Group: Picked up nice SB610 but w/o manual. Using Chuck's Pensens Book have determined this guy was wired for RTTY. No coil installed as indicated in Chucks description...and the other parts Chuck mentions don't seem to be there either. So...would like to re-wire for Heathkit equip IF...anybody got spare parts for 610 I surely would be interested.. Thanks 73 Ray, W2KBR/3