Hello Roger,
Just an observation, The green App curves have a distinct spike at the 5351 clock gen harmonic change points; ~300MHz, ~600MHz, 900Mhz.
Cheers...Bob VK2ZRE
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On 2/03/2023 5:20 am, Roger Need via groups.io wrote: I did a comparison calibration with the NanoVNA itself and NanoVNA app (DiSlord version) using a cable that was 30 cm (12") long. Results were better than the 3M cable I posted earlier but I think I will stick with NanoVNA calibration and no longer calibrate in NanoVNA app.
Hopefully DiSlord or Owen Duffy will investigate as they seem to be the only ones modifying this program.
Roger
|
Re: check "Dollar Tree" store. Now Dollar and a Quarter!
Dave,
Totally transparent now.
73
John
VE7KKQ
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On Wed, Mar 1, 2023 at 11:24?AM Dave Merrill <r390a.urr@...> wrote: The outlets my SIL replaced came from a reputable source, NOT Dollar Tree.
Sorry if that wasn't clear.
Dave N9ZC
On Wed, Mar 1, 2023, 12:38 PM John <ve3kkqve3kkq@...> wrote:
I would NOT use wall outlets, light switches or anything else that
physically attaches to my home and home electrical system.
Some Chinese manufacturers are well known for placing/marking their goods
with fraudulent symbols from testing organisations such as CE, UL and CSA.
It is your house, if saving two to three dollars over a known
commercially
branded product is worth the risk of your house going up in flames, that is
up to you.
Who are you going to sue when your home insurance company has completed
their investigation and determined that your house turned into smoke
because of a fraudulently certified electrical fitting was the cause,
therefore they won't pay out... Dollar Tree?
I know that in the Province of Ontario, Canada, if you install electrical
circuits in your home and do not get it inspected and certified by a
qualified electrician and you have an electrical fire and your insurance
company finds out the electrical modifications were not inspected/certified
by an electrician, your fire insurance is null and void AND no other
insurance company will insure you.
Your choice, think about it...
John
VE7KKQ
On Wed, Mar 1, 2023 at 9:32?AM Dave Merrill <r390a.urr@...> wrote:
The inventory at Dollar Tree varies considerably from store to store and
visit to visit.
My son-in-law replaced some AC wall outlets with newer types that also
sport two USB charging ports. My daughter and family use Apple devices and
my wife and I use the same model of Android phone with USB-C. I dropped by
our local Dollar Tree and got two cables for us to leave at their place so
we didn't need to bring along chargers.
These cables had well molded strain reliefs at both ends and fabric
braid
over the cable. They have been working great for the past few months
and
my
SIL also uses them on his USB-C gadgets. The only negative is the length
-
just 1 meter.
Impressed by how well they worked, I went to a couple different Dollar Tree
stores by my SIL and near home and could not find them again anywhere.
Dave N9ZC
On Tue, Feb 28, 2023, 1:27 PM Jim Allyn - N7JA < jim@...
wrote:
On Mon, Feb 27, 2023 at 11:19 AM, Clyde Lambert wrote:
I purchased a couple of USB lead wires from Dollar Tree. They
lasted
about
three or four weeks, then the insulation started separateing from
the
back of
the connector housing. I've noticed that with some of the cables I have purchased from
Dollar
Tree also, but mine are two or three years old, maybe more. Some are
plugged into and unplugged from the phone or other devices daily, sometimes
more than once a day. Maybe I'll buy some expensive cables some day, maybe
not. If you can recommend a brand that you think will provide better bang
for the buck, I'd consider buying some.
|
Re: reinforce cables with a bit of glue
On Wednesday 01 March 2023 02:16:03 pm KENT BRITAIN wrote: The only time I have had any issues with a USB cable was with a girlfriend.?? She would jerk the plug out of the phone pulling on the cable rather than grabbing the connector.
I know of one young lady who used to do that with extension cords, until the time she did it and the cord came away, leaving the plug in the socket and enough wire sticking out to generate quite the light show. I don't think she did it again after that.. :-) -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, ?a critter that can be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters" - Information is more dangerous than cannon to a society ruled by lies. --James M Dakin
|
Re: check "Dollar Tree" store. Now Dollar and a Quarter!
The outlets my SIL replaced came from a reputable source, NOT Dollar Tree.
Sorry if that wasn't clear.
Dave N9ZC
toggle quoted message
Show quoted text
On Wed, Mar 1, 2023, 12:38 PM John <ve3kkqve3kkq@...> wrote: I would NOT use wall outlets, light switches or anything else that
physically attaches to my home and home electrical system.
Some Chinese manufacturers are well known for placing/marking their goods
with fraudulent symbols from testing organisations such as CE, UL and CSA.
