| Bandpass receiving filter for 160 meters band tuned on 1.830 MHz | |
 click to enlage the picture. |
This bandpass RX filter has been designed to protect your radio against the strong signals from MW broadcasting band which might overload the receiver. Let's have a look how much it can reject the out of band signals. |
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The filter's input and output are connected to the 'PORT_1' and 'PORT_2' of the NanoVNA-F'. Make sure you have calibrated your NanoVNA for the 1 MHz to 3 MHz range. |
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Setup of the NanoVNA-F V2 To activate the various menus, click on the right side of the VNA display and select the following values: |
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- STIMULUS / START / 1 M - STIMULUS / STOP / 3 M - DISPLAY / TRACE / TRACE_0 (only) - DISPLAY / CHANNEL = S21 (THRU) - DISPLAY / FORMAT / LOGMAG - MARKER / SELECT / ALL OFF - MARKER / SEARCH / TRACKING - MARKER / SEARCH / MAXIMUM |
The bandpass filter attenuation is displayed as follow: |
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