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Thanks for the book page image - this is essentially what I have currently breadboarded up although my toroids are wound for 1.5k rather than 3k. I am going to try removing a turn off the primary side

Kerr, Wes Hayward (W7ZOI) did some tests on the NE602 (lower temp range than SA602) and published them in his book Experimental Methods in RF Design. The balance input configuration will give you

ground loop or pcb residual capacitance?

I put it online in pdf because that can be read/viewed by anyone. The pptx format is not compatible with e.g. OpenOffice, and the file is also quite large. If you want the original pptx file, no

...maybe. Since last I posted, I've experimented with a variety of possibilities; none of which worked...8^( But, I reverted back to a message where I mentioned building a filter with half of the

On Mon, Mar 9, 2020 at 07:31 AM, <mcebokli@...> wrote: "... I have the cables and standards from the old one, so no problem there."

This is great, just what I wanted: the same device, but with wider frequency and dynamic ranges. I love the smallness of it, same display as before is OK for me. I have the cables and standards from

I have been reading a bit more about these matching networks and have found another one I think I will try as well. https://www.ece.ucsb.edu/Faculty/rodwell/Classes/ece218b/notes/Resonators.pdf

Resistance (REAL) is a value (at al freqs) and can be plotted on an XY graph on the horizontal axe IMAG is an? reactance value? (L or C) at a specific frequency and can be plotted on an XY graph on

From: jafinch78 . Looks like Signals Everywhere did an overview of mods in his "Adalm Pluto SDR Tutorial: 70Mhz to 6Ghz and Dual Core CPU Modification": https://www.youtube.com/watch?v=5V6CxTBDHVY

My recommendation: For any ham newby in rf calculating, who is seriously willing to learn, or who simply wants to optimize his antennas (by using his NanoVNA, or not) the fastest and (to my knowledge)

Good questions; unfortunately the answers can get involved. Yes, real and imaginary are resistance and reactance.? Usually in Ohms.? Reactance is Z sin(phase angle) and resistance is Z cos(phase

So I'm a ham and I usually just use the NanoVNA for analyzing "1 port networks" otherwise known as antennas. But I do try to learn other stuff, and I ran into something that doesn't make sense to me.

Interesting... this new jig seems to be working better than I had thought. I just swept all four of the filters I have. The filter I had chosen for my first test, turns to be the one with the greatest

So, here's Junkbox Jig #2. I took a different approach with this one. Instead of using an L-match, I dug through my junkbox and found a bag of little ferrite-toroid transformers which have a 2:1

Thank you very much for the information - it was just what I was looking for. I will directly connect the NanoVNA to my input circuit to see how it looks now I know that I will not damage the IC by

Please be aware the stated input impedance is per input so if you use the NE602 in balanced input mode (and you should) it's twice the resistance and half the capacity. The impedance is fairly stable

The input of the 602 can take more RF but the output circuits are in overload. That would make gain compression if you were doing S21, for S11 it should be fine. The problem is there is a level where

Looks like Signals Everywhere did an overview of mods in his "Adalm Pluto SDR Tutorial: 70Mhz to 6Ghz and Dual Core CPU Modification": https://www.youtube.com/watch?v=5V6CxTBDHVY Looks like he has

Hack RF is single duplex so no tracking generator and no SNA There is a SA application for the Hack RF. -- NanoVNA Wiki: /g/nanovna-users/wiki/home NanoVNA Files: