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Bryan, The lab I worked at had spectrum analyzers and receivers that cost more than my first house. To protect the equipment our laboratory manager purchased a set of HP 11867A limiters ( I'm guessing

Yeah, Reg - Python is the future....! Actually, Python is close to becoming the #1 programming language - educators, engineers and scientists have all created extensions. Talk to forum member Rune

Folks, Thanks for all the comments. I notice that the diagram provided by erik does not indicate any protection. Thanks for that diagram. The 50 ohm bridge mentioned above does provide some help but

[email protected]> wrote: The problem with forth is that nobody else is likely to want or be able to contribute. There are many languages that have niche areas - Lisp, Haskell etc. But the number of

Thanks for posting that detailed test report...fascinating to see what the ultimate ceiling might be. I recall reading that the mixer chip alone has an upper spec. limit of 500 MHz, so the fact that

Sometimes people ask if a nanoVNA can be hacked to work above 1500MHz. So I tried. The firmware was modified so it theoretically can go up to 2.1GHz (7/9 overtone mode) But is it usable with the

I had the same problem and to fix it give the file a shorter name and then upload it. It then worked for me. 73, Trip -- "When the people fear the government, there is tyranny. When the government

Hi, Folks, My whole NanoVNA process started because I went out on eBay looking for an antenna analyzer for ham VHF/UHF use and got my white model because it intrigued me at what was being done at that

Rune, Thanks so much for doing this. Did notice one minor bug. When calibrating out to 1.5 GHz and loading the calibration file in, when starting a sweep it will crash. If only going out to 900 MHz it

[email protected]> wrote: What’s the i*nsertion loss* of a 6 dB attenuator? I would have thought it was 6 dB and not -6 dB. The same with return loss. Dave Dr. David Kirkby, Kirkby Microwave Ltd,

Very interesing to read as this my first VNA to have in hand and i want to discover its possibilties with my ARR,PA3BIY and G4DDK 2m LNAs for EME. I checked a professional cavity BPF (IL=-1.6db) to

Hi, i find out that the IP5305 is the same as the IP5303, with one LED less. I can upload the PDF data in English here.

Dave and Ohan, Thanks. I'm going to try to use the ST-Link V2.0 units I bought so I can gain some experience with using them and the various C development environments. I've got quite a few STM32

Found a UI bug in latest Sept 18th TDR version firmware from Erik in the filles section: - select Display -> Transform -> Velocity Factor - click on the small keyboard image icon at the lower right

Placing a 20 - 100 ohm resistor has not brought a solution. The IP5303 will not start wiyh the SW1 switch. Also, as a test with a 6V / 3W light bulb on the load pin 8, it will not start. Here the load

Hi Rune Many thanks; the full path fixes it... /home/nick/nanovna-saver/full_sweep but ~/nanovna-saver/full_sweep does not work. A few suggestions on the user interface... - how about removing the

Inputs appreciably outside power supply limits will be problematic. ESD was most problematic for CMOS not internally protected. 50 Ohm bridge pretty much protects the active chips; bridge resistors

One other thought. During a discussion yesterday on this group, measurments were taken as to what the OUTPUT levels were from Ch0. They were 200mv peak to peak IIRC. As such, I think I'd want to

Thanks Erik. I read the slides from the link but did not notice mention of another protection method that I've seen using zener diodes. Referring to the attached image, drawing A is mentioned in the

You could use something like a ESD0P4RFL. Will need some space on the board. And it's quite small, but very low capacitance.