Questions tagged [nanovna]

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Using a Return Loss Bridge and Nano VNA to measure amplifier characteristics

One of the difficulties of measuring active devices like LNA and IF amplifiers with the Nano VNA is the care needed to avoid over-driving the amplifier input and, more importantly perhaps, to avoid ...
4
votes
3answers
590 views

Measurement of antenna with VNA does not match its specs

I have a NanoVNA V2 Plus (50kHz - 3GHz) and decided to test my LoRa antennas: an unknown antenna delivered with a LoRaWAN gateway (RAK831) a 868Mhz antenna from Linx Technologies (ANT-868-OC-LG-RPS) ...
3
votes
2answers
215 views

NanoVNA(v2)... what to capture for future reference when comparing past antennas?

I'm designing a HF antenna that uses a portion of a downspout (electrically isolated from the gutters above and lower portion) as a bottom-loaded shortened quarter-wave vertical. I'm about to trim the ...
3
votes
2answers
120 views

Saving snapshot of NanoVNA (v2) data for later review, analysis, comparison, etc

I have a NanoVNA (v2), and I'm using it with vna-qt. I want to capture the raw data from a sweep for posterity, so that I can someday compare different antenna variants for things like SWR, resonance, ...