Gentlemen, Does any one out there know if the QSK on the HF-2500 can be added by the buyer or does it have to be done at the factory??????? Larry AA7LR -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting.com Search: http://www.contesting.com/km9p/search.htm