So there's no need to search the forum or files section?
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On Thu, 15 Aug 2019, 13:24 Larry Rothman, <ac293@...> wrote: Clint - the Wiki IS the manual....
And yes, it DOES have the info members in the last few posts are looking
for.
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Clint - the Wiki IS the manual....
And yes, it DOES have the info members in the last few posts are looking for.
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"Is there any one vendor thats the best place to buy? Hal/WB4AEG"
A recent poster to this forum also said: "As for price, AliExpress
guarantees what you're buying or they refund."
Beware of warranties from Asian sellers! If you complain to PayPal or your
credit card company about a defective item, you will be told you have to
return the item to get a refund and you are responsible for the return
shipping. In nearly all cases those sellers include shipping in the sale
price so they aren't responsible for return shipping costs. The minimum cost
to ship a package from the US to China was about $23 the last time I checked
so shipping eats up 1/3 to 1/2 of your refund for a nanovna. Also, tracking
on shipments to China is iffy to say the least and sellers take advantage of
that.
After a bad experience with Bangood, where I lost $80+$23 for a defective
tablet, I make all my Asian purchases on eBay because the seller is always
required to pay return postage for defective items. In most cases the seller
will tell you to keep the defective item but not before trying to negotiate
a partial refund for their boat anchor.
73,
George
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With respect Larry, "search the forum, read the wiki, check these other
documents" sounds like exactly the reason why there needs to be a manual,
to gather that information into a single, concise document that can be
edited and contributed to as the device matures and develops.
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On Thu, 15 Aug 2019, 13:13 Larry Rothman, <ac293@...> wrote: Folks,
ALL the information you require is already in the various parts of this
forum.
Please use the SEARCH function or look in the FILES and WIKI areas.
There are also links to hugen's google drive area (link) that has ALL THE
INFO you need to operate AND flash new firmware!
Check the Wiki for links to documents on how to use a VNA.
Cheers,
Larry
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Folks,
ALL the information you require is already in the various parts of this forum.
Please use the SEARCH function or look in the FILES and WIKI areas.
There are also links to hugen's google drive area (link) that has ALL THE INFO you need to operate AND flash new firmware!
Check the Wiki for links to documents on how to use a VNA.
Cheers,
Larry
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How do I load the AA firmware? My friend wants to buy one for his antenna analyser work. Manual says it can be done, but no instructions. In fact where is the code?Sent from my Samsung Galaxy smartphone.
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-------- Original message --------From: Clint Sharp <cjaysharp@...> Date: 15/08/2019 13:06 (GMT+01:00) To: [email protected] Subject: Re: [nanovna-users] Manual Yes, emphatically yes. I'm hopeful mime will have arrived by the time I'mhome from work today so I'll need a helping hand and a good manual will beinvaluable.On Thu, 15 Aug 2019, 03:29 Vince Rooney, <vince@...> wrote:> Now that I¡¯ve received mine and have begun devouring the posts on this> site and other info to learn more and enhance the usefulness of this> amazing little kit. I was wondering if there would be interest in starting> to put together a ¡°manual¡± that can help everyone here and newcomers on the> device. Something maybe in google docs?>> >>
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Yes, emphatically yes. I'm hopeful mime will have arrived by the time I'm
home from work today so I'll need a helping hand and a good manual will be
invaluable.
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On Thu, 15 Aug 2019, 03:29 Vince Rooney, <vince@...> wrote: Now that I¡¯ve received mine and have begun devouring the posts on this
site and other info to learn more and enhance the usefulness of this
amazing little kit. I was wondering if there would be interest in starting
to put together a ¡°manual¡± that can help everyone here and newcomers on the
device. Something maybe in google docs?
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I got mine from Ebay, it was a Black one. I found that the sma connectors were only soldered on the center pin, so had to solder the earths.
This one had green led's
G4XGN
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Re: NanoVNA does not want to start -solved
Well ...I bought 2 ...One from Guangyi0016 (has red leds) and one from hugan (has blue leds) ...both look/work/calibrate identical ..shields on both are open ends..
Jim
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On Wednesday, August 14, 2019, 8:57:59 PM UTC, Peter Mulhare <peter@...> wrote: Hello All, My nanoVNA did not exhibit these problems, and from delivery some weeks ago, has always started whether on? a Power Supply or on Battery alone. However one thing strikes me when people are talking about this condition is that the 'faulty' ones all seem to have blue LED's in them!? Mine has red LED's.? I know this may sound a bit silly,? but is it due to the type of LED's used in these units the real cause of the problem?? Remembering that different coloured LED's have completely different 'lit' voltages.? This voltage variation could cause faulty operation of the IP5303? FWIW 73's Pete ZL2iK -----Original Message----- From: [email protected] [mailto: [email protected]] On Behalf Of Joe F. KC8RKL Sent: Thursday, 15 August 2019 06:44 To: [email protected]Subject: Re: [nanovna-users] NanoVNA does not want to start -solved Hello all- I ordered a NanoVNA on eBay and received a black version in a plastic case with mixer shielding and accessories (cables and calibration kit). Mine was like Herman's; it would boot when powered via USB but would not boot via the battery using the ON/OFF switch even when 'fully charged' with the blue charge indicator full-on (without flashing). I read Herman's post and wondered if maybe the IP5303's 'KEY' function state is not guaranteed when leaving the chip factory. So I found a junkbox leaded 10K resistor, bent the leads into a 'U', and touched one end to the battery minus (i.e. IP5303 ground/EPAD) and the other to the IP5303 'KEY' pin (pin 5) for about 1 second. The blue charge indicator came full-on for about 30 seconds, then switched off. But now it boots via battery using the ON/OFF switch! I don't know how long this state will persist- perhaps until the battery discharges completely or is disconnected. This may also have implications for people who received units which functioned normally upon arrival- if their battery goes completely flat, does the IP5303 go into a sleep state requiring the 'KEY' pin to be pulled down 'briefly' via a 10K resistor? I don't know the answer. Anyway, thank you Herman for the fix! 73, Joe F. KC8RKL
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Now that I¡¯ve received mine and have begun devouring the posts on this site and other info to learn more and enhance the usefulness of this amazing little kit. I was wondering if there would be interest in starting to put together a ¡°manual¡± that can help everyone here and newcomers on the device. Something maybe in google docs?
