I'm having a difficult time troubleshooting MRF-350. Using MX-980, devices are set for IR & RF for initial set-up and test. No issues with 980 and IR. ID numbers of 980 & 350 match. Connect MRF-350 with RFX-250. I tested environment for stray RF and no lights or flickering on LEDs. When buttons on remote pushed, the LED on 250 lights up, but status light on 350 does not. Power LED on 350 is lit. I have (2) RFX-250s and have swapped them and (4) configurations of cables. If I pull/reconnect 250 cable out of socket on 350 with power on, the status LED briefly flashes; so I know it works. All units are in a test mode within several feet of each other and not installed remotely. I have not tweeked Output Levels yet, but I don't see where that would make a difference.
I can't think of what to try next? Any help is appreciated. Thank-you.

How do you have the RFX250's connected to the MRF350? Have you tried using just one RFX250 using the supplied mini-to-mini?

Yes, I have tried each 250 individually (I have not tried both together, figuring that if one doesn't work, why would two?), and every cable config (mini - mini, mini-bare, bare-mini)

Scanr

You missed one cable config...bare to bare. Be sure to note that the cable pinout is not straight through when using the molex connectors on both ends.

Also note that when using the mini plug that you have to push it all the way in. Some people are pushing them in and thinking it's seated properly when it is not.

Thanks, I will try bare/bare. I did push plug all in and tried 1/2 out. I need to have plug 1/4 way out on 250 side for power and RF leds to light.

Scanr