E-5
DC Voltage Table – Integrated Circuits
NOTES: Measurements were made with a 50-ohm dummy load connected and a supply voltage of 13 V. The 30-meter option
was installed (KXB30) and the ATU was removed (KXAT1). 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).
Ref. Pin VDC Ref. Pin VDC Ref. Pin VDC Ref. Pin VDC Ref. Pin VDC
U1 1 5.0 U1 18 0.0 U2 7 0.0 U3 4 0.0 U5 5 4.44
2 5.0 19 0.0 8 1.32 5 0.0 6 5.57
3 4.6 20 5.0 9 0.0 6 5.9 7 4.95
4 4.9 21 5.0 10 0.0 7 5.9 8 5.62
5 4.9 22 5.0 11 0.0 8 n/c U6 1 1.39
6 3.4 23 4.9 12 0.0 U4 1 1.26 2 1.39
7 1.4 24 5.0 13 0.0 2 0.0 3 0.0
8 0.0 25 5.0 14 0.0 3 0.0 4 4.39
9 0.8 26 4.7 15 2.5 4 0.0 5 4.47
10 0.9 27 5.0 16 n/c 5 2.97 6 5.54
11 0.0 28 5.0 17 n/c 6 5.93 7 5.04
12 0.0 U2 1 1.15 18 0.0 (n/c) 7 2.99 8 5.62
13 5.0 2 1.18 19 0.32 8 1.26 U7 1 5.0
14 0.0 3 1.41 20 0.32 U5 1 1.39 2 0.0
15 0.0 4 2.69 U3 1 n/c 2 1.39 3 5.0
16 0.0 5 2.69 2 0.0 3 0.0 4 1.17
17 0.0 6 2.69 3 0.0 4 4.44 5 2.69
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