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nanoVNA vs SVA1015X VNA (Need entry level VNA)

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tautech:
Any serious antenna work rules these cheap devices out.
Sure in a lot of the world 315 MHz is available for telemetry but in many other places it's reserved for other needs and 433 MHz used instead which is getting past where even the proponents of these devices ascertain is beyond their accuracy capabilities without even venturing into the popular 800 -900 MHz bands.

But then of course there are the LF Ham bands which do fall within cheap instrument capability.

joeqsmith:

--- Quote from: tautech on August 14, 2022, 08:43:27 pm ---Any serious antenna work rules these cheap devices out.
Sure in a lot of the world 315 MHz is available for telemetry but in many other places it's reserved for other needs and 433 MHz used instead which is getting past where even the proponents of these devices ascertain is beyond their accuracy capabilities without even venturing into the popular 800 -900 MHz bands.

But then of course there are the LF Ham bands which do fall within cheap instrument capability.

--- End quote ---

I think we paid about $130 for the LiteVNA which I consider cheap.   I soldered up a couple of pork and bean cans and swept the antenna with the Lite.     

https://www.eevblog.com/forum/rf-microwave/nanovna-custom-software/msg4175104/#msg4175104

I think this was tuned around 2.6G or so.   Data was collected using this software:
https://github.com/joeqsmith/Solver32-LiteVNA-V2Plus4

joeqsmith:

--- Quote from: tomud on August 14, 2022, 07:57:05 pm ---@joeqsmith

It's not even about money anymore, the price difference between nanoVNA is not that big. However, one gets a bit better dynamics and a wider frequency range.
I used to buy a lot of different equipment myself, but suddenly I ran out of space in my small workshop. I ended up giving these devices to my friends for free because I would have wasted more time selling on eBay etc than the hardware was worth. I think that if someone already has a spectrum analyzer with a tracking generator, they already have some knowledge of how to use such equipment so as not to damage it.

--- End quote ---

I also gave up selling on eBay years ago.  It goes to the recycle bins or I give it away.   My home labs becoming a bit of a functional museum. 

bd139:
700 items sold here including at least two NanoVNAs. Gotta eat  :-DD

rf-loop:

--- Quote from: graybeard on August 13, 2022, 01:14:41 am ---I have both a nanovna-f and .....

However the nanovna-f works far better at lower frequencies.  The price is much better too.

--- End quote ---

Imho, that model (genuine Deepelec, not a copy ) is a pretty good machine (in its price range). Well done. When I lived in China, I bought two of them directly from Deepelec official store, version 3.1. I brought them with me from there. Of course I also left some devices in China so I don't have to get it again later. Sure, it's much better than the old Nano V2. The Nano V2plus4 is a bit different and better in terms of dynamics,  although in terms of manufacturing quality it is almost at the poor level, when they don't even know or care how to attach the RF connectors correctly.  But it worked out with a little rework. On the other hand, Deepelc's F is manufactured as a completely decent well finished product, unlike many cheap devices in China, which are often made like with bare feet on the garage floor.

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