[Elecraft] K2 CW monitor

[Rick Dettinger]

IIRC Island Keyer folks make a true sine wave practice oscillator kit
that is pretty cheap.  I wonder if it could be used in place of the K2
side tone?

- Keith N1AS -
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I have thought about this, however, the problem seems to be how do you get
the external sidetone to the headphones that are plugged into your rig.  It
would probably work with speakers.  I would think the AF1 would clean up any
sidetone.  My Logikey SCAF does that for my K1 sidetone.  It sounds really
harsh without an external filter.  The rev b mods I made to my K2 make a big
difference.  It sounds nice now.  The best sidetone I have used is the twin
T audio osc. used in Oak Hills radios.  It is a simple circuit that could be
added to most any QRP kit.
73
Rick Dettinger
K7MW