[CW] AR or K after CQ?

[Mark K3MSB]

>From the 1958 ARRL Handbook:

AR: End of transmission.  Recommended after call to a specific station
before contact has been established:

Example:  W6ABD DE W9LMN AR

K -- Go ahead (any station).  Recommended after CQ and at the end of each
transmission during QSO when there is no objection to others breaking in.

Example: CQ CQ DE W1ABD K

KN -- Go ahead (specific station) all others keep out.  Recommended at the
end of each transmission during a QSO, or after a call, when calls from
others stations are not desired and will not be answered.

Example: W4FGH DE XU6GRL KN

>> I say it is a matter of preference.

Yup.

73 Mark K3MSB