Icom IC-7400 - Page 5

2 - 1
SECTION 2
.
INSIDE VIEWS
* Located under
side of the point
1st LO PLL circuit
PLL IC
(IC1801: MC145170)
2nd LO and reference oscillator circuit
1st mixer circuit
(Q211, Q212: 2SK1740)
3rd LO PLL circuit
2nd mixer
(D261: HSB88WS)
RF unit
TX 3rd mixer
(IC400: MC1496V)
DSP unit RX 3rd mixer *
(IC280: TC4W53F)
MAIN unit
• MAIN AND RF UNITS