Date   

Re: SNA Latest version Info

Roland Rutsaert
 

Hi Jason,

Take a look at the nano VNA H4. For about 60$ you get a very decent VNA with TFT screen and nice PC software.

You can never make ik yourself for that price.

Be aware of the new European taks law when you buy from China !

73 de ON7UF Roland

-----Oorspronkelijk bericht-----
Van: PHSNA@groups.io [mailto:PHSNA@groups.io] Namens 9H5BM
Verzonden: maandag 19 juli 2021 18:25
Aan: PHSNA@groups.io
Onderwerp: [PHSNA] SNA Latest version Info

Hi,

I am looking to build an Arduino-style SNA to test some bandpass and low pass filters I am building for a project. I seem to understand that they all lie around the ad8307, or op-amp detector together with the AD DDS MODULE.

Can anyone point me to a stand-alone SNA with a TFT display - where I can find the info such as the gerbers and Firmware? hex files?

73's
Jason


Re: SNA Latest version Info

9H5BM
 

Hi Rudi,

Thanks for the pointers, is there a kit for the nano va ?

i was opting to build yana-bt -

73's
Jason

On Mon, Jul 19, 2021 at 11:54 PM Rudi <reuterr@web.de> wrote:

On Mon, Jul 19, 2021 at 07:31 PM, 9H5BM wrote:


Can anyone point me to a stand-alone SNA with a TFT display
Hello Jason,
How about the nanoVNA?
https://groups.io/g/nanovna-users
and
https://www.rudiswiki.de/wiki9/nanoVNA

73, Rudi DL5FA







Re: SNA Latest version Info

wb6ogd
 

Yes, even though I love my modified PHSNA,
I wouldn’t bother to build one today when
you can get a VNA for $50!!
73,
Gary
WB6OGD

On Jul 19, 2021, at 2:54 PM, Rudi <reuterr@web.de> wrote:

On Mon, Jul 19, 2021 at 07:31 PM, 9H5BM wrote:


Can anyone point me to a stand-alone SNA with a TFT display
Hello Jason,
How about the nanoVNA?
https://groups.io/g/nanovna-users
and
https://www.rudiswiki.de/wiki9/nanoVNA

73, Rudi DL5FA






Re: SNA Latest version Info

Rudi
 

On Mon, Jul 19, 2021 at 07:31 PM, 9H5BM wrote:


Can anyone point me to a stand-alone SNA with a TFT display
Hello Jason,
How about the nanoVNA?
https://groups.io/g/nanovna-users
and
https://www.rudiswiki.de/wiki9/nanoVNA

73, Rudi DL5FA


Re: SNA Latest version Info

9H5BM
 

Hi Nick,

Thanks for your input, I have found that group and browsed the files
already. looks like I end up building my own -- and code it with the
available sources !!

I might do a PCB for it too! so I keep looking!

73's
Jason

On Mon, Jul 19, 2021 at 7:44 PM Nick Kennedy <kennnick@gmail.com> wrote:

Well, when the PHSNA project was going strong I know that there were at
least a couple of folks working on stand-alone versions. You might look at
this group’s ‘files’ and ‘photos’ sections to see what they were doing and
who you might contact.

One of those projects evolved into a commercial project. It may no longer
be in production but you might get ideas from here:

https://midnightdesignsolutions.com/sna/

73

Nick, WA5BDU


On Mon, Jul 19, 2021 at 12:31 PM 9H5BM <jmcservv@gmail.com> wrote:

Hi,

I am looking to build an Arduino-style SNA to test some bandpass and low
pass filters I am building for a project. I seem to understand that they
all lie around the ad8307, or op-amp detector together with the AD DDS
MODULE.

Can anyone point me to a stand-alone SNA with a TFT display - where I
can
find the info such as the gerbers and Firmware? hex files?

73's
Jason










Re: SNA Latest version Info

Nick Kennedy
 

Well, when the PHSNA project was going strong I know that there were at
least a couple of folks working on stand-alone versions. You might look at
this group’s ‘files’ and ‘photos’ sections to see what they were doing and
who you might contact.

