He would need the RS232-C and the IF10b. These are no longer available, unless you know someone "sitting on one". (per Kenwood) I'd take a look at the Piexx board. http://www.piexx.com/cgi-bin/piexx.cgi?p=ts940&cart_id=3919982.7103 It does the job of both pieces, considerably less money. 73, Zig KM9M