[Elecraft] K3 Voltage on TX

[Don Wilhelm]

Dick,

If the main interest is the drop in voltage, the 12V jack will work 
fine, no matter how many diodes are in series with it.
So you get 10 volts during RX and 9 volts during TX, that is a 1 volt 
drop (OK, that is extreme, but hopefully makes the point).
If you are instead looking for the absolute voltage delivered to the K3, 
use the VFO B voltage display.

73,
Don W3FPR

On 10/26/2015 7:29 PM, Richard Fjeld wrote:
> It would be nice to have test point type jacks on the back of the K3 
> to test the voltage drop from the PS through the APP's entering the K3.
> This would check the accuracy of the K3 volt-meter as well.  I don't 
> remember what it looks like in the vicinity of the APP's.
>
> The next best thing we have is the 12V jack, but I think that has two 
> diodes in series to it.
>