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Excellent point. Is there a tag between the analyzer sweep range and its resolution BW? I should do a cal over a reasonable narrow frequency range and see if this helps the situation. Otherwise it may

it's not that surprising, I think, considering that the RBW (or IF BW) of this instrument is definitely not narrow enough to give you the resolution required for like a 1KHz or perhaps even 5KHz span.

So ... I have played a little more ... Thanks to Larry for listing the serial commands ... I can now command my nanoVNA from ubnuntu using them .. and after a play and putting putty on the same

I started looking at some narrow band mechanical filters. The measurement was challenged to look at a 500 Hz wide 455 kHz filter. I will double check if the limits are 101 data points/interpolation or

I use an old blackberry 800mA charger. Grab the datasheet for the IP5303 charger chip that's used for more info. https://datasheet.lcsc.com/szlcsc/INJOINIC-IP5303_C181693.pdf (Chinese) 1.2A Charging

Thanks, I was wondering about the charger . It will at least charge a 800ma Thanks

Frank - do a search though the forum and you'll find all kinds of useful info that others have already supplied... Have a look at my posts & photos - I stuck an old Motorola 800mAH cellphone batt on

Does anyone know how big a battery in mAh (charging wise) the unit can handle? Frank

Is anyone interested in an extended back cover for the NanoVNA? I designed and printed a sample it has a 6mm deep "pocket" that is 71mm X 40mm. Should be big enough to double sided tape a bigger

I just ordered 1 from Banggood preorder, I hope this is the correct one to make sure Huegen gets paid for his work

Several discussions with my ham colleague Gary, N3GO and wrestling in a quite area, I believe I have ONE approach that works well and is consistent with proper results. The main items to note: Only

You know, of course, that the signal out is a square wave. According to the schematic, the Si5351 feeds the output directly through the resistor bridge..

I believe that's exactly how they have extended the range of this instrument to 900MHz: by using the harmonics. otherwise Si5351 is only rated up to 200-300MHz. This is the same principle used in

I was interested in the performance of the output signal. So at first I measured the output power: 10 MHz -12,13 dBm 50 MHz -12,57 dBm 100 MHz -13,21 dBm 200 MHz -14,85

This is a very interesting group. I am not a radio expert or hobbyist. I am using vector network analysers to make biological and chemical sensors from piezoelectric resonators ranging from 200MHz

This is the highest filter I had from the junk box without exceeding the limits of the instrument. The next filter up was centered at 902 MHz. So trying to get a sense of measurement DR would be a

Thanks Larry, Yes... understood. My acid test so to speak was the 1 dB pad shorted which resulted in a Gamma of 0.86. I found the white unit quite good and published the polar response in a prior

Hi Alan, I've got the antenna analyser firmware installed and I'm not really using the device for S parametric testing. My 'lower noise' comment referred to a quick & dirty test (I'm at work so can't

Hi Larry, thanks for the inputs. Can you elaborate on the statement: big difference in noise levels. The second photo shows a closeup of the installed shields - big difference in noise levels! If

Hi Larry, You can also add solder points to the SMA sockets. On the black NanoVNA they are welded on both sides, but only one PCB side is soldered on the white NanoVNA. David, F4HTQ.