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Thanks, Larry, that's a nicely written guide.? I didn't know of it and used the nanovna.com web page and some of Alan w2aew's well made videos.? I use RF test equipment nearly daily as part of my

Mike, The Config menu has a system reset (Clear config) in the Expert Settings.? You might want to try that then go through the cal process again.? If this is the first time you're using a Nanovna,

You cannot just put an arbitrarily-large attenuation after a VNA port and expect reasonable results. Roger Need's suggestion of 20dB is about as high as I would go; keep in mind that the round-trip

Hello... a suggestion, given the number of active users, could you provide a suggested donation amount...? Thanks... -- 73, Greg KC9ZEW

Thanks, Larry.? I did go through the steps you described.? (You can even see in the screenshot from before that I had recalled settings 6.)? After dinner, to be sure, though, I ran through the

You'd measure it (today) with a VNA, making sure that you pick a drive level that's reasonable for the receiver (i.e. if your receiver input can only tolerate -50dBm, then better not put -10 dBm in).

Jeff, Yes you can measure the input impedance of an HF receiver with your NanoVNA but you need to be careful you do not overload the front end. The output of the NanoVNA is around 0 dBm which is too

It should work ok, but make sure your receiver can tolerate the input

Check out W2AEW testing the input of an amp. with a nano: https://youtu.be/7TtKE39TWp Hope this helps. Richard, K8CYK wrote:

Thanks for letting me know David,? I have cleaned a lot from here so only right I give something back. Only to happy for next year.? Regards Dennis G6YBC

Mike, When you calibrated the unit, did you hit the Reset softkey immediately before pressing the Calibrate softkey and then save to a specific memory slot? If you saved to a mem slot other than 0,

I doubt it, since measuring at the equipment’s antenna port you’re measuring the circuitry inside and there’s no telling what the ‘results’ will be. But you’ve nailed down how to test

There is a better than even chance that my NanoVNA is fine and I'm the issue.? However, I started playing with my new unit this weekend and did some basic things, swept a little telescoping antenna

All, As I posted yesterday, we have sufficient funds pledged to pay the groups.io fee for 2022.? The response, in under two days, has been overwhelming. **Further pledges are not necessary**. We will

I have been a member of the group for a few months, and have derived significant knowledge and benefit. I would certainly be willing to do my part by making a similar contribution. Thanks

I can help with a donation.

I will pledge $5 toward the fee. Raymond Lewis, AA4EZ

I have a small bidirectional amp, I'm using a 20db attenuator. The way I have setup to measure TX gain: S11 to amp input S21 to 20db atten then connected to amp output. I'm see the gain of TX, How do

Tominaz, We have received pledges for funds sufficient to cover the expense for 2022. I have put your name on the list of people who have offered to donate. We will be doing this every year going

Pat, No, there is not link. I was asking for pledges, not actual funds at this time, just so I could gauge whether we could meet the expense by small amounts of funding from various members. Thanks.