I see now that you said that both RRC's indicate a solid connection and no errors, so the problem is in that
case not a problem with the internet.
Is the frequency that the control K3/0 is displaying the correct one on the radio side? That would let us narrow
down the problem.
I have seen this a few times where it was not indicating the correct frequency, could not
control, but audio was coming through. This was caused by a serial connection problem, e.g.:
- CAT cable was not connected
- baud rate on an RRC COM2 was incorrect
- baud rate in one or both of the K3's was incorrect or didn't match the RRC's (menu RS232 setting)
- One of the RRC's COM2 setting was set to use USB (should be NO)
I do not understand your comment about COM5. The way this thing works is that a "real" serial cable connects
the K3 (K3/0) with each RRC's COM2 port. The cable on the control side is a null modem cable, the one on the
radio side is straight. The control PC's USB port can be used to control the system using CAT, but it is completely
independent upon how the two sides talk to each other.
73,
Mitch DJ0QN / K7DX