cablingdata-wiringtv-antenna
So I need to split the cable coming down from the aerial into 3 outlets. What's the best way of doing this?
I was thinking of using a 4-way splitter:
Would this be the best way with minimal signal loss. If worst comes to worst what booster unit do you recommend? ideally I prefer if I don't have to get onto the roof. We don't have the proper kit for it.
You normally want to use outdoor flooded cable (also called gel-filled) as it is designed to weather the elements. I have a few clients who have gone with outdoor flooded & shielded cable as they were worried about interference on the outdoor runs. Also look for UV-resistant cable if it's not going to be buried or otherwise enclosed.
As for Cat 5e versus Cat 6, for home use it probably won't matter as you most likely running 100/1000B-T Ethernet and it will run fine on both Cat 5e or Cat 6. If you want to try to future-proof your cable--or the price difference is negligible--you can go for Cat 6.
I believe it is splitting the signal, each output will have a specific loss associated. Some splitters will unevenly split the signal (commonly called a tap), which is handy to give a better signal to a longer run or to the cable modem. You can get a straight through connector at any HI store. That said, even these will have some loss of signal, just no where near as much as from a splitter.
Note: Common Insertion Loss per output leg on passive splitters:
3dB is 1/2 the signal strength, basically on a two way splitter, full power goes in, 1/2 comes out each leg as long as there is termination impedance on all (cable or terminator cap) ports.
Best Answer
Well, if you are going to split it 3-ways, buy a 3-way splitter not a 4-way. I agree with the comment from Mikes about buying a more expensive model if possible.
I would avoid a booster at all costs - power boosters add noise to the line - so yes you get a higher signal, but its noisier.
As far as minimizing signal loss, here are the top items to keep in mind: