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Hello
I have a problem with Saver 0.2.1. and also 0.2.2 and latest 0.2.2-1.
It crashes !

The program crashes immidiately after clicking with the mouse onto the
scren to e.g. manually set/shift markers.
It's runnimg on Win10 64 Pro on a DELL Laptop

I tried Saver 1.5 and there everything runs fine, no issue for hours.
Does anybody have the same issue and a solution/idea what's wrong ?

Thanks
Ulrich

Hi Chuck,

For filters, the insertion loss is my first choice. Since insertion loss
and return loss are coupled at the hip so to speak, looking at both at the
same time is useful. For passive devices like filters, the return loss is
defined as a positive number. I don't care if you express it as a negative
number, as long as we both understand that passive devices do not generate
power. If you are into data systems then group delay is key and not yet
provided, differential group delay is a key parameter. Perhaps Rune may add
this parameter at a latter date.

73' Alan

Hello,
I'm using Saver primarily to measure impedances on components.
Quite simple to measure and display Real/Imag, and it's great that
features be added day by day !!
That's the reason I'm writing: It would be ideal to see the /number/ of
the Impedance S11 /Z/ in the markers as well.

In the charts S11 /Z/ can be selected to display graph of S11 /Z/.
It would be great, in addition to the "Impedance", also include S11 /Z/ to
the selectable entries in "Marker Settings" for showing the /value/ as a
Ohm-number for each markers frequency.

Would be of great help and simplifies the math when using just the
Real/Imag numbers.
Thanks !

On Feb 6, 2020, at 11:16, Randall Steffens II via Groups.Io <pomology@...> wrote:

?Exactly my thoughts Bob! A 6GHz capable unit is high on my priority list for the same reasons.

73,
Randy
NC8U

On Feb 6, 2020, at 9:03 AM, Bob KV4PC <robert.ehresman@...> wrote:

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 these for.

I am a ham and an ARES member, and the group that serves my county is interested in setting up a high speed Mesh Radio data network. My perception is this particular desire amounts to a world wide movement.

Within the hobby, the technologies are referred to as High Speed Multimedia (HSMM), Broadband Hamnet (BBHN), Amateur Radio Emergency Data Network (AREDN) and others.
There are also groups, not necessarily hams, setting up networks entirely within the confines of ISM unlicensed operations.

As such, the equipment used are consumer grade hackable WIFI access points, brick amplifiers, filters, commercial antennas, and the like. The bands of operation range from 70cm to 5cm, with the bulk of equipment being used operating at 2.4, 3.4, or 5.8 GHz. This is, in my opinion, is the Amateur market for a lower cost 6 GHz capable VNA, and my own primary interest in owning such as this.

While it may be true that the mesh radio experimentors are largely a plug and play crowd who dont build much from scratch and buy their antennas, sadly there is alot of junk on the market, or antennas being marketed with exuberantly exaggerated specifications, or shipped with manufacturing defects and an instrument to confirm performance would be a game changer. It is my belief that microwave experimentors of this class may be very receptive.

73;
Bob KV4PC

On Feb 6, 2020, at 9:03 AM, Bob KV4PC <robert.ehresman@...> wrote:

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 these for.

I am a ham and an ARES member, and the group that serves my county is interested in setting up a high speed Mesh Radio data network. My perception is this particular desire amounts to a world wide movement.

Within the hobby, the technologies are referred to as High Speed Multimedia (HSMM), Broadband Hamnet (BBHN), Amateur Radio Emergency Data Network (AREDN) and others.
There are also groups, not necessarily hams, setting up networks entirely within the confines of ISM unlicensed operations.

As such, the equipment used are consumer grade hackable WIFI access points, brick amplifiers, filters, commercial antennas, and the like. The bands of operation range from 70cm to 5cm, with the bulk of equipment being used operating at 2.4, 3.4, or 5.8 GHz. This is, in my opinion, is the Amateur market for a lower cost 6 GHz capable VNA, and my own primary interest in owning such as this.

While it may be true that the mesh radio experimentors are largely a plug and play crowd who dont build much from scratch and buy their antennas, sadly there is alot of junk on the market, or antennas being marketed with exuberantly exaggerated specifications, or shipped with manufacturing defects and an instrument to confirm performance would be a game changer. It is my belief that microwave experimentors of this class may be very receptive.

73;
Bob KV4PC

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 range 50 KHz - 60 MHz , I just
connected output and input ports through a 10 MHz crystal to explore its
characteristics, mainly serial R and Quality Factor .

Graphical results seems fair but calculated value in nanoVNA Saver are a
bit odd:

Impedance = 55.32 - j3.7 ohm
Quality factor: 0.067

In additon i tried to run from nanoVNA Saver an analysis handling the
filter as a pass band and got this time a Quality factor: 54924.73 - a
bit higher but anyway very far away from typical quartz Q. The
corresponding bandwidth at -3dB was 1.82 KHz.

Sorry was not able imbedding images in mail body, you can see them in the
attached images.rtf file.

Any hint is appreciated ?

Stefano, I3VBP