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I don't understand you Peter, the 8753 is a network analyzer, which will give you S11 the reflection coefficient. The log of its magnitude will be the return loss. It should be able to convert your

Are the newer model VNA's going to have updated firmware?? Hal/WB4AEG

If you can tell me a simple way to set up to measure return loss I can do that for the various loads. I can do the smith chart but it is very hard to see in a photo as the loads are all just tiny dots

Very well. Thanks! ________________________________ Sent: Wednesday, August 7, 2019 2:21 PM To: [email protected] <[email protected]> Subject: Re: [nanovna-users] August firmware release

Alan, All I did was to do a Google translate on hugen's release note. You really need to read through >all< of the various posts from the few folks who tried to compile their own firmware builds and

Hi Larry, Is there a single document outside of the firmware that describes what this update is all about? Such as errors or bug fixes, added features, etc... Thanks, Alan

There are several features missing in current version: * Two permanent markers. There is only one marker displayed when hovering with mouse over graph. Not so easy to make a screen shot and still

I translated and placed a copy of hugen's August 2nd firmware release notes in the Files section. The latest '20190802' releases are here:

For every upgrade you need to calibrate it. Before any calibration, you need to reset the calibration data. Once saving the calibration to position 0 (zero) it will always load that calibration data.

Got it. Thanks. The 800 MHz ch now shows going to 800 MHz. It has another issue though. Spikes are all over and go all the way to the top of the screen when no load is attached. Looks OK with 50 Ohm

That is expected Peter. Have you got the imaginary parts or phases? Best to plot on a Smith chart too and see how your samples rotate from low to high frequency.? 1.02 swr corresponds to about 40dB

Hi, Please check here: https://drive.google.com/drive/folders/1IRz6E1wlkRyV0u7sbqj0lhWST-GV1szY [image: image.png]

Hi Jim I think we're all struggling to identify and track the different versions of the firmware. I suspect they're all ones written by Hugen who wrote them for the version he sells at

Very interesting results Peter. It prompted me to check out the various dummy loads I have with my multimeter. The decent ones with N type connectors came out at 50 ohms +/- 0.2 ohms, which might

Hi SPACE OPQA, Thanks for the info. Where is the August Version? Thanks, Jim K.

Hi Mike, Thanks very much for that information. The 800 MHz aa version of the firmware corrected the problem. The 800 MHz ch version did not. In fact the 880 MHz ch version still goes out to 900 MHz.

Resending from website as it didn't seem to go through as a message. Also my pasted table from Excel lost formatting so I tried to fix it to be more readable. I just did some very simple resistance

I just did some very simple resistance and SWR measurements using a HP 8753ES and 85046A. I did a very basic one port 3 point cal using a Anritsu OSL which is specified to over 3 GHz. I took

Bob, In case you need to enter the frequency manually, select stimulus as stated, then after you select what you want (start, stop, centre, etc) and the Freq appears across the bottom of the

Hi Jim The 800MHz versions of the firmware are the ones that avoid glitches at 300 and/or 600MHz. The design seems to be based on pushing chips beyind spec and using harmonics of the oscillator signal