Hi Gerry,
I didn't know that anyone actually used that feature, I thought it was more of a gag, or something
you may use when portable. I tried it once with my K3 when I got it a few years back, but never
considered it to be terribly useful. I may find it more useful on my KX3, since that is used only
portable, however I am not normally a data mode user.
I just looked it up in the K3 manual. Sending can not possibly work, since it requires using the K3's
internal keyer. Sending over the RRC uses the key input as an external keyer.
As far as decoding is concerned, I am not home this week and can't try it out for you over the network
until I get a chance this weekend or early next week before I leave for Dayton. Maybe someone else
can check in the meantime. If this doesn't work, it may be documented somewhere on the Elecraft
reflector.
73,
Mitch DJ0QN / K7DX