[Elecraft] KX3/KX2 voltage display

[Lyle Johnson]

Hello Erik!

Yes, it is expected.  There is low-drop diode in series with incoming 
power to protect the radio circuitry from reversed polarity at the power 
connector.  The typical voltage drop is about 0.3V at nominal current.  
The internal "12V" supply voltage being reported is after the diode's 
voltage drop.

Both radios share this characteristic.

73,

Lyle KK7P


On 1/2/17 10:46 AM, E T wrote:
> When using the special VFO B display to show the supply voltage, both my KX3 and KX2 disagree with the rest of my equipment.  The radios consistently are 0.2V - 0.4V lower than my inline meters and my Fluke when measured at my RigRunner distribution block and at the end of a cable (e.g. if I disconnect my PX3).  I don’t see any way to calibrate this, is this expected?
>
>    Thanks and 73,
>    Erik Tkal  -  W1QED