Hi all Testing NanoVNA App + Windows11 with My New H4 , it seems almost working ok despite some bugs and crasching, but my main problem is : i do not found the new Dislord Coax functions, indeed i am using again this days the RG59 75Ohm coax it has less loss coeff then the RG58 50Ohm Coax measured by to the Dislord coax functions on H4, it has a measured 77.70 Ohm =Z0 specific impedance , and then i measure the SWR and Smith with 50-->77.7 Ohm Dislord conversion function, all seems amasing With H4, Wonderfull Dislord functions , but still no success to do it with NanoVNA App and PC+USB . 73's Nizar .

Newbie here. I am interested in testing antennas for resonance and swr. 80m to 70cm. Both indoors and outdoors. I was thinking of buying an entry level antenna analyzer. Several helpful people suggested getting a nanovna instead as it was said to have a cheap price ($60ish) and extensive capabilities. After reviewing Amazon and eBay for nanovna I don't see much in that price range (at least double and more) and I sense from reading material here and there that there will be a lengthy learning curve with no guarantees it will work for you. Plus it's not obvious which one of many nanoVNA offerings to buy with all sorts of illegal clones and firmware issues abounding. Not really like that with store bought antenna analyzers -Price and features laid out. An I missing something?? Appreciate input. Edward

I received the RF Demo kit for NanoVNA. The cables are indeed fiddly to attach on the pcb board, but I am getting used to it. Just hope that it will last for some long time rather than get mangled, and ruin my investment for the learning. Anyhow I got it to calibrate OK for Open, Short and Load with the Demo Kit board and supplied cables. But when I tried to read for the 30Mhz Band Pass Filter, the readings on the screen didn't come out what is indicated on the board. It was more squiggly curve type graphs on the display. I tried to change the settings with the SPAN and SCALE in the menu, but it made it actually worse or was just showing straight horizontal line. Could someone please explain, what settings the VNA must have to display nice sharp dip of the graph as on the board? What am I doing wrong. I understand the RF board is showing how the band pass filter on the board is blocking the all other frequencies and only letting in 30Mhz in the filter? What should be the settings in the menu of the VNA? Thanks

Hi All I just have my New Nano-VNA-H4 from SEESII , i calibrate it on different spans and empty memory's, all seems working fine, but it does not save the latest recalled calibration memory , at startup it always open the first recall calibration, is this normal ?, How to save the latest recalled calibration for next startup . 73's Nizar

Hi All, New to the group. I have a SAA-2N w/N connectors and cal set. With the necessary adapters (SMA to N etc..) I am not sure I understand if my measurements are correct. Measured (stimulus) from 1MHz - 100MHz; calibrated w/cal set. I then connected a 30db attn and it reads -25.6db @ 30MHz, what is going on? Note: this attn is marked 7-16.5GHz and is an SMA. (I have many of these attenuators and several tests on various units produces nearly the same results) Mike C.

Have watched several videos on this and they all seem to leave out most of the setup. Looking to measure inductance but most interested in self resonance frequency. Resonance will be about 2 MHz I am guessing. Have it across Port1/S11 as seen in the videos but don't have display of anything like in the videos. I have looked at the Absolute Beginners Guide but doesn't cover this.

I realize this hardware is not made for this and results will be poor but I want to give it a shot anyway. New user of the H4 version. Looking to get some idea of signal strength of some local FM and TV stations. I tried setting the start and stop freq for the FM band and looking at logmag of S21 and got nothing - just an almost flat line near the bottom of the screen. Thinking I am missing a few settings. I have searched and read some but haven't found a complete list of settings needed. If I need to do this as some smaller freq bands I could do that.

Hi All Where to bye an accurate 50 Ohm +/- 0.1 Ohm SMA Load to ensure a good quality NanoVNA calibration ? Indeed the most important capability of a nanoVNA is to be calibrated by an external reference 50 Ohm load, the firmware with it's float point computing will do the rest, all quality or default of NanoVNA will be affected by the quality of the calibration Load 50 Ohm , if it has a large band resistor behavior without resonnance or parasitic inductors or capacitors and if it has an accurate resistor value to be refered to, i am not so sure that the loads given by NanoVNA vendors are very accurate , ohmetre measurement gives 50 Ohm +/- 1 Ohm wich is no so good . i would like to bye a better 50 Ohm load reference to be sure to have a good wide band value calibration . 73's Nizar