开云体育

W5SWL. Excellent vendor, I have bought from him several times. He sells
direct or eBay.



73


-Jim
NU0C

On Thu, 1 Sep 2022 20:00:58 -0400
"Gary Lee" <kb9zuv@...> wrote:

looking for some recommendations for good extensions for the sma

connectors on the nano. good build quality is more important than price to
me. its hard to judge online ads as they all claim to be good, and being
totally blind, I cannot see their pics or graphs.

Thank you for your assistance.

The down side is the larger the VNA the less it is portable.
The original was designed so one could slip it in a shirt or pants pocket. Making it usable on a roof or tower. If you are using it in a shop or Shack, you could have one the size of my 82 inch TV. All though I could feed the video out of my laptop to the TV.
I myself, even at 78 and needing reading glasses, wanted one for what it was originally designed for.
That is, conveniently portable.
So each their own.
I wouldn't buy a duce and half for what a light weight pickup could due.
Just my 2 cents.
Clyde KC7BJE

Thank you

Sent from Mail<> for Windows

From: Jim Shorney<mailto:jimNU0C@...>
Sent: Thursday, September 1, 2022 18:30
To: [email protected]<mailto:[email protected]>
Subject: Re: [nanovna-users] cable extensions etc.


W5SWL. Excellent vendor, I have bought from him several times. He sells
direct or eBay.



73


-Jim
NU0C

On Thu, 1 Sep 2022 20:00:58 -0400
"Gary Lee" <kb9zuv@...> wrote:

looking for some recommendations for good extensions for the sma

connectors on the nano. good build quality is more important than price to
me. its hard to judge online ads as they all claim to be good, and being
totally blind, I cannot see their pics or graphs.

Thank you for your assistance.

On Thu, Sep 1, 2022 at 05:01 PM, Gary Lee wrote:

looking for some recommendations for good extensions for the sma connectors on
the nano. good build quality is more important than price to me. its hard to
judge online ads as they all claim to be good, and being totally blind, I
cannot see their pics or graphs.

I use the Asian ones on eBay but if you want a brand name with industrial quality use Amphenol. Not cheap though...


Roger

On 9/1/22 12:35 PM, Siegfried Jackstien wrote:

sonnet works superb and is quite easy to use ;-)

see picture (circular polarized patch ... a square with truncated corners)

dg9bfc sigi

many thanks for making that list of the free eda soft ... maybe i will try one or two of them (BESIDES SONNET)

And I think Sonnet Lite (the student/free) version will do simple patches. The limitation is in how big a model you can build.? If you give them your name, etc., the free version will have increased memory, etc.

Am 01.09.2022 um 16:42 schrieb Jim Lux:

On 9/1/22 6:21 AM, Gary W9TD wrote:

EZNEC is now free.

EZNEC as a Method of Moments code that is derived from NEC is really a "wire" modeling code and doesn't do patches very well.

One can "grid" a patch, and put it over ground with soil properties set to match the substrate, but it doesn't have a way to do the ground plane on the other side of the substrate. (well, in NEC4 you could bury a grid of wires)).

NEC based codes will not do the matching sections or transmission line.


What the OP needs is a low cost tool that is designed for microstrip patches.

Ancient, but maybe PUFF (an early microwave circuit modeling package) would work?

At work we use HFSS, but that's sort of the antithesis of free.

I'd start with the list here:



Sonnet has a student version

looking for some recommendations for good extensions for the sma connectors on the nano. good build quality is more important than price to me. its hard to judge online ads as they all claim to be good, and being totally blind, I cannot see their pics or graphs.

Thank you for your assistance.

i would have used n sockets ;-) ... but i have a v2 that goes way higher in frequency as the older nanovna

but ok ... nice work

do you have a bigger battery also or a second one soldered in parallel?? (wire bridges will do fine)

dg9bfc sigi

Am 01.09.2022 um 22:14 schrieb Michael:

The following is a copy of my post of 30th August 2021 which illustrates my solution to the enclosure/connector issues:

The attached pictures show my solution to the SMA issue.

