wireless video transmission

Makes sense. The first one that came across my desk was 5.8 GHz. I am going to want to test this stuff but I don't want to buy seven different makes and models naturally. I want to narrow the field from listening to people's experience. Thanks for the input.

application

I didn't notice any toys at 5.8G. I was going to mention that 1.2 G, if that's legal in US, or the 800/900 MHz ISM band (free for all) is preferred as far as range is concerned. 5.8 G has much less wall penetration power compared to 1 G. But perhaps high frequency allows directional antenna. The chance that anyone not at the line of sight able to receive the security feed is low, and that it's hard to feed something else to your receiver not at line of sight. Just guessing.

2.4 G is certa> Makes sense. The first one that came across my desk was 5.8 GHz. I am going

Try these folks for low to medium-end applications:

This is the easiest stuff we've used.

I've also used SmartSight for a number of applications

It's more expensive and harder to learn.

Basically, there are two different types of wireless. The first type transmits the actual analog video signal at 900mhz, 2.4ghz, or 5.8ghz. The second type converts the video signal to IP and transmits IP data wirelessly including PTZ commands if needed. The 5.8 stuff should handle your distance with no problem. You can use repeaters as well to bounce the signals around obstacles if needed. Depending on the equipment, you can have multiple video streams transmitted and repeated by each transmitter.

A basic wireless primer can be found:

The Verint S1100 is what gets used typically in these applications. Takes about one week lead time to get one since they build them to order usually.

kind of gear isn't cheap. Full retail about $2800.00. If you're not a Verint dealer I know Anixter carries Verint but I never ordered one of these units thru Anixter always direct. Ordered a set last week. Still have not received it. You can use repeaters. There is point to point and point to multipoint.1/4 miles is not a problem, you can go almost 10 miles depending on the antenna you use and CIF/frame rate you XMIT. It is line of sight but has a tear drop sort of pattern. To figure actual range you have to use funny dB calcs through the circuit. If you're way off the FCC might spank you alittle. It is not a big deal, just funny adding dB here and taking away there, especially since you can get more out than you put in Problems are what looks like flat ground to the eye sometimes isn't and there is signal blockage. Trees at this time of year can be killers. No leaves = great signal. Springtime comes leaves= big problems. If you have never messed with wireless give yourself about a half a day to read instructions and get familiar with it. If you never messed with IP encoders give yourself about 2 full days to to read instructions and get familiar with understanding network topology.

"Bob Worthy" wrote in message news:Q_q4h.5475$ snipped-for-privacy@bignews4.bellsouth.net...

As some others have mentioned the Smartsight stuff is a good choice. It uses 802.11a secure IP transmission. I've used it for 3/4 of a mile on Pelco speed domes with Rs-485 for PTZ control. There was no converter to use Coaxitron protocol at the time I used it, but maybe there is now.

I recommend you setup the network before installing in the feild, just don't place the x-mitter and recivers too close together (< 50 feet) when testing or you'll nuke 'em.