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You are welcome. Since R&S was a partner in this education process, there are additional videos on more basic vna topics. https://www.youtube.com/@Rohde-Schwarz

Thanks a lot Alan for sharing this article. Skimmed through it and bookmarked for detailed reading. 73 Jon, VU2JO [email protected]> wrote:

Same thing happens at the countryside

From Microwave Journal May 2025. An very nice article addressing RF Microwave Design and Measurments at the University of Bristol. A series of You Tube Videos located on the reference page, at the end

I see another person who asks themselves where did I ever find time to work. Retirement while every day "may" seem like Saturday there are days when it feels more like the first day after after a long

finding anything like that in the dumpster. I am envious. I worked with Lab Grade VNA since 1979 and continued until I retired in 2001. I received a nanoVNA for Christmas 2024. having a VNA which fits

Having the 8753C is a privilege of once having worked for HP. As you may know, HP (before Carly - the wicked witch of the west) encouraged dumpster dipping. There were two of these in the dumpster. I

I can't give you numbers of improvement as I didn't record those. But I can give you the order of additions. 1) Lengthened the shield between the ports. It was originally only the width of the main

As promised, I made some rigorous measurements of my home brew fixture for making transmission measurements of various HF circuit elements using a "professional" instrument. I could have used the

If Sysjoint does not listen to customers and provide a firmware solution you have only three choices: live with it, muffle it or cut the beeper circuit.

Dave, the connector is part of the fixture, but since its impedance is 50 ohms, its capacitance does not contribute to the stray fixture capacitance. If you measure an uninstalled connector, you can

Broam, the BNC connectors are part of the fixture and I can not eliminate them. Yesterday, I even questioned my own measurement of 2.7 pF. I need to revisit that today as it was a hurried measurement.

Ohhh, that's too bad. Is there really no software based solution? I really don't like the idea of physically destroying something in a "brand new" (for me) device I just bought. ?

Dave, out of curiosity I created a circuit model for a common-mode choke. It has an inductance, capacitance, and resistance in parallel. I chose the values to mimic attenuation results for a

I have found that all beepers can be permanently silenced with a pair of diagonal cutters. ;-) A less invasive method is to stuff the transducer full with putty, Blue Tac, epoxy or similar physical

Thanks for the info, Dave. Please measure a common-mode choke using the fixture with your HP VNA with S11, S21, S12, and S22 and post the .s2p. I'll see how the Y21 method compares with the usual S21

1) My take on dynamic range is the ratio between the fixture with nothing between the two ports to a fat and short as possible conductor between the ports. With the recent images and using the

And with HP test equipment now KeySight, I dub it KeyOutOfSight. [email protected]> wrote:

One of the definitions for HP is High Price!! *Clyde K. Spencer* [email protected]> wrote:

OK, after looking more carefully at the photos, I think you're referring to the ratio of the desired signal through the device under test to the residual feedthrough with the device absent. Correct me