antanna%2F174068380070%3FssPageName%3DSTRK%253AMEBIDX%253AIT%26_trksid%3Dp2057872.m2749.l2649&data=04%7C01%7C%7Cde18b753a8024ce87ba108d8714bfb3c%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637383918571548472%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=GgCwiApjiL5PSdu%2BEgGtekdphuIz8z%2F0OMFKeEoxAP0%3D&reserved=0>

4) And the "piece-de-resistance" -- very compact U.FL Male to SMA Male. Great to attach right to the VNA with minimal loss:

[Inline image]
Link to seller of these: https://www.ebay.com/itm/10Pcs-SMA-Male-to-IPX-U-fl-Male-Plug-Straight-RF-Adapter-Connector/333654102602?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649<https://nam05.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ebay.com%2Fitm%2F10Pcs-SMA-Male-to-IPX-U-fl-Male-Plug-Straight-RF-Adapter-Connector%2F333654102602%3FssPageName%3DSTRK%253AMEBIDX%253AIT%26_trksid%3Dp2057872.m2749.l2649&data=04%7C01%7C%7Cde18b753a8024ce87ba108d8714bfb3c%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637383918571558454%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=mT4v48vT2PLMiLvlGosumIuZCACygC0Jv%2F08VN9tnLM%3D&reserved=0>

I can provide links to the other Ebay vendors. All are US-based except the pigtail U.FL Males I could only find from Asian sellers.

Hope this has been useful.

Peter



On Thursday, October 15, 2020, 07:35:58 AM PDT, José Fernando Santos Lourenço <pu2ybt@hotmail.com> wrote:



Hi, You could well show us a picture of your "adapter park" Hi Hi Hi Hi ...
________________________________
De: NanoVNAV2@groups.io <NanoVNAV2@groups.io> em nome de Peter KA6Z via groups.io <p.knazko=yahoo.com@groups.io>
Enviado: quinta-feira, 15 de outubro de 2020 06:16
Para: NanoVNAV2@groups.io <NanoVNAV2@groups.io>
Assunto: Re: [nanovnav2] NanoVNA 2.2 gives wrong results, what to do?

When I received my VNA V2 I almost returned it because the patch cable that came with it mis-aligned with the female SMA (regular) connector and wouldn't "mate" but instead went sideways to it and collapsed the 'female' opening <face slap> I needed to use my smallest jeweler's screwdriver to pry apart the female 'opening' again (she was pleased). Then, of course, I had a bunch of antennas that we RP-SMA that I wanted to test. Back to Ebay for the adapters. Now am a proud owner of the world's greatest set of SMA-to-RP-SMA adaptors, as well as SMA-to-U.FL, and SMA-to-BNC.

For my Wi-SUN business I have quite a lot of 900MHz (nominal) monopoles with those pesky U.FL female connectors (those pesky females...), with the males sitting nicely on the RF modules, waiting to 'mate'.

But if you want to test the antenna you need the male U.FL on the SMA adaptors. So, back to Ebay ...

Great word of thumb is that for SMA, "male" means it has "nuts". Get it?

So, if it has a nut it is a male. Now, if it has a "pin" it's regular SMA. If it has a female insert (opposite of a "pin"), then it's NOT A FEMALE, but rather an "RP-Male" (as long as it has that nut). For Female SMAs it's the reverse logic. I'm sure most know this, but I didn't and so this tutorial for those.

I had a problem with a sma female on one of my early nanovnas. One leaf was pushed over, virtually occluding the pin recepticle. I posted about it a few months ago with a few pics.

I repaired it with the aid of a Chinese “ microscope” to help the eyes, but for a tool I used the eye end of a sewing needle, as it is rounded and smooth, so as not to scratch the surface of the recepticle. I chose a fairly large needle whose eye end would easily drop into a good recepticle, but without much wobble. By doing this, there was less uncertainty as to how much to bend out. I think I started it with the sharp end and then turned it round to theveye end. Doing it in stages and gently testing with a male connector produced a satisfactory result. That needle is now in with my connector collection.

This would not pass off as acceptable in a professional environment. The upmarket sma connectors usually have six leaves instead of the cheapo two.

Steve L. G7. PSZ

Hi Steve, missed your earlier info about straightening the leaves of the female SMA receptacle on your nanoVNA, but it sounds like a more elegant way than I used, especially if you used that Chinese microscope -- they look like cool things. I was worried that the original damage to the SMA connector was sort of irreparable even though I was able to restore a path for the male connector pin. Once the brass(?) gets deformed it's never going to be perfect. 
The other point is that these are Chinese connectors on our Chinese-made VNAs, and even the connectors purchased from "USA Sellers" here (or "UK Sellers", too), are ultimately from China. For HF work I've splurged on US-made "UHF" SO239/PL259 plugs/jacks. They are utterly gorgeous, beautifully milled to tight tolerances and exquisitely plated in silver. The difference is visually obvious, and so one assumes they'll perform more reliably too...
Peter KA6Z
On Friday, October 16, 2020, 03:39:44 AM PDT, Stephen Laurence <gaslaurence@gmail.com> wrote:

I had a problem with a sma female on one of my early nanovnas. One leaf was pushed over, virtually occluding the pin recepticle. I posted about it a few months ago with a few pics.

I repaired it with the aid of a Chinese “ microscope” to help the eyes, but for a tool I used the eye end of a sewing needle, as it is rounded and smooth, so as not to scratch the surface of the recepticle. I chose a fairly large needle whose eye end would easily drop into a good recepticle, but without much wobble. By doing this, there was less uncertainty as to how much to bend out. I think I started it with the sharp end and then turned it round to theveye end. Doing it in stages and gently testing with a male connector produced a satisfactory result. That needle is now in with my connector collection.

This would not pass off as acceptable in a professional environment. The upmarket sma connectors usually have six leaves instead of the cheapo two.

Steve L. G7. PSZ