-pro tip- *Amateur tip:* If you are calibrated between two frequencies, say 3-30MHz, you can zoom in to anywhere within those frequencies _without the need for recalibration_ For example, you can zoom in and set the stimulus to scan say 6.5-7.5 MHz and it will work. You can then change the stimulus to say 26-29MHz and it will work without calibration What you’re missing is the precision across those frequencies, but they’re more than close enough to inspect, tune and match an antenna These NanoVNAs have a fixed number of calibration points between any given range. The calibration programs the VNA’s inconsistencies at various frequencies to essentially give you a flat response, a bit like using a multi band graphic EQ to give you a flat frequency response from a stereo or PA system. The more spread out these are the less accurate it will be, however it interpolates what it thinks is the response will be between those points, so it’s possible to zoom in and get an accurate enough reading to tune an antenna.
-pro tip- *Amateur tip:* If you are calibrated between two frequencies, say 3-30MHz, you can zoom in to anywhere within those frequencies _without the need for recalibration_
For example, you can zoom in and set the stimulus to scan say 6.5-7.5 MHz and it will work. You can then change the stimulus to say 26-29MHz and it will work without calibration
What you’re missing is the precision across those frequencies, but they’re more than close enough to inspect, tune and match an antenna
These NanoVNAs have a fixed number of calibration points between any given range. The calibration programs the VNA’s inconsistencies at various frequencies to essentially give you a flat response, a bit like using a multi band graphic EQ to give you a flat frequency response from a stereo or PA system.
The more spread out these are the less accurate it will be, however it interpolates what it thinks is the response will be between those points, so it’s possible to zoom in and get an accurate enough reading to tune an antenna.
🍺 coming your way! 😂
@@TheArtofEngineering I’ll edit up those clips for you. Parks off the air.
Inspired me to build a better mouse trap