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Has anyone noticed when you enter "m' or "M" for the start frequency, you will get different results? I don't quite know what I am getting when I use a lowercase m. Bob M

Al, I think the assumption in the document is that the calibration is being done at the end of the cables, rather than at the NanoVNA connectors. Assuming a male-male cable, you need the F-F adapter

Thanks Mohammed :-) Larry, K4MLA

Hello from a new NanoVNA user! Reading over the most recent calibration document found in the 'Files' section,

Hi Paul. Got my -H yesterday. Short story is that my older Win10 tablet device manager found it, but no functioning driver, so program could not connect. I had to manually install the (Win8) driver.

Hello Larry, The -f version has its own group where they publish new firmwares. /g/nanovna-f Best Regards, Mohammed.

Hello, Currently, I have firmware # 0.0.4 (I think). What is the latest and where can I find it?? Thank you for the help. Larry, K4MLA

No stock today. They are popular. I just hope Post between China and Finland started to work. Both countries seem to be allright, the packets should move, but they don't.

I not at home at next 1-2 week (possibly more). At return if all work fine, i upload fixes to my repo (https://github.com/DiSlord/NanoVNA)

Create firmware for H4 device, remove frequency table from properties struct, rebuild this table on load properties It allow reduce properties size (on 201 points) from 0x3000 to 0x2000 (8kB for one

Hi Hans, Thank You for all explainations and suggestions about several kind of measurements- very nice and thanks again. Today have had time to made some other tests and the Issue was solved. The

DiSlord, Hi! can give a link to the source code of this file NanoVNA-H v0.8.4.1_96kHz_ADC_800Hz_sweep_points Thanks.

Hi Peter, I gueth, your SWR meter is not to be blamed, the NanoVNA measured data seems to be looking more questionable. Using NanoVNA Saver, you have a ground via the USB cable, plus your body ground

I have no clue why Iam receiving this I never posted in that subject

Possible the very regularly spaced jumping up & down in plot is due to the live antenna bringing in a strong air signal even way outside the specific band you are sweeping ,, interfering with the

Hi Jerry, The SWR meter is tested as You have decribed.Also have 50 om / 250W dummy load noninductive till 4Ghz - chip resisor on large radiator.All around SWR meter seems ok.Will continue to digging

Hello , my 1st posting to this wonderful group. I too am looking 144MHz antenna , just a dipole, with a much shorter 5 foot transmission line . * First , I would tend to believe the nano if calibrated

A starting point for determining if a given unknown toroid will be any good for a balun or HF transformer is to wind one or two turns on it and measure the Z of this winding in S11 (ch0 after an OSL

Excellent Herb! I missed that ;-) Glen K4KV

Peter, Do not forget that you must measure a problem antenna with a feed line that is a multiple of a half wave length to actually see the antenna, not the feed line plus antenna. 73 Glen K4KV