A male amateur radio operator can be referred to as an OM, an abbreviation used in Morse code telegraphy for "old man", regardless of the operator's age. A single female amateur radio operator can be referred to as a YL, from the abbreviation used for "young lady", regardless of the operator's age. A licensed married female is sometimes referred to as an XYL.
-- https://en.wikipedia.org/wiki/Amateur_radio_operator
При этом стоит учитывать, что средний возраст радиолюбителей - 68 лет (из того же источника).