[Hallicrafters] SX77 and SX77A

[Brian Goldsmith]

-----Original Message-----
From: Glen Zook 
There were no SX-77 or SX-77A receivers built by Hallicrafters.  There were
the S-77 and S-77A.



*****How right you are!!!I can't see straight!


  Basically, the S-77 is the same radio as the S-40A and the S-77A is the
same radio as the S-40B.  The only difference is that the S-77 and S-77A
were "AC/DC" radios which had no power transformer and the heaters were
wired in series.

The differences in the receivers will be the same as the differences between
the S-40A and S-40B.  You should be able to compare the schematics for those
receivers to tell the differences between the S-77 and the S-77A.



*****Many thanks for that!!

Brian G.