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Greetings All,

I would like to thank the authors of the subject document which IMHO clearly describes how to get started with the nanoVNA - it is a very helpful document!

I think I noticed a minor typo in ~Note 6~ which is as follows:

"Note 6:
Connect the two equal length Male-to-Male coaxial cables to CH0 and CH1 of the NanoVNA
with the Female-Female SMA connected to the free end of the cable connected to CH1. Dress
these cables away from the NanoVNA in a parallel line and do not let them cross."

I believe the intent was to state that the Female-Female SMA should be connected to the free end of the cable connected to CH0 not CH1 as stated.

The authors may wish to make a correction if appropriate.

Thanks again for this helpful document!

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Best Regards,
Tom, VA7TA

Hi Tom,

I should probably get the document out in front of me and minimize the risk of trying to fix my errors. However, let me see if I can address any misunderstanding from your email message. The CAL feature we were trying to address in this portion of the procedure is to achieve the best port to port isolation as well achieve the corrected insertion loss of the test set. So there are a set of 50 ohm cables connected to CH0 and CH1 and we have in hand the SMA adapter, a bullet, a female-to-female adapter, that will be used to join the 2- cables together. We then do a THRU CAL. I suppose our wording may be confusing... stating CH1 instead of CH0. I can revisit. We also need to update the document to call out what terminations are what... That is to say, the SHORT, OPEN and LOAD, p/o the kit are not labeled. Most folks got it, but many did not!

Thanks for the feedback on the document. Suggestions are very welcome.

Alan Victor

Greetings Alan,

Thanks partially to the tips I got from your documentation I understand the calibration procedure quite well now. It is just that the next step in the procedure following "Note 6" that involves the CH0 cable (Note 11) is to install the OPEN male connector on CH0. This requires the female-to-female barrel to be connected to CH0 not CH1. The connection of a barrel connector to CH1 is mentioned later in "Note 13" for the LOAD test which infers it does not already have the barrel connector installed as requested in "Note 6". It just appears that it is just a simple typo in Note 6 that should state CH0 instead of CH1.

I hope this info is helpful and thanks again for the great documentation effort!
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73
Tom
VA7TA

AGREE!

I just re read this and pictured myself doing the process. Oooops, Yes, dummy, we need to move the SMA adapter over to the cable connected to CH0. Otherwise, were dead in the water!

Ok, I will get this fixed and update the REV number.

Thanks again!

Alan

Hi Alan,

It was just a minor typo that did not deter the overall helpful support provided by your documentation.

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Many Thanks!

Tom
VA7TA