Originally Posted by
GogglesPisano
If an airport is that busy they need a metering freq. Also, most of the time pilots (and controllers) who block each other don't realize they're doing it because two stations key the mic at the exact same time. How are they to know? Listening won't help. (Think about it.)
Speaking as a Center contoller only we know when somebody just flips the switch and starts talking. They are usually interupting somwhere between a control instruction and the readback. Happens quite often.
I've had pilots that have been on my frequency interupt asking about rides ahead
right after I issue a clearance to somebody else.