Bob, maybe Jeff (W8CQ) knows the answer. He offer one for the SB220: http://www.harbachelectronics.com/reference/harpg3cart.htm 73s Karl DK2ZZ -- DK2ZZ Member of ARRL, BCC, DARC, DRCG, GDXF SysOp of DB0SUE-7 DX-Cluster telnet to db0sue-7.ath.cx Port 8000 http://www.drcg.de http://www.dk2zz.de