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I originally ordered mine from Ebay. It was an auction, and I won it for $40. I guess it was too cheap, so the seller claimed it shipped, wasted a month, and refunded my money. It was the non-shielded version as well. That was why I turned to Aliexpress. I felt more confident I was getting a good one, especially based on reviews here of the seller.
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I just received mine today. It took 9 days to arrive. It¡¯s the white version that has the SA612A chips and was loaded with the 900mhz 2 trace software. It does not come with cables. Does come with calibration modules and USB C cable. It was in perfect condition. Double boxed and bubble wrapped inside. The outside box was a little squished, to be expected as it was pretty small and probably packed with a lot of other goods coming ashore through customs. Very happy with it and impressed even for a clone. Will make some enhancements like shielding and a better case. Here is the vendor:
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Based on delivery estimate, it probably comes from China. If you're going to order from China, might as well get it from Ebay and have many more choices.
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Maybe it was the selling blaming Aliexpress for the surcharge then.? Whatever.
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On 8/14/19 4:49 AM, Gerry Kavanagh via Groups.Io wrote: Aliexpress DOES take paypal, however there is a small service charge (~$2) for this.
I just ordered from one from them. It's probably worth stating that you are not ordering from Aliexpress. Aliexpress is a marketplace, in much the same way as eBay or Amazon Marketplace. They provide a platform, and an escrow system to ensure the buyer is happy before payment is released to the vendor.
I get that this is a small distinction to many, but it's worth being clear.
73
Gerry
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Re: Using the NanoVNA as a Grid Dip meter
Have not tried with the VNA, but have done with a SNA and RLB. Just need a pickup coil. Here is some info on my blog about that method I used,
Only thing to watch for with the NanoVNA is it only uses about 100 points in its sweep. If your sweep range is too wide you can easily miss a dip.
DuWayne KV4QB
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On 8/14/2019 5:13 PM, rchadwick7 via Groups.Io wrote: I always thought Grid Dip meters were cool, but it seems a VNA can be used as a Grid Dip meter. Has anyone done this? Does the unit need to be calibrated in a special way? Is the output loop critical to frequency? Or would a few turns be good for anything?
--
DuWayne? KV4QB
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Using the NanoVNA as a Grid Dip meter
I always thought Grid Dip meters were cool, but it seems a VNA can be used as a Grid Dip meter. Has anyone done this? Does the unit need to be calibrated in a special way? Is the output loop critical to frequency? Or would a few turns be good for anything?
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Re: AliExpress and NanoVNA supplier get 5 stars
I purchased from Guangyi0016 as well. Ordered it on July 26, arrived today. It took about a week to ship, but otherwise OK. The shields are open on the ends, but I'm sure it's better than the unshielded models.
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Re: NanoVNA does not want to start -solved
Hello All,
My nanoVNA did not exhibit these problems, and from delivery some weeks ago, has always started whether on a Power Supply or on Battery alone.
However one thing strikes me when people are talking about this condition is that the 'faulty' ones all seem to have blue LED's in them! Mine has red LED's. I know this may sound a bit silly, but is it due to the type of LED's used in these units the real cause of the problem? Remembering that different coloured LED's have completely different 'lit' voltages. This voltage variation could cause faulty operation of the IP5303?
FWIW
73's Pete ZL2iK
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-----Original Message----- From: [email protected] [mailto: [email protected]] On Behalf Of Joe F. KC8RKL Sent: Thursday, 15 August 2019 06:44 To: [email protected]Subject: Re: [nanovna-users] NanoVNA does not want to start -solved Hello all- I ordered a NanoVNA on eBay and received a black version in a plastic case with mixer shielding and accessories (cables and calibration kit). Mine was like Herman's; it would boot when powered via USB but would not boot via the battery using the ON/OFF switch even when 'fully charged' with the blue charge indicator full-on (without flashing). I read Herman's post and wondered if maybe the IP5303's 'KEY' function state is not guaranteed when leaving the chip factory. So I found a junkbox leaded 10K resistor, bent the leads into a 'U', and touched one end to the battery minus (i.e. IP5303 ground/EPAD) and the other to the IP5303 'KEY' pin (pin 5) for about 1 second. The blue charge indicator came full-on for about 30 seconds, then switched off. But now it boots via battery using the ON/OFF switch! I don't know how long this state will persist- perhaps until the battery discharges completely or is disconnected. This may also have implications for people who received units which functioned normally upon arrival- if their battery goes completely flat, does the IP5303 go into a sleep state requiring the 'KEY' pin to be pulled down 'briefly' via a 10K resistor? I don't know the answer. Anyway, thank you Herman for the fix! 73, Joe F. KC8RKL
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Re: List of NanoVNA Console Commands
Can someone explain the values in the data array?
Thanks
Joe
W3JDR
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Re: Measurements on my NanoVNA
The NanoVNA specification for frequency accuracy is +- 0.5 Parts Per Million. At 30 MHz it would still be in spec if the frequency error was as high as 15 Hz. My unit measures 220 Hz low at 900 MHz which is 0.24 PPM and is well within the specification.
Warren Allgyer
WA8TOD
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F4WCV
DuWayne Schmidlkofer
Peter Mulhare
Warren Allgyer