Kapanadze and other FE discussion

[stivep]

So I can go the lowest to 10kHz with measurement of:
- my Tesla  coil resonances.
-any resonance circuit
My VNA or NA are   not the newest one but real goodies.

What I must compromise:
-everything below 10kHz.
For that I use 4194A. that is ~30 years old unit, and nothing can be better in this price range.
   But..
             4194A is not VNA

So what is  the solution:
Here is quite tempting option:
https://www.advantest.com/web/advantest/products/electronic-measuring-instruments/r3755a-r3760
The R3755A network analyzer
_{Note: do not look at the R3760 network analyzer,}

Where to buy:
https://www.ebay.com/itm/ADVANTEST-NETWORK-ANALYZER-CARD-R3755A/131555851726?epid=1225141993&hash=item1ea156fdce:g:KoUAAOxy4fVTAFNM
they have 4 of them.
But shop around before you buy.


6. software source:
https://www.advantest.com/web/advantest/products/electronic-measuring-instruments/r3755a-r3760
  on that page  click on button application
  go down  of the page to Firmware and read if the software is right for you. 

<sub>This is nice modern tool( ~2012) made by  reputable manufacturer
                   but again starts from 10kHz..... to 300MHz
                   so after you buy it and it works  you can't go lower than 10kHz

https://youtu.be/yNs2wc8nRJw?t=352</sub>
Wesley

[stivep]

related to  previous post
Wesley

[mkjekyll]

Wesley,

Also can one use a frequency divider in order to go below the 10kHz or do we get too much impedance loading with low frequencies for such a solution to be practical?

I think there are multipliers to go the other way but likely one has to give up something to get like SNR or dynamic range...

[lancaIV]

Not generation but wireless charging,  over kilometers :
https://thetechranch.com/global-energy-transmission-provides-ultimate-solution-for-infinite-drone-flight/

[stivep]

lancaIV
This thing is 70 years old concept.https://www.youtube.com/watch?time_continue=4&v=A58auF2dhCQ

Wesley