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Why the big concern over the cal standards supplied with the NANOs? To 1.5 GHz, I have compared those to (expensive) HP cal standards using the 8753C and found good agreement. Above 1 GHz, your

jmr, Manfred and I have both posted jigs that can be easily built and operated with software that is available

I had another play this afternoon and it appears the latest FW doesn't support the edelay command in the same way as the older FW. Therefore, I can't calibrate the nanoVNA to the same level of

This may have been stated in slightly different terms, but: The circuit Q is the culprit. Lower Q results in dragging the resonant frequency lower. Maybe get yourself some LN2 and immerse the parallel

Here's a quick preview. This is a repeat of the ESR test of the 1111 560pF cap + 0.333R series resistor. Also included is an attempt to measure the raw ESR of the 1111 560pF cap and the datasheet

I managed to find Dislord's 1.0.50 firmware for the H. It was posted up onto this user group in the files section. I had previously been looking on Dislord's github page without success. The good news

He already gave this info, below:?? Micro-Cap 12 Google it - it's free windows s/w

Please read the Console Command document in the forum files section - it has all the commands. Also, use the Nanovna-App application - it has a clock set command in setup. Search the forum messages

Hello Simen, Please let me know the name of the simulation software that you are use. Thanks in advance. Mark Wilkinson ________________________________ Sent: Friday, March 26, 2021 7:52 AM To:

Many simulators apply default series R to L and perhaps C to prevent creating a singularity matrix. In some cases you can over ride the default.

Hello i install to a Xtal and now i can see the clock is running in to menu version...but how i can set the hour and date? A sexta, 26/03/2021, 13:35, Mario Vano <mvano@...> escreveu:

If you write the node equations for a parallel LC with an R in series with the L wo= 1/√LC × √1-R^2 × C/L Yes, the series R will perturb the resonance point from the expected value.

Thanks, interesting! How is that computed? But the result however, is the same with Serial Resistance = 0 Ohm in capacitor and in coil; Except I get beats on top of the 888630 Hz waves, probably

I got my crystal from a cheap clock in my junk box that had died from mechanical problems - the crystal worked great! M

root (LC) is only true if R=0 If any R is present either in series with L or C, The root (LC) is modified... downward in freq...

Simulations show Currents do NOT cancel at the Parallel LC-resonance frequency, contrary to what we learn is one of the main characteristics of parallel resonance circuits. Why? Testing various LC

Larry, Thanks for the info on how to use the SD card. I have not used the time command yet as thought I should install the crystal first. Ken, NU4I Sent from my iPod

The 32KHz xtal is only needed if you want a real time of day clock on your unit for accurate dates on data saved to the SD card.? Without the xtal, you'll need to turn on the Nano, set the time using

So does mine but it still was a clone, nothing major, few resistors where there should be none and some wrong component values. Only way to be sure is to buy from Hugen store.

I bought my H4 several weeks ago and it did include the microSD card holder attached to the PCB. However, the case did not have a slot cut in it for access. I'll do that myself if I decide to use it.