Duhh -- screwed up the math somewhere, plus, I calculated for 4 MHz, not 12 MHz.
With the peaker cap set to 12 pf, the 12 MHz gain would be 56 times the low frequency gain. Stated strays of 45 pf across the 24k load implies a nominal peaker setting of 17 pf across the 62k, and indeed the gain ratio is 80x.
__________________
www.bretl.com
Old TV literature, New York World's Fair, and other miscellany
|