One of those projects evolved into a commercial project. It may no longer
be in production but you might get ideas from here:

https://midnightdesignsolutions.com/sna/

73

Nick, WA5BDU

On Mon, Jul 19, 2021 at 12:31 PM 9H5BM <jmcservv@gmail.com> wrote:

Hi,

I am looking to build an Arduino-style SNA to test some bandpass and low
pass filters I am building for a project. I seem to understand that they
all lie around the ad8307, or op-amp detector together with the AD DDS
MODULE.

Can anyone point me to a stand-alone SNA with a TFT display - where I can
find the info such as the gerbers and Firmware? hex files?

73's
Jason






SNA Latest version Info

9H5BM
 

Hi,

I am looking to build an Arduino-style SNA to test some bandpass and low pass filters I am building for a project. I seem to understand that they all lie around the ad8307, or op-amp detector together with the AD DDS MODULE.

Can anyone point me to a stand-alone SNA with a TFT display - where I can find the info such as the gerbers and Firmware? hex files?

73's
Jason


Re: Looking for info to build a VNA

Dave VE3LHO
 

Leandro,

If you scroll to the bottom of the site Steve pointed to (https://nanorfe.com/nanovna-v2.html) you'll find the schmatics and board details for the nanoVNA V2. A fairly advnced project but probably the most capable "open" design out ther right now.

The block diagram and basic details for the "original" nanoVNA were made public and I think perhaps the schematic too. I don't see the schematic around now and the orginator's site is also gone, I think.The block diagram does give basic info.

Daniel KW4TI has a design based on the EU1KY antenna analyzer (which is all but a VNA) and the details are on github at https://github.com/profdc9/VNA This VNA is similar to the nano but uses a different bridge design.

Erik Kaashoek (designer of the tinySA) has some info including schematic and code for a VNA that uses a PC and its audio inputs at https://github.com/erikkaashoek/Tapr-VNA The PC app is also there. And look the nanoVNA schematic as well :-) This VNA is based (I think) on one version of the TAPR VNA and is essentially the same basic design as the nano, RF wise.

If you look at other repos of Erik's you will also find a fork of a F4GOH's VNArduino but since it uses an AD9851 it may be a harder build.

Hope that gives you something to consider.

73s Dave
VE3LHO


Re: Looking for info to build a VNA

Leandro Sorkin
 

Hello Ignacio EB4APL, Steve K1RF and Steve KM5HT and thanks for your replies.
Sorry for my mistake in calling VNA an SNA device. I know the difference between them.
Before getting into this group been exploring my options and found that the nanoVNA is unavailable from all vendors.
Even found a fellow from the UK that sells an N2PK VNA, with many bells and whistles, but for a completely out of reasonable price (600+ euros).
Being used to build my own equipment and due to the reasons above, I started to look for building information like PCB diagrams, software, etc.
Most likely will use some diagrams I've found and do my own development.
Anyway, thank you all for the information.

73 Leandro VE3WT/LW5DM


Re: Looking for info to build a VNA

Steve Arntz
 

Here is everything you wanted to know about the NanoVNA. https://nanorfe.com/nanovna-v2.html
I do still love my PHSNA.

73 Steve, KM5HT


Re: Looking for info to build a VNA

Steven Dick
 

Hi Leandro. . I had built a PHSNA and it was a fun project and I still
use it, primarily for adjusting filters. In addition to Ignacio's
comments, the DDS devices used in the PHSNA are becomming scarce on
EBAY. You are MUCH better off purchasing a nano VNA. Yes you will miss
all the fun building your own, but at the present time, you would run
into a lot of difficulties and IMO it's just not worth the effort and
you would spend more money for much less capability compared to the
nanoVNA. SDR Kits also sold a high performane VNA called the DG8SAQ
VNWA3. About $354 including VAT + shipping.

