QNB (amateur radio)

QNB is a joke on the Q code used in Amateur Radio, and in particular the fact that each Q code has one question form and an answer form. Furthermore, it is a joke that a lot of Morse code procedures are supposed to use the slant bar (/, sent as -··-·). Finally, it is a joke about fancy new radio equipment that has way more features than it operators ever use.

The question form, QNB?, is supposed to mean "how many buttons does your radio have?"

A reply of the form QNB 45/15 means "45, and I know what 15 of them do."