Review on 🔌 NE-SE01-020Q Passive Ethernet Extender Over Coax by Seco-Larm Enforcer by Jeff Payne

These guys can be put to work. I bought three pairs of these because the genius who wired my house wired my Category 5 phone lines and cable TV to my house. Also, none of the phone jacks were where they would be useful, and the cable TV outlets were right where I wanted to connect to the network. You can imagine my frustration when none of the three lines worked. No connection check, cable protection or even prayer helped. I expected one start or maybe even two to fail, but all three? So I set to work, either to prove they were utterly useless or to find a way to get them working. I set up a best-case scenario test rig with just two feet of coax cable connecting a pair of these devices. My theory at this point was that they were of such low quality that no pair had two working devices and I was determined to find two that would work and get at least one line working. What I found in my testing is that they aren't so much low quality as they are finicky - sensitive enough to be polite. The slightest loose connection, imperfectly aligned cables, etc. would have knocked them out of the game. What increased the chance of failure were the BNC adapters needed to connect the end of the BNC coax to the CATV coax. Just the right gap, narrow enough but not too narrow... I've also found that just one device connected incorrectly can wreak havoc on the entire network. The router routed incorrectly or new devices didn't get IP addresses - all crazy. Eventually I got all three lines and figured out how to do it. I first disconnected all NE-SE01-020Qs from my network. I bought an ethernet switch (a smart hub, although a dumb one would work too) and a coax terminator at a local hardware store. Plugged in the power cord of the ethernet switch, then followed the following procedure each time it booted up: 1) Connect the ethernet patch cord to the switch. The port LED on the switch should remain off. 2) Connect the other end of the connection cable to the Ethernet port of the NE-SE01-020Q. The port LED on the switch should light up. 3) Connect the BNC adapter to the coax end of the NE-SE01-020Q and check the connection by connecting the coax cable terminator to the other end of the adapter. The port LED on the switch should go out. If the port LED does not turn off, check the adapter or the NE-SE01-020Q. There is no point in proceeding if the port LED is not off. 4) Remove the coax cable terminator and connect one end of the coax cable instead. If the other end of the cable is not connected, the display should stay on. To test a coaxial cable, insert a terminator into the free end and the light should go out. 5) Now that one end is working, perform the same procedure starting at the other end of the track. In the end I realized that most of my problems were just caused by a faulty BNC adapter. Revain calls them "BNC Male to F-Female RF Coaxial Connectors". I also had a ground wire attached to a length of my coax cable, but it wasn't grounded. After making sure my ethernet switch was grounded it worked. I hope that either the manufacturer or the importer understands this and writes appropriate manuals and manuals for these devices. With the right guidance, they can be very helpful.