-Steve K1RF

------ Original Message ------
From: "EB4APL" <eb4apl@gmail.com>
To: PHSNA@groups.io
Sent: 5/28/2021 12:27:16 PM
Subject: Re: [PHSNA] Looking for info to build a VNA

Hi,

First of all, the PHSNA is a Scalar Network Analyzer, not a VNA. For a VNA google for nanoVNA, it is portable and already built, but for around $50 I think that it is impossible to build one yourself.

Second: The PHSNA group has all the info, schematics, theory, PCB layouts, software, everything that you would would need to build one. Unfortunately there are not PCBs for sale, they had been available several years ago, but now I think that all remaining ones were depleted.

Regards,

Ignacio EB4APL


El 28/05/2021 a las 0:44, Leandro Sorkin escribió:
Hello everyone.
It seems this forum has been around for quite some time. I am a newcomer
that wants to build his own VNA and been looking for information.
Unfortunately, all the info seems to be "top secret" or just a few pieces
released (mostly useless pictures of someone else's project) but nothing
that I could use to build mine).
Can someone point me into the right place for technical info, like
schematic, pcb, software, etc. ?
Even YL3AKB info seems to be "confidential"
Thanks in advance for all help I can get.
73 de VE3MIZ, Simon

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Re: Looking for info to build a VNA

EB4APL
 

Hi,

First of all, the PHSNA is a Scalar Network Analyzer, not a VNA. For a VNA google for nanoVNA, it is portable and already built, but for around $50 I think that it is impossible to build one yourself.

Second: The PHSNA group has all the info, schematics, theory, PCB layouts, software, everything that you would would need to build one. Unfortunately there are not PCBs for sale, they had been available several years ago, but now I think that all remaining ones were depleted.

Regards,

Ignacio EB4APL

El 28/05/2021 a las 0:44, Leandro Sorkin escribió:
Hello everyone.
It seems this forum has been around for quite some time. I am a newcomer
that wants to build his own VNA and been looking for information.
Unfortunately, all the info seems to be "top secret" or just a few pieces
released (mostly useless pictures of someone else's project) but nothing
that I could use to build mine).
Can someone point me into the right place for technical info, like
schematic, pcb, software, etc. ?
Even YL3AKB info seems to be "confidential"
Thanks in advance for all help I can get.
73 de VE3MIZ, Simon

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https://www.avast.com/antivirus


Looking for info to build a VNA

Leandro Sorkin
 

Hello everyone.
It seems this forum has been around for quite some time. I am a newcomer
that wants to build his own VNA and been looking for information.
Unfortunately, all the info seems to be "top secret" or just a few pieces
released (mostly useless pictures of someone else's project) but nothing
that I could use to build mine).
Can someone point me into the right place for technical info, like
schematic, pcb, software, etc. ?
Even YL3AKB info seems to be "confidential"
Thanks in advance for all help I can get.
73 de VE3MIZ, Simon


Re: Ver. 1.42 and crystal measurement

Nick Kennedy
 

I don't know if interest in the measurement receiver ever "took off" so
there may not have been many boards. All the boards for the project were
produced by N5IB, except for cases where folks decided to "roll their own".

There has been renewed interest in the group as seen in more people joining
the list, as well as a few dropping out in response to the increased
traffic. ;^) However, I think most of them may just want to get access to
some of the files and info residing in the files section of the groups.io
site. Which is a good reason to sign up.

The nanoVNA is an amazing device for sure and I'm still learning mine. I do
find myself firing up the PHSNA occasionally, usually for crystal
measurements.

