In article ,
"RST Engineering" wrote:

With four mic channels coming in and two PTT switches on the front two
control wheels, it is quite easy to mute the intercom when somebody hits the
PTT switch (either one) and then logically decide which of the two PTT
switches are active. You can optionally prioritize the PTT switches or if
both of them are active, both mic audios will be linked to the transmitter
as well.

PLEASE!!! Make it six place! Switchable/configurable, however.
Those of us who rent Cherokee Six's need something that will serve all
the seats.