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Elecraft KX1 Manual User Manual

Page 86

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LOW-
PASS

FILTER

POWER

AMP

(Q6)

Appendix C KX1 BLOCK DIAGRAM

W. Burdick/E. Swartz Rev. A 10-04-00

RCV

MIXER

U6)

BUFFER

(Q1)

DRIVER

(Q4, Q5)

AGC

(Q9)

Common

Transmit

Receive

KEY

DDS VFO

(U2)

DISPLAY

AND

CONTROLS

CRYSTAL

FILTER

A.F.

AMP

(U4)

LOW-PASS

FILTER

BFO

4.913 MHz

WithVFO = 7000.00 kHz and
RX Mode = Normal (CW):

Fdds, RX = 11913.6 kHz

Fdds, TX = 7000.00 kHz

4.9136 MHz

BAND-

PASS

FILTER

MCU

(U1)

PROD.

DETECTOR

(U5)

T-R

(Q7)