73

Nick, WA5BDU

On Tue, Jun 30, 2020 at 4:19 PM goldeaglemex strathman <
goldeaglemex@gmail.com> wrote:

Nick
Re: Board availability. I think I have the sweep generator and power meter
covered. I could use the boards for the measurement Rx though. Noticed
today that I had ordered a bag of 3.2768 crystals some time ago. Probably
to avoid calculating filters and the diplexer. So, I can use those for the
Rx board. Also will have to make sure I can mesh my hardware with the
existing software. Great learning experience so far. How was the response
to your offer to re-visit the PHSNA? With such easy access to nanoVNA's,
etc. doubt that you are deluged with interest. Shame. Great learning
experience all around.
73's
Ron K6DNV




Re: Ver. 1.42 and crystal measurement

goldeaglemex strathman
 

Nick
Re: Board availability. I think I have the sweep generator and power meter covered. I could use the boards for the measurement Rx though. Noticed today that I had ordered a bag of 3.2768 crystals some time ago. Probably to avoid calculating filters and the diplexer. So, I can use those for the Rx board. Also will have to make sure I can mesh my hardware with the existing software. Great learning experience so far. How was the response to your offer to re-visit the PHSNA? With such easy access to nanoVNA's, etc. doubt that you are deluged with interest. Shame. Great learning experience all around.
73's
Ron K6DNV


Re: Testing the Measurement Rcvr

Nigel Maund
 

Tony,
Can you send me an email, off this list

maund.n@gmail.com

I'd like to exchange ideas, on the Ashar Farhan specan. I am about 30% progressed.

Rgds,
Nigel
Va2nm


Re: PHSNA & Measurement Receiver

EB4APL
 

Another good option for a Poor Ham Spectrum Analyzer is using a SDR receiver. You have many choices, for example if you want V-UHF, there is the RTL Digital TV dongle that is being sold for $10 and it is supported by the most popular free software. The spectrum display con resolve 1 Hz so you can see the modulation sidebands fairly well; the amplitude absolute calibration is not easy to do, but the relative is good so you can measure sideband to carrier ratios, sideband asymmetry and suppression and splatter. Using the waterfall display you see off the air how bad some "linear amplifiers" are. Even I have seen a professional CW station whose key clicks invaded an aeronautical station.

If you want HF coverage the hardware is more expensive, but not too much. I successfully installed one of these TV dongles as a panadapter in a HF transceiver. This doubles as an HF spectrum analyzer with its limitations, but is adequate to check modulations, carrier hum and so.

I even sent several receiving reports to a big HF station, informing them of power supply hum without obtaining an acknowledge. Later I realized that it was not just hum, they were sending 100 Hz encrypted data on their carrier.

73 de Ignacio EB4APL

El 27/05/2020 a las 4:20, wb6ogd escribió:
Hi Nick,
They might be the ones working on the tinySA, they have a prototype tinySA that looks
just like a nanoVNA, screen included.  I stopped working on my PCB version since I can wait
to just buy theirs  ;-)
I don't think the tinySA has enough RBW to look at the sidebands but don't know for sure.
I have used it to look at harmonics and search for spurs.  It displays in real time on the PC
screen or you can add a small display.
73,
Gary
WB6GOD


On 5/26/2020 6:12 PM, Nick Kennedy wrote:
That’s very interesting, Gary.  I’ll check it out.

Some of the brains behind nanoVNA are supposed to be working on an
inexpensive SA. That sounds interesting. And then there are people using
those DSP wideband dongles to do SA as well. I just wonder how well they
work and if their resolution allows you do look at different side bands and
so on.

Yes, the Measurement Receiver does function as a kind of simple SA. I’d
used it before to look at harmonics coming out of some of my boat anchors
and homebrew QRP transmitters. It did well for that. This application of
comparing the amplitudes of sideband and carrier is nice to have, but
there’s no fast sweep type functionality.

73-

Nick, WA5BDU


On Tue, May 26, 2020 at 6:27 PM wb6ogd <garywinblad@comcast.net> wrote:

If you guys haven't built your receiver yet...
The main purpose of the receiver is just to be a simple spectrum
analyzer, if I am not mistaken.
You may want to join the HBTE HomeBrewTestEquipment group.
Subscribe: HBTE+subscribe@groups.io <mailto:HBTE+subscribe@groups.io>

Erik, PD0EK, has a great simple design for a 0-200MHz spectrum analyzer,
built with ebay modules
for about $35.  Mine is still in the proto stage but works amazingly
well.  Goes right there along
with my PHSNA as most used test equipment.
His project is called tinySA.  It uses an Arduino(or similar) to control
two Si4432 modules.
73,
Gary
WB6OGD

On 5/26/2020 3:10 PM, William R Maxwell wrote:
I agree with ted, please keep working on this. My receiver is still
awaiting assembly but it is on the task list.

