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No, negligible firmware is specific to those constraints.

Since I am only interested in RF from 30MHz and below, would it be worthwhile to make a firmware that didn't support harmonics and limited the VCO to <30MHz? Thanks

RE: "First BNC up to 3ghz is a reliable connector, no different from TNC. Caveat; use good stuff and make sure you do not interchange 50 ohm BNC with 75 ohm BNC, really they are different!" Yes they

Hi Kurt. Thanks. This is the switch I bought: SIVERS LAB PHILIPS COAXIAL SWITCH 28V DC-18Ghz PM7553 Isolation below 1GHz is better than 80dB so I guess below 300MHz good enough. As I am currently the

Hi Erik Using the transfer switch is just a lazy method to swap the direction of the DUT. Actually dependent of the transfer switch quality you bought you make get poorer isolation between port 1 and

NanoVNA has receiver, but it cannot digitize receiver output with enough bandwidth to listen AM or SSB radio. You can try to connect your PC soundcard to SA602 outputs and use HDSDR to listen radio,

Hi Erik Just one more practical comment. Whatever you do the single forward and the single reverse measurement s1p files does not carry any information about the port mismatch to take into account for

Yes, CH1 is a receiver that looks for signals at the frequency (or harmonic) of CH0. Keep in mind that nanoVNA steps, rather than sweeps, so that if set for a wide span will probably miss a narrow

Read here: /g/nanovna-users/topic/34079496#2165 -- NanoVNA Wiki: /g/nanovna-users/wiki/home NanoVNA Files: /g/nanovna-users/files Erik, PD0EK

I've found and bought an affordable SMA transfer switch (2x2 switch) on eBay and I was hoping it would allow me to extend nanoVNA or one of my home build VNA's to full two port capability by extending

Hi, I'm quite new to the topic. I learned a lot about the bad design of commonly available antennas and have modified quite a number since then with the help of the Nano. From what I understand, a VNA

Hi Gabriel You are right it is a matter og software and for that matter firmware. As the NanoVNA is presently it does not have facilities embedded for neither calibration kit data and full 10/12 term

@ Gary O'Neil, N3GO - 8 December 2019 /g/nanovna-users/message/8024 Dear Gary, Once again, we thank you for your time. You are right. Yes, this is indeed an endless,

Hi Eric A 10dB att in the Ch1 path will not cure the problem as you also have a (invisible) mismatch in the Ch0 sourse impdance as well. So two attenuator might give some further improvements. But it

I've deliberately chosen not to rely on scikit-rf in NanoVNA-Saver. Library reliance is kept at a minimum, and figuring out the mathematics behind the calibration was part of the fun of writing the

Kurt, It appears (in my limited understanding) the poor matching to Z0 of CH1 (port 2) is the biggest reason why the T-check is not performing well on the nanoVNA. Would you agree that using a 10dB

Stylus: Guitar pick works also STX VHF/UHF Rover

I find metallic works well.

i use a pen cap or a tooth pick its a resistive screen so anything pointy and non metalic will work even a #2 pencil

Photos? On Sun, 8 Dec 2019 at 1:49 PM, Nulluser00@...<Nulluser00@...> wrote: I mounted my NanoVNA on an Budd aluminim cast box and use male SMA to male SMA to a female SMA to male BNC