Flash Cards

E4E12

What is one disadvantage of using some types of automatic DSP notch-filters when attempting to copy CW signals?

• A. A DSP filter can remove the desired signal at the same time as it removes interfering signals
• B. Ringing in the DSP filter will completely remove the spaces between the CW characters
• C. Any nearby signal passing through the DSP system will overwhelm the desired signal
• D. Received CW signals will appear to be modulated at the DSP clock frequency