[Elecraft] Keyer weighting

[John Oppenheimer]

The K2 and K3 have near perfect equal key ON/OFF delays. Therefore, the
K3 and K2 will not normally need external keyer delay compensation.

The KX3 (measured with MCU 1.50 / DSP 1.21) has about 8 ms key ON to OFF
delay. The delay is for both the internal and external keyers. (Breakin
mode, XMIT not enabled)

The KX3 weight control can be used to compensate for the internal keyer
delay, though is speed dependent and runs out of compensation above
about 25 WPM. At 20 WPM with the KX3 Weight set to 1.15, the resulting
transmitter output weighting will be about 1:1.

For the KX3 with an external keyer, set the delay to 8 ms.

John KN5L