Fred, W9KEY

06.10.2022 ? #29768??

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Unsure if this thread is still open.... ?

But here we are, 10 months later, and I think the same exact questions still remain.? To be specific:

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1)? For NanoVNA-H4, which hardware version is the best - having proper MCU and included SD Card Slot?

?? - It appears version 4.2 is older and still sold by many authorized sellers, but is newer version 4.3 the better one to buy?

?? - After all this time, why are there still so many 4.2 versions for sale?? Is it because no one wants the older 4.2 version??

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2)? Will the latest Firmware revision run correctly with same features on both hardware version 4.2 and 4.3? ? I think DisLord firmware? V1.2.00 is the latest - correct??

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3)? Who is the best / trusted seller to purchase a proper functioning NanoVNA-H4, with all latest features / firmware?

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4)? Or is it better to buy a NanoVNA-F version 3.1 from www.deepelec.com by BH5HNU? ?

?? - That design seems to be well defined/stable and more clearly marketed. ?

?? - But maybe it is not equal in features to the latest -H4?? This is all very confusing!!!

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Pete Harrison

06.10.2022 ? #29769??

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Hi i have a H4 V4.3MS , had it just over a month and very happy with it so far.

Im not new to VNA's as have used professional HP/Agilent ones for years.

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I purchased mine from a seller in the UK direct, ie not via ebay.

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My version has a ARM 7E-M CORTEX M4F , PLATFORM STM32F383Xc and the clone synth chIp MS5351 hence the MS Suffix in the model number.

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It has been stable for me and i double checked a measurement on a 10MHZ BPF against an agilent analyser i have access to at work. The results were pretty much spot one. I should add i do have a HP calibration kit (SMA) and i havnt even used the supplied cal SOLT's.

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I just wish i could get J.Smiths labview software to run with it.

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Hope this helps Pete

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So what???? Why is this posted in tinySA on groups.io?

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Erik has said relative to the tinyFPA that you need a nanoVNA H4 .? I want to get a larger screened nanoVNA. ?

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My question is: is the nanoVNA H4 I were to buy today (21 Jan 23) OK relative to the tinyFPA firmware by Erik?? Simply, do I care what version I were to buy?? The question is best answered by Erik but I thought I’d ask here lest someone other than I is confused as well.

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To those who know and reply, Thank you! ? ? ? ? ? larry