Re: BOM for revision 4.1 board needed
G'day Jim.
My PCB is marked 4.3; I have photos and a B.O.M. if they are any help.
Regards, Kerry VK2TIL.
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Re: BOM for revision 4.1 board needed
Hi Kerry
Someone had the 4.1 stuff. Thanks.
There are a lot of similarities.
Now to dig for the remaining parts....
Jim n2go
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On 2/24/21 3:09 PM, Kerry wrote: G'day Jim.
My PCB is marked 4.3; I have photos and a B.O.M. if they are any help.
Regards, Kerry VK2TIL.
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Re: BOM for revision 4.1 board needed
This thread reminded me that I have a pristine, unpopulated v4.1 board and a pair of bridge boards available for a reasonable offer. I built the original N2PK, upgraded it once with the faster detector and had plans to upgrade again when I bought the board. The death of a spouse and the march of time interfered.
I also have an unused Valpey-Fisher VFAC570BH 148.344 MHz clock oscillator I'd like to get $40 for, which is what I paid for it 20 years ago.
Wes N7WS
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OM3LZ version 3 power supply BOM needed
I need the BOM for the DC-DC? converter for N2PK by OM3LZ. The board has a 2009 date on it. This is his third version according to the website.
Hopefully someone has a copy.
Jim n2go
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Re: OM3LZ version 3 power supply BOM needed
G'day Jim.
I have a BOM; see attached.
The original is in Excel/.csv format; contact me if you want that.
I also have PCB and overlay drawings in .pdf.
Kerry VK2TIL.
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Re: OM3LZ version 3 power supply BOM needed
I looked at his website; the third version is more complex than the one for which I kept data; I built my VNA in, I think, 2007 so the data that I have is for an earlier version.
It must be version two as it's different to version one..
I didn't build it; I just made a simple 5v & 12v linear supply with simple zener-based over-voltage protection.
It has never failed.
Kerry VK2TIL.
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Re: OM3LZ version 3 power supply BOM needed
It looks like v 4? has a schematic with the part numbers. Since it is very similar to v 3. I may be able? to figure out which parts will actually fit on the board.
I try? to source parts for several projects at once to lessen the impact of? postage costs.? The trick is? to order all the parts and not leave any off..
In carpentry there is a caution, measure twice and cut once :) I have to check the parts lists several times to avoid disappointment.
Jim n2go
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On 2/26/21 12:21 AM, Kerry wrote: I looked at his website; the third version is more complex than the one for which I kept data; I built my VNA in, I think, 2007 so the data that I have is for an earlier version.
It must be version two as it's different to version one..
I didn't build it; I just made a simple 5v & 12v linear supply with simple zener-based over-voltage protection.
It has never failed.
Kerry VK2TIL.
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FS original N2PK VNA, parallel port version, with bridge/cables/standards and PSOC board to construct USB interface
It's finally time for me to let this go. I have an original N2PK VNA that I built when I kitted some of these for the Knightlites QRP group. Paul had a picture of it in the gallery on his website. It will come with a half-inch-thick bundle of printed out documentation, the VNA itself in a die-cast aluminum enclosure with fan mounted, several sets of SMA cables, SMA standards, one populated bridge board, two unpopulated bridge PCBs, linear AC adapter, and the PSOC eval board which can be used to make a parallel-to-USB interface (I never got around to that). It will NOT come with a parallel port cable. I did some antenna work with it back in the day. Let's say $50, plus whatever it costs to ship. I can probably get it into a flat rate Priority Mail box, which is $16.25
Picture of everything:
Picture of VNA interior:
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Re: FS original N2PK VNA, parallel port version, with bridge/cables/standards and PSOC board to construct USB interface
Todd,
I am interested, please contact me off list.
thanks,
Dave - wb9own
wb9own @ arrl.net
QRZ is also good.
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On Friday, October 29, 2021, 01:44:29 PM CDT, toddwnichols via groups.io <todd.nichols@...> wrote:
It's finally time for me to let this go.? I have an original N2PK VNA that I built when I kitted some of these for the Knightlites QRP group.? Paul had a picture of it in the gallery on his website.? It will come with a half-inch-thick bundle of printed out documentation, the VNA itself in a die-cast aluminum enclosure with fan mounted, several sets of SMA cables, SMA standards, one populated bridge board, two unpopulated bridge PCBs, linear AC adapter, and the PSOC eval board which can be used to make a parallel-to-USB interface (I never got around to that).? It will NOT come with a parallel port cable.? I did some antenna work with it back in the day.? Let's say $50, plus whatever it costs to ship.? I can probably get it into a flat rate Priority Mail box, which is $16.25
Picture of everything:?
Picture of VNA interior:?
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A Merry Christmas to all; in particular to Paul and Dave and to all others who have supported the N2PK VNA.
Kerry VK2TIL.
