[Elecraft] [KX3] KX3 Supply Voltage reading low

[Arlen Fletcher]

Thanks Don and David for spending all the CPU cycles on my problem! It turns out the 2V drop was due to operator impedance - or a loose nut behind the controls, etc., etc. I was indeed monitoring the internal battery voltage instead of the external battery. {heavy sigh} So, now I’ll go back to my shack and ponder my ignorance for awhile.

Thanks again to everyone that took time to read and/or respond.

73

Arlen, AA7F

On Aug 16, 2014, at 12:25 PM, David Anderson <gm4jjj at yahoo.co.uk> wrote:

> Don & Arlen,
> 
> Yes it has two voltage monitoring settings, PS and then BT. 
> I have a power supply connected, PS is 14.2V  and BT is 10.5V
> I disconnect power supply and PS is 10.0V and BT is 10.0V
> 
> Hope that clarifies.
> 
> 73
> 
> David Anderson GM4JJJ 
> 
>> On 16 Aug 2014, at 00:38, Don Wilhelm <w3fpr at embarqmail.com> wrote:
>> 
>> 
>> As far as I know, there is no selection for observing the battery voltage vs. the external voltage.  The displayed voltage should be the higher of the internal batteries or the external batteries. There is a diode drop, so expect a reduction of 0.3 volts from the measurement at the battery.