Dc voltage table – Elecraft K1 User Manual
Page 89
7
DC Voltage Table
NOTES: Measurements listed for FIL-U1 apply only to the two-band Filter board; for 4-band Filter board voltages, refer to the KFL1-4
manual. Measurements were made with a 50-ohm dummy load connected and a supply voltage of 14 V. In general, your measurements should
be within 10% of the values shown. Pins NOT listed in the table should indicate 0.0 volts DC. Pins marked with (*) are hard to measure
due to noise pickup. Shaded areas show transmit-mode measurements (using TUNE), made with the Filter board removed.
Reference designators are prefixed with the board identifier: “FP” = front panel board, “RF” = RF board, “FIL” = filter board.
Ref.
Pin
VDC
Ref.
Pin
VDC
Ref.
Pin
VDC
Ref.
Pin
VDC
Ref.
Pin
VDC
Ref.
Pin
VDC
FP-U1
1
6.0
FP-U2
1
1 to 5
3
0.8-1.0
RF-U1
1
1.4
RF-U4
6
6.6
RF-U9
2
6.8
2
1.1
3
6.0
4
6.0
2
1.4
7
13.6
3
6.8
3
6.0
4
6.0
13
5.5
4
4.9
8
6.8
6
6/8
4
1.8
7
6.0
14
6.0
5
4.9
7
13.6
5
6.0
15
< 0.3
6
6.0
RF-U7
1
1.4
6
2.5
FP-U3
5
6.0
FIL-U1
(2-band
board)
16
< 0.3
7
5.3
2
1.4
RF-Q6
B
1.1
8
5.6
6
6.0
8
6.0
4
4.8
C
13.6
9
3.0
8
6.0
5
4.8
E
0.5
10
3.0
RF-U2
1
*
6
6.0
11
6.0
FP-U5
1, 2, 3
3.0
2
1.4
7
5.3
RF-Q7
B
0.0
13
2.3
5
6.0
4
*
8
6.0
C
13.6
14
2.8
6
4.8
5
*
E
0.0
15-17
3.0
7
4.8
6
6.0
RF-U8
1
18
6.0
8
6.0
7
5.4
2
19-22
3.0
8
6.0
4
23
6.0
5
24-30
3.0
RF-U3
1
1.3
6
32
6.0
2
*
7
33-39
3.0
3
*
8
40
6.0
5
4.0
6
8.0
7
4.0
8
1.3