Specifications

MODEL HF81-
2 ADDENDA
Please make the following corrections to your HF81-
2 book:
Page 7C, Step 7.
Page 16, Symbol #R22, 23 Stock
#18045
Schematic R22 and R23.
Part supplied may be dual 500KC instead of 750KC.
This is a direct replacement.
It does not impair the performance of the amplifier in any way. Page 13. va,
Pin 7 should read
1500
instead of 330KC
E. 1209
Electronic Instrument Co.,
Inco,
Long Island City 1,
New York