KD6GDB here, I got 5 nodes on a single supermirco 1 RU server. 4 of them are currently GM300 motorola radios using the DMK-URI fob and one of them is to a Doug Hall RBI-1 kenwood remote base also using the DMK-URI fob. I discovered the hard way that you need a PCI usb card (not a hub) that can support USB2.0 (default acid build not yet supporting usb3.0). Eveything starts and runs fine and can address each device for audio tuning but.... as i have written about out here before i have a strange problem with intermitten transmitt (recieve on all radios is very relyable). At first i thought that it was a bandwidth limitation but the server is an eight core server with 24gig of ram and top shows that i am never using more than 0.50 percent of resources avalible. i am convinced that it is something in the configuration with the GM300 radios. Pursuant to U.S. Code, title 47, Chapter 5, Sub-chapter II, ß227, "Any and all non-solicited commercial E-mail sent to this address is subject to a download and archival fee of $500.00 U.S.". E-mailing denotes acceptance of these terms. From: "app_rpt-users-request@ohnosec.org" <app_rpt-users-request@ohnosec.org> To: app_rpt-users@ohnosec.org Sent: Tuesday, January 20, 2015 2:03 PM Subject: App_rpt-users Digest, Vol 71, Issue 38 Send App_rpt-users mailing list submissions to app_rpt-users@ohnosec.org To subscribe or unsubscribe via the World Wide Web, visit http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users or, via email, send a message with subject or body 'help' to app_rpt-users-request@ohnosec.org You can reach the person managing the list at app_rpt-users-owner@ohnosec.org When replying, please edit your Subject line so it is more specific than "Re: Contents of App_rpt-users digest..." Today's Topics: 1. More than 4 nodes on a PC (Cole Cunningham) 2. Re: More than 4 nodes on a PC (Keith Goobie) 3. Re: More than 4 nodes on a PC (Cole Cunningham) 4. Re: More than 4 nodes on a PC (Keith Goobie) ---------------------------------------------------------------------- Message: 1 Date: Tue, 20 Jan 2015 11:30:34 -0700 From: "Cole Cunningham" <colecaz@gmail.com> To: <app_rpt-users@ohnosec.org> Subject: [App_rpt-users] More than 4 nodes on a PC Message-ID: <020601d034df$2e8b8030$8ba28090$@com> Content-Type: text/plain; charset="us-ascii" We're looking at app_rpt for sites with up to eight radios, all currently controlled by a RLC-3. Our initial approach is to use a PC and try to run all eight radios off of it. For testing we're using modified fobs running on USB 2.0 ports and when we try to use more than four, things break up, sound bad, etc. I've found that CentOS 5 that comes on the ACID disk doesn't support USB 3.0, which we were thinking might offer more bandwidth and handle the added fobs. Has anyone used this PC based approach for 4+ nodes using USB fobs? Or could I get some suggestions as to how to approach the implementation of eight nodes without using fobs or the discontinued 4 port PC card? Or is it a viable solution to use a BBB for every radio and connect them all with Ethernet switches and treat each BBB like a separate server. Any ideas are appreciated Cole AA7RD