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Dear all,

I'm about to buy 2 nanovna's. What are the do's and don'ts to look out for.
Don't want to start a message chain, just looking for the basics, like firmware version, the black nanovna has some shielding, etc.

Thanks in advance for any answers.

br Jan PA3GSV

What are your intended uses/frequencies?

I have both the -F and the -H4. Either are great performers for the
amateur. Personally, I don't like the small screen versions (my eyes are
73 years 'young'!). The -H4 covers up to 1.5 GHz where the -F covers to 1
GHz. The original covers to 900 MHz (which I also have). All are
improvements over the initially offered units.

All the NANOVNA offerings provide *far* more than the average 'antenna
analyzers' marketed into the amateur market. There will be a learning
curve if you are not used to professional RF design and measurements using
complex impedances and the Smith Chart. But they are more than worth the
energy and time spent learning about the 'nitty-gritty' of RF parameter
measurements.

Dave - W?LEV

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*Dave - W?LEV*
*Just Let Darwin Work*
*Just Think*

On Thu, Mar 5, 2020 at 09:02 AM, David Eckhardt wrote:

The -H4 covers up to 1.5 GHz where the -F covers to 1 GHz. The original covers to 900 MHz (which I also have). All are improvements over the initially offered units.
====================================================
David,
I think you need to upgrade your NanoVNA-F firmware to FW v0.1.1 as it extends the frequency coverage to 10 kHz - 1.5 GHz. I agree that that either the -H4 or -F models would be a better choices over the 2.8" NanoVNA-H.

- Herb

hi Dave,

I am looking where and what to buy. One of the VNA's is for my friend at work, the other for myself.
We would both opt for the 1.5 GHz version despite the low dynamic range there. Probably use some SMA to N pigtails and built it in a cabinet of some sort. (so N type cal kit is needed)
There is a benchtop and some portable VNA's at work, but I have to borrow them in time etc. and they're never around on Sunday if you want to try something.

Did not know they came in different screen sizes? Well, I'm twenty years younger, but bigger is also for me better in this case :-) .
But it seems you can connect them to a PC which makes life easier :-)

br Jan PA3GSV

A ham supply shop, R&L, was recently advertising the H4 for $59.95 and a buddy got one early this week. Today they say out of stock. But now they also show the 2.8 inch model for $49.95.
Link:


Doug

Doug,

Can this be confirmed it is a REAL H4?

73

Glen K4KV

Oops: Can this be confirmed?? Is it a REAL H4?

Hit SEND too soon...

Thanks everybody for your feedback and recommendations.
Just ordered 2 sets H4 at Maggie's.

Jan PA3GSV

Yes I believe it is a real H4. I just got it, a couple of weeks ago from R&L.
Here's the version info in the unit.

Version: 0.4.5-7-g57d62f2
Build Time: Jan 1 2020 17:27:30
Kernel 4.0.0
Arch. ARMv7E-M core variant: Cortex-M4F
Port Info Advanced kernel mode
Platform: STM32F303xC Analog & DSP

Here is the info on the label on the back cover of the unit.

Frequency:
50K-300MHZ
300M-900MHz
0.9G-1.5GHz
Power:5V USB (1A Max)
HW version: 4.2
SN: H4-200109xx

Hope this info helps.

73
Pete NU1W

Sorry, I'm a little late, but no, I cannot personally confirm it. The friend who got one is very impressed with it, but is a thousand miles away, so I can't examine it. The seller is a very large supplier of radio/electronics equipment and I feel "should" be reliable. But hey may not know of the variations. The employees there would be hams, but not likely RF network engineers. A potential buyer could ask them directly, and should. Also ask about return privilege if it's unsatisfactory.

Doug