Definition of "YL"

YL

noun
plural YLs
1. (slang) A female radio amateur.
  Quotations
  Games for the harmonics, (children), YL's and XYL's and the OM's, plus free soda for all.
  1967, CQ: the Radio Amateur's Journal, volume 23, numbers 7-12, page 140
2. Initialism of young learner.