USB 2.0 is hard to do over fiber, thanks to it beimg pseudo differential. So both ends of the fiber need smarts for it to work. Onlybreally seen those Analog Devices made USB isolators on the market a

The SAA-2 / NanoVNA v2 designer has stated that si5351 and adf4350 had better phase noise performance with a 24MHz clock, so that is what got used.

People seem to do it with variable resistors at input and output and tweak those untill the passband looks nice and flat. Then the resistors can be measured with a multimeter to find out the impedance

From what I understand SAA2N has better dynamic range than the 1.5GHz nanoVNA and thus is better for duplexer and cavity filter tuning.

NanoVNA uses si5351 above it's spec and most chips work fine above 200MHz and up to 300MHz, but some are a few MHz short of it. This has been discussed here before and the key is the point where the v

Why post rants directed at a single person publicly? Ragcheving has it's place and this board is likely not it, similarily to some folks stsrting to chew the rag during some technical net and then get

I have one like that from ebay and its not usable above 500MHz and had 1.7swr on 1GHz. The typical construction for those long loads is a common metalfilm resistor inside the tube. Mine was advertized

On my nanovna clone the battery was slightly bulged from the factory. It's mad that the known wouxun fault from 2010 still persists (they put the battery voltage measurement voltage divider BEFORE the

It would not. GPL:ed software does not care about the license of the hardware it runs on. If it did, Dell and Lenovo would have to release the schematics and board files of their offerings running Lin