Kenwood TS-60S Service Manual page 7

CIRCUIT DESCRIPTION
2. Noise blanker circuits
The 10.695-MHz IF signal generated from the first
IF of 73.045MHz by the second mixer is input to IF am-
plifier Q21 (3SK1311, sent through Q20, amplified by
noise amplifier 0 2 0 0 . 0 2 0 1 , and 0 2 0 2 (2SC2714).
sent through buffer Q203, and noise-detected by
D200. This signal switches Q205. Q206, and Q209,
and controls Q22 in the TX-RX unit. Q22 controls IF
amplifier Q21 and blanks the noise.
7h
? ? 7
TX-RX UNlT
. . . . . . . . . . . . . . . . . . . . . . . .
PLL UNlT
Fig. 6 Noise blanker circuits
7