My son bought a house, where the cable TV box is located in a closet.
From that cable box, the prior owner ran a ~25 foot hard wired, 3
conductor RCA composite interface to the wall hanging TV across the
room. There is now, no easy access to run a HDMI cable to that TV
location. As expected, that RCA connection does not provide optimum
Is there a solution whereby he might connect from the cable box (in
the closet) to a TV maybe 25 feet away with HDMI performance? Might
there be a wireless I/F option?
Thanks, for all recommendations!
On Saturday, May 7, 2016 at 6:13:52 PM UTC-4, Dave C wrote:
Googling for wireless HDMI extender shows they exist. Are you sure
it's that difficult to run a cable? If you have access from either
a basement or attic it shouldn't be too hard. Certainly would be
less expensive assuming you can DIY and more reliable too. If you
can't go straight there, any possibility of relocating the cable box,
the going from the cable box to the TV? How is he changing channels
on the cable box in the closet?
Like T says, if the attic is above that room, you can easily find the
top plate of the wall on which the tv hangs, drill through it and run
the cable down to behind tthe TV. If there are fire stops they make
flexible drill bits with which you can drill down from the attic or up
from a hole in the wall behind the tv. The bits have a hole in both
ends for pulling a wire after them. And they make wall plates now
that are just holes for the wires to pass through with pretty little
awnings. So you don't have to have two more connections at the wall.
If no attic access, but an unfinished part of the basement is below
that room, you can make a hole in the wall behind the tv and use a
flexible bit to drill down through the bottom plate into the ceiling
of the basement. Try to figure out where you'll come out so you
don't drill into something important, and mark on the bit shaft an
indication of just when the end will break through the ceiling. Then
go down and see what you'll hit next. I did this a few times and the
only problem was when it came out in a floor joist. But it was close
enough to the edge that I found it.
If you have no attic or basement access, you might be able to run a
snake through the ceiling** of the TV room and hook up with another
snake behind the tv, but that gets awfully complicated and difficult.
I only used two things once when I knew within 6" where the other
snake (or wire?) would, and it still took a long time to catch it.
OTOH, the extra 40 minutes put in has led to 33 years of trouble-free
operation. **Or even the ceiling of the basement.
If you tug on the cable, does it move on the other end? You might be
able to tape an HDMI cable to the existing coax and pull it through.
Don't be stingy with the tape. Make a "bullet" on the end you are
pulling through so it won't hang up. Worst case is it pulls apart in
the wall and you have nothing.
I run a 40 foot HDMI cable from the basement to the TV in the den with no
problem. I was able to drill a large enough hole to accommodate the larger HDMI
cable. Don't if you can do that at your location.
Another possibility would be to move the cable box right next to the TV and run
a short HDMI from the box to the TV. This might (or might not) require the cable
box to be visible.
On Sat, 7 May 2016 20:05:37 -0400, Arnie Goetchius
There is no hardware reason why HD TV will not go down coax, it came
to you that way from the cable company but the weakness of the NTSC
composite interface is a weak link.
If it was the 3 coax component (RGB), no problem.
The easy out is pulling in an HDMI cable.
On Saturday, May 7, 2016 at 8:52:47 PM UTC-4, firstname.lastname@example.org wrote:
I think we need to back up. He said he has "3 wire composite video" now.
There is no such thing. Does he mean he has 3 wire component video?
If so, the picture quality of that versus HDMI is negligible. At least at
reasonable distances. If you go far enough, HDMI being digital could make
I suppose that may be true but a composite cable set is 3 wires, a
component set is 5 (2 for audio)
Component will actually carry a picture farther than HDMI unless you
have an inline booster along the way. My wife had 100' component cable
sets in the country club because they could not duplicate the
performance with HDMI even using boosters.
I think it's 2 shielded cables (audio and video, maybe with a common
shield). The third wire is the shield. This cannot be used for component
video, you'd need one more cable (plus 1 or 2 for audio). Component
video / audio cable assemblies have 5 cables (Green/sync, Blue, Red,
Left, Right) and take up more space than a HDMI cable.
One of the cables could be converted to RF (use F-to-RCA plug adapters),
but it wouldn't be good quality.
Having been composite, the signal is already degraded. Putting that on
HDMI can't improve it.
I like the idea of using the existing cable to pull a new one. Either
pull HDMI or pull RG59 and move the cable box. Wireless solutions are
I use some RG59 for camera feeds and such but I agree if you are
talking about TV cable, use quad shield RG6. The labor is worth more
than the wire.
You might even be able to talk the cable guy into making one up with
snap and seals and giving it to you. The sat guy made me up a few the
last time he was here just trying to make my picture a little better.
On Sat, 07 May 2016 23:18:29 -0400, email@example.com wrote:
I myself don't know but I presume it's correct since it's on the
Some of what it says it what you say, 59 is good for CCTV, but it says
rg6 is better even for tv antennas.
I wish I remembered what I used. I used to get a perfect picture in
the office, but it went down 3 notches and then up 2 notches. Some
of that cable still shows, because I just drilled a hole in light
switch plate and ran it through that, then put the end on afterwards.
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