Elecraft K2 Owner's Manual User Manual
Page 169
17
RF BOARD (Shaded areas indicate transmit-mode voltage measurements)
Ref. Pin VDC Ref. Pin VDC Ref. Pin VDC Ref. Pin VDC Ref. Pin VDC Ref. Pin VDC
D1 A
0.0 Q12 S
0.0 U1 1
6.0 U3 6
4.3 U8 IN
8.0
C
7.5 G
6.0 2
6.0
7
8.0
GND
0.0
D2
A
8.0 D
0.0 3
0.0 8
0.0
OUT
5.0
C
7.5 Q13
E
0.6
4 0.0 U4 1 2.1 U9
1 0.0
D3 A
8.0
B
1.3 5
0.0 2
2.4
2 6.9
C
7.5
C
7.5 6
0.0 3
0.0
3 6.9
D4
A
8.0
Q16
E
0.0 7
0.0 4
2.3
4 0.0
C
7.5 B
0.6 8
0.0 5
5.0
5 0.0
D5
A
0.0 C
2.2 9
0.2 6
5.0
6 6.9
C
8.0 Q17
S
0.0 10
0.15 7
0.0
7 13.8
D6
A
8.0 G
2.2 11
0.0 8
0.1
8 0.0
C
7.5
D
2 to 3
12
0.0
9
0.0
U10
1 1.4
D7 A 0.0 Q18 G -1.0
13 0.0
10 0.0
2 1.4
C
7.5
S
2 to 3
14
0.0
11
0.0
3 0.0
Q2
S
0.0 D
6.3 15
0.0 12
0.0
4 5.0
G 8.0 Q19 G 0.0
16 0.0
13 4.0
5 5.0
D
0.0 S
0.8 17
0.0 14
5.0
6 6.0
Q5
E
0.6 D
8.0 18
6.0 15
5.0
7 5.5
B
1.3
Q20
S
0.0 19
0.0 16
5.0
8 6.1
C
12.4
G
8.0
20 6.0 U5 1 0.0 U11 1 1.4
Q6
B
1.1
D
0.0 21
0.0 2
5.0 2
1.4
C
13.3
Q21
E
1.6 22
0.0 3
5.0 3
0.0
E
0.4 B
2.3
23
0.0 4
5.0 4
5.0
Q7
B
0.6 C
13.2
24
0.0 5
0.0 5
5.0
C
13.4
Q22
E
1.3 25
0.0 6
2.0 6
6.1
E
0.0 B
2.0 26
0.0 7
0
to
4
7
5.6
Q8
B
0.6 C
12.5 27
0.0 8
5.0 8
6.1
C
13.4
Q23
S
0.0
28
5.5
U6
1
0 to 8
U12
1
7.9
E
0.0
G
0.0
U2
IN
13.7
2
0 to 4
2
7.9
Q10
S
1.6 D
8.0
GND
0.0 3
0
to
4
3
0.0
G
8.1
Q24
G
0.0
OUT
6.0 4
0.0 4
2.5
D
1.6
S
1.2 U3 1 0.0
5 4.0
5 3.9
Q11
E
0.0
D
1.3 2
4.3 6
4.0 6
2.5
B
0.6
3
4.1 7
0
to
8
7
0.0
C
1.3
4
0.0 8
8.0 8
7.9
5
0.0