开云体育

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

All, these sources of “free books” most likely contain some current copyrighted material and despite a USA string in the URL are more likely Chinese or other offshore based entities. Just know

A lot of good discussion here, but I would like to answer the original question from Diane BONKOUNGOU: In my opinion you are not ready to match the antenna. You should bring the antenna to resonance

Hi, Jerry, You're right that the lowest SWR may not occur at resonance, whichever definition of resonance you use. For a particular combination of antenna and transmission line, 1:1 may not be

Maynard, True in this particular case. I was just trying to simplify matters. I guess I didn't do so well. My point is that the lowest SWR is NOT necessarily the resonant point. In fact, very few

VSWR is measured in voltage but the cause is the difference in impedance (if there is one) between two items - in this case the feedline and the antenna.

First of all, there is no SWR of 1:2. SWR is always X:1. And a 50 ohm cable feeding a 50 ohm load is by definition an SWR of 1:1.

For those that don't like strange download sites, the book is now on archive.org Give the page a couple of hours to populate all the options. The pdf is available now, in browser read later.

One remark regarding the -H versions: If you look at Hugen's schematics, you will see that R5 has the same value of 1 kOhm as for the -H4 version. Therefore Larry's modification can be simplified. No

I have a collection of maybe a dozen Smith Chart variations that I keep as masters to make copies/scans as needed. 73, Don N2VGU

One alternative that I use is the software, 3D Smith Chart: 3dsmithchart.com. Inexpensive. No color crayons necessary, ? Frank K4FMH