Disassembly For Repair; Circuit Description - Kenwood TK-3302 Service Manual Supplement

TK-3302
Screw sequence for mounting the TX-RX
unit to the chassis
Attach the TX-RX unit to the chassis using the screws in
the order shown in the drawing below.
1. Frequency Confi guration
The receiver utilizes double conversion. The first IF is
38.85MHz and the second IF is 450kHz. The fi rst local oscil-
lator signal is supplied from the PLL circuit.
The PLL circuit in the transmitter generates the neces-
sary frequencies. Fig. 1 shows the frequencies.
6

DISASSEMBLY FOR REPAIR

CIRCUIT DESCRIPTION

TX/RX :
ANT
1st MIX
ANT RF
SW AMP
38.85MHz
RX:
TX
AMP
TX:
q
Model Type
TK-3302 K2,M2 470~512MHz
TK-3302 K3 400~430MHz
Fig. 1 Frequency confi guration
TX-RX UNIT
Component side view
CF
450kHz
MCF
IF AF
SYSTEM AMP
38.4MHz
X3
TCXO 12.8MHz
multiply
RF PLL
MIC
AMP
AMP VCO
w
470~512MHz 431.15~473.15MHz
400~430MHz 361.15~391.15MHz
SP
MIC
e