Hi John;

Definitely: the SB-102 has a solid state LMO. The SB-101 a tube.

As I Recall: a change in a couple of the receiving tubes and
resistor values.

Nothing Earth-shattering took place.

Still my favorite rig of all times.

73,
W6ESE - tony
NNNNZCZC

John Crane wrote:
I haven't found it on the net, but I'm sure someone knows -- what are the
basic differences between the Heatkit SB-101 and the 102?