It is your house, if saving two to three dollars over a known commercially
branded product is worth the risk of your house going up in flames, that is
up to you.
Who are you going to sue when your home insurance company has completed
their investigation and determined that your house turned into smoke
because of a fraudulently certified electrical fitting was the cause,
therefore they won't pay out... Dollar Tree?
I know that in the Province of Ontario, Canada, if you install electrical
circuits in your home and do not get it inspected and certified by a
qualified electrician and you have an electrical fire and your insurance
company finds out the electrical modifications were not inspected/certified
by an electrician, your fire insurance is null and void AND no other
insurance company will insure you.
Your choice, think about it...
John
VE7KKQ
On Wed, Mar 1, 2023 at 9:32?AM Dave Merrill <r390a.urr@...> wrote:
The inventory at Dollar Tree varies considerably from store to store and
visit to visit.
My son-in-law replaced some AC wall outlets with newer types that also
sport two USB charging ports. My daughter and family use Apple devices and
my wife and I use the same model of Android phone with USB-C. I dropped by
our local Dollar Tree and got two cables for us to leave at their place so
we didn't need to bring along chargers.
These cables had well molded strain reliefs at both ends and fabric braid
over the cable. They have been working great for the past few months and my
SIL also uses them on his USB-C gadgets. The only negative is the length -
just 1 meter.
Impressed by how well they worked, I went to a couple different Dollar Tree
stores by my SIL and near home and could not find them again anywhere.
Dave N9ZC
On Tue, Feb 28, 2023, 1:27 PM Jim Allyn - N7JA <jim@...
wrote:
On Mon, Feb 27, 2023 at 11:19 AM, Clyde Lambert wrote:
I purchased a couple of USB lead wires from Dollar Tree. They lasted about
three or four weeks, then the insulation started separateing from the back of
the connector housing. I've noticed that with some of the cables I have purchased from Dollar
Tree also, but mine are two or three years old, maybe more. Some are
plugged into and unplugged from the phone or other devices daily, sometimes
more than once a day. Maybe I'll buy some expensive cables some day, maybe
not. If you can recommend a brand that you think will provide better bang
for the buck, I'd consider buying some.
|
Re: reinforce cables with a bit of glue
They have an inventory of about 50 different USB cables of different types, colors, and lengths.Pick the one you think looks best.?? The only time I have had any issues with a USB cable was with a girlfriend.?? She would jerk the plug out of the phone pulling on the cable rather than grabbing the connector.
There are NO companies in North American making USB cables and power supplies.They are all coming from the same Foxcon plants in the PRC.?? Yes, Apple charges 10 times more for the same accessory that came out of the same plant.
Personal mods to equipment and accessories is the hallmark of hobbiest like us.
Gee .... after all, where did the Nano's come from! hihi
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On Wednesday, March 1, 2023 at 01:04:22 PM CST, Charles Young <ctyoung@...> wrote:
If the Dollar Tree cables look weak you might reinforce the back end of the connector-cable connection with a bit of super glue or epoxy.
Chuck KF8TI
|
The MS chip is not a clone. It is or was used in place of the SI chip due to unavailability of the SI chip.
Check the back of your NanoVNA.
If there is a MS at the end of the serial number, then use the MS version. If not use the SI version.
This has been addressed before.
KC7BJE
|
reinforce cables with a bit of glue
If the Dollar Tree cables look weak you might reinforce the back end of the connector-cable connection with a bit of super glue or epoxy.
Chuck KF8TI
|
Re: check "Dollar Tree" store. Now Dollar and a Quarter!
I would NOT use wall outlets, light switches or anything else that
physically attaches to my home and home electrical system.
Some Chinese manufacturers are well known for placing/marking their goods
with fraudulent symbols from testing organisations such as CE, UL and CSA.
It is your house, if saving two to three dollars over a known commercially
branded product is worth the risk of your house going up in flames, that is
up to you.
Who are you going to sue when your home insurance company has completed
their investigation and determined that your house turned into smoke
because of a fraudulently certified electrical fitting was the cause,
therefore they won't pay out... Dollar Tree?
I know that in the Province of Ontario, Canada, if you install electrical
circuits in your home and do not get it inspected and certified by a
qualified electrician and you have an electrical fire and your insurance
company finds out the electrical modifications were not inspected/certified
by an electrician, your fire insurance is null and void AND no other
insurance company will insure you.
Your choice, think about it...
John
VE7KKQ
toggle quoted message
Show quoted text
On Wed, Mar 1, 2023 at 9:32?AM Dave Merrill <r390a.urr@...> wrote: The inventory at Dollar Tree varies considerably from store to store and
visit to visit.
