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Looking for an approved vendor Aliexpress (Zeenko Store) without success. Where to buy a NanoVNA H4 HW rev 4.3? -- 73 de dl1ecd, Erik

Thank you, John, I'll do that!

Alex, You might want to ask in the NanoVNA-F group: /g/nanovna-f --John Gord

I've got an used NanoVNA-F by sysjoint. It shows: Version: Firmware 0.1.5 Frequency: 10k to 1,5GHz Build time: May 17 2020 etc.. My questions are: Which version have I got and is there a new firmware

OK thanks! Got it! Zack

It's Hugen's release: https://github.com/hugen79/NanoVNA-H/releases/tag/1.0.71

Having your device connect with DefuseDemo when it is in DFU mode is not the same as in normal running mode - there are 2 different drivers. Before going any further - Verify when you connect your

Where did you find this firmware? I can't seem to find that version (20211121) anywhere. 73, Zack W9SZ wrote:

Thank you for answering DiSlord. The programs that I try to use are Nanovna, Nanovna-APP, Nanovna-Saver and Nanovna-Sharp. All work with the original firmware v0.5.0 20200221 but the aforementioned

I check NanoVNA Sharp MOD v3 /g/nanovna-users/message/5406 This very old software, and can work if on device selected 101 points (STIMULUS->SWEEP POINTS->101) This problem also

When writing a bug report, it is good practice to provide as detailed a description as possible. Worked with everyone, which ones? What does it not work with? How does it manifest? The device is not

I have DiSlord's latest FW in my H and it is working fine with PC software. Can you talk to your H4 console using a terminal program? I use TeraTerm for that. If you can talk using a console

I am a rookie in Nanovna but not in electronic and computer skills. I am 45 years old radioamateur. My problem is that my NanoVNA-H4 with original firmware of 20200221 works perfectly with all PC

Joe, Here is what the circuitry looks like at the SO239 connector on the MFJ 259B. The diodes have a Peak Inverse Voltage of 15V so it does not take much of a mistake to destroy them. I Roger

Joe, I suspect you need more than re-calibration! The MFJ is not that accurate to begin with and only needs calibration if it was done poorly at the factory (this happens at MFJ) or you have replaced

On 12/1/21 9:22 AM, Joe WB9SBD wrote: > Morning all! > > I love my NanoVNA-H4. it JUST NOW probably has saved me from really screwing something up. > > My local club has a MFJ-259 analyzer. that we

The MFJ, It's the local clubs that they loan out to people to use. I know it's messd up so thought at least make it as accurate as it can be for them. Joe WB9SBD

The only resistors that you should use are smd resistors. Use 0805 or 0603 sizes. For 50 Ohm, best results can be obtained with two 100 Ohm resistors in parallel. Short is a copper disk, open is a

Morning all! I love my NanoVNA-H4. it JUST NOW probably has saved me from really screwing something up. My local club has a MFJ-259 analyzer. that we know is way out of wack. it needs re calibration.

This is great info, Dislord. Many thanks for your continued support. John, wa3jrs