TenTec friends, I am downsizing the station and have found a KR-1B that I have never used and probably never will. This is the keyer specifically built for use with the Corsair II model 561. Looks like new, worked last time (about 10 years ago) and in dry storage since. Asking $45 plus shipping from NJ. Thanks for reading and 73 to all, Mike W2IY