Bill, VK7MX

On 27/5/20 6:56 am, Ted KX4OM wrote:
Nick,

Keep it up! I think those of us who have built the measurement
receiver are starved for working ideas to play with. When I built it,
I assumed the initial use would to inject an LO to a mixer such as an
SBL-1 to move an RF signal down to the measurement receiver for
analysis. Sort of like the idea from old QSTs to mix an RF frequency
down to a limited bandwidth scope. I would think that the IF crystal
filtering in the measurement receiver would do a pretty good job for
something like that, and we would be able to see the frequencies like
you have done with your experiment. I need a bit more of the concepts
to work with, but I am interested in what you are doing.

Ted, KX4OM





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Re: PHSNA & Measurement Receiver

wb6ogd
 

Hi Nick,
They might be the ones working on the tinySA, they have a prototype tinySA that looks
just like a nanoVNA, screen included.  I stopped working on my PCB version since I can wait
to just buy theirs  ;-)
I don't think the tinySA has enough RBW to look at the sidebands but don't know for sure.
I have used it to look at harmonics and search for spurs.  It displays in real time on the PC
screen or you can add a small display.
73,
Gary
WB6GOD

On 5/26/2020 6:12 PM, Nick Kennedy wrote:
That’s very interesting, Gary. I’ll check it out.

Some of the brains behind nanoVNA are supposed to be working on an
inexpensive SA. That sounds interesting. And then there are people using
those DSP wideband dongles to do SA as well. I just wonder how well they
work and if their resolution allows you do look at different side bands and
so on.

Yes, the Measurement Receiver does function as a kind of simple SA. I’d
used it before to look at harmonics coming out of some of my boat anchors
and homebrew QRP transmitters. It did well for that. This application of
comparing the amplitudes of sideband and carrier is nice to have, but
there’s no fast sweep type functionality.

73-

Nick, WA5BDU


On Tue, May 26, 2020 at 6:27 PM wb6ogd <garywinblad@comcast.net> wrote:

If you guys haven't built your receiver yet...
The main purpose of the receiver is just to be a simple spectrum
analyzer, if I am not mistaken.
You may want to join the HBTE HomeBrewTestEquipment group.
Subscribe: HBTE+subscribe@groups.io <mailto:HBTE+subscribe@groups.io>

Erik, PD0EK, has a great simple design for a 0-200MHz spectrum analyzer,
built with ebay modules
for about $35. Mine is still in the proto stage but works amazingly
well. Goes right there along
with my PHSNA as most used test equipment.
His project is called tinySA. It uses an Arduino(or similar) to control
two Si4432 modules.
73,
Gary
WB6OGD

On 5/26/2020 3:10 PM, William R Maxwell wrote:
I agree with ted, please keep working on this. My receiver is still
awaiting assembly but it is on the task list.

Bill, VK7MX

On 27/5/20 6:56 am, Ted KX4OM wrote:
Nick,

Keep it up! I think those of us who have built the measurement
receiver are starved for working ideas to play with. When I built it,
I assumed the initial use would to inject an LO to a mixer such as an
SBL-1 to move an RF signal down to the measurement receiver for
analysis. Sort of like the idea from old QSTs to mix an RF frequency
down to a limited bandwidth scope. I would think that the IF crystal
filtering in the measurement receiver would do a pretty good job for
something like that, and we would be able to see the frequencies like
you have done with your experiment. I need a bit more of the concepts
to work with, but I am interested in what you are doing.

Ted, KX4OM





Re: PHSNA & Measurement Receiver

Nick Kennedy
 

That’s very interesting, Gary. I’ll check it out.

