ELECRAFT K1 - Page 73

Note: All Inductors in table below are wound with #26 red enamel wire on T37-6 cores (Elecraft p/n E680013)
All capacitors are NPO disc or monolithic, 5%, 0.2" lead spacing. Values are in pF.
*Some small-valued capacitors may use an "R" or other lettter rather than a decimal point, e.g. "2R7".
Band1___
Band2___
80 meters
(3.5 MHz)
40 meters
(7.0 MHz)
30 meters
(10.0 MHz)
20 meters
(14.0 MHz)
17 meters
(18.0 MHz)
15 meters
(21.0 MHz)
C1, C5 C6, C10 2 470 ("471") 390 ("391") 220 ("221") 180 ("181") 100 ("101") 100 ("101")
C2, C4 C7, C9 2 1200 ("122") 330 ("331") 180 ("181") 120 ("121") 82 68
C3 C8 1 10 4.7 or 5* 2 or 2.2* 1 1 1
C11, C15 C16, C20 2 5600 ("562") 2200 ("222") 1800 ("182") 1000 ("102") 680 ("681") 470 ("471")
C12, C14 C17, C19 2 2700 ("272") 560 ("561") 270 ("271") 120 ("121") 82 56
C13 C18 1 82 10 4.7 or 5* 2.7, 3, or 3.3* 2 or 2.2* 2 or 2.2*
C21, C23 C24, C26 2 1200 ("122") 470 ("471") 330 ("331") 220 ("221") 180 ("181") 150 ("151")
C22 C25 1 2200 ("222") 820 ("821") 560 ("561") 390 ("391") 330 ("331") 270 ("271")
L9, L10 L11, L12 2
2.5 µH
28 turns
20" (51 cm)
1.40 µH
21 turns
14" (36 cm)
1.0 µH
18 turns
12" (30 cm)
0.8 µH
15 turns
11" (28 cm)
0.6 µH
13 turns
10" (25 cm)
0.5 µH
12 turns
9" (22 cm)
X1 X2 1
11.500 MHz
p/n E660011
15.000 MHz
p/n E660008
18.000 MHz
p/n E660007
or 18.100 MHz
p/n E660010
22.000 MHz
p/n E660004
26.050 MHz
p/n E660012
29.000 MHz
p/n E660005
Value p/n Value p/n Value p/n
1 E530068 150 E530049 1200 E530005
2 or 2.2* E530047 180 E530008 1500 E530002
Capacitor 2.7, 3, or 3.3* E530065 220 E530042 1800 E530035
Part Numbers 4.7 or 5* E530048 270 E530050 2200 E530054
10 E530006 330 E530043 2700 E530003
22 E530017 390 E530051 5600 E530073
56 E530015 470 E530004
68 E530007 560 E530052
82 E530038 680 E530053
100 E530034 820 E530018
120 E530041 1000 E530072
Per-Band Components, 2-Band Filter Board only
Qty.
Ref. Designators Components
(Refer to KFL1-4 manual for 4-band Filter board parts list)