1) BNCs match all my other test gear removing the need for adapters
when interfacing. Indeed BNCs are the standard connector used for
professional test gear up to a few, GHz. (Perhaps 10GHz - Have to
check that).
2) Any risk of straining the SMA attachment point to the PCB is
eliminated.
3) The additional weight of the enclosure reduces the risk of the
nanoVNA being dragged off the workbench by the attached cables.
4) The aluminium enclosure adds a measure of screening - probably a
marginal. benefit.
5) The number of connection cycles permissible with BNCs while not
infinite, is far, far greater than the the very small number of
connection cycles specified for SMAs (in the hundreds if I remember
correctly).

The enclosure is made from extruded aluminium "U" section, readily available from eBay, with suitable apertures cut. I'm not sure that the reference planes for the BNC calibration pieces are perfect, but empirically, the results are the same as those obtained with the calibration devices supplied with the nanoVNA.

Michael. (GW7BBY/GB2MOP).



On 01/09/2022 20:40, Siegfried Jackstien wrote:

IF YOU REALLY HIT THE USB CABLE THAT TINY 2.8 INCH UNIT WILL FLY ACROSS THE ROOM HI HI

buy a 4 inch screen and print a bigger case maybe??

diSlord is experimenting with even bigger (7 inch) screens on the v2!!!

greetz sigi dg9bfc

Am 01.09.2022 um 16:09 schrieb n1evh via groups.io:

I recently purchased a NanoVNA (with a 2.8 inch screen). I was
wondering if anyone has designed/printed a stand for the
NanoVNA???

I'm looking for something that I can put the end of it into (so that
the SMA jacks are facing up)? so I can attach an SMA antenna
for an HT to it.

With a stand... I won't have to worry about the NanoVNA falling
over if the USB cable between my laptop or tablet gets hit or
moves (more of a problem if holding a tablet) and since it will
keep the NanoVNA from falling over... I won't have worry about
anything touching the antenna to affect the measurements.

Thanks,

Mike - N1EVH

Bigger screen begets a bigger case which begets more weight/stability which
begets a bigger battery which begets longer use time... where is the down
side??

John
VE7KKQ

On Thu, Sep 1, 2022 at 12:51 PM Siegfried Jackstien <
siegfried.jackstien@...> wrote:

IF YOU REALLY HIT THE USB CABLE THAT TINY 2.8 INCH UNIT WILL FLY ACROSS
THE ROOM HI HI

buy a 4 inch screen and print a bigger case maybe??

diSlord is experimenting with even bigger (7 inch) screens on the v2!!!

greetz sigi dg9bfc

Am 01.09.2022 um 16:09 schrieb n1evh via groups.io:

I recently purchased a NanoVNA (with a 2.8 inch screen). I was
wondering if anyone has designed/printed a stand for the
NanoVNA???

I'm looking for something that I can put the end of it into (so that
the SMA jacks are facing up) so I can attach an SMA antenna
for an HT to it.

With a stand... I won't have to worry about the NanoVNA falling
over if the USB cable between my laptop or tablet gets hit or
moves (more of a problem if holding a tablet) and since it will
keep the NanoVNA from falling over... I won't have worry about
anything touching the antenna to affect the measurements.

Thanks,

Mike - N1EVH

The following is a copy of my post of 30th August 2021 which illustrates my solution to the enclosure/connector issues:

The attached pictures show my solution to the SMA issue.

1) BNCs match all my other test gear removing the need for adapters
when interfacing. Indeed BNCs are the standard connector used for
professional test gear up to a few, GHz. (Perhaps 10GHz - Have to
check that).
2) Any risk of straining the SMA attachment point to the PCB is
eliminated.
3) The additional weight of the enclosure reduces the risk of the
nanoVNA being dragged off the workbench by the attached cables.
4) The aluminium enclosure adds a measure of screening - probably a
marginal. benefit.
5) The number of connection cycles permissible with BNCs while not
infinite, is far, far greater than the the very small number of
connection cycles specified for SMAs (in the hundreds if I remember
correctly).

