Thanks for all of the responses.   A bit more tinkering and the 'magic' turns out to be Duplex = 2, linktolink = yes in rpt.conf, and not sure it matters but duplex=1 in simpleusb.conf. Maybe that was obvious in some part of some documentation, but, often head-to-wall interface is part of the solution. Now to get the RA-35 and/or RA-40 and/or the stellar DFM PiHat interface setup for the repeater chassis of interest and make more.    3. AllStar as Repeater Controller Connect to Duplex Hub       (Jim Aspinwall No1PC)   4. Re: AllStar as Repeater Controller Connect to Duplex Hub (Mike)   5. Re: AllStar as Repeater Controller Connect to Duplex Hub       (David McGough)    7. Re: AllStar as Repeater Controller Connect to Duplex Hub       (Jim Aspinwall No1PC)   8. Re: AllStar as Repeater Controller Connect to Duplex Hub       (Brett Friermood)   9. Re: AllStar as Repeater Controller Connect to Duplex Hub       (Kevin Babich)   10. Re: AllStar as Repeater Controller Connect to Duplex Hub       (ARS W5OMR)