If I want both my broadband modem/router, and Cable TV in my new office about a 30' cable run from where cable enters the house what do I need to do?

Can I just use two splitters in my system to avoid an extra coax run? I need to split where cable enters house to go to other TV's in the house, and then send one of the splits to the office/cable modem. If I want cable TV in the office should i run a second cable from the splitter into the office or can I split a second time in the office and send one split to the cable modem, and one to the office TV?

I hope the question is clear, can I split a split. My concern is not so much the office TV signal as it is the Cable modem.

Thanks for the help.

Adding a splitter in the study will work fine. But conventionaql wisdom is it might cost you some broadband speed.

I just converted from fixed-wireless to cable broadband. The cable guy said they like to take the broadband drop off the first split and make that just a 1x2. Then take all of the TVs off the other half of the 1x2. He said this was to ensure they got the best speed on the broadband drop. But he also said that it would work regardless, and if I went that route that we would just see what happened.

As it worked out, I didn't need to do it. But it is certainly the easiest thing to try. Run a broadband speed test to get a baseline (Mine is about 4000 down and 375 up) Add a spliiter in the office and then rerun the speed test.

Cable Guy also said I could add an in-line amplifier if I had any problems. There was one in the fixed-wireless drop, so I moved it to the main incoming line. I saw no change to TV or broadband.

---

Don't ask who the bell's for, dude. It's you.

I used to have cable and when it was installed the first thing the installer did
was upgrade my lead into the house and remove my new splitter and freshly made up cables I had just crimped myself.

He then got me a proper 1000 Mhz splitter and remade my connections with those
fancy pressure fit connectors (via tool - what do you call these things)

He said that improper splitters and old style crimp cables were his biggest
reason that they had to do service calls and company (InsightBB ) wanted it
done correctly the first time. Cool

All that said I guess what I'm saying is that the cable modem is more effected by bad install
If you already have a proper run no harm in trying with a 1000 Mhz splitter not a 700 or what ever the old ones are

If I was in the process of pulling one and had access I would pull two separate lines.

Cable in cheap but labor and downtime are expensive - cost the same to pull two IMHO

---

The easiest thing to do is to call your cable company and ask them to run a line into the office and test it to make sure that it's got decent signal strength.

Many cable companies will do it for free.

I had a similar experience as lafinfil. The first time I had the cable guy come out to help with weak signals, he was amazed at how many times the previous owners split things off. Fortunately, we had the inside wiring maint. plan that covered him recrimping all the connections, upgrading the various splitters with better quality ones. He even added one of their amplifiers where the line came into the house. The last time Comcast upgraded their cable modem speeds, the signal through the amplifier was actually too strong so they had to come back out and do some more fiddling with the signal strength and removed that line from the amplifier.

I should clarify

They upgraded my line in and provided a splinter and run to my modem
which was basically up through the floor from the basement - that was free

They left all my TV runs as is - older style cable and connectors

---

On connections...

The worst are the slide on connections.

Cable companies are required by FCC regs to test and fix signal leakage since the frequencies used inside the wires are the same as some other folks (FAA airplane signals, for one) use outside the wire. They drive around and fly around with radio direction finders, looking for signal in the cable frequencies. If you have leakage and don't let them fix it within a deadline from the time of detection (I think a week?), they will pull your plug. If they can't show they are doing this maintnenace properly, the FCC will fine them big time.

Turns out we had leakage at our house, and TW sent a guy out to diagnose the problem. Every leak was assoicated with a slide on connection. He built new cables with high quality screw-on connectors. All on TW's tab.

TW Guy told me that affluent suburban neighborhoods like mine are just covered with leaks, because we have so many spliiters and thus connections.

The absolute worst, though, was a dorm at Texas Southern. Many students were simply stripping the cable back to the shielding and conductor, jamming it into the TV jack and taping it on. It was so bad that they had every TW guy and contractor out there... even secretaries, in order to get the mess cleaned up by the deadline and not get an FCC fine.

---

Don't ask who the bell's for, dude. It's you.

Be sure to minimize the number of splits. Every time you split, you cut the signal strength in half, which can degrade the picture quality on the TVs and possibly the modem signal. You can always try splitting things to make your cable runs convenient then compare before and after picture quality. If it still looks OK, you're good to go; if it looks worse, you need to either cut out splitters or get an amplifier.

Do not put an amplifier in the modem run - another potential problem

---