With all the chatter about the keying of the SB200 by a solid state Transceiver, I find it hard to believe that I haven't seen the information to point the user to Harbach's site to buy and install the soft key add on. Maybe I missed that info. I have used Harbach soft key on my SB220 and SB200's with excellent results. http://www.harbachelectronics.com/ Art WB9JKZ