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Old December 11th, 2006, 07:15 PM   #1
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Wireless Video

Hi I have been experimenting with wireless video for some time now but i stil get signal loss over a long distance say a football field, buying high end transmitters is out of the question because of the price, does anyone have any low cost solutions that are reliable
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Old December 11th, 2006, 07:36 PM   #2
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two tin cans and some fishing line??
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Old December 12th, 2006, 07:57 AM   #3
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very funny sean im serious i need help
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Old December 12th, 2006, 09:53 AM   #4
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What format video?

With a format such as DV or MPEG2-TS, you could set up a wireless computer network and stream the video via the network.

Standard definition DV requires about 25Mbps. Using a 54Mbps wireless network could probably just about cope.

You would have feed the DV source via Firewire to a computer. It would stream the DV via the wireless network to another computer which, in turn would send the DV back out to a suitable device via Firewire.
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Old December 12th, 2006, 02:53 PM   #5
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Probably not reliable enough

This reminds me of something I was doing several years ago.

I work at a college where we were experimenting with wireless networking. We set up a wireless transceiver on a tower close to our building and I took a wireless network card and antenna home and installed them in my computer and placed the antenna in a window facing the tower. The reception was marginal (a distance of maybe 1/4 mile). I got some heavy aluminum foil and made a reflector to place behind my antenna to focus the signal. I don't have any hard data but using the monitoring software I believe I got as much as 3db and sometimes more of a boost in the signal. Sometimes it made a difference between not being able to use the card and being able to get on the network.

The reflector was made by bending a doubled over sheet of heavy duty aluminum foil into the shape of 1/2 a cylinder. Imagine taking a cylinder and splitting it lengthwise into two halves.

This probably wouldn't be reliable enough for you to use, but it's an interesting idea. Most people couldn't believe that it actually made a difference, but it did. It would probably have worked even better if I had a reflector at both antennas.

Sorry I don't have any other (real) solutions, but this was my only involvement with digital broadcasting.

Tony
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Old December 12th, 2006, 07:02 PM   #6
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James: Is this just to monitor video or is it to feed an editing or broadcast system?
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Old December 12th, 2006, 07:21 PM   #7
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in a nut shell

I shoot sports on a regular basis we use five cameras connected to a broadcast bus via triax, im the fith camera that is roving free, how ever my movements in and around the field are limited by the cable, im looking to purchase a system that will enable me to send video back to the bus via a microwave link of some sort, I vave tried several wireless transmitters but i get a lot of signal loss when i go over 1000ft
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Old December 12th, 2006, 07:50 PM   #8
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Have you taken a look at these:

http://rf-links.com/24_transmitters.htm

Try inquiring at the website. Maybe they might have a solution available.
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Old December 13th, 2006, 06:58 AM   #9
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Premier Wireless Inc.

Here is a unit that will cover 1000feet range.

http://www.premierwirelessinc.com/PD...Mnl302_402.pdf

Microwave System
Frequency Of Operation . . . 5725 to 5875 MHz
Channels (User Selectable) . 10 (14.75 MHz channel bandwidth)
Channel Frequencies.
5733.75 MHz 5807.50 MHz
5748.50 MHz 5822.25 MHz
5763.25 MHz 5837.00 MHz
5778.00 MHz 5851.75 MHz
5792.75 MHz 5866.50 MHz
Modulation . FM
Range . 1,000 Ft. Clear Line of Sight (Using Patch Antennas)
(Consult factory for extended operating range)
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