Date
1 - 6 of 6
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 |
|
|
|
EB4APL
Hi,
toggle quoted message
Show quoted text
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. --
El software de antivirus Avast ha analizado este correo electrónico en busca de virus. https://www.avast.com/antivirus |
|
|
|
Steven Dick, K1RF
Hi Leandro. . I had built a PHSNA and it was a fun project and I still
toggle quoted message
Show quoted text
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@...> To: PHSNA@groups.io Sent: 5/28/2021 12:27:16 PM Subject: Re: [PHSNA] Looking for info to build a VNA Hi, -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus |
|
|
|
Steve Arntz, KM5HT
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 |
|
|
|
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 |
|
|
|
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 |
|
|