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Thinking about upgrading my very early NanoVNA to a 4" screen version. What is the difference between the H4 and V2? Which one should I go for. Thanks.

Regards

Colin



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I am very happy with my H4, and would definitely get it, unless your
primary use case is at frequencies in the GHz range. The V2 plus4 has a
purportedly better design for the highest frequencies, and has a top freq
of 4GHz, if I remember correctly.

But for HF and VHF useband non-critical work at the higher GHz frequencies,
I don't see much advantage to the V2. The H4 is an excellent device and has
more active firmware support, which has resulted in some excellent
features.

Stan

Go for the LiteVNA 64 as it is the current design with the most active software development at this time and exceeds 6GHz.

Manufacturer's website:


US seller:

On 3/10/22 4:51 AM, Larry Rothman wrote:

Go for the LiteVNA 64 as it is the current design with the most active software development at this time and exceeds 6GHz.

Manufacturer's website:


US seller:

Is there a schematic published?

One issue with some of the later variants on the original NanoVNA is that they are *much* more sensitive to ESD (because they use RF switches on the inputs).? The NanoVNA has resistive pads/bridges and is pretty tolerant to ESD and weird voltages.

On Thu, Mar 10, 2022 at 05:53 AM, Jim Lux wrote:

1. "Is there a schematic published?"

The LiteVNA is not open source so hugen has not released a full schematic. This is not intended to impede users, but rather to slow down the inevitable introduction of LiteVNA clones. If a user wants to make a hardware modification to his LiteVNA, hugen has released a partial schematic to assist him on request.

2. "One issue with some of the later variants on the original NanoVNA is that they are *much* more sensitive to ESD (because they use RF switches on the inputs).? The NanoVNA has resistive pads/bridges and is pretty tolerant to ESD and weird voltages."

The LiteVNA uses the same input ESD protection introduced on the tinySA spectrum analyzer that hugen also manufactures. This was pre-emptive addition to ESD harden the input of the LiteVNA.

Herb

Yes,go for the LiteVNA 64 is good, I use? the price is ceep and the firmware is the best.
*Sent:* Thursday, March 10, 2022 at 12:51 PM
*From:* "Larry Rothman" <nlroth@...>
*To:* [email protected]
*Subject:* Re: [nanovna-users] Upgrading
Go for the LiteVNA 64 as it is the current design with the most active software development at this time and exceeds 6GHz.

Manufacturer's website:


US seller:

On Wed, Mar 9, 2022 at 10:49 PM, Colin Coker wrote:

"Thinking about upgrading my very early NanoVNA to a 4" screen version. What is the difference between the H4 and V2? Which one should I go for. "


The NanoVNA-H4 has a high-end frequency of 1.5GHz. The V2 family of VNA's have high-end frequencies of 4-6.3GHz.

If you only plan on using your VNA below 300MHz, then NanoVNA-H4 has the best performance and lowest costs of the 4" VNA's. The V2+4 and LiteVNA64 are my upgrade choice for use up to 4GHz. The LiteVNA is currently my choice for testing up to 6.3GHz.

Overall, I agree with Larry and would choose the LiteVNA if I was upgrading to a 4" VNA for the following reasons:

1. It has a faster processor and more memory which allows it to have up to 1024 display points versus up to 401 display points for the V2. This is on the device itself not from the PC application.

2. It has a micro-SanDisk drive for saving screenshots and S1P/S2P files.

3. The additional memory allows more features to be added to the LiteVNA which makes it more future proof. The current firmware makes use of the additional memory by adding 4 more trace memory storage locations which are very helpful when comparing and documenting different devices.

4. It has a serial interface on-board for adding a wireless connection. This requires the user to buy and install additional components.

5. Display brightness control can be set from the "CONFIG" menu.

6. It has a real-time clock already installed. The time and date can be set from the "EXPERT" menu and are useful for automatically time-date stamping files saved to the SanDisk drive.

7. It has a rudimentary FFT function useful for comparing the magnitude of harmonics if you don't have a specan or scope with FFT on hand.

8. It has a battery level display screen display.

9. I has a floating-point processor unit which some V2's do not.

Herb