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Thanks for the reply, Vladimir. Yes, I was able to fumble my way around and did in fact find that at the time of writing my first note I didn't have the firmware installed right. I was able to get

For measuring larger components below 60 MHz I use a couple of other jigs which work quite well. The first one is built with off-the-shelf cables and a BNC to banana jack adapter. I built a version in

yeah, but the "shortening for resonance" exists even if there is no "end insulator" (example is a rigid rod). Schelkunoff is talking about a *model* for the wire antenna that would be simple to

Hi, Jim, Schelkunoff and Friis define "end effect" as being due to the non-zero current flow into the capacitance of the end cap of a finite radius conductor (Section 8.23).? The ARRL Antenna Books

Hello Hugen, DiSlord and others, First: I know that this is a user and not developer forum. So please apologize for getting deeply into the code (for anyone not directly involoved). This is my first

I've been reading some past posts, interested in measuring small components. I've come across two jigs, Roger's, and Manfred's. I'm wondering what the advantages and disadvantages are of each. Looking

Photo - NanoVNA-H, pcb version 3.4 left - VDD and BOOT0

Hello Andy, have You Driver for NanoVNA installed? If Yes, see this photo : /g/nanovna-users/photo/0/34671.23266.0?p=Created,,,20,2,180,0 please short VDD+BOOT0 and turn on NanoVNA

Good Morning to the group, I have an old VNA, I think it's what is called an H. I'm not sure if it's an original or a clone either. If possible I would like to take advantage of some of the semi newer

On 9/6/21 1:31 AM, Dirk via groups.io wrote: > Getting this code after running the executable file: > > % /Users/vudo/Downloads/nanovna-saver ; exit; > Traceback (most recent call last): > File

Getting this code after running the executable file: % /Users/vudo/Downloads/nanovna-saver ; exit; Traceback (most recent call last): File "nanovna-saver.py", line 21, in <module> File

When replacing a screen on my tablet, the instructions said that using a heat gun would soften that double-sided adhesive and make it so you could carefully separate it.

Joe, I believe you are building the pi network for an RF amplifier. Once you have measured and installed the coil and capacitors in the RF Amplifier you can tweak the settings to compensate for stray

Thanks all I was doing it right. This group is awesome! Joe

It all depends... If the capacitor is a small value lead length has a considerable effect on the measurement. See graph below of a ceramic cap marked as 10 pF. Measuring caps was discussed in the link

I measured capacitors exactly the same way as inductors: S11 (reflection) with one side of CH0 attached to one end and the other side to the other end. I even found C values more stable as frequency

An extensive discussion of measurement methods, pitfalls and how to test capacitors and inductors in a previous post last February. /g/nanovna-users/topic/80744049#20809 Also see how

I have down right now how to accurately measure a coils inductance. Now what is the most accurate way to measure a capacitor? Joe

If you use a wallpaper scraper or maybe a “bluntish” Stanley knife to gently prise the old screen up, you should not damage components on the other side of the board. Before finally committing to

Larry: Todah Rabah. May you and all our colleagues have a sweet and healthy year! 73 Ray From the home of Prof. Emeritus Raymond (Reuven) Boxman School of Electrical Engineering Tel Aviv University