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Back when Morse code proficiency was required for certain radio licenses, what audio frequency was used by the exam tapes, equipment or examiner that generated the Morse code audio? Was there a legal or recommended testing standard for this audio tone frequency?

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  • $\begingroup$ Would this not depend on the location? Morse code proficiency requirements do. $\endgroup$ – a CVn Jan 7 '14 at 12:37
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    $\begingroup$ @Hotpaw2, please edit your question to be more specific and note a locale. As it stands now, there is no way to provide a canonical answer. $\endgroup$ – WPrecht Jan 7 '14 at 13:30
  • $\begingroup$ I am interested in how Morse Code license proficiency testing was done in more than just the U.S., so the lack of locale specification was intended, although including this information in any answers would be helpful. $\endgroup$ – hotpaw2 Jan 8 '14 at 1:14
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    $\begingroup$ @hotpaw2 No one could possibly write an answer that exhaustively listed the tones used for testing everywhere. See discussion on meta: What should happen to regional questions that don't specify a region? $\endgroup$ – Phil Frost - W8II Jan 8 '14 at 13:11
  • $\begingroup$ I do not require an exhaustive answer. $\endgroup$ – hotpaw2 Jan 8 '14 at 15:56
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Since you are in California, let's use FCC examinations. http://www.qsl.net/wj5o/mcode.htm said 600-800Hz and Wikipedia agreed. Also, a review of the FCC's First Class RT Licensing requirements did not state anything about pitch.

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