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I removed my connector because of factory error, solder bridge, that shorted the 5V supply.? I would love to put it back but it's too difficult.? I may retrofit a different connector. I just don't

So am I. ))) But what is the problem to display an additional line with R+/-jX as on NanoVNA-Q screen on the screenshot below. Maybe because of memory limit?

Putting a USB-C to USB-mini adaptor would only extend a stiff level arm to the connector making it more likely to put more stress on USB C socket. If it is still working and you want to improve

Sorry for off topic, but why there is no abbility to edit messages in this group as in the others? It's a great inconvenience. (((

I very much appreciate being able to select my 10kHz - 1 MHz stimulus calibration and e.g. check components or capacitance of short cables on the Smith chart display

I much prefer the +/-j ! ! ! ! But, the HP 8753C displays both. I still prefer to know where I am on the Smith Chart. Dave - W?LEV -- *Dave - W?LEV* *Just Let Darwin Work* *Just Think*

Approved.

Herb, please explain the advantage of using the pF and nF format. When I am trying to calculate LC-match, for instance in MMANA-GAL, I need to use R+/-jX format. See screenshot. That's why I prefer

Dear gin&pez, Thank you -- I'm glad to learn that the article inspired you to repair your HP 8505A. Best regards, - Jeff, k6jca

Dear Jeff, Thank you, very much indeed, for this; we much appreciate it! Well, we will try sometime to reproduce your MatLab code in Maxima. By the way, allow us, please, to publicly express our

I play with RF as a hobby, but seeing something like 50ohms +22uF looks quite odd, whatever the frequency is. It is like there is large capacitor somewhere, when there isn't of course..

Instead of the wrong: G = S(L-O)(gs+lo) + L(O-S)(gl+os) + O(S-L)(go+sl) / / [ (L-O)(gs+lo) + (O-S)(gl+os) + (S-L)(go+sl) ] the correct one: G = [ S(L-O)(gs+lo) + L(O-S)(gl+os) + O(S-L)(go+sl) ] / / [

On Wed, Jan 22, 2020 at 05:33 AM, Merle W wrote: " I also have the c connector issue. Had to remove some plastic." "Tried your firmware issue and my unit hangs as well. The center freq did show up

For clarification, I will note that the standard VNA error-correction equations reduce down to this same equation (that I've quoted, above) if we assume the reflection coefficients of the Short, Load,

BTW, for those who are into modding their NanoVNA - you can also make your original unit go into DFU mode the same way as the new H4 model: - Add a jumper wire from the BOOT0 pin on the CPU over to

Herb, Thanks for the reply, then? it starts up with a black screen then, but when you connect it to the PC? you hear the wellknown sound and DFUse recognises it correctly. I had no need to use DFU,

Herb, Very nice report. I also have the c connector issue. Had to remove some plastic. Tried your firmware issue and my unit hangs as well. The center freq did show up correctly though. Merle

The DFU mode is entered by turning OFF the unit, pressing in and holding the selector switch and then turning the unit ON.Then release the switch.

Why ofcourse Herb ? DFU mode is replaced by "Brightness" and I remember to have seen DFU mode passing by, but can't find it back now, please how to entyer DFU mode, I tried a long press? af the

Hi Bob thanks for pointing this out. It's not a bug... https://www.riverbankcomputing.com/static/Docs/PyQt5/installation.html "Wheels are the standard Python packaging format for pure Python or binary