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This website itself collects no data about you. Some pages have a form requesting your call-sign etc but that data is not sent to any remote server. If you send a message to a friend from the Morse Code Translator then the message is recorded in a web server log file which is retained for 7 days.
I collect anonymous data regarding the use of the website via the "Matomo" software. I host this securely myself: this data is not sent to another company and no long-lived tracking cookies are used for this purpose.