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To measure the total inductance, or more importantly, the +jX of the windings: Short both conductors together at both ends so the choke forming a single conductor consisting of two paralleled

Dental floss is a good way to cut through the adhesive, and it doesn't stress the LCD. Ed - n5kzw

Martin: Re: If you wish to examine the common mode impedance of chokes like this, connect the VNA across the windings between both wires of the Balun connected together at the input and output of the

Excellent work, Martin. As a first work on this and in a second language to you, you did very well. Helpful advice: You should expand the section on flashing firmware as this is an area that scares

Martin, odli?an posao, hvala. (Great job, thank you) YU7NS Milan

Hi Andrea, I have an hp workstation that runs a filter design routine, but ELSIE, is an excellent source for the same tool. Try it. Alan

HI Martin, great work! for beginners but also for all the other users. Many thanks 73 de Gabriele. I4JXE Inviato dal mio telefono Huawei -------- Messaggio originale -------- Da: "Martin J.K."

Excellent English, Martin... well done for an extremely useful document. I've only skimmed through it quickly, and the only thing that jumped out at me was misspelling Stimulus? on page 26. Many

The #14 wire and the large cores which I use address the requirement of operating at full power of 1.5 kW. Not that I use that much, but on occasion on 75 and 160, it is required. There's no doubt

Martin J.K. added folder */Absolute Beginner Guide to The NanoVNA* --- The following files have been uploaded to the Files area of the [email protected] group. * /Absolute Beginner Guide to The

I have uploaded file in files section of this group: Absolute Beginner's Guide to The NanoVNA. Comments are welcomed here or to my email: 9a2jk _at_ hamradio.hr As English is not my native language

Yes, many use 31 material for this purpose. I've wound many like CM chokes using red cores, 31, and 43 material. Problem is with the higher ?r materials, I end up with a virtual tesla coil at the

"The impedance of a helical antenna is about 140 ohms. To match that to 50 ohms, you can use a quarter wave of transmission line of sqrt(50 * 140) = 84 Ohms." Dr. Kirby, I'm trying to get my head

ps.: select: ST7796 touch -- *** If you are not part of the solution, then you are the problem. ( http://ha3hz.hu/ ) ***

Hi Jos, read this message: /g/nanovna-users/message/16521 -- *** If you are not part of the solution, then you are the problem. ( http://ha3hz.hu/ ) ***

I have excellent results operating NanoVNASaver remotely via VNC from my iPad (and iPhone for that matter). I have not tried it with my Android pad, but since I use VNC clients from the same

Part of the problem could be that you seem to be using a Red type 2 low permeability iron powder core. This will not provide a high enough value of choking impedance for the purpose you wish to use it

Dave, Thank you for those clear photo's and measurements. From the Smith charts I think we me conclude that the windings (forming a 2 wire transmissionline) have a Z0 of about 100 ohms. The enameled

Dave, I had some 18awg coated solid copper wire i stripped form a piece of thermostat wire and managed to get 16 loops onto the core. I am 3d printing a centre insulator for the two wires form the

Bob, I do understand the antenna is low to the ground to go any higher i only have one option and that is to slope the wire from the 2nd floor of house so around 25 to 30 feet down to the back fence