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Would you have the same for my nanovna-F I don't understand anything in github to treat this myself. -- F1AMM Fran?ois

What one wants to avoid (with some transmitters) is too much reactive component - sure, you can cancel it with a passive component, but that component will have some loss AND the required value

Many collinear arrays are also high-Z. That quoted statement from ARRL is a gross over simplification! Dipoles, Yagis, yes. But there are many common radiating structures that do not offer low-Z to

"Dave W6OQ via groups.io" <david.hostetler@...> wrote: Resonance could be a paralell resonance, as with a full wave dipole, which is high impedance. -- Brian D G3VGZ G8AOE G3T IO94im

Exactly! But not just amateurs, everyone!

Thanks, but still a problem. Wouldn’t download with Chrome, but as advised I used Edge. Initially said it wouldn’t download because of malware risk, but ignored that and downloaded. When clicked

You should be drawing current when the NanoVNA is off if the battery needs charging. The battery has a protection circuit in it to prevent over and undercharge. Perhaps that has failed. You can see it

thank you martin n6qlh [email protected]> wrote:

From ARRL antenna book many editions: Resonance has no effect on antenna performance. The only reason amateurs like to operate an antenna at or NEAR resonance is because the feed point impedance is

Hi Martin, I do not use any Malware protection on my iPads, but a search for iOS Malware should give you options. Larry?AC9OX Sent from Yahoo Mail for iPad

what do you use to scan for malesre in the iphone? i eould like to get a anti virus scanner Martin [email protected]> wrote:

I found a nicely translated datasheet for the 4056 and the temp pin to ground disables temperature monitoring so that's not it. I can't measure anything wrong on the board but it just refuses to

For those who are most concerned about copyright, one of the links has an eBook which available at $120. Not sure whether that money goes to pay for the copy or not. I download to Files on my iPad and

Awesome, that schematic looks correct! Its definitely not the cable, theres no current draw when the switch is off but when the switch is on the USB port draws around 300mA but doesn't charge the

Many times when I am looking for a book I type the title in the search bar and put PDF after it and find what I want. Sometimes there is malware. In that case I run a free program called tron. It has

The -F V2 is a Sysjoint product. Thy have their own version of Saver. Download at this link... https://www.sysjoint.com/en/content/?144.html Roger

https://github.com/hugen79/NanoVNA-H/blob/master/doc/Schematic_NanoVNA-H4_REV4_3.pdf Roger

Some charge cables work and some don't. If you have another cable try it. The cable is likely the issue unless you've used it in the past and it worked with the H4. 73, Cliff, AE5ZA

Does anyone have a link to a schematic diagram for the HW version 4.3_MS of the NanoVNA-H4? My NanoVNA-H4 doesn't charge (no charge light and no current flow) when connected to USB. I looked at the

I'm going mad trying to get Saver to load and run. NanoVNA-F V2 Rev. C Firmware v0.3.0 Build Aug 2021 Windows 10 - up to date. Running as Administrator NanoVNASaver.x64 v0.4.0 I download, extract, run