I am learning about RF and antennas and I want to understand how do I figure out how much the IF offset is, in NanoVNA-H4. I could not find any article explaining how to check if the default IF OFFSET (12kHz) is accurate.
I also do not understand why its called an offset, since from what I read, this is the frequency that the VNA downconverts and uses it for receive-measure purposes. So it should say "IF", not "IF OFFSET".
After all if it was indeed an offset setting, it would be default to 0, not around 12kHz.