The enclosure is made from extruded aluminium "U" section, readily available from eBay, with suitable apertures cut. I'm not sure that the reference planes for the BNC calibration pieces are perfect, but empirically, the results are the same as those obtained with the calibration devices supplied with the nanoVNA.

Michael. (GW7BBY/GB2MOP).



On 01/09/2022 20:40, Siegfried Jackstien wrote:

IF YOU REALLY HIT THE USB CABLE THAT TINY 2.8 INCH UNIT WILL FLY ACROSS THE ROOM HI HI

buy a 4 inch screen and print a bigger case maybe??

diSlord is experimenting with even bigger (7 inch) screens on the v2!!!

greetz sigi dg9bfc

Am 01.09.2022 um 16:09 schrieb n1evh via groups.io:

I recently purchased a NanoVNA (with a 2.8 inch screen). I was
wondering if anyone has designed/printed a stand for the
NanoVNA???

I'm looking for something that I can put the end of it into (so that
the SMA jacks are facing up)? so I can attach an SMA antenna
for an HT to it.

With a stand... I won't have to worry about the NanoVNA falling
over if the USB cable between my laptop or tablet gets hit or
moves (more of a problem if holding a tablet) and since it will
keep the NanoVNA from falling over... I won't have worry about
anything touching the antenna to affect the measurements.

Thanks,

Mike - N1EVH

Bigger screen begets a bigger case which begets more weight/stability which
begets a bigger battery which begets longer use time... where is the down
side??

John
VE7KKQ

On Thu, Sep 1, 2022 at 12:51 PM Siegfried Jackstien <
siegfried.jackstien@...> wrote:

IF YOU REALLY HIT THE USB CABLE THAT TINY 2.8 INCH UNIT WILL FLY ACROSS
THE ROOM HI HI

buy a 4 inch screen and print a bigger case maybe??

diSlord is experimenting with even bigger (7 inch) screens on the v2!!!

greetz sigi dg9bfc

Am 01.09.2022 um 16:09 schrieb n1evh via groups.io:

I recently purchased a NanoVNA (with a 2.8 inch screen). I was
wondering if anyone has designed/printed a stand for the
NanoVNA???

I'm looking for something that I can put the end of it into (so that
the SMA jacks are facing up) so I can attach an SMA antenna
for an HT to it.

With a stand... I won't have to worry about the NanoVNA falling
over if the USB cable between my laptop or tablet gets hit or
moves (more of a problem if holding a tablet) and since it will
keep the NanoVNA from falling over... I won't have worry about
anything touching the antenna to affect the measurements.

Thanks,

Mike - N1EVH

IF YOU REALLY HIT THE USB CABLE THAT TINY 2.8 INCH UNIT WILL FLY ACROSS THE ROOM HI HI

buy a 4 inch screen and print a bigger case maybe??

diSlord is experimenting with even bigger (7 inch) screens on the v2!!!

greetz sigi dg9bfc

Am 01.09.2022 um 16:09 schrieb n1evh via groups.io:

I recently purchased a NanoVNA (with a 2.8 inch screen). I was
wondering if anyone has designed/printed a stand for the
NanoVNA???

I'm looking for something that I can put the end of it into (so that
the SMA jacks are facing up)? so I can attach an SMA antenna
for an HT to it.

With a stand... I won't have to worry about the NanoVNA falling
over if the USB cable between my laptop or tablet gets hit or
moves (more of a problem if holding a tablet) and since it will
keep the NanoVNA from falling over... I won't have worry about
anything touching the antenna to affect the measurements.

Thanks,

Mike - N1EVH