[Elecraft] What is the TX DLY of a KX3?

[Bob Wilson, N6TV]

What is the fixed delay between KEY OUT going low and RF coming out of a
KX3?  The K3 has a CONFIG:TX DLY setting, but I find no equivalent in the
KX3 manuals.  The concern would be RF hot switching if the external
amplifier relay is too slow.

>From the KX3 manual:

"The keyline output goes low during transmit, and can be used for
transmit/receive switching of linear amplifiers and transverters."  The TX
Delay does not appear to be documented.

(KEY OUT on a KX3 is the RING contact of the 2.5 mm stereo connector
labeled ACC2).

73,
Bob, N6TV