We can only transmit on one radio at a time through the FHMUX.
The FHMUX switches between radios hundreds of times per second.
The FHMUX can only operate for up to 24 hours, then it must be shut down or it will fail.
If the FHMUX does not work, the problem is probably with the cables.
Make sure you have the needed FHMUX manuals to get it up and running.
Rumor Five There is no advantage gained by using the FHMUX.