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<blockquote data-quote="RonD" data-source="post: 1230853" data-attributes="member: 117536">mm, on this you are off by a factor of 2, a USA OTA ATSC physical channel is about 19.2 Mbps. I always round up to 20 so 4 HDHR tuners is about 80 Mbps. This is pushing the edge 100 Mbps Enet, if other network traffic did copies to the TV server you might start seeing problems. Since wired ethernet is full duplex with independent TX and RX, a 100 Mbps Enet could receive 80 and send 80 without seeing problems, BUT this might be enough to cause problems. Fired up MP1, started 4 recordings using 4 different HDHR tuners, about 78 Mbps receive bandwidth. My TV server has a 1 Gbps ethernet connection. In my SF Bay area the 5 major networks show the following17.6 Mbps KTVU (Fox)18.5 Mbps KPIX (CBS)19.3 Mbps KGO (ABC)19.1 Mbps KNTV (NBC)15.7 Mbps KBCW (CW)The HDHR tuners have ways to do &quot;command line&quot; testing of tuners and network traffic. You need to type commands to setup tuners/channels, start tuners/test and look for errors. With 4 tuners you need 4 command line windows.I mention this because I also had weird HDHR problems when I added another HDHR with 2 tuners to my wired ethernet setup with 2 wired 1 Gbps ethernet switches, 4 total tuners. I did command line testing, saw &quot;network errors&quot;, and ended up changing how I had the HDHRs connected. Moved all 4 HDHRs to the same ethernet switch and the 2 TV Servers (Beyond TV and MP) to the same switch. With that setup my HDHR problems went away.Picture showing 4 active HDHR tuners and 78 Mbps ethernet traffic.</blockquote>

[QUOTE="RonD, post: 1230853, member: 117536"] mm, on this you are off by a factor of 2, a USA OTA ATSC physical channel is about 19.2 Mbps. I always round up to 20 so 4 HDHR tuners is about 80 Mbps. This is pushing the edge 100 Mbps Enet, if other network traffic did copies to the TV server you might start seeing problems. Since wired ethernet is full duplex with independent TX and RX, a 100 Mbps Enet could receive 80 and send 80 without seeing problems, BUT this might be enough to cause problems. Fired up MP1, started 4 recordings using 4 different HDHR tuners, about 78 Mbps receive bandwidth. My TV server has a 1 Gbps ethernet connection. In my SF Bay area the 5 major networks show the following 17.6 Mbps KTVU (Fox) 18.5 Mbps KPIX (CBS) 19.3 Mbps KGO (ABC) 19.1 Mbps KNTV (NBC) 15.7 Mbps KBCW (CW) The HDHR tuners have ways to do "command line" testing of tuners and network traffic. You need to type commands to setup tuners/channels, start tuners/test and look for errors. With 4 tuners you need 4 command line windows. I mention this because I also had weird HDHR problems when I added another HDHR with 2 tuners to my wired ethernet setup with 2 wired 1 Gbps ethernet switches, 4 total tuners. I did command line testing, saw "network errors", and ended up changing how I had the HDHRs connected. Moved all 4 HDHRs to the same ethernet switch and the 2 TV Servers (Beyond TV and MP) to the same switch. With that setup my HDHR problems went away. Picture showing 4 active HDHR tuners and 78 Mbps ethernet traffic. [/QUOTE]

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