My son-in-law replaced some AC wall outlets with newer types that also
sport two USB charging ports. My daughter and family use Apple devices and
my wife and I use the same model of Android phone with USB-C. I dropped by
our local Dollar Tree and got two cables for us to leave at their place so
we didn't need to bring along chargers.
These cables had well molded strain reliefs at both ends and fabric braid
over the cable. They have been working great for the past few months and my
SIL also uses them on his USB-C gadgets. The only negative is the length -
just 1 meter.
Impressed by how well they worked, I went to a couple different Dollar Tree
stores by my SIL and near home and could not find them again anywhere.
Dave N9ZC
On Tue, Feb 28, 2023, 1:27 PM Jim Allyn - N7JA <jim@...>
wrote:
On Mon, Feb 27, 2023 at 11:19 AM, Clyde Lambert wrote:
I purchased a couple of USB lead wires from Dollar Tree. They lasted about
three or four weeks, then the insulation started separateing from the back of
the connector housing. I've noticed that with some of the cables I have purchased from Dollar
Tree also, but mine are two or three years old, maybe more. Some are
plugged into and unplugged from the phone or other devices daily, sometimes
more than once a day. Maybe I'll buy some expensive cables some day, maybe
not. If you can recommend a brand that you think will provide better bang
for the buck, I'd consider buying some.
|
I did a comparison calibration with the NanoVNA itself and NanoVNA app (DiSlord version) using a cable that was 30 cm (12") long. Results were better than the 3M cable I posted earlier but I think I will stick with NanoVNA calibration and no longer calibrate in NanoVNA app.
Hopefully DiSlord or Owen Duffy will investigate as they seem to be the only ones modifying this program.
Roger
|
On Wed, Mar 1, 2023 at 06:50 AM, Zdenek OK2BQN wrote:
Please what is the difference between NanoVNA-H-MS_20220831.dfu and
NanoVNA-H-SI_20220831.dfu ?
I have NanoVNA-H Version: 0.4.4-1-g42cc6a8 and I don't know which firmware to
choose from the two mentioned. Thank you very much for your advice.
During the pandemic there was a shortage of si5351 clock chips and Hugen (and some cloners) used a Chinese clone of this chip with a MS prefix. In some ways this chip was better but it had different characteristics so there is a software selectable option to select which chip is installed. The SI version defaults to original chip and MS version to the Chinese clone. But in either version you can change it in the menu. Your NanoVNA-H Version: 0.4.4-1-g42 is very old and was released in 2019 so you have the SI chip. Roger
|
Re: check "Dollar Tree" store. Now Dollar and a Quarter!
Hi Dave
I mirror your Dollar Tree experience.Got several? C's when they first came out, still using them, no issues.Also have several Cigar Lighter to USB power supplies for the cars.Have worked for years.
Kent
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Show quoted text
On Wednesday, March 1, 2023 at 11:32:40 AM CST, Dave Merrill <r390a.urr@...> wrote: The inventory at Dollar Tree varies considerably from store to store and visit to visit. My son-in-law replaced some AC wall outlets with newer types that also sport two USB charging ports. My daughter and family use Apple devices and my wife and I use the same model of Android phone with USB-C. I dropped by our local Dollar Tree and got two cables for us to leave at their place so we didn't need to bring along chargers. These cables had well molded strain reliefs at both ends and fabric braid over the cable. They have been working great for the past few months and my SIL also uses them on his USB-C gadgets. The only negative is the length - just 1 meter. Impressed by how well they worked, I went to a couple different Dollar Tree stores by my SIL and near home and could not find them again anywhere. Dave N9ZC On Tue, Feb 28, 2023, 1:27 PM Jim Allyn - N7JA <jim@...> wrote: On Mon, Feb 27, 2023 at 11:19 AM, Clyde Lambert wrote:
I purchased a couple of USB lead wires from Dollar Tree. They lasted about
three or four weeks, then the insulation started separateing from the back of
the connector housing. I've noticed that with some of the cables I have purchased from Dollar
Tree also, but mine are two or three years old, maybe more.? Some are
plugged into and unplugged from the phone or other devices daily, sometimes
more than once a day.? Maybe I'll buy some expensive cables some day, maybe
not.? If you can recommend a brand that you think will provide better bang
for the buck, I'd consider buying some.
|
Re: check "Dollar Tree" store. Now Dollar and a Quarter!
