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Posted by accidental plumber on November 8, 2006, 5:38 pm
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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 certainly a no-no as there are two many high power wi-fi
around, not to mention the microwave. But now the majority of cordless
phones are overly expensive at 5.8 GHz. That drove me to an internet
phone company, whatever they bundle would be wifi friendly.
Bob Worthy wrote:
> 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.
>
> > Toy battery operated cameras claim to have a range of 300 ft at 2.4 GHz
> > and 1000 ft at 1.2 GHz line of sight. But in reality much less even
> > line of sight, to have a professional looking video. But a 1 W
> > transmitter, a not so small box, will easily be capable of 1/4 miles
> > LOS. The next thing is to use a bigger and better antenna to boost the
> > signal. I doubt if you need a repeater regardless of budget. A
> > receiver turns RF into TV signal only.
> >
> > Bob Worthy wrote:
> > > I have never used wireless equipment for video. We have always been able
> to
> > > wire everything. I now have an application (RFP) that a portion of the
> > > system will need to be wireless. Any suggestions on equipment? It was
> not
> > > speced in the RFP. I am not afraid of cost for reliability. If cost
> becomes
> > > a concern, I walk away from the RFP. Any installation pitfalls to
> consider
> > > before I go through the proposal process? This is an exterior
> application
> > > and the furthest camera will be approx. 1/4 mile (actually a little
> less)
> > > away from the receiver. I will be able to accomplish a pretty good line
> of
> > > sight. Is a receiver capable of transfering signal to a second
> transmitter
> > > and retransmitting to a second receiver or is there a different piece of
> > > equipment (repeater?) for this if necessary?
> > >
> > > TIA
> > > Bob W.
> >
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