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Hi Tom, Very good. The paper published by Copper Mountain applications was irrespective of frequency. The sensitivity analysis was conducted for the measurement of any S11, S21 so that would

Unfortunately, I still have the same issue with the new buttons not being sensed normally and it does not appear to be a debounce issue. Im starting to think that it might be related to the realtime

Greetings All, I decided it would be interesting to do a series of tests with the nanoVNA calibration optimized for my DIY low reactance reference loads. The objective was to get a feel for

hello, I would like to know if possible to put firmware in the files section with .dfu extension I am not a programmer only a basic user. It's hard to find .dfu files, the different new firmware

* Testing antennas * Fun * Educational The 8753ES and 8720D are not exactly portable. ???I once wrote a bit of code that allowed me to keep the 8720D inside, hook that up to an

The Agilent/Keysight FieldFox range are in theory great analyzers, although they are pricey. The N9912A is very poor though. The FirldFox range have an interesting calibration method

David I have two NanoVNAs and two 1-3000 MHz RF bridges. I get identical results with all four. The VNAs are calibrated with one set of supplied OSL terminations. When I use the bridge with the

The high impedance head is usable for low impedances too, but the accuracy is not as good as the low impedance head. However, I don’t believe that the low impedance head can be used for high

Hi Tom, Did you know that if you are working with antennas (or whatever) close to another characteristic impedance than 50 Ohms, you can just calibrate with that value of load resistor?? The

Hi Larry, Did this solve the flakiness problem with the switch?? In another thread earlier, it was seemingly so common, we concluded it was due to not using pin interrupts, and polling for switch

Hi Kirby and others, My apologies. I've just re-studied the AIM circuit diagram (it's about >10 years that I have studied it last time when I purchased it) and I have to correct myself. It is indeed

Dr, Kirby, Happy to see participation in the group from someone as well known Kirby Microwave. Just wondering why anyone that has thousands of dollars worth of lab equipment at their disposal has

Hello tinhead, Thank you very much for the hint. When you convert with DfuFileMgr.exe intermediate to HEX you avoid to enter a start address in case of the BIN format. That makes it easier to add the

I see a number of references to different firmware versions. It is hard to know what one person are referring to. If the md5 checksum of a binary was given, there would be no doubt whether two

Thank you. With some aspects of amateur antennas have impedances well away from 50 ohms, the RF-IV might have some benefits for antennas, but the design looks more complicated to me, having to get

I upgraded to test 1500Mhz-sweep then went back to August

Hi Kirby, the attachments have loaded up with my second posting. I'm aware that they contain nothing new for you but maybe for some other readers and they show the intended use i.e. to characterize

convert to hex, save it, open hex and convert to dfu

all caps replaced, inductor as well, i found even recommended parts, but still it does not work anymore. By closer look on the design, well, it works exactly as it should - it is power bank IC, it

Just applied a screen protector to my NanoVNA. Tech Armor HD Clear Plastic Film Screen Protector (NOT Glass) for New 2019 Apple iPhone 11 / iPhone Xr - Case-Friendly, Scratch Resistant, Haptic Touch