Note
QST, Sep 1951, p. 7.
Allied Radio catalog 1953 (copyright 1952), p. 43.
For FM reception of police, fire, utilities, etc. Updated in 1955 as the S-94 and S-95.
Built-in speaker.
Caution: Transfomerless circuit
Coverage (S-81): 152 to 173 MHz
Coverage (S-82): 30 to 50 MHz
Power: 120 volts AC-DC
Tubes: (1) 12AT7, (2) 12BA6, (1) 12AL5, (1) 12SQ7, (1) 50L6, (1) selenium rectifier