开云体育

My opinion aligns more with David. The basic question is if this is a product support group or a private group for developers or otherwise includes proprietary information. If this forum is only for

Hope it’s not old news, but I just ordered one at Walmart.com for ~$38.

go to walmart .com you get it there for a couple bucks more 3 day delivery and ou know you haven't been scammed. But also, read the fine print because you only get bare bones, no cables, no

Dave, excellent information. I have 3000+ purchases on eBay. Lots of items from China. I always do as you suggest, check the Seller's Feedback and number of sales. Just one last thought...…

For those that want to experiment with a nice tool to add/remove transmission/coax line impact there is this very advance excel tool https://ac6la.com/zplots1.html#Overview It requires excel from

Hi all, today I performed a NanoVNA calibration test to find out if the coax cable length and quality has any negative influence specially on the S11 return loss. The calibration setup is 10kHz-900MHz

Simulated port extension methods,: 1. 1 - 500Mhz sweep shorted RG-58C/U (Belden 8262) 2. subtract ideal coaxial line 3. subtract datasheet loss data coaxial line 4. subtract datasheet loss data

As this ("deal on ebay") has been a recurring theme for some time (these sorts of offers happen on other items, nanovna is one of the subject items for this sort of spam/scam), I would like to suggest

A firmware upgrade for the NanoVNA was just announced by edy555: "Just released ,NanoVNA firmware 0.5.1 , add marker function 'group delay to electrical delay" Hard to translate the Japanese

Of course. Port extension not ideal. Simplest method only compensated the electrical lenght. More advenced method use simple frequency depend loss model. Best the complex model.

Hi David, Maybe because members of the group have disclosed the information to the group - if you are interested, you have to log in. This is the case elsewhere. The -F group is another group, if you

Hi Sam, Take care with port extension. At low freq you can get away with it without much error. However, as you go to higher freq, it can really mess things up. Better off knowing what the fixture

Has anyone considered using TNC connectors? Not as heavy as N Types and, according to Amphenol, good from DC to 10 Gig. Paul

Larry, While I appreciate your abundance of caution, I have observed that these flat batteries "just begin" to swell almost immediately (i.e., a fraction of a mm and they will spin on the desk) after

I agree with David. I bought a Nano VNA which is very good for the money but my eyes are not good enough for it to be of any use as a portable instrument so I immediately ordered a NanoVNA-F purely

[email protected]> wrote: I agree with David - weight is not an issue. I think if Hugen wants to sell these in a reasonable quantity, I think the screen will need to be at least as big as the

Thanks for the info A few thoughts: EN for the ble module could be useful to shut it down as much as possible to lower the noise, or should we cut off its VCC in this case a p-chan mosfet on the VCC

What is the resolution of the 4” display you intend using? Is it less than the the NanoVNA-F? If so, I would not buy one. The NanoVNA-F comes with a 5600 mA hr battery, which I believe will run the

I would like to see the archives, files and Wiki open, so that it may encourage others to join the group after seeing the available material. Why block information which members have freely