I think the TBY was early short range voice, Later the BC-1000 FM set. For HF CW, early on the TBX. Later the BC-1306. Scott V. Johnson W7SVJ 5111 E. Sharon Dr. Scottsdale, AZ 85254-3636 H (602) 953-5779 C (480) 550-2358 scottjohnson1 at cox.net scott.johnson at ieee.org