Some of the brains behind nanoVNA are supposed to be working on an
inexpensive SA. That sounds interesting. And then there are people using
those DSP wideband dongles to do SA as well. I just wonder how well they
work and if their resolution allows you do look at different side bands and
so on.

Yes, the Measurement Receiver does function as a kind of simple SA. I’d
used it before to look at harmonics coming out of some of my boat anchors
and homebrew QRP transmitters. It did well for that. This application of
comparing the amplitudes of sideband and carrier is nice to have, but
there’s no fast sweep type functionality.

73-

Nick, WA5BDU

On Tue, May 26, 2020 at 6:27 PM wb6ogd <garywinblad@comcast.net> wrote:

If you guys haven't built your receiver yet...
The main purpose of the receiver is just to be a simple spectrum
analyzer, if I am not mistaken.
You may want to join the HBTE HomeBrewTestEquipment group.
Subscribe: HBTE+subscribe@groups.io <mailto:HBTE+subscribe@groups.io>

Erik, PD0EK, has a great simple design for a 0-200MHz spectrum analyzer,
built with ebay modules
for about $35. Mine is still in the proto stage but works amazingly
well. Goes right there along
with my PHSNA as most used test equipment.
His project is called tinySA. It uses an Arduino(or similar) to control
two Si4432 modules.
73,
Gary
WB6OGD

On 5/26/2020 3:10 PM, William R Maxwell wrote:
I agree with ted, please keep working on this. My receiver is still
awaiting assembly but it is on the task list.

Bill, VK7MX

On 27/5/20 6:56 am, Ted KX4OM wrote:
Nick,

Keep it up! I think those of us who have built the measurement
receiver are starved for working ideas to play with. When I built it,
I assumed the initial use would to inject an LO to a mixer such as an
SBL-1 to move an RF signal down to the measurement receiver for
analysis. Sort of like the idea from old QSTs to mix an RF frequency
down to a limited bandwidth scope. I would think that the IF crystal
filtering in the measurement receiver would do a pretty good job for
something like that, and we would be able to see the frequencies like
you have done with your experiment. I need a bit more of the concepts
to work with, but I am interested in what you are doing.

Ted, KX4OM







Re: PHSNA & Measurement Receiver

William R Maxwell
 

Thanks for that suggestion, Gary. I actually joined that group at the weekend but as yet, haven't had the time to read into the tinySA project.

Bill, VK7MX

On 27/5/20 9:27 am, wb6ogd wrote:
If you guys haven't built your receiver yet...
The main purpose of the receiver is just to be a simple spectrum analyzer, if I am not mistaken.
You may want to join the HBTE HomeBrewTestEquipment group.
Subscribe: HBTE+subscribe@groups.io <mailto:HBTE+subscribe@groups.io>

Erik, PD0EK, has a great simple design for a 0-200MHz spectrum analyzer, built with ebay modules
for about $35.  Mine is still in the proto stage but works amazingly well.  Goes right there along
with my PHSNA as most used test equipment.
His project is called tinySA.  It uses an Arduino(or similar) to control two Si4432 modules.
73,
Gary
WB6OGD

On 5/26/2020 3:10 PM, William R Maxwell wrote:
I agree with ted, please keep working on this. My receiver is still awaiting assembly but it is on the task list.

Bill, VK7MX

On 27/5/20 6:56 am, Ted KX4OM wrote:
Nick,

Keep it up! I think those of us who have built the measurement receiver are starved for working ideas to play with. When I built it, I assumed the initial use would to inject an LO to a mixer such as an SBL-1 to move an RF signal down to the measurement receiver for analysis. Sort of like the idea from old QSTs to mix an RF frequency down to a limited bandwidth scope. I would think that the IF crystal filtering in the measurement receiver would do a pretty good job for something like that, and we would be able to see the frequencies like you have done with your experiment. I need a bit more of the concepts to work with, but I am interested in what you are doing.

Ted, KX4OM




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