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166 ?H is a pretty large inductor and likely has a pretty low self resonant frequency. Try 'de-Qing" the inductor by parallelling it with a 4.7 k to 10 k carbon resistor. If those work, increase the

entilleser via Groups.Io wrote: GalliumOS for the Chromebook isn't trying to run Android apps under ChromeOS. It's a full and fairly robust distribution of Linux which is either available as a boot

Here is an alternative. It may not be precise but can give you an idea of the loss. First you need to have access to the antenna end of the transmission line. 1. Fully calibrate the NANOVNA using your

I am in no way an expert, but if you connect your cable between CH0 and CH1, you will see the loss (or gain) at every frequency. You have to calibrate your VNA fully first .

Hello Rudi, I have made it. I can redo the measurement with the FA5, but as I told you, we tested it with the Rohode&Schwarz with calibrating and the results are comarable.

I post this if anyone is interested. 80MHz seems to be quite a lot for this kind of construction and transistor. I put some aluminium tape on input side parts. Perhaps it made the S11 plot a little

Hi all,how do i measure the loss on a long run of coax using the nanovna,ive about a 60ft run i want to check at hf,cheers .

Check all your cal loads to make sure they have the correct impedance.

Yes, I have also done a reset before calibration

From hwalker: "The issue with Chromebooks has been that with the latest Chrome update you can connect the NanoVNA with the web based application, but not off-line using the Google Play Store android

“Crosstalk between microstrips” — one trick used by at least one up-market spectrum analysers is to put small “bridges” of ferrite, across the microstrip. These are equivalent to the ferrite

The intent is nice but you will not get good calibration using the internal RF switch to do open/short/load/input switching.

Did you apply RESET prior to CAL. Sounds like a faulty CAL.

Take a measure at 1 MHz. Also, the L value should tend to a larger value as F increases and eventually go parallel resonate on the first loop.

Hi Pete, thank you for your interest in this. My European coax cable type "Aircell 7" is not common in the USA. So it was not listed within SimSmith's coax table. In my case length measuring was easy.

Just for fun, I went on Mouser to look for "high frequency" leaded inductors. The only manufacturer they list for such products is Vishay, who has a model TR021 with inductances from 0.022 uH, tested

In the attached image is a picture of the fixture I rigged up for testing leaded components. The two sma connectors are soldered in to the copper on a piece of single side pcb. The center tine of the

These are not intentional sources, just some weak unintended radiation. Bluetooth has a *real transmitter* at 2.4 GHz, where the new nano is likely to be used. Besides slowing down the measurement,

I have a nanovna that continues to indicate 50 ohms when S11 is open. Only if I short-circuit the input will this change. I already calibrated it. But this did not help. Can I do something about this

I can confirm that carbonized foam is quite effective at UHF and above... 73 Glen K4KV