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Sorry but adding a short pigtail will not be an "apples to ranges" comparison. The complex impedance will change when you add a short pigtail to a long feedline but the VSWR change will be minimal.

Instead of using an antenna which does capture ambient fields as your comparison standard, find and use non-reactive resistors as you 'gold standard'. You can also install series/parallel reactive

I assume you are calibrating the nano with the pigtail installed? If not, you are comparing apples with oranges. Unless the load is a pure restive load with no inductive or capacitive components the

John, if you want to get, say, 3000? choking impedance on UHF, broadband, I can only wish you good luck! Because at 3000? at 500MHz is what a 0.1pF stray capacitance has. So forget about winding

I think FairRite makes toroid choke kits that comes with enameled wire and Teflon tubing that slips over it. Not much more expensive than the bare toroid.

700W on 1161? is a current of 0.776A. The impedance magnitude is 1606?, and so the voltage is 1246V RMS, which is 1762V peak. At 1500W it would be about 50% higher. That's what you have at the

Create a repo on github, it's free and others can send changes.

Dave - W?LEV <<Generally, a few clamp-on ferrites of the appropriate material at the feedlint is all you really need. ..ferrites aimed at EMC and RFI control are good for that purpose at VHF/UHF

The document is written in Microsoft Word and printed in PDF with PrimoPDF. No protection is activated. If anyone wants a word document I will gladly send to email but the word document is about 9 MB.

PTFE tubing from AliExpress: https://www.aliexpress.com/item/4000335078529.html $4 for 10m, ID 0.7mm OD 1.3mm will be ~100Ω for a parallel pair.

I found silver coated PTFE insulated stranded wire. It's a bit pricey, but not out of reach. The huge CMC I had decades ago was wound with #12 solid conductor. I had slipped PTFE tubing over it before

$650/for 100ft from Digikey - Alpha 5859/12 WH005 MIL-W-16878/4 Type E $434/100ft for AT121925 WH005 (19/25 strand copper silver coated) you could probably find a less expensive insulation that works

Dennis, it is a USB-C connector. It should be reversible, with semi-circular, rather than sloping, ends to the socket & plug. Most modern mobile phones use these nowadays, since the possibility of

Because of the temperatures involved in the fabrication process solder would melt on plated stranded wire so teflon wire is either available silver plated or bare copper wire. It used to be available

Got my nifty NanoVNA yesterday. The unit works but it will not charge the battery nor will it be recognized by my Win PC. I suspect the USB cable is bad, but it could be the connector on the board.

Hi Bear, Download and read one or more of the several user guides available in the files area of the forum?? Since this is your first time,? read the absolute beginner's guide. Also, since you have

yes there are many versions avalible versions I will do some research I need to update mine as well as I only have 2 traces also.

I finally started learning about this thing and all the videos I've seen so far show four traces. I've only got two. Do I need a firmware update, or what?

Excellent work Martin! Many thanks for your efforts in producing this great reference. 73, Don W5MML ?

I have used the full Adobe Acrobat, Adobe Acrobat Reader and a program called PDF24 to open it. It opens fine with all three for me. Zack