Beware of cheap underperforming clones

As of 2022 there are many badly performing clones on the market. V2/3GHz NanoVNA uses parts like ADF4350 and AD8342 which are costly and clones have been cutting costs by using salvaged or reject parts.

See official store and look for V2 Plus4/V2 Plus4 Pro versions only to avoid getting a bad clone. We have stopped selling V2.2 versions since October 2020, so all V2 hardware that are not Plus or Plus4 are not made by us and we can not guarantee performance.

NanoVNA V2 Forum

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help for a newbee with a V2 PLUS4

barnc4br 2020/12/19 21:34

nothing like having a new V2 PLUS4, right? Well, if I wasn't a total newbie, maybe yes.
I got this yesterday, turned it on and it looked great. Then I started playing with it. I looked at a BPF on the demo board.
Then I tried to calibrate it and am getting some strange results.
I can recall the locations that I saved after calibrating. So, right or wrong there is saved data there
When I recall either of 2 locations (0 or 5) set at 433 MHz I get a clear screen as opposed to the spaghetti screen I get for location 6 which is 6.5 MHz center freq.
For this one I must do a RESET to get a functional screen, which seems perfect. But that clears the cal data, right?
I cannot find what RESET ALL does. Any clues. I'm guessing it resets the saved data.
Calibration for both of these were done the same way at the center freq of each.

The question is, WHY am I getting the spaghetti screen that I must reset to clear?

barnc4br 2020/12/20 08:42

== Well, apparently, it was just some garbage in SAVE 0. When I copied a "good" location to SAVE 0 everything is good now. Seems like a number of people have done whatever I did to create this, so that was my solution.

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