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I've written a Windows program that calculates ground permittivity, conductivity, and skin depth using impedance data from a soil probe and vector network analyzer, such as an N2PK. Realistic ground parameters are important when comparing horizontal and vertical antenna models. General terrain descriptions and ground conductivity maps are much too coarse. Ground parameters also vary with frequency. With a soil probe you can determine the parameters of your local ground at the frequency of interest. Skin depth can help you assess the limitation of a surface probe when the ground is inhomogeneous. The program reads Touchstone, VNA4win, and W5BIG VNA files.
See README.TXT for instructions. It includes references on making and using a soil probe.
Download:
Brian
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Hi Kerry, A bit late for Marry Christmas but not for Happy New Year. I remember when we both were both just getting our N2PK VNA¡¯s working. Roderick Wall, vk3yc. Sent from Mail ( ) for Windows *From:* Kerry ( planningpower@... ) *Sent:* Friday, 24 December 2021 8:00 PM *To:* [email protected]*Subject:* [N2PK-VNA] Merry Christmas A Merry Christmas to all; in particular to Paul and Dave and to all others who have supported the N2PK VNA. Kerry VK2TIL.
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G'day Roderick; nice to hear from you.
This Group has been very quiet; I assume that everyone's hardware is working well and that Dave's myVNA is operating flawlessly.
Let's hope that the world returns to some degree of normality in 2022; at least we are ahead of the Poms in Test cricket so that's encouraging. :)
Regards, Kerry VK2TIL.
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Re: Soil Probe Calculator
Hi Brian,Thanks, that is a very interesting use for the N2PK VNA. Have downloaded your files to use if we ever need to.Thanks,Roderick Wall vk3yc.Sent from my Samsung Galaxy smartphone.
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-------- Original message --------From: Brian Beezley <k6sti@...> Date: 28/12/21 4:23 am (GMT+10:00) To: [email protected] Subject: [N2PK-VNA] Soil Probe Calculator I've written a Windows program that calculates ground permittivity, conductivity, and skin depth using impedance data from a soil probe and vector network analyzer, such as an N2PK. Realistic ground parameters are important when comparing horizontal and vertical antenna models. General terrain descriptions and ground conductivity maps are much too coarse. Ground parameters also vary with frequency. With a soil probe you can determine the parameters of your local ground at the frequency of interest. Skin depth can help you assess the limitation of a surface probe when the ground is inhomogeneous. The program reads Touchstone, VNA4win, and W5BIG VNA files.See README.TXT for instructions. It includes references on making and using a soil probe.Download:
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Hello, I have just received an N2PK VNA and I am looking at the myVNA
software. This site appears to be the only contact for the author.
I am in pursuit of the software key and hopefully any advice the group can
give.
Any help in contacting G8KBB would be appreciated.
Regards es 73
Russell VK4ARW
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Hi Russell
When opening the "Help/Product key entry/ product key & registration management" window in the MyVNA software, you can see the email address of the autor. Depending on his workload, he will generaly answer within a week after receiving your registration request.
You also can download DG8SAQ VNWA.exe
which is a free and 100% N2PK compatible software, without needing any registration number
73'
Marc f6itu
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-----Message d'origine----- De?: [email protected] < [email protected]> De la part de Russell Richter via groups.io Envoy¨¦?: dimanche 20 f¨¦vrier 2022 00:58 ??: [email protected]Objet?: [N2PK-VNA] myVNA software Hello, I have just received an N2PK VNA and I am looking at the myVNA software. This site appears to be the only contact for the author. I am in pursuit of the software key and hopefully any advice the group can give. Any help in contacting G8KBB would be appreciated. Regards es 73 Russell VK4ARW
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G'day Russell.
This Group is quiet these days; I check it fairly often and others probably do the same.
Ivan Makarov was and still is a great supporter of the N2PK VNA; there is a lot of information on his website;
Dave G8KBB can be difficult to contact as his "day job" is pretty high-level and keeps him very busy but he's a nice bloke and I'm sure will help you.
Here is his website page on the VNA;
His e-mail is "buried", obviously for privacy reasons, in the second-last paragraph near the bottom of the page.
If you don't already have it, the user manual is also there. The other material may be of use also, although you are not actually building one it's good background.
It's a very good instrument; I'm sure you will like it.
Regards, Kerry VK2TIL.
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I have just loaded 0.95 but I need a software key. The myvna@... doesn't work anymore.
73, Rudy N6LF
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G'day, Rudi.
Warrington Amateur Radio Club might help; perhaps they would forward a message to Dave.
Regards, Kerry VK2TIL.
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thanks Kerry. For some strange reason my ISP will not allow me to receive emails from Dave, very frustrating. But he can receive them from me. I've asked Paul, N2PK, to relay for me. Rudy
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Wes Stewart
f6itu