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Sucess !!! Thanks Larry, I downloaded 1.0.45, and followed the same steps I did before and it loaded fine with the original DFU app....somehow the 1.0.39 must have been kludged somewhere....

Very nice compilation! So what is up with the PVC insulation? I know that PVC is particularly bad in terms of dissipation factor - but is it insulation self heating or just getting melted by a hot

Many thanks for the link to that document... I just ordered a NanoVNA, and am getting ready for it. 73, and thanks, Dave (NK7Z) https://www.nk7z.net ARRL Volunteer Examiner ARRL Technical Specialist,

For a different perspective, G3TXQ's Common-mode Choke webpage discusses why reactive (e.g. inductive) common-mode chokes are undesirable, and he gives an example of an inductive common-mode choke

Jamie, I think you've overwritten the existing copy with a dump from your device. Delete the firmware you're trying to update with and get a new copy from the files section of the forum - use 1.0.45

Yea, tried that, no joy....followed the W2AEW YouTube video ( mine is exactly like his), works great, until I restart, still says 0.5.0.....I’m going to try Larry’s modified GUI next....thanks...l

Jamie, It's in the Misc folder: /g/nanovna-users/files/Miscellaneous Rename the original defuse.exe to defuse.orig.exe and then drop in the modified one - there are two: One with

See Absolute_Beginner_Guide_NanoVNA_v1_6.pdf, page 49. The PDF file is in the file section . 73 Martin 9A2JK

Ed, unfortunately I did not measure that parameter. Most of the readers are just interested in dB attenuation so I didn't measure the complex impedance. However, the inductance of the CMC is

Great work Dave. Thanks for your continuing contribution to our great hobby. Do you have in your stash a piece on conversion of dB attenuation to Zs= Rs + Xs ? 73, Ed McCann AG6CX

Larry, what folder should I look in? I see a couple files from you but am missing a modified EXE file....

On encouragement from a few posters, I have updated my construction and measurements of quite a number of CMCs. My hope and goal in all this is to encourage others to construct something simple which

You saved the device few to the same name as the new fw... you've overwritten it.? Read the wiki about defuse and grab my modified exe.in the files section with better naming of commands.? Also,

I did do the verify, it says its loaded.....but whn I go to config, to the splash screen, it says 0.5.0.....is that display a hardware or firmware version?

I think you use Upload Action button (this mean read firmware from device and store to selected file), check file size - should be 128k Need use Upgrade oe Verify Action buttons, select choose... and

I have a NanoVNA-H4, edy555 design, it says I have version 0.5.0 Feb 21-2020. I downloaded v1.0.39.rar, extracted it using 7 zip, am running the DfuSE demo softwate, I place the unit in DFU mode by

This is pretty late in the game, but it also depends on your receiver. Ham radio equipment is (usually) designed for 50 ohms, but SWL type radios typically had higher impedance antenna inputs. Are you

Hi,? Dan, My experience with the 240-31 core with 14 T RG 303 gives me ~7K at 160, >13K on 80/40, slowly rolling off to >4 K at 28 MHz Still >5 K on 12 . Mel, K6KBE

Hi, I run Linux and I have for decades now. I right click on the rar files and in the popup menu is "extract" and "extract here". Not to start an OS battle but other operating systems may have made it

Don Still curious about the 5k across 10 to 160? Been reading the mail and has been fun but it isn’t obvious to me you get 5k across the whole band? When you get time it might be fun to discuss your