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I'm considering using anti-static polyethylene foam sheets cut to fit in a case I have for my RF test gear. My thinking is that polyethylene is more stable than the other foams out there. 2 sources I

Stuff you can do with some VNAs sweep a filter with many sections and narrow bandwidth (i.e. lots of envelope delay) sweep a crystal (sort of like above) testing an amplifier looking for a "small"

Folks, to help with the issue DiSlord described below, I modified the DeFuse utility interface buttons to have better meanings.? Please download the zipped file from the forum's file section. It's

I paid more for a good used HP 85032B N calibration kit for my 8702B than for the LibreVNA. The LibreVNA has a spectacular price performance ratio and decent specifications to 3GHz, 3-6 GHz is a bonus

Most ofen mistake - user upload fw from device to CPU (use upload action) and rewrite downloaded firmware. After correct use Upgrade button - user just reload old firmware stored in downloaded file.

This is how it should look when DfuSe is started. Put the NanoVNA-H4 in DFU mode beforehand. When the NanoVNA-H4 is put into DFU mode, the PC emits a beep (USB port ready). Is that how it looks with

I have had my Nano VNA now for about 10 months and I think I have now exhausted everything I can do with it. A year ago I could not tell you what the letters "VNA" even mean (I did know what nano

You have updated FW 0.5.0 (Hugen) to 1.0.39 (DiSlord). What a software have You used for FW flashing? Vladimir

Have You tried 1. DfuSe 2. NanoVNA-APP 1.1.206 for FW flashing?

John: I ordered and received a LibreVNA from R&L Electronics, was pleased at the price ($429 vs $599 at Amazon), ordering and delivery, and quality of the unit. The software is a work in progress but

I press the function wheel + turn on and no "Available DFU Devices" appear in the software. I can import the new firmware but not upload to device. It is a Nano VNA-H4 HW Version 42 S/N H4 20050921.

Good Catch. I did the S21 (through the RLC series circuit center conductor of coax) but I forgot - the S21 is already loaded at 50 ohm internal. so the first time I did the trial, I had R=100 ohm and

One thing to realize about the LibreVNA is that it has no screen.? Your PC or laptop is the display and processor.? The performance I get with a USB 3.0, 16 Gig RAM, four core 3.9 GHz processor

The LibreVNA is available from Zeenko store on AliExpress.? The price is $399 + shipping which was $39 to the US.? They have roughly 30 left out of the 100 initial run.? I see other stores now

I purchased a NanoVNA-F a few weeks or months after first buying a 2.8 inch NanoVNA. I wanted the -F for its MUCH better screen - I could not read the screen of the first, smaller unit while outdoors

Preliminary nanovna V3 details: https://nanorfe.com/nanovna-v3.html /g/NanoVNAV3

On 6/26/21 4:02 PM, Kent AA6P wrote: > I didn't initially notice Larry's comment that pulling the USB cable extinguishes the Battery LED. My NanoVNA-H4 does not operate that way so maybe the

I didn't initially notice Larry's comment that pulling the USB cable extinguishes the Battery LED. My NanoVNA-H4 does not operate that way so maybe the difference is the FM5324B chip. The Battery LED

If you want to do full two port forward and reverse measurements the VNWA-3SE and LibreVNA supports this feature. The others do not. SDRKits has excellent support and the LibreVNA looks impressive.

Thanks for the comments, Jim - and for the potential offer. Yes, they nano 2 docs specifically mention that it cannot be used for measuring crystal parameters. I had been looking at a LibreVNA - I