[Elecraft] RE:split indicator for K2

[W3FPR - Don Wilhelm]

Folks,

I just added a hi-current LED to my K2 as a SPLIT/RIT/XIT indicator.  Adding
the emitter follower transistor was a cinch.  I used a 2N2907 PNP
transistor, connected the base where the cathode of the lo-cur LED would
have been, connected the collector where the anode of the lo-cur LED was to
be connected and connected the hi-current LED between the emitter and
ground.  It worked FB and was plenty bright.

73,
Don W3FPR

> -----Original Message-----
>
> Hi Rick:
>
> IF you attempt this (though I suspect you're kidding), be aware that the
> LED specified for the SPLIT/RIT indicator is a Hi-Eff (e.g. very low
> current) device. If you (or anyone else) use a regular LED, you will have
> to add a driver transistor in order to allow the LED to draw more
> current.
> The Hi-Eff LED only draws 2 mA of current in the present circuit design.
>
> Have fun, kidding or not.
>
> Tom N0SS
>
>
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