Date of Manufacture:1967-1970
Manuals and schematics :
Tube and Semiconductor Complement:
19: 6EA8 6AU6 6AU6 6AU6 6EA8 6CB6 6CL6 6146 6146 6AU6 6AU6 6EA8 6BN8 6GW8 6EA8 12AU7 12AT7 0A2 12AT7
The SB-101 80...10 meter Ham Band Transceiver came on the market in 1967 and was produced until 1970. It replaced the SB-100, that came on the market in 1965. The SB-101 was then replaced by the SB-102, that was produced until 1975. The SB-100/SB-101/SB-102 series resembled some of the Collins products at the time, so quite often they were called "the poor mans Collins". The SB-101 was a slightly improved SB-100. The SB-102 was an improved SB-101. The major difference is that the SB-102 has a solid state VFO or LMO (Linear Master Oscillator), as Heathkit called it, but theSB-100 and theSB-101 has a valve VFO (LMO).
Great article with excellent detail: http://frrl.wordpress.com/2008/08/07/collecting-heathkit-models-sb-101102-hw-100101/