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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Relationship between step resolution and sweep range?

TomS 2021/08/01 12:35

according to the specs should be the lowest frequency step 10KHz.
If I set:
Num sweep points  = 201
Start  435MHz
Stop. 436MHz

Displayed freq step  5KHz from data point to data point.
Conclution: Minimun frequency step is less than 10khz or the start stop range is in reallity differen than displayed or the real data points are different than showen on screen . Finally the diplayed values for each second datapoint (eg 435,005MHz) is interpolated.
Are there any ideas what the nanovna v2 p4 is doing in this case?
FW git-20210225-ebc366e

Greetings TomS

DiSlord 2021/08/01 14:09

Min frequency step in > 140 MHz range for official fw = 10k

You can select less range, but used frequency for any point = (int)(freq/10000)*1000

John Gord 2021/08/01 16:26

The Ojisan firmware for the V2 (original and 4 inch but, not plus or plus4) does allow smaller steps.  I think that they are 6kHz in the 2.2-4.4 GHz range, going progressively smaller on lower octaves.
--John Gord

On Sun, Aug 1, 2021 at 12:35 PM, TomS wrote:

DiSlord 2021/08/01 21:08

>Ojisan firmware for the V2
Yes (but ask about V2Plus4) Ojisan firmware for the V2 made 6k step, going progressively smaller on lower octaves.

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