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A standard CW filter operates on the IF (RF after at least one stage of downmixing, but before demodulation). Elecraft's APF operates on the demodulated audio. The reason most filtering is done at IF is because making a nice sharp filter becomes easier the higher the filter's center frequency (within reason). In Elecraft's opinion, a filter with the more ...


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Thailand For its own amateur radio licences, Thailand has three grades - Basic, Intermediate and Advanced. Basic allows access to the 2m VHF band only, and the higher two grades allow access to HF as well. The Intermediate and Advanced licences require a basic Morse code test, although it looks like it's very simple. However, Thai amateur radio licences are ...


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India India has two classes of licenses - general and restricted. Getting the general license requires sending and receiving morse at 8 wpm. [Source][1] [1]: https://arsi.info/wpc-rules/#post-5:~:text=PART%20II%20%E2%80%93%20Morse%20(Only%20for,Morse%20reception%20and%20sending%20(8%20wpm)


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Morse Code is a timed on-off signaling method that is not restricted to CW radio, as it was invented decades before Maxwell hypothesized the existence of radio waves. Morse Code can be used for communicating with clicking relays, buzzers, flashlights, mirrors, eye blinks, printed text, flag waving, Zoom, one or more sound channels of a highly encoded ATSC ...


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You don't say where you are hearing the Morse code. You say "on the same channels", but don't specify where you are listening. If you send Morse code using a buzzer, then that generates an audio tone. As with any audio, that can be sent over AM, FM, SSB or any other mode that can send audio. It is quite common for Morse code to be sent as an audio ...


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