If you take some precautions the electrical isolation shouldn’t be a problem. It is often very simple – a small filter is all that is needed in most cases. Put the blame where it belongs, shall we?īTW, if you tell that amateur radio operator about the problem, I am pretty certain they will be happy to help solving it. certifications require that the TV accepts the interference … Despite the fact that the HAM is doing nothing wrong and the FCC/CE/etc. However, a crappy TV with no/poor bandpass filter and poor shielding will happily get overloaded with a nearby strong signal (even on a frequency outside of the TV bands) and boom – “bad HAM causing interference”. I would rather bet that the reason for “interference and noise” is the crappy consumer gear that is not shielded and often lacks any filters for out of band strong signals.Īmateur radio operators (HAMs) are extremely careful to not cause interference outside of their allocated frequency bands because there are large fines for that and in the worst case they could even lose their license. Not sure exactly how it works but it does have its own power supply and I suspect it’s just some RF frequency translation hardware, with the smarts in the central controller. ![]() Many years ago, I stayed at a hotel where the Wifi was provided by a little Cisco box slightly bigger than a portable hard drive that goes between the TV and coax cable. Homeplug adapters can also be hacked to run over phone line and will coexist with analog telephones, but not DSL. * Homeplug adapters hacked to connect via coax using baluns (will not coexist with DOCSIS but might coexist with antenna TV – must use filters to prevent unintended emissions) * DECA – DirecTV’s version of MOCA that runs at 500-600MHz (will not coexist with DOCSIS and probably will not coexist with antenna TV) The above will coexist with cable/antenna TV and DOCSIS, with the exception that older MOCA adapters do not coexist with newer versions of DOCSIS. * 2.4GHz Wifi (3 20MHz channels or one 40MHz channel and one 20MHz channel) Here are the following budget friendly ways I can think of to operate a LAN over coax that will coexist with each other: I don’t think the $20 adapters will actually do a gigabit, although they will coexist with the Wifi over coax solution. Posted in Wireless Hacks Tagged Coax, router, wifi, wired Post navigation Here’s the proof it does work, and if you’re ever in a bind, this is how you make WiFi wired. Is it surprising that this worked? No, not really, but you’ve probably never seen anyone actually do it. That’s not bad for something that was cobbled together out of old parts and unused wiring. The entire thing worked, although testing showed it was only getting about 60 Mbps of throughput. ![]() With two WiFi antenna to coax adapters, simply connected the coax directly to a router set up to bridge Ethernet over WiFi. WiFi is also at much higher frequencies than what coax is designed for. Only one MIMO channel will be available meaning the maximum theoretical bandwidth will be 433 Mbps. WiFi is 50 Ohms, TV coax cable is 75 Ohms. Instead, simply made a few u.FL to F-connector adapters from u.FL to SMA, then SMA to F-connector adapters. The equipment to do this is expensive, and if you’re already considering running WiFI over coax, you’re too deep down the rabbit hole to spend real money. The correct way to do this would be to use a standard DOCSIS modem and become your own cable Internet provider. The solution was to mis-use existing 75 Ohm satellite TV coax that was just sitting around. ![]() Ethernet over power lines was an option, but there are amateur radio operators in the house, and they put out a bunch of interference and noise. WiFi would be the next obvious choice, the distance was just a bit too far for ‘regular’ WiFi links. You can use regular ‘ol twisted pair, or fiber, but in this case running new cables wasn’t possible. He recently had to distribute Ethernet through a building, and there are a few ways to do that. There’s no better evidence of that than ’ networking setup. If it’s stupid and it works, then it’s not stupid.
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