K

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Z

0 - 9

K

K : The symbol used in CW (Morse) and digital modes for "please respond" or "any station respond". The KN prosign is used to invite a specific station only to respond.

Kilohertz : one thousand Hertz (Hz) or one thousand cycles per second.