开云体育

I purchased my vna-h from Amazon prime. About 70 usd. Fulfilled by seesii , which when googled seems to be a U.S. outlet for alibaba. It came in the nice gold lettered box with all the accessories and

Hi Dave, First You must upgrade the hardware of Your device. - remove R29, R30 and R31 - replace R13 by 0 Ohm - replace R9 by 200 Ohm - replace R24 by 91 Ohm - replace R22, R23 by 49.9 Ohm - replace

Reed, you are right. Aexample, i order small low cost items. They used to come as free economy post. 30 to 50 days. For a $2 item i feel bad to pay 15$ shipping

I got a NanoVNA from China a few weeks ago (purchased through Ali Express). It took a long time to get here - about 1 1/2 months. Zack W9SZ

Hi Erik Thanks for your swift reply. I was aware of the wiki but haven't found reference to how you ascertain if a particular nanoVNA is (or isn't) upgradeable to higher frequency operation. (1.5GHz)

I doubt that you'll have any issues getting your order but you may be required to pay a higher shipping charge. I regularly purchase from a company based in Hong Kong, On my latest order, under $20

So, where and from whom did you hear this? I am in the importing business and have zero problems importing from anywhere - lead-times on OEM materials are shorter right now if anything. Please send me

Everything you always wanted to know and much more: /g/nanovna-users/wiki -- NanoVNA Wiki: /g/nanovna-users/wiki/home NanoVNA Files:

Hi newbie here, I have to admit I was tempted to buy a 'nanoVNA' off Ebay without knowing about this group or the plethora of different nanoVNA's, their extended ranges and 'clones' . So the one I

I wanted to add a larger capacity battery to my NanoVNA and protect it from getting damaged, so housed my device in an enclosure from Standard Supply Electronics obtained at

Buying is not a problem. Getting it from china to the US is a problem. A lack of available freight aircraft. I noticed that DeepElec has now gone to DHL for shipping rather than use the slow route.

Sorry not relavent here.

I receved one that reached india in march and no issues. . I cut the outer cover and disposed off. I am safe, so far. Lol Sarma vu3zmv [email protected]> wrote:

I am hearing that some people are not able to buy NanoVNA units from China due to quarantine related issues... has anyone here encounterd this?

I'd think if you did a cal for the typical hf range of freq (1.8Mhz to say 30Mhz) you'd likely be OK. The swr reading may be off a little but when tuning an antenna you're looking for the swr dip. The

Hi Mark and Bob, The real reason is: The NanoVNA, due to it's very limited internal memory, has only 101 calibration points - by far not enough for a GHz wide frequency span: Each point is some 10 MHz

Mark, Bob is right, especially if you are doing measurements right at the NanoVNA connector. The interpolation of calibration points taken over a wide span works pretty well if connection lengths are

You don't have to keep recalibrating.? Once done, you save the parameters and recall it each time. Just do the calibration over the entire frequency range and you are done calibrating. Bob

Put my new nanovna-H4 to work this afternoon tuning up a new MFJ Cobweb. Prett amazed at this $50USD device. Every time I changed bands I did a calibration. When I had an antenna analyzer I never had

Thank you to all for the replies. I have purchased a NanoVNA-H4 from Gigaparts. It seems to be a pretty nice unit. It came in a deluxe box with three loads, two USB-C cables, two short SMA-terminated