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Hi Roger I just test it by my H4 + V 1.2.40 and reference load change on Calibration submenu can take any time we want after or before calibration , so no care about when it's done , great facility

Hi Roger I appreciate a lot your simple accuracy improvement methode for who are interested , knowing that having a good accurate SMA 50 Ohm load will cost much more then all NanoVNA's prices in the

Hi Roger Thanks for your methode clarification, using external good multimetre to measure on DC mode the refrence load value , i am agree also with Dave that simple DC resistor measurement by a

Roger Need: Sorry if I stomped on your toes. PLEASE continue reading. What you don't know is I am also a professional EMC/RFI engineer with a lot of time spent in RF/uW design and test and

I'll go with Dave, horseshoes, hand grenades, and nuclear bombs, close IS good enough for these devices AND our devices. AMEN Mike C. Sand Mtn GA

Dave, You are making a blanket statement when you say we are all "amateurs" here or talk about "amateur radio" work. This is NOT an amateur radio group. There are many of us in the group that are

Again, remember, we are "amateurs". We do not run a metrology lab (well, maybe one or two of us might?). 50.86-ohms DC resistance is plenty good enough. And consider the accuracy of the DMM with

The ability to enter the value of the load resistance is only used to increase the accuracy of calibration. Small deviations from 50 ohms can then be compensated for. The cal load supplied with my

Hi Roger , we can measure the real coaxial caracteristic impedance by DiSlord coax function with more accuracy then the commercial announced value for our specific portion of cable to be used

I updated from 1.2.20 to 1.2.40 and was pleasantly surprised. The "Enhanced Mode" for S21 and the ability to measure your 50 ohm load and then enter the load resistance increases the accuracy which

I have an SSA-2N and find it as easy to use as any of the NANOVNAs or my professional spectrum analyzers. The basics are the same. I much prefer the SAA-2N for its metal case and the

Once you learn the basics of operating a spectrum analyzer, there is no need for "individual" instructions for each unit. The basics are pretty much identical. Dave - W?LEV [email protected]>

Once you learn the basics of using a spectrum analyzer, you should be able to operate any brand, make, size, shape, language, supplier, and......... Dave - W?LEV [email protected]> wrote: --

Screwed up the title. It pays to read before posting.

Are there operating instructions for this VNA? The way it display data is different compared to my earlier and much smaller Nanovna. Dave

Thanks for the clarification Roger. My H4 is still on the older firmware it shipped with so I’m reading through these messages to decide if and when I should upgrade. DiSlord has done a great job

Hi Thank you Roger for all your explanation, So the 1.2.40 finally is doing the correct job as its wanted to do, but not what i expected, so i just need to consider that reference impedance change

I downloaded and used 1.2.40 today with the reference impedance change feature (Port Z under display). It works OK. The newer beta version (not publicly released) fixes some other issues. DiSlord

Nizar, In my other post I mentioned that the NanoVNA measures the actual impedance and gave several screenshots that were S1

I’m confused - does firmware version 1.2.40 display this properly or was this corrected in the new beta version Roger mentioned? Tony [email protected]> wrote: