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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

On Wed, Jan 22, 2020 at 12:17 AM, Oristo wrote: " You may be able to capture screens by modifying https://oristopo.github.io/nVhelp/html/screenV.py Specifically, replace 320 and 240 at lines 46 and 73

On Wed, Jan 22, 2020 at 11:37 AM, Jim Allyn - N7JA wrote: , "You know how you can tell who the pioneers are?? They're the ones > with the arrows in their backs." > I agree that the best is the enemy

I'm in no rush to mod mine.? It seems to work fairly well, so I'm going to wait until others have tried the various mods and figured out what works and what doesn't.? Years ago, an employer of mine

Hi Herb - You may be able to capture screens by modifying https://oristopo.github.io/nVhelp/html/screenV.py Specifically, replace 320 and 240 at lines 46 and 73 with pixel dimensions of NanoVNA-H4

" I always assume operator error before submitting a software issue." More importantly, just one measurement is not a measurement. My ePacket has already moved on, I hope to get here next week. 73,

Herb, Excellent report. Thanks for taking the time to write this up... Roger

Thank you Erik. I have ordered the original and yours 1% resistors. Now waiting... :-) 73!

Use the original. I only used other values because I did not have the original -- NanoVNA Wiki: /g/nanovna-users/wiki/home NanoVNA Files: /g/nanovna-users/files Erik,

A number of members have annouced the arrival of their 4" NanoVNA-H4. Mine came in today. I ordered the NanoVNA-H4 ($60usd) from hugen's Alibaba store plus $15 DHL express shipping. It arrived in a

Hello, dear friends! I have a dilemma, which one of the CH1 modifications to apply? :) The original, as on rev.3.4.1 schematic. R22, R23=51Ohm, R24=91 Ohm, R25=11 Ohm. Or suggested by Erik PD0EK. R22,

One more work-around for 32-bit Ubuntu (or Lubuntu, etc) version 18.04. I found that the only incompatibility for using Python 3.6 (not requiring 3.7) seems to be the nanoVNA-saver file, SITools.py,