how does a duo narrowband filter work
A duo narrowband filter works by selectively allowing only a narrow range of frequencies to pass through while blocking all other frequencies. This is achieved by combining two separate narrowband filters with overlapping frequency ranges.
When the two filters are combined, they create a combined filtering effect that narrows down the range of frequencies that can pass through. This allows only the specific frequencies within the overlapping range to be transmitted, while filtering out all others.
Overall, a duo narrowband filter works by selectively filtering out unwanted frequencies to isolate and amplify the desired frequency range. This can improve the signal-to-noise ratio and enhance the clarity and quality of the transmitted signal.