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Hello: I’m reading this topic since a couple of hour. Its clear that NanoVNA has a poor shielding. These instruments are very cheap …the good news is that there are many things to enhance on them.

A hamstick is a helically wound whip antenna with an adjustable stinger for tuning the antenna to a desired frequency. But it is only "one half" of an antenna system. The other half can be another

The timeline for submission of papers and presentations has been extended to March 17th.

The VNA and you, when hold on hand, are part of antenna. You must change the installation, feeder route, ground if possible properly. Any trick to allow a reliable measure if removed later for normal

Not familiar with windoze tools but it seems that it is complaining that the firmware is in the wrong format. Try the .dfu firmware file? Anyway you can't brick these devices, even in the worst case

Insertion Loss method ( this is resonance with VNA) uses to produce Q values higher than Q meter. Take note that Q meter measurements are absolute , independent of residual capacitance on inductor,

Thanks for thinking about this. I went back and measured the #22 coil several ways and everything seems to agree within known errors. With the 260, I just use the capacity scale (they call it mmfd

Can anyone explain this problem? I'm afraid to proceed on my H4. I FAFO and bricked my 2.8" H. RJ K8CYK Attachments: - dfu.PNG <https://kenwood-hybrids.groups.io/g/main/attachment/13465/0>

Thanks a lot for the prompt reply Colin. Shall come back to you in case it doesn't work out. 73 Jon, VU2JO [email protected]> wrote:

The steel table may have an effect. But based on your description, the antennas are some distance away from that table. The table will likely not have any impact on the antenna system if it's

I am waiting for NanoVNA to be delivered this week. My FT-710 radio is on a steel table. I am planning to use an SMA to SO239 patch cable of 1m length to connect NanoVNA to PL 259 of my

Put the NanoVNA on a non conductive surface well away from where the antenna is mounted. The reason you are getting different readings is because you are changing the ground plain of the antenna

I forgot to subtract 10 nH for the residual 4342A internal inductance. In addition, the 0.5" leads (the exposed part beyond the HP binding post) should add 17 nH. I'm not sure if you included leads,

Thank you, Dave W0LEV, I suspected this was the case. Thank you for taking time to reply and explain. I look forward to learning more about this useful tool. Yours, Coyote KO4UPH

This is quite normal. What you are doing in handling or connecting your NANOVNA to something is adding yourself or a laptop or charger to the antenna you are attempting to measure. Sit the NANO on a

When using my NanoVNA to adjust length of a 20m hamstick, the readings kept changing depending on what the NanoVNA was sitting on (truck hood, pelican case, my thigh, or in my hand). How do I get a

When using my NanoVNA to adjust length of a 20m hamstick, the readings kept changing depending on what the NanoVNA was sitting on (truck hood, pelican case, my thigh, or in my hand). How do I get a

Properly calibrated 260A and 4342A do not indicate the the same Q! After describing the unique design features of the 4342A, the manual states, "Consequently, the 4342A will indicate higher Q values

Hi Roger - I use the method of figure 7.66 "Series TC." This is simple with a nanoVNA, or any VNA. For this particular coil, I found an old CD 470 pF silver mica cap and used that along with a 30

A little on the pricey side, @ $115USD on amuzoon or higher on ebayism. Mike C. Sand Mtn GA