Elecraft KPA100 Manual User Manual
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to 3 one-digit status codes, alone or in combination. For example: E1,
E 1 2
, E478, etc. The status codes are: 1: PA is in QRP mode. 2: No
power supply is connected to the high-current DC jack. 4: SWR became
very high during transmit at or near full power. 7: Heat sink temperature
was over 85 degrees C. 8: Always appears after setting CAL tPA. If it
cannot be cleared by turning power off/on, it may indicate a problem with
the KPA100 MCU.
Table 3. KPA100 Diode DC Voltage Chart.
Ref.
Anode
Cathode
Ref.
Anode
RX, 0-10w
Anode
RX, 11-110w
Anode
TX, 0-10w
Anode
TX, 11-110w
Cathode
RX, 0-10w
Cathode
RX., 11-110w
Cathode
TX, 0-10w
Cathode
TX, 11-110w
D1 17 100 D11 14.1
1.5
13.9 1.6 14.0 14.0 13.9 0.8
D2
66
17
D12
14.1 1.5 13.9 1.6 119 0.8 115 113
D3 15 66
D13 14.1
1.6
14.1
See
Note 1
14.1
14.0
14.0
See Note 1
D4
29
15
D14
14.1
1.6
14.0
See Note 1
117
0.8
116
113
D5
14
29
D6
13.8
14.1
D7
-17
-0.25
D8
-0.25
0.0
D9
14.1
13.8
D10
0.0
14.1
Note 1: Caution – High RF voltages may be present
Important: The voltages shown are actual measurements made on a properly working KPA100. Variations of up to 10% of the value shown due to
power supply voltage differences and component tolerances are to be expected.