Dave,
The times are short and hard to measure, but there doesn't seem to be much variation in the times.? TX button to K2 transmit is almost instantaneous.? RX button to receive mode is a little longer but less than a second.
I assume you mean the "interrogation" checkbox.? The interval is 200.? Earlier today, I tried 500 and 800 with no noticeable change in the symptoms.
73 de Benjy AC4XO