ELECRAFT K2 - Page 129

Appendix A K2 RF Board Parts List (p/n E850001A and E850001B)
PICTURE Designators Value Description Part Number
QTY
U3, U9 LT1252 8 pin DIP, VFO Buffer; TX Buffer E600020
2
U5 LTC1451
8
p
i
n
DIP
,
12
-
Bi
t
DAC
f
or
R
e
f
erence
F
req.
Of PLL E600016
1
U6 LMC662 8 pin DIP, (rail-to-rail out); PLL Loop filter E600026
1
U10, U11 NE/SA602 8 pin DIP, mixer; alt: NE/SA612 E600006
2
U12 MC1350P 8 pin DIP, IF Amp / AGC E600000
1
U8 78L05 5-volt reg. (100mA) E600029
1
U4 MC145170P2 (or P1) 16 pin DIP, PLL
E600016 1
W1, W2, W3, W5, W6 1" bare wire Use component leads
0
X1 (X2 not used) 12096 kHz PLL reference oscillator crystal; HC-49 E850007
1
X3, X4 4915.2 kHz
BFO crystals; matched set; HC-49
Typical labeling: ECS D 4.91 -S E850008
2
X5, X6, X7, X8, X9, X10, X11 4913.6 kHz
Filter crystals; matched set, HC-49
Typical labeling: ECS V 4.9136-S E850006
7
Z5 4.000MHz Resonator Ceramic resonator w/caps; 0.2% tolerance E660001
1
Z6 TUF-1 Balanced diode mixer E980025
1
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