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Right Angle RG6 BNC Connector - The right answer?

2080 Views 6 Replies 2 Participants Last post by  RLDWV, 
RLDWV
About 6 years ago, in the early stages of starting my basement HT, I needed to run cable to my ceiling-mounted projector location before the sheetrock went up. I ran a fairly high-end VGA cable (which I use now) and five RG6QS cables into the enclosure (for future-proofing - Hah!). Up until now I've run everything through my PC, so the VGA cable has sufficed. Yesterday I got an HD STB from Comcast, and I need to get a component HD signal to the PJ. The problem is that there isn't a lot of room behind the PJ where the connectors are, and I'm worried about bending the cable too much (not sure about the minimum bend radius). What seems like an obvious answer to me would be a 90 degree angle BNC connector. They're as rare as hen's teeth, apparently, and I can only find one vendor who carries them and they look to be crimp-on type. So, my questions would be:

1. Am I worrying needlessly about the bend radius of the RG6?

2. Will a BNC "T" connector with a terminator do the same thing? (not even sure if it applies, but we used to do that with thinnet ethernet)

3. Is there an obvious answer here that I'm too dim to see?



Thanks in advance,

Bob
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C
You should be able to safely bend the cables until if feels like they're starting to crimp or buckle.


The BNC right angle connector should be fine. BNC is good to several hundred MHz so even if there's a little loss in the connector it shouldn't affect the video.


You can also use a standard BNC cable connection with a 90 degree male-to-female adapter such as http://www.shopjubilee.net/itm00499.htm .


A BNC "T" connector is not the best solution although it should work. But don't terminate it since that, along with the projector termination, will give a 25 ohm load to the cable driver. The unterminated end is too short to give you a problem at video frequencies.
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RLDWV
Excellent, thanks! I was just starting to look at those 90 degree male to female adapters.


Just *One* more question
How critical is it that the three component cables be exactly the same length? I think I got them to within a half inch of one another, but I can't guarantee much better than that. Thanks again!


Bob
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Quote:
Originally Posted by RLDWV /forum/post/14108553


Just *One* more question
How critical is it that the three component cables be exactly the same length? I think I got them to within a half inch of one another, but I can't guarantee much better than that.
Click to expand...

More than adequate. The transmission speed in cable is less than 2ns per foot so a half inch is a fraction of a ns. It takes at least 7ns of difference between the component signals to be noticable on an HD display.
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RLDWV
Good deal! I was worried that I would go to all that hassle and still have to buy a premade cable, tear up the ceiling, etc. Thanks again!


Bob
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Quote:
Originally Posted by RLDWV /forum/post/14110269


Good deal! I was worried that I would go to all that hassle and still have to buy a premade cable, tear up the ceiling, etc.
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Only if you want to go HDMI sometime in the future.
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RLDWV

Quote:
Originally Posted by crutschow /forum/post/14110880


Only if you want to go HDMI sometime in the future.
Click to expand...

Yeah, I figure that just as I'm doing the last 180-grit sanding of the massive drywall patch on my ceiling the industry will announce the new follow-on wiring technology that will replace HDMI.
- requiring all new cabling, of course. I'd put in conduit if I didn't have to drill through 10 floor joists.
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