[Elecraft] Re: K2 KBT2 Operational Question?

[wayne burdick]

Hi Allan,

On Mar 13, 2006, at 8:10 PM, Allan Bacon wrote:

> K2 with KBT2 installed.
>
> If the battery switch is turned off, and 13.8 volts in plugged into 
> the K2
> will the radio come on if the on switch in pressed? Or another way of
> asking, If I have the radio plugged in to external power and I turn the
> batter switch off, does that turn off the K2.

The battery switch only disconnects the battery. It has no impact on 
supplying power to the radio.


>
> With an old (4+ years) battery installed, and plugged into external 
> power,
> what would be the nominal reading off the K2's internal voltage meter? 
> On my
> radio #309, I only show about 12V, power supply is providing 13.8.

If the voltage on the K2's display reads 12 V even with the battery 
switch OFF, then either the K2's voltage monitoring circuit is in 
error, or your external DMM is.

If the voltage on the K2's display goes up to about 13.3 V or so with 
the battery switch OFF, but is 12 V with the battery switch ON, the 
battery is trying very hard to take a charge. If it gradually increases 
to 13.3 V or so over about an hour, the battery may be OK. But if it 
just sits at 12 V all the time, your battery may be unable to charge. 
In this case it should be replaced.

73,
Wayne
N6KR


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