开云体育

Thanks Stan. I will give that a try. Fred

For early versions of firmware, that display comes up at power-on. My recent firmware version has it in the menu at Config -> Version

One thing to remember is that you can calibrate over a range like 50kHz-50 MHz. You can then sweep a smaller range and as long as what you "calibrated out" isn't too weird, it interpolates. So you can

And we are talking about folding back a *very* short length of wire compared to the total wavelength, not an extreme example of half the wavelength, so, as you yourself admit, for the application I

No, it doesn't. Take the extreme case of having it folded back about half its length. This is a technique used on 40 yagis, because the element length is so long. By folding it back, you roughly

What is the sequence of menu selections to get to the display that talks about version levels, and all the specifics of the nano. I have the Nanovna-H4. Thanks Fred - N4CLA

https://youtu.be/gkmZZbKPlMA

It works fine for insulated wire too, you don't need it to short out. [email protected]> wrote:

--- Clint Sharp <cjaysharp@...> wrote: This works well for bare wire, but not for insulated wire. And if you follow my recommendation of only 12" on each end for 80m, and only 6" on each end for

You don't need to cut any, fold it and cable tie it then you get a second chance if you go too far. If you really want to then you can cut later but 4 years on and my wire antenna is still folded.

For 80m antennas, a foot on each side is a good small pruning adjustment. For 40m antennas, 6" on each side is a good small pruning adjustment. I know this from experience.

I'm not sure how to start a new thread here, but since there are a good number of followers here, I'll try this. Starting with a new inverted V for 40 M, I cut each side to about a foot and a half

Great Mike. Can you share that video source? Doug, VA3DKA -- This email has been checked for viruses by Avast antivirus software. www.avast.com

Of all the stupid things. NONE of the videos showed calibration on the end of the feed. They all did it right at the side of the vna! I finally happened on a video that did it at the end of the coax n

I thought that when you do cal, you disconnect the antenna and do cal at the end of the feed line. Which way is correct? Chris Sent from Mail for Windows Sent: Monday, June 12, 2023 2:14 PM To:

Hi Mike. I have been following your questions and can sympathize with your dilemma re calibrating and configuring your NanoVNA. I struggled with this aspect too, until I found this YouTube video,

Ok sorry to be such a pain. I really want to get this up and rolling for field day and some demonstrations coming up and I feel like a idiot for not catching on. Thanks for being so patient with me.

Mike, Just set the start and stop frequencies to the widest approximate frequency range where you expect the antenna will be tuned to. For 10M try 25 to 32 MHz. The calibrate for this range. Set the

Ok Roger, ? I watched the video but didn't glean a lot of learning from it. I'm not understanding were he is reading his freq from ? ? At the moment I'm trying to set the coil in the center

Don, You can learn how to update your firmware in the Absolute Beginners Guide located in the Files section of this group.