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The following photos have been uploaded to the Pickup coil ( /g/nanovna-users/album?id=287692 ) album of the [email protected] group. * CAM01346r.jpg (

Hi, I still keep a true GDO but I had nor used it for a long time. When I built my Poor Ham Scalar Network Analyzer some years ago, I also built a pickup coil wound in an old 35 mm film canister with

The following photos have been uploaded to the Pickup coil ( /g/nanovna-users/album?id=287692 ) album of the [email protected] group. * Pickup coil.jpg (

EB4APL <eb4apl@...> added the album Pickup coil ( /g/nanovna-users/album?id=287692 ) : A coil for using the nanoVNA as a GDO.

Hi Robert, I have tried several times to send a message to cqxiegu, but I never got an answer. I can't understand how a company like Xiegu can not respond to customer inquiries. Other hams have

Hi Pedro This is the biggest screen I have seen so far:

Everitt and Anner, "Communication Engineering," Third Edition, McGraw-Hill, 1956, provide a general method (pages 330-331) for examining a mismatch between a source and load, such as a transmission

nanovna v2plus4, lite vna64, nanovna h4, nanovna -F V2, etc etc there are a handful of vna and vna v2 with 4 inch or 4.3 inch screens i recommend to use one of the newer v2 models that go up to 3 or

Pedro, There are several, but the "LiteVNA 64" has coverage up to 6 GHz and gets good reviews and comments here. https://eleshop.eu/litevna-5341.html If 2 GHz is enough try the NanoVNA H4

Problem solved, TLW3 works ok. Robert

Pedro, most probably it was an nanoVNA-H4 (/g/nanovna-users/wiki#NanoVNA-H4) There are other possibilities, but they are more expensive. HTH, 73, Stay Safe, Robin, G8DQX

Hello to all Recently I saw a nanoVNA somewhere with a bigger screen than the normal 3 inches. Can someone tell me the model please? Thanks in advance 73 Pedro Madeira CT7AHV/C91AHV

Ah, the old days! It's been 50 years since I've used a GDO (when G = grid!). I'll give that a go, thanks. -- Mike

With a 110 uH coil it takes 4.2 pF to resonate at 7.4 MHz. and 1.4 pF to resonate at 12.9 MHz. That is a difference of 2.8 pF which is not much. One way to get to the bottom of this is to short the

My batch file is for 64 bit systems only. Try manually copying TeeChart5.ocx to C:\WINDOWS\system32 Then run TLW3.exe Roger

Hello Roger, I have a PC with Windows 7 Pro SP1 32bit (German). C:\windows\SysWOW64 does not exist on my OS, and your batch file reports an error. On my 2 other Win10 64bit PCs TLW3 works ok after

What I wanted to do is not working. I have an Excel sheet that allows me from the S11 of an antenna to determine its L and C near the resonance by pressing the curve of a plug to pass through two

Hi Fran?ois Here is the .s1p file for a range of 1 to 20MHz. -- Mike G8GYW

Roger I compared both methods of calibration, which I refer to as "screws" and "crocs". At around 72kHz, where the reactance is approximately 50R, both calibration methods give an inductance of 108uH.

That is a very old version of NanoVNA Saver, download the latest version and try again.