Dumb question: What are REAL, IMAG, and PHASE good for?
#general_vna
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.
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Robert Stone
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#11606
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Re: Ceramic filter measurement
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
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David Platt
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#11605
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Re: Ceramic filter measurement
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
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David Platt
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#11604
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Re: Analysing Input Impedance Matching Circuit for the NE602
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
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Kerr Smith
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#11603
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Re: Analysing Input Impedance Matching Circuit for the NE602
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
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Erik Kaashoek
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#11602
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Re: Analysing Input Impedance Matching Circuit for the NE602
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
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aparent1/kb1gmx <kb1gmx@...>
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#11601
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Re: 70 MHz - 6 GHz spectrum analyser & tracking generator
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
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jafinch78 .
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#11600
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Re: 70 MHz - 6 GHz spectrum analyser & tracking generator
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:
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Erik Kaashoek
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#11599
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Re: 70 MHz - 6 GHz spectrum analyser & tracking generator
I'm also interested in that for Hack RF Jos Peter Loron schreef op 8-3-2020 18:57:
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Jos Stevens
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#11598
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Re: please remove at this time.
Is this the Ron Boyk that I know and have worked with in the past? *Clyde K. Spencer*
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Clyde Spencer
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#11597
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please remove at this time.
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n5qvrb@...
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#11596
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Re: 70 MHz - 6 GHz spectrum analyser & tracking generator
Very interesting! Any idea if there is something similar for the Hack RF One? It has a similar TX/RX range¡ -Pete
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Peter Loron <peterloron@...>
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#11595
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ON7DQ_NanoVNA_Presentation_English
Hello, May I suggest to publish the presentation in Power Point format? This will allow more easy translations to other languages. I mention Power Point because I think that it is the original format.
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EB4APL
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#11594
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Re: Basics to look at when buying nanovna
Sorry, I'm a little late, but no, I cannot personally confirm it. The friend who got one is very impressed with it, but is a thousand miles away, so I can't examine it. The seller is a very large
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DougVL
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#11593
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Re: 70 MHz - 6 GHz spectrum analyser & tracking generator
The AirSpy R1 and R1 also enable a spiff spectrum analyzer that covers roughly 20 MHz through 1.8 GHz. The necessary SW, SpectrumSpy, comes free as a part of the SDR# download. It will do as little as
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W0LEV
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#11592
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Re: NanoVNA-H4 Download Mode
Figured it out -- download mode requires a simultaneous downward press of the jog wheel while powering on. After that, flashing the new firmware was easy. Paul, W9AC
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Paul Christensen
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#11591
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NanoVNA-H4 Download Mode
I recently purchased a nanoVNA-H4 model from R&L Electronics. I am attempting to place the VNA in download mode to flash new firmware. The Config menu shows no such "DFU" option. As such, I'm assuming
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Paul Christensen
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#11590
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Re: Analysing Input Impedance Matching Circuit for the NE602
Would a 50 ohm pad between the VNA and the input (50 ohm) to the transformer?
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Lionel Booth <N5LB@...>
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#11589
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Analysing Input Impedance Matching Circuit for the NE602
I am currently designing a receiver for the 40 meter band and will be using an NE602 for my mixer. I have most of the individual circuits built (pre-amp, bandpass filter, crystal filter etc) and they
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Kerr Smith
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#11588
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70 MHz - 6 GHz spectrum analyser & tracking generator
For those of you with an ADALM Pluto SDR, here's a 70 MHz - 6 GHz spectrum analyser & tracking generator: http://www.albfer.com/en/2020/02/21/satsagen-2/ Looks very interesting. Anyone played with
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David J Taylor
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#11586
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