I'm making progress, but it's two steps forward and one back,,,
I now have the K3/0 controlling the K3 over my LAN with good audio and all functionality (that I have tested so far).
Problem is now that the K3/0 freezes every 4.5 to 5 minutes, then resumes normal behavior after a 30+- second pause. The red and yellow light on the AUX/MIC port of the RRC-1258 MkII Control come on during the freeze and the red light goes off when it resumes normal behavior.
I suspected the router so I eliminated that variable by connecting both RRC boxes using a crossover ethernet cable. Same behavior.
I then suspected a power supply problem since the former owner used a 12 volt wall wart to power BOTH the RRC box and the K3/0. Seemed a bit much so I put the K3/0 on my 35 amp supply. No change - still freezes every 4.5 to 5 minutes and resumes about 30 seconds later.
A possible clue: if I adjust anything on the K3 (the Remote), the K3/0 (the control) freezes for about 30 seconds and resumes normal behavior after about 30 seconds. And the red AUX light on the control box turns red just like the problem described above.
I'm out of ideas. Any help appreciated.
73,
Ron N6EE