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C26 and C27 connect to the output of the transmission mixer. Do not expect a lot of sensistivity for noise going back into the output, especially because of C32 and C33 removing all HF. Most unwanted

I believe the main function of the shielding in this design is to improve isolation between the signal source and the SA612 receivers (so, to W5DXP’s question, I doubt there’s much improvement at

To better understand the performance of the nanoVNA I did a small comparison with my home build VNA. This home build VNA uses the same SI5351, the same three SA612 mixers but instead of an embedded

this is because shield installed incorrectly, it affects circuit performance. Shield is needed. But this PCB has some design mistakes which makes proper shield installation more hard. Probably this is

Hi Bryan, there's a 0.3.1 out now - as far as I can tell, it only reverses the sign of "group delay", so not a big change. I don't think it should affect your measurements, but I thought I would

NanoVNASharp MOD v3 is released: https://www.rtl-sdr.com/forum/viewtopic.php?f=4&t=4881&p=12524#p12524 Whats new: - added CAPTURE button, which allows to get screenshot from the NanoVNA - completely

This bug is fixed in the NanoVNASharp MOD v3: https://www.rtl-sdr.com/forum/viewtopic.php?f=4&t=4881&p=12524#p12524

I did

QRP RX, There is no easy way (impossible) to make two sections under the larger shield and have any sort of continuous solder line to the board, so perhaps I'll just take it off. I'll take your other

Question: If the NanoVNA is used only for HF, are the shields necessary?

You could do what I did when I got my Nano back in June - use a very thin cellphone battery.It's perfectly safe and there are a couple of photos in the photo section of the forum:

Excellent information. Thanks for taking the time to provide this information. Tom Stiles

Hi Nan - Thanks for heads up; I was unaware of any differences, other than between two ("AA") and four trace versions. Unlike commercial software and firmware, open source developers typically do not

I surely did.. BR-Nan-vk2krn

Thanks to all for your responses. The "Reset" menu option got me very confused but its clearer now. For example, Recall 1 and Reset only clears Register 1 and not "ALL" Cal data as I originally

Me too. -- Regards, Martin - G8JNJ

#66: Public Invitation : #66 Hello, Allow us, please, to generally express our clear point of view on these extraordinary stupid demands expressed by impotent members of this group, by addressing in

Hi Jim There is no substitute to hard work. Besides I have a Magic Wand ? Kind regards Kurt -----Oprindelig meddelelse----- Fra: [email protected] <[email protected]> P? vegne af

Also it seems that this PCB layout is not good. Because it don't allow to place shield edge on safe distance from c26, c27. Also it looks that there is impedance problem with wire to SMA connector.

ideald shield should be soldered with no gap. Because any gap leads to ground loop. Longer gap leads to higher noise. Did you see these through holes on the pcb ground? These holes are named "vias",