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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

You use my fw on V2Plus4? In v1.1 i extend points count to 401 and port all features from H/H4 (all V2 models), XTAL measure not work on V2Plus4 (you not see correct measure on display). Measure on

Hello DiSlord, Thank you! This is exactly the information I was looking for! I appreciate your response and your excellent NanoVNA firmware work. I updated all three of my units (H4, SAA2N and

Also i write on this forum (need translate from Russian): Cable measure and renorm

CABLE - this cable measure util, need calibrate nanoVNA and connect cable (there should be nothing on the other end of the cable) NanoVNA measure cable wave impedance, length (need setup correct

Interesting. NanoVNA firmware is heading towards being an operating system that hides the details of the underlying hardware but still delivers comparable capabilities. - Roland 9V1RT

Top is the Tram RG8X on Transform sweep. Bottom is the Tandy RG8 on transform sweep. I haven't set up for another S21 check yet, but can anyone see anything in here that I might be missing?

I did some work attempting to measure crystals with the original Nano. https://youtu.be/scZ3kZ4Q2sQ?list=PLZSS2ajxhiQD2gftdurGQoyGpUM_HobNI&t=1232

Alan, I love your videos, some of the best, and I have learned so much from them!