¡°I'd like to alternate between using the keyer and the straight key without changing connections¡¡± ¨C try tying the straight key to either of the paddles.*
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¡°¡or firmware settings¡± ¨C this is the ¡°good luck with that¡± part, I think.
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*I have found the above solution quite workable.? It takes about 5 seconds to choose the keyer menu and change to ¡°straight key¡± or ¡°iambic,¡± and no changing of connections. Maybe this could work for you?