Video via mic cable

[Stoldal]

I was asked to help with a dance performance and they want a back stage video monitor.

The video source is about 400-500' way from the monitor. So my audio guy says that we can use a RCA to XLR and use 4-5 100' run of XLR mic cable.

First can that be done?

Second question, what is going to be better RG6 or mic cable, yes that may sound like a silly question.

I just don't want to tell him no thats not going to work, he want to know why it does not work.


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Part 2

What i plan to do is have one 400' or 500' run of RG6 cable, the signal is going to be coming from a RF modulator. Do i need amplifier.


Thanks!!

Matt Stoldal

[PadawanGeek]

I was wondering about that so I did a simple test adapting the video from my Playstation for XLR and then back again and it worked. However, it is not a good idea. The video signal coming thought looked a bit weird and sometimes when gray. Bottom line: Only do this if you can afford for the monitor to sometimes stop working and the video signal not to be its best quality. Only use this in a big big pinch.

[derekleffew]

As Pad said, it's possible, but not recommended. Try the 500' mic run, (preferably without actually running the cable), and if you don't like the results, use the RG-6. See this post.

[ruinexplorer]

I recommend ignoring the XLR, too much chance for signal problems. RG6 isn't that expensive and you will likely use it again. Yes, if you have one available, I would use an amplifier on that length of run for better quality.

[mbenonis]

I recommend the RG6 as well, but DON'T use an RF modulator! You'll get MUCH better results if you just send the composite signal straight down the cable (using a composite video amplifier if necessary). Composite video is 0-6 MHz and Ch 3/4 is at 60-72 MHz - you'll get less attenuation per 100' at 0-6 MHz.

To connect it up, just get F to RCA adaptors - a few bucks at your local ShadioRack.

[propmonkey]

could always go wireless. we have one for $50.

RadioShack.com - Home Entertainment: Accessories: Audio accessories: Wireless signal senders: 2.4GHz Wireless Audio/Video Sender for #15-126

[Stoldal]

Originally Posted by propmonkey

could always go wireless. we have one for $50.

RadioShack.com - Home Entertainment: Accessories: Audio accessories: Wireless signal senders: 2.4GHz Wireless Audio/Video Sender for #15-126

The problem with wireless is i will not have LOS.

i have about 1200' total of RG6 so that is no problem, I think that he just want to try it to see if it worked.

[incstlouis]

F to RCA Adapters $1.22/ea.

RG6 by The Foot, 500ft. or 1000ft.

[mbenonis]

Originally Posted by incstlouis

F to RCA Adapters $1.22/ea.

RG6 by The Foot, 500ft. or 1000ft.

Those RG6 prices seem about right. The best terminations to get are the Thomas and Betts Snap n' Seal connectors for RG6 Quad Shield (purple insert). Tri State Electronics sells them, among other places. They're a bit expensive but also not likely to fail. You'll need a tool to put them on as well as a coax stripper (believe me, for the $3-5 for the stripper you'll thank me down the road!)

[Stoldal]

ok, so i just found out that the video feed is going to be recorded, the video mixer is going to be at the end of the cable run, so i am going to get an amp, now the question is what one would work, btw the camera is a DVX100.

I have the Cable is just the standard RG6/U. Not the best but not the worst.

will something like Kramer Electronics USA PT-102VN 1:2 Composite Video Distribution Amplifier

or

VetcoElectronics.com

work, or do i need to ask to borrow one from my dad.

(side note: my dad run the one of the local news stations, KLAS channel 8, one of the first to go Full HD.)