The inventory at Dollar Tree varies considerably from store to store and visit to visit. My son-in-law replaced some AC wall outlets with newer types that also sport two USB charging ports. My daughter and family use Apple devices and my wife and I use the same model of Android phone with USB-C. I dropped by our local Dollar Tree and got two cables for us to leave at their place so we didn't need to bring along chargers. These cables had well molded strain reliefs at both ends and fabric braid over the cable. They have been working great for the past few months and my SIL also uses them on his USB-C gadgets. The only negative is the length - just 1 meter. Impressed by how well they worked, I went to a couple different Dollar Tree stores by my SIL and near home and could not find them again anywhere. Dave N9ZC On Tue, Feb 28, 2023, 1:27 PM Jim Allyn - N7JA <jim@...> wrote: On Mon, Feb 27, 2023 at 11:19 AM, Clyde Lambert wrote:
I purchased a couple of USB lead wires from Dollar Tree. They lasted about
three or four weeks, then the insulation started separateing from the back of
the connector housing. I've noticed that with some of the cables I have purchased from Dollar
Tree also, but mine are two or three years old, maybe more. Some are
plugged into and unplugged from the phone or other devices daily, sometimes
more than once a day. Maybe I'll buy some expensive cables some day, maybe
not. If you can recommend a brand that you think will provide better bang
for the buck, I'd consider buying some.
|
As I said prior, there is no code difference, and either version will run. The issue is that the differences in the two chips will cause some off results if the wrong one is selected. If rhings ever seems goofy, change the setting and see if things improve (you do *NOT* need to reload!).
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On March 1, 2023 10:47:55 AM CST, Zdenek OK2BQN <ok2bqn@...> wrote: All resolved. I took a risk and flashed the firmware for the SI5351 using the NanoVNA app. Everything seems to be working. I am happy.
73 Zdenek
--
Sent from my Android device with K-9 Mail. Please excuse my brevity.
|
All resolved. I took a risk and flashed the firmware for the SI5351 using the NanoVNA app. Everything seems to be working. I am happy.
73 Zdenek
|
Based on what the code authors have stated, the two builds are identical with the exception of an advanced mode setting determining wich chip you have. To that end, you can load either and simply change to the correct setting. On many units,mthe de ices with the later MS chip will have an "M" in either the model or serial on the unit label (I forget which), but not all do this,
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On March 1, 2023 8:50:46 AM CST, Zdenek OK2BQN <ok2bqn@...> wrote: Please what is the difference between NanoVNA-H-MS_20220831.dfu and NanoVNA-H-SI_20220831.dfu ?
I have NanoVNA-H Version: 0.4.4-1-g42cc6a8 and I don't know which firmware to choose from the two mentioned. Thank you very much for your advice.
Zdenek
--
Sent from my Android device with K-9 Mail. Please excuse my brevity.
|
Re: Strange "Scatter" Sweep Traces VNA ver 1.1
Brandon,
It has to do with message # 31450
Should have linked them...
--
Chuck, W5USJ
|
From the description, it looks like a Chinese clone of the si5351, but I'm not sure. the board is v. 3.4 and the TCXO is 26 MHz.
Thanks in advance for any advice
Zdenek
|
Re: check "Dollar Tree" store. Now Dollar and a Quarter!
I'll gently argue tuis point! The "value" regarding price is never just what you paid, but the overall cost of use. If I buy a very good set of headphones for $100, and they last 10 years (not atypical in my experience), that's a cost of $10 per year. If I buy cheapies for $1.00, but only get a week out of them, that's $52 per year. Which one is the better value in the long run again? Within reason, buying a quality product (within reason) is rarely a bad decision and the cheap offshore junk often is . . . Obviously there is an occasional exception, but buyer beware!
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On February 28, 2023 3:03:16 PM CST, Terry Perdue <K8tp@...> wrote: Same experience with their headphones. Great price if they¡¯d last more than a week.
On Feb 28, 2023, at 11:27 AM, Jim Allyn - N7JA <jim@...> wrote:
?On Mon, Feb 27, 2023 at 11:19 AM, Clyde Lambert wrote:
I purchased a couple of USB lead wires from Dollar Tree. They lasted about
three or four weeks, then the insulation started separateing from the back of
the connector housing. I've noticed that with some of the cables I have purchased from Dollar Tree also, but mine are two or three years old, maybe more. Some are plugged into and unplugged from the phone or other devices daily, sometimes more than once a day. Maybe I'll buy some expensive cables some day, maybe not. If you can recommend a brand that you think will provide better bang for the buck, I'd consider buying some.
--
Sent from my Android device with K-9 Mail. Please excuse my brevity.
|
Gary,
unfortunately the version doesn't say anything about it. But it is on IO
5351
BAJD
929
I'll try to find it online
Thanks so much for your help so far
Zdenek
|
I don't have one, but I think you can check your currently installed version of firmware and it will be obvious. Look in the menu system to display the current firmware version.
Gary
W9TD
|
Dave Merrill
Clyde Lambert
Roger Need
Zdenek OK2BQN
Chuck Carpenter
Gary W9TD