The "DECA First Look" looks great, here's a draft of some similar info that I had put together maybe for a future DBSTalk post as people have questions: Overview The DirecTV Ethernet Coaxial Adapter (DECA) enables DirecTV to create a DirecTV Coax Home Network. This is DirecTV's implementation of Multimedia over Coax (MoCA). The DirecTV Coax Home Network utilizes the frequency range 500-600MHz within a DirecTV SWM environment, to enable Ethernet (RJ-45) connectivity via Coax to DirecTV receivers. Typically there will be one Coax Network within a home, but there can be multiple Coax Networks, one per SWM port, all bridged to the Home Network. Coax Network - Prerequisites DirecTV SWM-enabled environment SWMLine Dish or SWM-8 MultiSwitch(s) The SWM environment allows for the 500-600MHz frequency range needed for the Coax Home Network. DirecTV SWM-capable and Ethernet-capable (RJ-45) receiver(s) DirecTV H21/H23 HD Receiver(s) or DirecTV HR2x HD DVR Receiver(s) Home Network with at least one open RG-45 interface Coax Network - New Hardware 1 SWM Filter, to separate the SWM from the Coax Network. 1 DECA for connectivity to the existing Home Network. Power is supplied by 1 DECA Power Inserter (PI). 1 DECA for each DirecTV receiver. Power is supplied by the receiver. Possibly an additional or larger SWM-approved Splitter to provide Coax connectivity. Special Note: Currently the HR20-100 requires it's DECA to be powered by the secondary tuner input, or a separate PI, while the satellite signal is passed to the primary tuner input. Step-1: SWM / Coax Network Separation The SWM Filter must be installed after the SWM output, and prior to the first splitter. Typically the SWM Filter will be installed at the SWM PI output, or at the SWM port#2 output. Installation of the SWM Filter should have no effect on the existing SWM environment. Step-2: Home Network Connectivity / IP Addressing In order to provide Coax Network connectivity to the existing Home Network and the Internet, there needs to be a "network" DECA installed. The "network" DECA will have three connections: The "Ethernet" RJ-45 interface will be connected to the Home Network The "Sat Rcvr / Power" pigtail will be connected to the power inserter (PI) The "Wall outlet" F-connector will be connected to the SWM environment All network traffic from any receiver on the Coax Network, to any receiver outside the Coax Network or the Internet, will pass through the "network" DECA. Installation of the "network" DECA should have no effect on the existing SWM environment. Note: Instead of installing a "network" DECA, it should be possible to have a DECA-attached receiver with two RJ-45 ports provide the Home Network connectivity by connecting the top RJ-45 port to the DECA and the bottom RJ-45 port to the Home Network. This configuration may be unsupported by DirecTV, and you must be very careful to not create a loop condition whereas there's more then one connection from the Coax Network to the Home Network. This will also cause all network traffic to the Home Network to pass through the DECA that is attached to the receiver providing the Home Network connection, which may affect the network performance of this receiver. Step-3: Receiver Network Connectivity In order to provide Coax Network connectivity to a DirecTV receiver, there needs to be a "receiver" DECA installed. The "receiver" DECA will have three connections: The "Ethernet" RJ-45 interface will be connected to the DirecTV receiver port#1 (top) The "Sat Rcvr / Power" pigtail will be connected to the DirecTV receiver The "Wall outlet" F-connector will be connected to the SWM environment After installation of the "receiver" DECA and restarting the receiver, the receiver should have full network connectivity, just as if the receiver was directly connected to the Home Network. Notes: Due to the Coax Home Network's use of the 500-600Mhz frequency range, diplexing of OTA into the SWM environment is not supported. DECA-networked receivers can be inter-mixed with direct-attached networked receivers within the home. Summary After the proper installation of the Coax Home Network, each DECA-attached DirecTV receiver should perform very similarly as if the receiver was directly RJ-45 connected to the home network. DirecTV Coax Home Network Example - Pictorial View Click on thumbnail below.