[Elecraft] K3 Key Input

[Ken K3IU]

Just measured mine at ~4.9 VDC open circuit.
73, Ken K3IU

Brett Howard wrote:
> Being that I'm not around my rig I'm using the schematic as a reference
> after searching the manual and not finding what I need. 
>
> The Key input looks like if its enabled its got +5V on the port that
> needs to be able to be sunk to ground.  
>
> Am I reading that right?  Has anyone seen this in another area
> documented and/or verified this with a meter?
>
> Thanks much
>
> ~Brett
>
> PS:  I'm asking as I'm wondering if I should order the WKUSB kit or go
> ahead and spend the WKUSB-HV kit which can switch units that have 3.3V
> or less on the key in jacks.  
>
> Thanks much...
>
>
>
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